Abstract: A handrail system (10) is disclosed having an elongated handrail rod (11) coupled to handrail mounts (12) that are adapted to be mounted to a support surface. The handrail system also includes accessory devices (13) coupled to the elongated handrail. The elongated handrail rod includes a casing (16) and an internal frame (17) to form a channel (22). The accessory device includes a mounting flange (43) configured to mate with the handrail rod and an accessory holder (44). The mounting flange includes an elongated neck (45) extending to a curved top portion (46) configured to overlay the top of the handrail. The mounting flange also includes a locking member (47) configured to be received within the channel of the handrail rod.

Abstract: A light-emitting device lamp includes a light-emission unit including one or more light-emitting elements; a power circuit unit supplying a power to the light-emission unit; a heat radiation unit having the light-emission unit mounted therein and radiating heat that is generated by the light-emission unit; and a housing contacting and surrounding a portion of an outer circumference of the heat radiation unit and transmitting heat generated by the power circuit unit to the heat radiation unit.

Abstract: A light box defined with a peripheral portion and a display portion is provided. The peripheral portion has four margins, and the opposing margins being defined with equal widths. The display portion is surrounded by the peripheral portion and is rectangular. The light box comprises at least two sets of electrode pads and an outer frame. The at least two sets of the electrode pads are disposed on at least two of the margins, respectively, and each set of the electrode pads comprises a connector electrode pad, disposed at the corresponding margin. With the arrangement of the at least two sets of the electrode pads, the light box can be panelized with one or more lighting panels.

Abstract: The invention provides an illumination assembly and an illumination assembly based lamp. The illumination assembly includes a substrate that has a plurality of light emitting areas, such that each of the light emitting area includes a group of two or more semiconductor dies that are directly mounted on the substrate. Further, a light emitting area is separated by a first distance from another light emitting area and each semiconductor die in a light emitting area is separated by a second distance from another semiconductor die in the same light emitting area, such that the first distance is substantially greater than the second distance. Furthermore, the illumination assembly also includes a single piece optic element disposed over the plurality of light emitting areas, such that the single piece optic element is configured to direct light emitted from all the light emitting areas in a cone of light.

Abstract: An object of the present invention is to provide a lighting device in which a problem is hardly caused by a hole formed in a chassis of the lighting device. A backlight unit (a lighting device) 1 according to the present invention includes an LED (a light source) 17, a flat cable (a flat conductor) 22 connected to the LED 17, a chassis 14 including a hole 14e, a cable protector (a flat conductor protector) 23 including a protection portion 24 and an insertion hole 24a extending through the protection portion 24. The chassis 14 houses the LED 17. The flat cable 22 is inserted through the insertion hole 24a. The flat conductor protector 23 is arranged such that the protection portion 24 is positioned between an edge of the hole 14e of the chassis 14 and a portion of the flat cable 22 that is positioned in the insertion hole 24a.

Abstract: An apparatus creating a flickering flame effect. The apparatus includes a housing with an interior space with first and second stages. A drive mechanism generates a time varying electromagnetic field extending into the first stage. A first pendulum member is pivotally mounted in the interior space of the first stage and includes first and second magnets on first and second ends, with the first end proximate to the drive mechanism such that the first magnet interacts with the varying electromagnetic field to cause movement of the pendulum member. The apparatus includes a second pendulum member pivotally mounted in the second stage with a magnet on a first end proximate to the second end of the first pendulum member. A flame silhouette element extends from the second pendulum member, and a light source transmits light onto the flame silhouette, which is moving due to the magnetic coupling of the pendulum members.

Abstract: A backlight assembly includes a lamp unit, a covering member, a panel guiding member and a lamp supporting member. The lamp unit has a first electrode and a second electrode disposed at a first side of the lamp unit and a curved portion disposed at a second side of the lamp unit that is opposite to the first side. The covering member covers at least one of a first region corresponding to the first and second electrodes and a second region corresponding to the curved portion. The panel guiding member is configured to support a display panel that displays images using light generated by the lamp unit. The lamp supporting member is configured to retain the lamp unit. Therefore, a number of inverters may be reduced, thereby lowering cost and time of manufacturing the backlight assembly. Furthermore, reliability of the backlight assembly may be enhanced.

Abstract: An LED lamp has an arrangement of LEDs that results in light emitted in a substantially spherical light field. The LED lamp has a bulb-shaped body with at least one LED at the top and a number of LEDs positioned around the circumference of the body. The LEDs are arranged such that light is emitted forward from the lamp and also from the sides of the lamp. Accordingly, the LED lamp, for example, in operation provides illumination in direction and intensity very similar to an incandescent bulb.

Abstract: An illumination lamp in which a lamp fitting is attached to a support is installed outdoors. Light-emitting portions of the lamp fitting are easily attached, with a small number of components, to such a position as to illuminate a wide area. In order to prevent the attached components from being damaged, the lamp fitting (1) includes the light-emitting portions (2), a casing (10) to which the light-emitting portions are attached and a protective cover (3) which is arranged on the front side of the light-emitting portions and which protects the light-emitting portions. The casing (10) is shaped to have a plurality of attachment surfaces (11A) and (11B) to which the light-emitting portions can be attached to face in a plurality of predetermined directions. In the illumination lamp (ST), the light-emitting portions are easily attached to a predetermined position with a small number of components.

Abstract: A lighting device, a lighting panel and a circuit board thereof are provided. The circuit board comprises a substrate; a plurality of light sources disposed on the substrate and at least one circuit layer, being patterned onto the substrate to form a plurality of traces for electrically connecting the light sources. Therein, the circuit board is capable of being assembled with other circuit boards to construct the lighting panel. The lighting device is capable of having the lighting panel of a large size by assembling a plurality of the circuit boards and individually controlling each light source disposed on the lighting panel so as to provide the function of local dimming.

Abstract: A lighting bulb is provided. The lighting bulb has a housing, a lighting unit and an electrical connector. The housing is configured for accommodating a circuit board and a heat-dissipating sealant is filled in the housing. The lighting unit is coupled to the circuit board for emitting the light and the electrical connector is configured for providing power to the circuit board and the lighting unit. A protruding member disposed on the inner surface of the housing and the circuit board form a mechanical interference against the floating force of the heat-dissipating sealant to the circuit board.

Abstract: The present invention provides a modularized street lamp, which includes a lamp holder, a first light emission module, and a second light emission module. The first light emission module and the second light emission module are mounted to the lamp holder so that each of the light emission modules covers a respective area of illumination to achieve an effective distribution of areas of illumination. When one of the light emission modules gets broken, the remaining one of the light emission modules is still staying in operation to give off light to allow pedestrians to watch out any situation occurring in roads or streets. Further, the present invention can be manufactured in an easy way and includes no special configuration so that any manufacturer in the industry can easily manufacture the lamp to thereby ensure fairness of maintenance operations.

Abstract: According to one embodiment, a luminaire includes an envelope including a light transmission section, a rectangular substrate provided in the envelope, and a pair of supporting sections. On one surface of the substrate, plural light-emitting elements are mounted side by side on a line shifted to one side in the width direction of the substrate from a center line extending along the longitudinal direction of the substrate. Electronic components are mounted in positions deviating to the other side in the width direction of the substrate from the line. The pair of supporting sections are provided on the inner surface of the envelope and support both the end sides of the substrate, which are along the longitudinal direction of the substrate.

Abstract: A mount member (5) has a contact surface (27a) touching the bottom surface of an LED module (3) and protrusions (5a) protruding from the periphery of the contact surface (27a) in the thickness direction of the LED module (3) and regulating sliding motions thereof. A fixing member (6) made of a resilient, plate-like member comprises an opposing pair of flat portions (43) near the contact surface (27a) of the mount member (5) and flat tabs (44) projecting from the flat portions (43) toward the contact surface (27a) touching the upper surface of a substrate (17). The flat portions (43) of the fixing member (6) are fastened to be lower than the top surface of the substrate (17) of the LED module (3). Thus, elastically deformed areas extending from the fastened parts of the flat portions (43) through the flat tabs (44) press the substrate (17) into the mount member (5).

Abstract: An LED replacement light bulb for use in a standard AC light bulb socket is provided. The light bulb includes a body, a heat sink portion and an end cap arranged to receive DC electrical current from the AC light bulb socket where the AC electrical system has been converted to a DC electrical system. The LED replacement bulb includes a base and wires connecting the base to a plurality of LEDs or to an LED board. A quick disconnect is disposed between the base and the plurality of LEDS or the LED board to allow for easy removal and replacement of the LEDs or of the LED board. In one preferred embodiment, a lens cover is provided with stand-off legs to avoid metal to metal contact between the bulb and its surrounding lighting fixture.

Abstract: A lighted sign or lighting fixture includes a housing that contains a series of LEDs. The housing has a pair of side walls and a series of spaced apart reinforcing members that extend between and interconnect the side walls. The reinforcing members may be formed integrally with the side walls, or may be in the form of separate members that are securely attached to the side walls. An LED mounting structure, such as a PCB, may be attached to the reinforcing members, or alternatively a separate bottom wall may be secured to the reinforcing members.

Abstract: A multidirectional lighting fixture system, comprising: a body having a vertical axis; a first illuminant affixed to the body to project a first flux, the first illuminant positioned on the body to project the first flux within a first area, wherein the first area extends from the first illuminant along the vertical axis and radially about the vertical axis to about 70 degrees; at least one secondary illuminant affixed to the body to project a second flux, the secondary illuminant positioned on the body to project the second flux within a second area, wherein the second area extends from about 60 degrees from the vertical axis to less than 90 degrees elevation from the vertical axis in a radial direction,

Abstract: A backlight module and a light source module thereof are disclosed. The light source module includes a substrate, at least one first light source, and at least one second light source. The substrate includes a first substrate portion and a second substrate portion. The first substrate portion extends along a length direction, and the second substrate portion bends an acute angle corresponding to an extending surface of the first substrate portion. The at least one first light source and the at least one second light source are disposed on the first substrate portion and the second substrate portion respectively. The acute angle is existed between the light-emitting directions of the first light source and the second light source, and the light-emitting directions are parallel to the first substrate portion.

Abstract: An illuminating device comprises a heat dissipating module, a light emitting module arranged on the heat dissipating module, and a holder connected to the heat dissipating module. The heat dissipating module comprises a heat conductive plate and a plurality of fins; the heat conductive plate has a first surface and a second surface opposite to the first surface; the plurality of fins are configured on the first surface and extends along a direction away from the second surface. The light emitting module comprises a base attached to the second surface of the heat dissipating module and a light source; the base has a supporting surface and the light source is arranged on the supporting surface. A distance between the supporting surface and the second surface gradually increases along a direction from one side of the heat conductive plate to the other.

Abstract: A lighting module (1) having a connection end (2) for connection to a lamp holder (3), and a light output end (4) for outputting light, wherein the lighting module (1), at the light output end (4), is provided with a mechanical interface comprising first (6) and second (7) protrusions extending in a direction parallel with a longitudinal axis (13) of the lighting module and being configured to interact with corresponding protrusions (6?,7?) on an identical mechanical interface to transfer at least one of a rotational force and a pulling force to the lighting module (1), so that a device (1?) provided with such an identical mechanical interface can be used as a tool for connecting/disconnecting the lighting module (1). An advantage is that it is possible to utilize one lighting module as a tool to connect/disconnect another lighting module from a lamp holder.

Abstract: A lighting device for streets, having a housing for receiving at least one lighting module can be mounted easily if it comprises a plurality of lighting units having a light element and an optical element associated with the same and being fastened on a carrier. The module housing is covered by a sealing pane facing the lighting units and comprises fastening means for removably fastening same on the housing. Electrical contact means are provided on the module housing for electrically connecting the lighting units to an external voltage source, wherein the fastening and contact means are designed such that the lighting module can be brought from an assembled position, in which the lighting module is mechanically and electrically connected to the housing, to a disassembled position in which the lighting module is not mechanically or electrically connected to the housing, and vice versa, exclusively by means of a linear displacement.

Abstract: A portable device for hands free illumination includes a battery pack and a lamp assembly coupled to the battery pack to receive power. The lamp assembly includes a housing defining an opening extending along at least a portion of two sides and defining an enclosure, a light source within the enclosure and coupled to the battery pack to receive power, and a transparent cover sized to fit over the opening to seal the enclosure and to permit light to pass through in at least two directions.

Abstract: An illuminant device includes at least an illuminant element and a lamp holder including a housing, a metal core printed circuit board (MCPCB) and a power-driving unit. The housing includes a first side and a second side opposite to the first side. The MCPCB is disposed on the first side of the housing and includes a base and a plurality of extending parts extended from the circumference of base in a bending forming manner and spaced from each other. The base has a plurality of holes, the extending parts are embedded within the housing, and the illuminant element is mounted on the base. The power-driving unit includes a circuit board, and a first end of the circuit board has a plurality of posts. The posts are respectively penetrated the holes and electrically connected to the MCPCB. In addition, a manufacturing method of the lamp holder is disclosed.

Abstract: A lighting apparatus includes a body portion, a conduit coupled to the body portion, and one or more illumination components coupled to the body portion, where the one or more illumination components are in electrical communication with the conduit. A lighting apparatus kit is also disclosed. A daisy-chained lighting apparatus assembly is also disclosed.

Abstract: A semiconductor light emitting apparatus includes an elongated hollow wavelength conversion tube that includes an elongated wavelength conversion tube wall having wavelength conversion material, such as phosphor, dispersed therein. A semiconductor light emitting device is oriented to emit light inside the elongated hollow wavelength conversion tube to impinge upon the elongated wavelength conversion tube wall and the wavelength conversion material dispersed therein. The elongated hollow wavelength conversion tube may have an open end, a crimped end, a reflective end, and/or other configurations. Multiples tubes and/or multiple semiconductor light emitting devices may also be used in various configurations. Related assembling methods are also described.

Abstract: An assembly for accessing a body cavity having an illuminated proximal end. The assembly includes a housing defining a longitudinal axis and having a longitudinal opening therethrough for receiving a surgical object, an illumination source disposed adjacent a proximal end of the housing and a sensor mechanism disposed along the longitudinal opening and operably connected to the illumination source. The sensor mechanism is configured to detect the presence of a surgical object within the longitudinal opening and deactivate the illumination source when a surgical object is present in the longitudinal opening.

Abstract: The instant disclosure provides a lighting device, which includes a fixture body having a first receiving space formed therein; at least one light-emitting unit disposed on the fixture body and accommodated in the first receiving space; at least one optical unit disposed on the fixture body in the first receiving space configured to receive light emitted by the light-emitting unit; and at least one elastic module arranged between the optical unit and the fixture body, where the elastic module provides the buffering and anti-shock effect.

Abstract: A light bar structure including a base, a flexible circuit board (FCB), a first circuit, a second circuit, and a first connector is provided. The base has first and second surfaces. The FCB is on the first surface. The first circuit on the FCB includes N+1 serial first conductive contact pads, N light-emitting elements, and a first conductive wire. N and N is a positive integer. The second circuit on the FCB includes N+1 serial second conductive contact pads, and a second conductive wire. To form a closed loop, the first connector connects a first one of the first conductive contact pads and a first one of the second conductive contact pads and the second connector connects a (i+1)-th one of the first conductive contact pads and a (i+1)-th one of the second conductive contact pads. 1?i?N and i is a positive integer.

Abstract: A lighting device is disclosed comprising a plurality of light emitters and a heat spreader plate thermally coupled to the plurality of light emitters, wherein the plurality of solid state emitters provides a thermal load upon application of an operating current and voltage, the heat spreader plate dissipating substantially all of the thermal load to an ambient air environment.

Abstract: A lighting system may include a housing for a lighting module and at least one profiled element which can be coupled to the housing and protrudes from the housing when coupled to the housing. The housing has an external surface with a plurality of channels and comprises a plurality of seats. The profiled element may have a first engagement formation insertable into one of the channels of the housing and a second engagement formation insertable into one of the seats of the housing when the first engagement formation is inserted in the channel. Blocking means movable into a first and into a second operative position, may be.

Abstract: A planar illuminating device includes a number of light sources and an optical sheet positioned at a side of the light sources. The optical sheet includes an incident surface facing the light sources and an emergent surface opposite to the incident surface. The incident surface includes a number of protruding prism structures. The emergent surface includes a number of concave diffusing micro-structures.

Abstract: A lighting system includes a heat sink having an upper and a lower face, and a plurality of light engines. The heat sink includes a plurality of individual, enclosed heat conduits extending generally parallel to a longitudinal axis of the heat sink between the upper and the lower faces. Each heat conduit has an entrance proximate to the lower face and an exit proximate to the upper face. The light engines are each coupled to at least one heat conduit such that thermal energy generated by the light engines is transferred to the heat conduits to cause air to flow through each of the heat conduits due to convection.

Abstract: An ornamental fixture having a support structure and a plurality of ornaments mounted to the support structure in a substantially completely spherical arrangement of ornaments. The ornaments may be glass crystal ornaments, for example, octagonal glass crystals, and a light may be mounted within the fixture. The support structure may include an upper support ring and at least one lower support ring vertically spaced from the upper support ring and a plurality of arcuate sector assemblies removably mounted to the upper support ring and the at least one lower support ring. The sector assemblies retain the ornaments to provide a substantially continuous 360-degree array of ornaments. The sector assemblies can also be disassembled from the support structure for maintenance, servicing, relamping, and cleaning of the fixture. For example, the disassembled components of the fixture may be washed in a dishwasher without damaging the ornaments or the support structure.

Abstract: A lighting mounting device that is fabricated from a number of hollow, flexible tubes, which can be interconnected by a series of elbows. Each of the tubes also has a slit, which allows a continuous string of lights to be mounted directly adjacent to the tubes. The string of lights can be connected via a plug to an electrical outlet that provides standard household electricity, with the tubes being positioned in a square or square-like configuration to allow the tubes to be mounted adjacent to a door frame or window frame for easy display.

Abstract: A lighting apparatus includes a housing, a light emitter located in an interior region of the housing, a driver for the emitter, and a heat sink coupled to the driver. The heat sink includes a plurality of fins for cooling the driver. The apparatus further includes a driver mounting portion having a mounting surface and a side wall. The side wall is coupled to one of the heat sink and the driver so that the plurality of fins of the heat sink are exposed. The mounting surface of the driver mounting portion is coupled to the housing.

Abstract: A lighting system including a powering rod and a first lighting unit is provided. The powering rod is used for providing power. The first lighting unit includes a housing, a light source, an inner ring body and an outer ring body. The light source is disposed inside the housing. The inner ring body, disposed in the housing, has a hollowed portion for receiving the powering rod and is electrically connected to the powering rod. The outer ring body, disposed on the inner ring body fixed to the housing. The outer ring body is capable of rotating with respect to the inner ring body for rotating the housing. When the outer ring body is rotated to a first position, the first lighting unit is in a first lighting state. When the outer ring body is rotated to a second position, the first lighting unit is in a second lighting state.

Abstract: A laser system includes a housing and a laser. The laser can be positioned in the housing such that its laser beam is transmitted at an angle and its path forms a cone as the housing rotates. The laser device may also contain two or more lasers, the angle of each laser may be the same or different, and the angular position of each laser may be fixed or variable. The laser system may be stationary or mobile and used in a variety of methods to detect an object or topography and produce a three dimensional image. That information can be further used to provide maps, terrain data, volumetric measurements, landing guidance, obstacle avoidance warnings, mining profiles and other useful material.

Abstract: Disclosed herein is an optical semiconductor based illuminating apparatus including light emitting modules including at least one semiconductor optical device; and a housing enclosing one side surface of at least one of the light emitting modules. This optical semiconductor based illuminating apparatus may promote convenience for checking and repairing, simply perform separation and fastening, have excellent waterproofing characteristics and durability, prevent accidents such as short circuit and electric shock improve heat radiation performance, prevent introduction of foreign materials, be easily cleaned and maintained, reliably provide power of a main power line to a plurality of light emitting modules, and utilize a space and secure reliability of a product regardless of a size and a shape of a power supply embedded therein.

Abstract: A solid-state lamp comprises: one or more solid-state light emitting devices (typically LEDs); a thermally conductive body; at least one duct; and a photoluminescence wavelength conversion component remote to the one or more LEDs. The lamp is configured such that the duct extends through the photoluminescence wavelength conversion component and defines a pathway for thermal airflow through the thermally conductive body to thereby provide cooling of the body and the one or more LEDs.

Abstract: A light-emitting device includes a light-emitting element and a heat-conducting and electrically-insulating element. The light-emitting element includes at least one first conductive frame having at least one first electrically-conducting portion and at least one heat-dissipating portion, at least one second conductive frame adjacent to the first conductive frame and having at least one second electrically-conducting portion, a casing enclosing the first conductive frame and the second conductive frame, and at least one light-emitting chip disposed on the first conductive frame. The heat-conducting and electrically-insulating element includes a heat-conducting and electrically-insulating layer disposed on the heat-dissipating portion for insulating an electrical current from the heat-dissipating portion.

Abstract: An optical semiconductor lighting apparatus includes a heat sink including a heat dissipation base and a plurality of heat dissipation fins formed on a lower surface of the heat dissipation base; an optical semiconductor device placed on the heat dissipation base; and an optical cover coupled to an upper side of the heat sink to cover the optical semiconductor device. The heat dissipation base is formed with an air flow hole through which upper ends of the heat dissipation fins are exposed.

Abstract: A water-proof and dust-proof membrane assembly which has a satisfactory water-proof property, dust-proof property, sound transmission capability and air permeability, as well as excellent supporting intensity and pressure resistance is provided. A water-proof and dust-proof membrane assembly having a body and a supporting member, in which the body is an asymmetric porous structure in the form of membrane having a first surface and a second surface, the supporting member is composed of a polymeric material, includes a first contact surface and a second contact surface and the porosity (second porosity) of the supporting member is larger than the first porosity, i.e. 10% to 99.9%, and the first surface of the body and the first contact surface of the supporting body are bonded is provided.

Abstract: A lamp includes a lamp holder, a supporting board and a plurality of light sources. The lamp holder has a holding surface for holding the supporting board. The supporting board has a fixing portion, a first supporting portion and a second supporting portion. The fixing portion is fixed on the holding surface. The first and second supporting portions are adjacent to each other. The first supporting portion has a first supporting surface. The second supporting portion has a second supporting surface oblique to the first supporting surface. The plurality of light sources is arranged respectively on the first and second supporting surfaces.

Abstract: An illumination device includes a housing defining a hole therethrogh; a plurality of light sources each is a light emitting diode is disposed in the housing; a lamp seat is securely positioned at one side of the housing. The lamp seat comprises a protrusion configured to receive electronic elements therein. The protrusion of the lamp seat is inserted into the hole of the housing.

Abstract: The present invention relates to an area light source module with multipoint chip-on-board. With separatively-disposed multipoint chip conductive layer portions and conductive wiring layer portions disposed between multipoint chip conductive layer portions of a substrate body, it can be more flexible for the wire-bonding and conductive connection and the circuit design of conductive metal wire bodies to be formed in serial and parallel connections, and also the whole assembly structure and the manufacturing process can be simplified, thereby facilitating the heat dissipation efficiency of light source chip bodies to increase the illumination efficiency and providing stable structural configuration and illumination.

Abstract: The present invention provides an optical semiconductor-based lighting apparatus. The lighting apparatus includes a housing, a light emitting module disposed on an open region at one side of the housing, and a heat sink unit placed within the housing to absorb and discharge heat from the light emitting module. The light emitting module includes a heat sink base on which a semiconductor optical device is mounted. The heat sink unit includes at least one main heat pipe having one side adjoining the heat sink base and a heat sink block adjoining the other side of the main heat pipe to cooperate with the main heat pipe.

Abstract: A light module for a backlight assembly that prevents metal wiring from being damaged at a bent portion and a backlight assembly including the same are presented. The light module for the backlight assembly includes: a printed circuit board (PCB) including a first portion and a second portion connected by a connection having a bend; a first light source formed on the first portion of the printed circuit board (PCB); a second light source formed on the second portion of the printed circuit board (PCB); a first wiring connecting member connected to the first light source and formed on the first portion; and a second wiring connecting member connected to the second light source and formed on the second portion, wherein the first wiring connecting member and the second wiring connecting member are connected to each other.

Abstract: A light source for a photo-reactive curing apparatus is provided, which includes a plurality of light source elements or modules, such as, UV or visible LEDs or LED arrays, arranged to provide a beam profile comprising irradiation zones separated by a dark zone. Photo-polymerization occurs during periods of irradiation and dark polymerization occurs during dark intervals between irradiation. The relative positioning or spacing of light source elements or modules is set to provide an exposure profile with a dark interval which matches the required dark reaction interval for optimal curing efficiency. In modular or adjustable light sources, the spacing is adjustable dependent on process parameters. For processes such as inkjet printing, the beam profile may be better matched to the ink chemistry, so as to control the polymerization reaction to meet a required process speed for single pass or multiple pass applications.

Abstract: A lighting device may be provided that includes: a heat sink which includes a top surface and a member which has a side and is disposed on the top surface; a light source which includes a substrate disposed on the side of the member and light emitting devices disposed on the substrate, and has a reference point; and a cover which is coupled to the heat sink and includes an upper portion and a lower portion, which are divided by an imaginary plane passing through the reference point and being parallel with the top surface of the heat sink, wherein a distance from the reference point of the light source to the upper portion of the cover is larger than a distance from the reference point of the light source to the lower portion of the cover.

Abstract: A display device is provided with a plurality of solid-state light sources (101-103) and a coolant-circulating means (100) that is equipped with a flow path (100a) formed to pass through each of the solid-state light sources (101-103) and that circulates a coolant via the flow path (100a). Each of the solid-state light sources (101-103) has the property that the luminance thereof changes in response to a temperature change. The flow path (100a) is formed such that the coolant first passes through solid-state light sources having a greater degree of luminance change according to the above-described property of the solid-state light sources (101-103).