Abstract: The present disclosure provides a PCB fixing structure. The PCB fixing structure includes a housing, a PCB accommodated in the housing, and a top cap covering the housing. The housing has a side wall provided with at least two protrusion portions. The protrusion portion defines a connecting hole. The PCB defines at least two first through holes. The top cap defines at least two second through holes. The PCB fixing structure further includes at least two connecting pieces. Each of the connecting pieces is configured to pass through one of the second through holes, one of the first through holes and one of the connecting holes in sequence so as to fix the top cap and the PCB to the housing. The present disclosure further provides an electronic cigarette including the PCB fixing structure and a fixing structure for a PCBA control board of an electronic cigarette.

Abstract: A LED lamp comprises a base, an envelope, a printed circuit board for mounting a plurality of LED chips and a supporting member for supporting the printed circuit board. The envelope has a bottom end coupled with the base. The envelope defines an interior between the base and the envelope, and the printed circuit board is disposed in the interior. The printed circuit board comprises a hollow structure. One end of the supporting member is assembled in the base, the other end of the supporting member is coupled with the printed circuit board. One end of the printed circuit board extends into the base.

Abstract: A video wall module includes a plurality of light emitting diode chips, each including first contact electrodes and second contact electrodes arranged at a contact side, wherein the light emitting diode chips are arranged at a top side of a multilayer circuit board, and the contact electrodes electrically conductively connect to a first metallization layer arranged at the top side of the circuit board.

Abstract: A lighting arrangement with an exchangeable lighting cap, includes a holder for the lighting cap and a lock lever to lock the lighting cap in position on the holder. The front face of the lighting caps has at least one light emitting element, for emitting light in a direction perpendicular to the front face. The edge of the front face has two positioning slots that are perpendicular to the direction of illumination. The holder comprises an opening for receiving the front face and has two positioning elements arranged at a rim of the opening, wherein the positioning elements can be inserted into the positioning slots of the lighting cap by elastic deformation to fix the position of the lighting cap on the holder. The lock lever has an open position for inserting the lighting cap into the holder and a locked position for locking the lighting cap in position.

Abstract: Disclosed is an ROV propeller tailhood comprising a body a control circuit board, a heat block, a thermal silica gel and long rod screws. The heat sink is fixed to the bottom of the control circuit board and disposed between the control circuit board and the body. The heat sink and the body are provided respectively with apertures that are matching with the long rod screws for fixing the heat sink to the body. The cooling silica gel is provided between the control circuit board and the heat sink.

Abstract: A light-emitting audio device, an audio output device, and a display device. The light-emitting audio device includes a micro device integrated with a micro LED device and piezoelectric device. Both image display and audio output can be enabled using a single device. Audio is output using a plurality of light-emitting audio devices disposed in a plurality of subpixels, respectively. An increase in the thickness of the display device due to integrate with a audio function can be minimized. A variety of audio output functions are provided by driving the light-emitting audio devices according to areas.

Abstract: A light-emitting diode (LED) luminaire having corrosion resistant and vapor tight properties. The LED luminaire is suitable for use in hazardous locations or areas. The luminaire comprises a housing having external heat sink fins located thereon, a driver box mounted on top of the housing, and at least one light-emitting diode printed circuit board having a light-emitting diode within the housing.

Abstract: An assembly for an electronic display is disclosed. An optical sheet is located behind the electronic display and adjacent to a backlight. A housing for said backlight, said optical sheet, and said electronic display is provided. An aperture is positioned along the perimeter of said optical sheet. A spring assembly is connected to said aperture and is configured to exert tensioning forces on said optical sheet.

Abstract: A foil structure with generation of visible light using LED technology includes a carrier foil and an LED chip for generation of UV light. The LED chip is disposed on the carrier foil and is provided with a light output face for emission of the UV light. Furthermore, the foil structure includes a color reaction layer for conversion of the UV light into the visible light. The color reaction layer is disposed above the LED chip or in a manner laterally offset relative to the LED chip. The color reaction layer is provided with a structuring, so that the UV light emitted from the light output face of the LED chip is not emitted into the surroundings of the foil structure.

Abstract: An optical projector module proofed against distortion caused by heat building up in and around the light-emitting element includes a printed circuit board (PCB), a light emitting element, and an optical structure. The optical structure on the PCB includes a supporting member almost completely enclosing the light emitting element. The supporting member includes an embedded metal heat dissipating layer extending to cover outside surfaces of the supporting member. The metal heat dissipating layer occupies more than 70% of the outside surfaces of the supporting member, and being metallic the dissipating layer is able to conduct electricity.

Abstract: In one example, an apparatus comprises a compact recessed lighting module, the compact recessed lighting module configured to be housed in and attachable to a junction box, the compact recessed lighting module including a monolithically formed unified casting, the unified casting having a cavity defined therein, a light source module disposed within the cavity, the light source module configured to emit light, and a driver configured to power the light source module. The monolithically formed unified casting has a plurality of fins defined in the outer surface thereof and a plurality of twist and lock tabs defined therein.

Abstract: In various embodiments, a light emitting diode (LED) tube lamp is provided along with a method of installing the LED tube lamp into a lighting fixture. In various embodiments, the LED tube lamp comprises: a tube; at least one LED positioned within the tube; and a passage formed through at least a portion of the tube, the passage configured to receive there-through a set of electrical connecting wires, wherein a first end of the electrical connecting wires comprises at least one of a two- or three-prong polarized plug. Various embodiments may further comprise a driver circuit positioned within the tube, the driver circuit comprising a second end of the electrical connecting wires. In various embodiments, the LED lamp tube may further comprise at least one end cap disposed on an end of the tube and at least one pin secured thereon wherein the pin is electrically isolated from the LED.

Abstract: In described examples, an image-generating panel is arranged for modulating a projection beam to include a modulated optical image. A cooling device is arranged to transfer heat received from the image-generating panel to a heat sink. The cooling device is arranged to receive the projection beam on a first side and to transmit the projection beam from a second side. The heat received from the image-generating panel can include heat generated by the image-generating panel in response to incidental sunlight.

Abstract: The disclosure concerns a housing for a light source mounted on a substrate, the housing comprising: a molded body having an opening permitting the passage of a light beam generated by the light source; one or more surfaces for receiving a diffuser; and first and second conducting pins traversing the molded body.

Abstract: This device includes an electronic board including a front surface; at least one light emitter assembled on the front surface; a protective cover configured to protect the electronic board and the at least one light emitter; a thermally-conductive resin layer having a heat exchange surface meant to be in direct contact with the aquatic environment, the thermally-conductive resin layer being configured to transfer the heat generated by the at least one light emitter to the heat exchange surface, and configured to ensure the sealing of the protective cover with the heat exchange surface.

Abstract: A luminaire includes a finishing section. The finishing section has a finishing cone that defines an internal cavity. The finishing section further includes a light source that is disposed within the internal cavity of the finishing cone. Additionally, the luminaire includes one or more retention devices that are coupled to the finishing cone. The one or more retention devices are configured to mount the finishing cone within a recessed can having one or more retention device receivers. The one or more retention devices include wire forms such as, but not limited to, spring wire forms and coiled wire forms. Alternatively, the one or more retention devices include a friction retention device.

Abstract: A high bay luminaire includes a heat sink having a substantially disc-shaped configuration. A light emitter is connected to the heat sink. A reflector is connected to the heat sink. A yoke is connected to the heat sink. The yoke has a first arm, a second arm, and a top bar. A driver is connected to the yoke so that the driver extends between the first arm and the second arm.

Abstract: A retention assembly includes a body that is configured to couple with the light fixture housing through a hinge. The body forms an internal axle. The retention assembly also includes a spring. A proximal end of the spring coils about the internal axle. A distal end of the spring extends from the body, and is configured to couple with a coupling feature of the light fixture housing. When the body couples with the hinge and the distal end of the spring couples with the coupling feature of the light fixture housing, a tension within the spring exerts a torque on the body, so as to urge the body to rotate about the hinge, toward the coupling feature.

Abstract: An edge-lit downlight apparatus includes a surface housing having a base and a side wall, a laminate, and a light guide module. The downlight apparatus includes a circuit board having an inner and an outer surface wall. The downlight apparatus includes first brackets, and each includes a body and a contacting part. The body of the first bracket abuts against the side wall of the surface housing, and the contacting part of the first bracket extends outward from the body and abuts against the laminate. The downlight apparatus includes fasteners passing through the contacting parts of the first brackets, the laminate, and being removably connected to the surface housing. LED chips are located on the inner surface wall of the circuit board.

Abstract: A LED heat-dissipating downlight includes an enclosure body, a light source board, and a driving board. The enclosure body has a side opening. The accommodating chamber is substantially made of a heat dissipation material. The light source board and the driving board are disposed in the accommodating chamber. The light source board is disposed on a bottom of the accommodating chamber, and thermally contacted to the accommodating chamber. The driving board is disposed on the light source board. The driving board has a spacing hole, and the light generated by the light source board passes through the spacing hole to the side opening of the accommodating chamber.

Abstract: A LED module for use in a LED light, preferably a LED retrofit lamp, has a leadframe and one or more LEDs which are electrically and mechanically connected to the leadframe. The LED module has one or more stabilizing sections made from an insulating material which are introduced locally, preferably in a punctiform and/or linear manner, into intermediate spaces of the leadframe in order to fasten sections of the leadframe to one another and, preferably, to space them apart from one another.

Abstract: An adjustable light fixture can include a housing comprising at least one wall that forms a first cavity. The adjustable light fixture can also include a first sealing member coupled to the at least one wall and at least partially disposed within the first cavity. The adjustable light fixture can further include a body movably coupled to the housing and at least partially disposed within the first cavity, where the body is configured to have multiple positions relative to the housing, where the first sealing member abuts against an outer surface of the body when the body is in each of the positions, where the first sealing member prevents fluids in an ambient environment from traversing therethrough when the body is in each of the positions, where the positions includes the body having a tilt angle relative to the housing of greater than 20°.

Abstract: An apparatus includes a light emitting diode (LED) chip; a laser light source; a front heat sink including first and second holes; a lens arranged to extend over the first hole; a back heat sink; and an insulating circuit board including a third hole, the circuit board sandwiched between the heat sinks such that the second hole and the third holes are aligned. The LED chip is mounted in a surface of the circuit board facing the front heat sink, and arranged such that it aligns with the first hole and the lens. The laser light source is provided in the back heat sink and arranged such that it extends at least partially through the second and third holes.

Abstract: A tablet cooling device includes a copper plate, having fans mounted on the copper plate to direct airflow; heat sinks secured directly under the fans; a thermal control board to control and regulate the fans and heat sinks; and peltier coolers secured underneath the heat sinks; a sub cooling plate, having a circulation channel embedded in the sub cooling plate; a liquid mixture is circulated through the circulation channel; a power source; the thermal control board detects temperature to maintain a predetermined temperature range via active and passive cooling.

Abstract: A highly reliable light emitting apparatus which emits light with high efficiency is obtained. The light emitting apparatus includes a light emitting member, a refrigerant, and a housing. The light emitting member includes a first surface including a phosphor irradiated with light to emit light, and a second surface different from the first surface. The refrigerant cools the light emitting member. The housing includes a holding portion for holding the refrigerant. A surface of the housing is provided with an opening communicating with the holding portion. The light emitting member is connected to the housing such that the second surface closes the opening.

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein the sleeve has a first positioning unit, the lamp neck has a second positioning unit, the sleeve can be connected with the lamp neck by engaging the first position

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein the light emitting surface includes a first region, a second region located inside the first region in a radial direction of the LED lamp and a third region locate

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell, wherein the heat sink comprises fins and a base; a power source; a light emitting surface comprising LED chips; a first heat dissipating channel; a second heat dissipating channel; and a lamp cover; wherein the second end on the upper portion of the lamp neck of the lamp shell is formed with a venting hole, the lamp shell has an airflow limiting surface which extends radially outwardly and is located away from the venting hole, the airflow limiting surface cloaks at least part of the fins.

Abstract: A vehicle lamp device includes a housing with first and second seating portions in a first end portion thereof, the second seating portion including a surface at a higher plane than the first seating portion, a light source module substrate on the second seating portion with at least one light source, a driving module substrate on the first seating portion with at least one driving element, a bracket combined with the first end portion of the housing, the bracket covering the light source module substrate and the driving module substrate, and having an opening exposing the at least one light source, and at least one connection terminal extending from the first seating portion to the second seating portion along an inner surface of the bracket, the at least one connection terminal electrically connecting the light source module substrate and the driving module substrate.

Abstract: A heat sink includes an extruded component, a cast component, and an interface layer. The extruded component includes a first aluminum material and is configured to be coupled to a solid state light source. The cast component includes a second aluminum material overmolded onto a portion of the extruded component to form the interface layer. The interface layer is formed of at least one of the first and the second aluminum materials and abuts against and couples the extruded component to the cast component.

Abstract: A lighting device includes LEDs, a light guide plate, and a frame. The light guide plate includes a light guide plate hole portion passing through in a thickness direction, a light entering surface, and a light exiting surface. The frame surrounds the light guide plate. The frame includes an outer peripheral wall portion and an inner peripheral wall portion. The outer peripheral wall portion opposes an outer peripheral end face of the light guide plate. The inner peripheral wall portion inserted to the light guide plate hole portion opposes an inner peripheral end face of the light guide plate on an inner side of the light guide plate hole portion. The inner peripheral wall portion has a configuration in which the opposing surface has a lower light reflectivity than that of an opposing surface of the outer peripheral wall portion.

Abstract: The present disclosure discloses an illumination device, including: a first lamp body; a driving power supply component received in the first lamp body; a second lamp body connected with the first lamp body; and a light source component received in the second lamp body; the light source component includes a light source substrate, a plurality of first light-emitting units and a plurality of second light-emitting units disposed on two surfaces of the light source substrate respectively; an interior of the first lamp body is provided with a reflector configured to reflect light emitted from the plurality of first light-emitting units; an interior of the second lamp body is provided with a lens pressing against the light source component and configured to perform a light condensation and a light collimation to light emitted from the plurality of second light-emitting.

Abstract: An LED lamp includes: a lamp shell; a passive heat dissipating element having a heat sink, wherein the heat sink comprises fins and a base; a power source; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips; a first heat dissipating channel formed in a first chamber of the lamp shell; a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink; and a lamp cover connected with the heat sink and having a light output surface, an end surface, an inner reflecting surface disposed inside the light output surface of the lamp cover and an outer reflecting surface disposed in the outer circle of the array of the LED chips; wherein a relationship as follows is satisfied between the LED chips and the inner and outer reflecting surface: (A1/N1):(A2/N2)=0.

Abstract: An LED lamp includes: a lamp shell; a passive heat dissipating element having a heat sink, wherein the heat sink comprises fins and a base; a power source; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips; a first heat dissipating channel formed in a first chamber of the lamp shell; a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink; and a lamp cover connected with the heat sink and having a light output surface and an end surface; wherein the base of the heat sink has a projecting portion protrudes from the light emitting surface in an axial direction of the LED lamp, the projecting portion protrudes from the light emitting surface in the axial direction of the LED lamp, the projecting portion is configured to be annular and a concave structure is defined by both the projecting portion and the base for receiving and protecting both the light emitting surface and the light cover, the b

Abstract: An LED lamp includes: a lamp shell; a passive heat dissipating element having a heat sink, wherein the heat sink comprises fins and a base; a power source; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips; a first heat dissipating channel formed in a first chamber of the lamp shell; a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink; and a lamp cover connected with the heat sink and having a light output surface and an end surface; wherein the light emitting surface include at least two LED chip sets having the LED chips, an open region is formed between adjacent two LED chips of the same LED chip set on the light emitting surface, the open region between any two adjacent LED chips of one of the two adjacent chip sets on the light emitting surface interlaces to and communicates with the open region between any two adjacent LED chips of another one of the chip sets on the light emitting

Abstract: A lighting assembly includes a heat sink including a pad surface, and an LED mounted on the pad surface. An optical device is optically coupled to the LED, and a support structure is provided for connecting the optical device to the heat sink. The support structure includes fixation spacers to connect the supporting structure to the heat sink, and both the LED and the fixation spacers contact the pad surface on a common plane.

Abstract: A translucent body's first surface is coupled to a top surface of a light converter. The light converter's bottom surface is coupled to a reflective bottom layer. A light coupling structure includes a hole in the reflective bottom layer and at least a slot in the light converter for receiving a light guide, and a light coupling surface for receiving laser light with a laser peak emission wavelength via the light guide. The light coupling surface is arranged so at least 80% of the laser light passing the light coupling surface is received by the translucent body. The translucent body comprises a second surface which is opposite the first surface and is coupled to a reflective top layer for reflecting at least part of the laser light back to the light converter. A peak emission wavelength of the converted light has a longer wavelength than the laser peak emission wavelength.

Abstract: Provided is a stage lighting source system with a lamp protection function. The stage lighting source system comprises a lamp, a lamp protection device and a light filter. All are arranged along a light axis sequentially. The lamp protection device comprises a non-transparent structure and a mounting component for mounting non-transparent structure. Light axis passes through the non-transparent structure. Non-transparent structure size does not affect a lamp light emitting effect in the light axis direction. Non-transparent structure fully or partially absorbs and/or reflects light energy from the light filter. The structure is easy and convenient to use, intercepts light energy reflected from the light filter by using appropriate blocking object and structure, effectively controls lamp electrode temperature within an acceptable range, and ensures lamp service life so that a flat light filter without an included angle is applied, and an ideal optical effect is realized.

Abstract: A backlight module and a display device are provided. The backlight module includes a back plate, a light guide plate, a first optical film, an adhesive member, a second optical film and a light source. The light guide plate is disposed in the back plate. The first optical film is disposed above the light guide plate, in which the first optical film has an elongated slot. One portion of the adhesive member is disposed in the elongated slot. The second optical film is disposed above or under the first optical film, and a portion of the second optical film overlaps the elongated slot of the first optical film so as to be adhered on the portion of the adhesive member which is located in the elongated slot. The light source is disposed on the back plate adjacent to a light-incident surface of the light guide plate.

Abstract: An improved vehicle light apparatus including an auxiliary light having a housing defining a front opening extending in a horizontal direction and a vertical direction perpendicular to the horizontal direction. A light emitting device is mounted in the housing. A transparent cover is mounted over the front opening. A rib extends rearwardly from the housing opposite the front opening and a plurality of fins are mounted on the rib.

Abstract: The invention relates to a lighting unit (1) for a motor vehicle, which comprises a light module (2) and a mirror module (3), wherein the mirror module (3) is designed to reflect the light emission produced by the light module (3) in an emission direction of the lighting unit (1), characterized by: the light module (2), which comprises at least one light source (4) and a first heat sink (5), the mirror module (3), which comprises a mirror unit (6) and a second heat sink (7), a cooling system (8), which comprises at least one inlet (9), at least one outlet (10), at least one line (11), at least one flow unit (12), a cooling medium, a first cooling sink, and a second cooling sink, wherein the inlet (9) and the outlet (10) are connected by the line (11), and the flow unit (12) is inserted into the line (11) in order to produce a flow of the cooling medium in the line (11) and sucks in the cooling medium through the inlet (9) and discharges the cooling medium through the outlet (10), and the first cooling sink is

Abstract: A high-bay luminaire includes an upper housing having an outer wall with an interior surface defining an interior compartment, and outer wall with an angled portion extending at an oblique angle towards a center of the interior compartment; a plurality of first heat fins extending from the exterior surface of the outer wall; a base connected to the upper housing; a light emitter connected to the base; a lens connected to the base and positioned below the light emitter; and a driver connected to the angled portion and operatively connected to the light emitter.

Abstract: A backlight unit is disclosed. The backlight unit includes a light source module having a light source and a light source printed circuit board connected to the light source, a diffuser placed over the light source and a supporting member placed under the diffuser and keeping the light source and the diffuser separated by a preset distance. The supporting member includes a groove formed in the top surface facing the diffuser, with an adhesive layer disposed inside of the groove.

Abstract: An LED (light emitting diode) lamp comprising: a lamp shell; a passive heat dissipating element having a heat sink connected to the lamp shell, wherein the heat sink comprises fins and a base; a power source disposed in the lamp shell; a light emitting element connected to the base of the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first channel defined in a chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working; and a second channel defined in the heat sink and between the fins and the base for dissipating the heat of the heat sink, which is generated from the LED chips and transferred to the heat sink; wherein the first channel comprises a first end on the light emitting element to allow air flowing from outside of the LED lamp into the chamber, and a second end on the upper portion of the lamp shell to allow air flowing from inside of the chamber out to the LED lamp; wherein th

Abstract: An LED lamp includes: a lamp shell; a passive heat dissipating element having a heat sink, wherein the heat sink comprises fins and a base; a power source; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips; a first heat dissipating channel formed in a first chamber of the lamp shell; a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink; and a lamp cover connected with the heat sink and having a light output surface and an end surface; wherein a chamber is formed between the light cover and the light emitting surface, and the light emitting surface and the LED chips are located in the chamber, the chamber has first apertures and second apertures, the first apertures are configured to communicate with the outside, and the second apertures are configured to communicate simultaneously with both the first heat dissipating channel and the second heat dissipating channel.

Abstract: A power module comprises at least one power semiconductor device with an electrical top contact area on a top side; and a multi-layer circuit board with multiple electrically conducting layers which are separated by multiple electrically isolating layers, the electrically isolating layers being laminated together with the electrically conducting layers; wherein the multi-layer circuit board has at least one cavity, which is opened to a top side of the multi-layer circuit board, which cavity reaches through at least two electrically conducting layers; wherein the power semiconductor device is attached with a bottom side to a bottom of the cavity; and wherein the power semiconductor device is electrically connected to a top side of the multi-layer circuit board with a conducting member bonded to the top contact area and bonded to the top side of the multi-layer circuit board.

Abstract: A lighting fixture can include a housing and a plurality of modules positioned within the housing. The plurality of modules can be distributed along a front portion of the housing. Each module of the plurality of modules includes a plurality of light emitting diodes and is independently mountable in the housing such that a number of modules in the plurality of modules is selectable.

Abstract: A lighting device for a motor vehicle has a ventilating device for ventilating the interior of the lighting device. The ventilating device has at least one separate component which is connected to a lower housing wall of the lighting device in the region of a ventilation opening in the housing wall, and through which component external air can pass into the interior. The component is embodied as an air-guiding element by which a slip stream can be selectively deflected from the outside onto at least one specific partial region of a lens of the lighting device. The ventilation and therefore the demisting of the lighting device is significantly improved.

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink; a power source having a first portion and a second portion; and a light emitting surface comprising LED chips; wherein the sleeve of the lamp shell is made of a material having lower thermal conductivity than that of material of the heat sink; wherein the sleeve of the lamp shell is encircle covered by the heat sink, such that the second portion of the power source and the heat sink of the passive heat dissipating element are thermally insulated by the sleeve to prevent thermal effecting from the heat sink to the power source in the sleeve.

Abstract: An LED lamp includes: a lamp head; a passive heat dissipating element having a heat sink; a power source; a light emitting surface comprising LED chips electrically connected to the power source; a first heat dissipating channel; a second heat dissipating channel; and a lamp cover; wherein the first heat dissipating channel comprises a first end and a second end; wherein the second heat dissipating channel comprises a third end on the light emitting surface; wherein the power source includes a power board and a plurality of electronic components mounted thereon; wherein the first heat dissipating channel includes an inner channel and an outer channel, a transformer of the electronic components includes a core and coils, the core has a second chamber in which the coils are disposed, an opening is formed at a side of the second chamber in a radial direction to expose the coils, the opening corresponds to the inner channel or the outer channel.