Abstract: A shatter glass guard and venting effect design for a fixture of a luminaire adapted to provide adequate shatter guard protection for the purpose of preventing glass from a broken lamp from being released from the fixture. An annular ring of perforated material is attached to an open end of a reflector. A lens is attached to the outside surface of the annular ring and is dimensioned to expose a portion of the perforated material to allow for venting of heat from within the fixture. The lens and lamp can be installed or removed from the fixture after installation without access from the top of the light housing. The lens when mounted becomes integral with the reflector and moves with the reflector should the reflector need to be adjusted or tilted for aiming. The lens and annular ring combination provides adequate shatter guard protection and venting of the fixture.

Abstract: A reflection-type light emitting apparatus has an excellent heat radiation property and allows the use of a high-power light emitting element, the minimization of a reduction in radiation efficiency of reflected light, and the focused radiation of high-output light at high efficiency. The apparatus has: a case 10 of metallic material and with an excellent heat radiation property; a reflection mirror section 11 formed fitted to the lower portion of case 10; a transparent plate 12 to cover the upper surface of case 10; heat radiation plates 13, 14 of metallic material with excellent heat conductivity and inserted inside the case 10; an LED element 2 mounted on the heat radiation plate 13; lead sections 15A, 15B fixed through an insulating layer 15a to the heat radiation plate 13 to serve as a power supply member to supply power to the LED element 2; and a spacer 16 of an insulating material to insulate the lead sections 15A, 15B from the case 10.

Abstract: A heat-dissipating device includes a receptacle body having a lateral wall formed with an air vent; a lamp unit including a burner, a reflector covered the burner, a glass plate disposed in front of the reflector, the reflector cooperating with the glass plate to define an air inlet adjacent to the air vent and an air outlet spaced from the air vent; a fan unit mounted on the receptacle body for covering the air vent and for generating airflow to flow into the receptacle body; and a nozzle disposed within the receptacle body between the air vent and the lamp unit for guiding the airflow into the lamp unit.

Abstract: An illuminable sign (20) has a base (22); a trough (24) having a configuration C formed in the base (22); a light dispensing medium (26) having the configuration C fitted in the trough (24) and including a pair of light-entering ports (28, 30); a light generator (32) fixed in operative relation between the pair of light-entering ports (28, 30), the light generator (32) including at least one light source (34); and a cover (36) fitted to the base.

Abstract: A light source device (100) includes a discharge lamp (1), a reflection mirror (2), a transparent plate (3) and a case (7). The reflection mirror (2) has inlet openings (4a, 4b) and outlet openings (5a, 5b) formed in the vicinity of the front end of the reflection mirror (2). The case (7) has outlet openings (7a, 7b) disposed on the front side of the reflection mirror (2), and an inlet opening (7c) disposed on the rear side of the reflection mirror (2). The inlet opening (7c) of the case (7) allows an air to flow into the case (7) and to flow along a back surface (2b) of the reflection mirror (2). The inlet openings (4a, 4b) of the reflection mirror (2) allow the air to flow into the interior of the reflection mirror (2). The outlet openings (5a, 5b) of the reflection mirror (2) and the outlet openings (7a, 7b) of the case (7) allow the air to be exhausted out of the case (7).

Abstract: Embodiments of the invention relate generally to an ultraviolet (UV) cure chamber for curing a dielectric material disposed on a substrate and to methods of curing dielectric materials using UV radiation. A substrate processing tool according to one embodiment comprises a body defining a substrate processing region; a substrate support adapted to support a substrate within the substrate processing region; an ultraviolet radiation lamp spaced apart from the substrate support, the lamp configured to transmit ultraviolet radiation to a substrate positioned on the substrate support; and a motor operatively coupled to rotate at least one of the ultraviolet radiation lamp or substrate support at least 180 degrees relative to each other.

Abstract: An LED lamp includes a transparent bulb, an LED module comprising a plurality of LEDs received in an inner space of the bulb, and a heat dissipation apparatus supporting and cooling the LED module. The heat dissipation device includes a heat sink having a hollow base and a plurality of fins extending from the base, a first heat conductor vertically supported by the heat sink, a second heat conductor horizontally mounted on the first heat conductor, and a heat pipe thermally connecting the heat sink, the first heat conductor and the second heat conductor together. The LEDs are positioned on the first heat conductor and the second heat conductor, respectively.

Abstract: A metal base has a mounting hole made in the wall for housing a light unit, and a reflection surface opposite to the hole for reflecting the light from the light unit to form a reflection lamp with high heat dissipation ability.

Abstract: A backlight unit including a light guide plate, a linear light source disposed in the light incident side of the light guide plate, a reflective sheet disposed in the rear side of the light guide plate, and a heat spreader sheet disposed in the rear side of the reflective sheet. In this backlight unit, an edge of the heat spreader sheet is placed more inner than the light incident side surface of the light guide plate in the vicinity of an electrode portion of the linear light source. Furthermore another edge of the heat spreader sheet is substantially aligned with an corresponding side surface other than the incident side surface of the light guide plate.

Abstract: The present invention relates to a light source module comprising a light source, which light source module comprises cooling means for cooling the light source base, which light source module further comprises a dechroic reflector, where at least one heat sink surrounds the dechroic reflector. The object of the present invention is to reduce the temperature at the lamp base to increase the lifetime of a lamp. This can be achieved by a light source module that comprises at least a first heat sink, which first heat sink comprises a number of dishes, which dishes are formed to achieve air gabs there between, which dishes comprises at least one opening for the dechroic reflector, which dishes are placed radially around the dechroic reflector, which air gabs between the dishes are directed mostly perpendicularly to a centre axis of the light source module.

Abstract: A substrate for mounting a light-emitting element that has excellent efficiency in extracting light from a light-emitting element and can be manufactured at a low cost. The substrate for mounting a light-emitting element 11 has a metal base material 12 in which a reflective cup portion 14 for reflecting a light emitted from a light-emitting element 15 toward a predetermined direction is formed, and an enamel layer 13 that covers the surface of this metal base material 12, with the thickness of the enamel layer 13 being within a range of 30 ?m to 100 ?m.

Abstract: A metal bracket that supports a plurality of lamp units is configured so as to be housed in the lamp chamber and to be tiltably supported by a lamp body. In this situation, a portion of the lamp body is configured so as to be a heat sink. The heat sink and the metal bracket are connected to each other by a flexible heat pipe. With this arrangement, the heat that is generated by light emitting elements included in lamp units is allowed to move to the heat sink via the metal bracket and the flexible heat pipe, and is thereby released into the space that is outside the lamp chamber. Further, due to the transformation of the flexible heat pipe having flexibility, even when the metal bracket is tilted, it is possible to easily maintain the water-proof function of the lamp without hindering the movement of the metal bracket.

Abstract: A lighting apparatus that includes an outer housing defining an intake vent and an exhaust vent, an inner housing disposed within the interior of the outer housing, and an air path defined between the outer housing and the inner housing. The outer housing includes a cover, a top and a plurality of side walls that define the interior, and the inner housing includes a top and a plurality of side walls that correspond to the top and plurality of side walls of the outer housing. The air entering the outer housing through the intake vent travels along the air path and exits the outer housing through the exhaust vent.

Abstract: An incandescent lamp may be formed from a shell having an exterior side and an interior side defining a cavity, and with an internal wall defining a through passage extending from the exterior side to the interior side. A light source is located in the cavity facing the interior side, and coupled to electric lamp leads extending through the passage. A heat radiator assembly is adjacent the exterior side, and includes heat-dissipating surfaces exposed to air. An integral power supply is enclosed in the heat radiator assembly and electrically connected to the light source through the electric lamp leads. A threaded base having exterior electrical contact points is electrically connected through base leads to the integral power supply. The shell, radiator assembly and base are mechanically coupled as a unit. A lens may cover the shell to enclose the cavity and light source.

Abstract: Disclosed herein is an LED light. The LED light comprises a socket electrically connected to a receptacle, and a cooling fan for forcibly circulating air. The cooling fan is received in a main body, which has a plurality of radial partition walls formed on the outer peripheral surface thereof in such a manner as to be spaced apart from one another with a gap having a slit shape for ventilation. A plurality of LEDs is attached to the outer periphery and/or the inner leading edge of the main body. A circuit board is provided to control the light such that an alternating current supplied from the socket is rectified into a direct current, which is supplied to the cooling fan and the LED.

Abstract: A light source device (18) includes a light source (1) constructed by a light emitter (1a) surrounded by a reflector (2); and a supporting member (20) for holding the reflector (2), and passages of cooling air are formed above and below the reflector (2). First and second openings (21b) and (21a) as passages of cooling air are opened in upper and lower portions, respectively, of the reflector (2). Near the opening (21a) on the lower side, a wind direction switching member (23) is disposed on the supporting member (20). The wind direction switching member (23) makes cooling air from the opening (21a) flow upward to a side of the light emitter (1a) in a state where the supporting member (20) is placed on a desk, and makes the cooling air flow directly to an upper portion of the light emitter (1a) via the opening (21a) in a state where the supporting member (20) is hung from a ceiling.

Abstract: A lamp unit includes a reflector with a lamp mounted therein, a reflector holder holding the reflector, and an ejector member fixed to the reflector holder, for ejecting air to cool the lamp, the ejector member including an insertion member with a tubular stud inserted therein for supplying compressed air, a fluid passage forming member having a fluid passage for being supplied with air from the stud, and a hole defined in a distal end of the ejector member.

Abstract: A light fixture (10) is provided having an upper housing (11), a light diffusor (12), a light source (13), and a heating source (14). The housing includes a mounting plate (17) adapted to be mounted to the ceiling of a structure in conventional fashion. The upper housing includes an upper wall, two oppositely disposed side walls (18), a bottom wall (19) spanning the side walls, and an annular airflow ring (21). The bottom wall has a central opening (23) therein. The airflow ring has a plurality of air exhaust holes (24) and a plurality of air intake holes (25). The mounting plate, bottom wall, and two side walls form an air channel (28) in fluid communication with the exhaust holes of the airflow ring. The heat source includes a pair of heating elements (38) mounted within the airflow channel and a motorized fan (39).

Abstract: A multiple-set heat-dissipating structure for a LED lamp for performing the heat dissipation of the LED set includes a heat-conducting base, a plurality of heat pipes and a plurality of heat-dissipating bodies. On end face of the heat-conducting base is used for adhering to and contacting with the LED set. Each heat pipe has a heat-absorbing end and a heat-releasing end, respectively. The heat-absorbing end is connected to the other end face of the heat-conducting base. Each heat-dissipating body has a hollow cylinder. The outer periphery of the cylinder is formed with a plurality of radial heat-dissipating pieces and is connected on the heat-releasing end of each heat pipe. By dispersing each heat pipe and heat-dissipating body, the heat generated by the operation of the LED set can be conducted and dissipated by each heat pipe and heat-dissipating body at multiple points. In this way, the LED set can be continuously operated under a suitable working temperature and thus its life can be elongated.

Abstract: A heat-dissipating structure for a LED lamp includes a heat-dissipating base, a heat-dissipating body and a plurality of heat pipes. The heat-dissipating body has an outer cylinder formed into a hollow cylinder. The inside surface of the outer cylinder is provided with a plurality of accommodating grooves. The condensed ends of the plurality of heat pipes are inserted into the accommodating grooves. The end to be heated of the heat pipe is adhered to the heat-dissipating base. Further, the inside surface and the outside surface of the outer cylinder are formed with a plurality of heat-dissipating fins made by aluminum extrusion, so that the heat pipes are encircled by the heat-dissipating fins. In this way, the heat can be conducted by the plurality of heat pipes so as to increase the total contacting area. Thus, the heat can be rapidly conducted to the outer cylinder.

Abstract: A lamp assembly including an integral reflector and heat sink having a reflector portion comprising an integrated heat sink and a plurality of integral cooling fins connected to the integrated heat sink, a cathode assembly mechanically coupled to the reflector portion, an anode mechanically coupled to the reflector portion and electrically isolated from the cathode assembly, and at least one thermal stress reduction feature.

Abstract: A lighting device with a multiple cooling layer structure has at least one mounting heat conductive block, at least one light assembly and multiple heatsinks. The mounting heat conductive block has a front end, a rear end, a side and at least one shoulder. Each shoulder is formed at the side of the mounting bracket. The light assembly is mounted on the front end of the mounting bracket. Each heatsinks is mounted on one of the shoulders and the rear end of the mounting bracket. When the lighting device generates heat, the heat is able to drive away from the mounting bracket to the heatsinks. The lighting device is able to cool down. The mounting heat conductive block and the heat sinks are easy to manufacture and transfer heat more effectively.

Abstract: Some embodiments of the present invention provide a combination lighting and ventilating apparatus for installation in a structure. The apparatus can include a main housing having a first aperture that defines a ventilating inlet and a lighting outlet, a lamp housing recessed within the main housing, having first and second apertures spaced a distance from one another, and having a portion that extends outside of the main housing, and a lamp recessed within the lamp housing and the main housing. In some embodiments, the apparatus further includes a fan positioned to draw air into and through the first aperture of the lamp housing, around the lamp, and through the second aperture of the lamp housing. In another aspect of the invention, a method of lighting and ventilating a room using a combination lighting and ventilating apparatus is provided.

Abstract: A light source module comprises a case, a light source, a first air-circulation device, a second air-circulation device and an airflow guide. The case has an airflow outlet, and other components are disposed therein. The airflow guider includes a first stream-guiding part and a second stream-guiding part connected thereto. The first stream-guiding part and the airflow outlet are at a same side of the light source, the second stream-guiding part is over the light source. The first airflow provided by the first air-circulation device passes past the light source, arrives at the first stream-guiding part, flows from the front of the light source towards the back of the light source guided by the second stream-guiding part, and mixes up with the second airflow provided by the second air-circulation device and finally exits from the airflow outlet. Therefore, concentrated heat is prevented at the airflow outlet.

Abstract: A Light Emitting Diode (LED) light tube is applied to be directly inserted to two pairs of electrode insertion holes of a fluorescent light tube fixture to replace a fluorescent tube. The LED light tube comprises a heat-dissipating base, a plurality of linear-extend LEDs and a light-transmissible shell, wherein an arrangement surface of the heat-dissipating base is arranged with the linear-extend LEDs, a peripheral surface of the heat-dissipating base is formed with a plurality of heat-dissipating grooves, two end-surfaces of the heat-dissipating base are respectively connected a pairs of electrodes to be inserted into the electrode insertion holes, and the light-transmissible shell including an opening for covering and assembling to the arrangement surface to package the linear-extend LEDs with the heat-dissipating base.

Abstract: Disclosed herein is an illumination system for use in display systems employing spatial light modulators. The illumination system comprises a fastening mechanism for securing the bonding of the walls of the light integrator of the illumination system. A heat dissipation mechanism can be alternatively provided for reducing the temperature of the illumination system by dissipating the heat thereof.

Abstract: The present invention provides a radiator for a light emitting unit, annexed to the light emitting unit including a multiplicity of light emitting diodes mounted on substantially the same axis line on a first principal surface of a wiring substrate. The radiator includes a radiating plate and a heat pipe. The radiating plate is combined with the wiring substrate, with a first principal surface faced as a faying surface to a second principal surface opposite to the first principal surface of the wiring substrate, and is provided with a heat pipe fitting portion. The heat pipe is mounted into the heat pipe fitting portion of the radiating plate while keeping close contact with the inner wall of the heat pipe fitting portion. The heat generated from the light emitting diode group is transferred to a radiating means through the radiating plate and the heat pipe.

Abstract: A lamp assembly includes a reflector body having an integral crimping portion that extends inwardly over a channel formed in the reflector body, a seal feature arranged within the channel, a cathode assembly having an edge feature extending into the channel, and a resilient member held in a state of compression between the crimping portion and a first surface of the edge feature such that an opposing second surface of the edge member is held against the sealing feature thereby creating a hermetic seal between the cathode assembly and the reflector body wherein the crimping portion is configured to remain in contact with the resilient member if the hermetic seal becomes non-hermetic.

Abstract: A heat sink structure for light-emitting diode (LED) based streetlamps is disclosed, which comprises an upper cover, on which heat sink fins are integrally formed, and a lower cover. The heat energy generated by the LEDs mounted within the upper cover and the lower cover can be removed through the heat sink fins, achieving the effect of rapid removal of the heat energy.

Abstract: A lighted display panel includes a plurality of illumination layers, with each layer having leading and trailing edges. Each of the layers has a cross section in which the leading and trailing edges are angled toward an upper or lower face of the layer. In some cases, the leading and trailing edges are offset from one another. In other cases, the illumination layer has a wing shape. Lighting elements (e.g., LEDs) are located in the leading edges of the illumination layers. The illumination layers define vents through which air may flow, but which obstruct the passage of light.

Abstract: In accordance with the present invention, a light-emitting element mounting board is provided including an enamel layer which covers the surface of a core metal, wherein reflective cup portions for mounting light-emitting elements are provided on one face of the board, and wherein a heat radiating part is formed by at least partially removing the enamel layer on the other face of the board, and exposing the core metal. Further, a light-emitting element module including light-emitting elements mounted thereon, a lighting device including the light-emitting element, a display device, and traffic signal equipment are provided.

Abstract: A lamp housing for a projector is for accommodating at least a lamp, and a heat-dissipating fan disposed at one side of the lamp housing. The lamp housing includes a housing body, and a baffle plate. In this case, the housing body has a first opening, and the wind blown by the heat-dissipating fan flows from the first opening into the housing body. The baffle plate is disposed between the housing body and the lamp. The baffle plate and the direction of the wind blown by the heat-dissipating fan form an included angle.

Abstract: A projector apparatus, including: a light source including a high-pressure discharge lamp having a plurality of ventilation holes; an optical unit having a liquid crystal panel for optically modulating to light emitted from the light source in response to an input video signal; a ventilation fan; and cooling means for cooling the light source by blowing cooling-air blown from the ventilation fan to at least the light source, wherein a cooling-air ventilation inlet facing one ventilation hole of the high-pressure discharge lamp is formed at an upper position of a lamp case, which holds and fixes the high-pressure discharge lamp having the plurality of ventilation holes and positions and fixes the optical unit, a cooling-air ventilation outlet facing another ventilation hole of the high-pressure discharge lamp is formed at a lower position of the lamp case, and a tray is provided under the cooling-air ventilation outlet.

Abstract: A headlamp assembly for a motor vehicle, including a housing coupling the headlamp assembly to a frame of the motor vehicle, a light source positioned within the housing for emitting light rays, and a reflector positioned within the housing and configured to direct the light rays into a beam. The reflector is movable with respect to the housing and the light source so as to adjust the beam direction.

Abstract: A light source apparatus according to one embodiment of the present invention is comprised of a light emitting tube having a first electrode in one end and a second electrode in the other end thereof, the tube having both ends closed, a concave-shaped reflector having a hole in its deepest portion, the hole being provided for holding the light emitting tube, a transparent glass plate covering an opening of the reflector, a lead wire whose ends connects to the second electrode and extends out through a hole formed on a side surface of the reflector, respectively, a cooling fan blowing cooling air toward the reflector, and an air guiding member that separates the cooling air from the fan into a first cooling air cooling an outer surface of the reflector and a second cooling air cooling the other end of the lead wire extending out from the reflector.

Abstract: A lighting system for a vehicle comprises a sealed unitary light module including at least one high-intensity power light emitting diode operates with a luminous efficiency of at least about 7 lumens per watt when passing a forward current of at least about 350 milliamps and that emits a luminous flux of at least about 25 lumens when operated at its operating voltage. The sealed unitary light module is removable as a unit from the vehicle and includes a heat dissipating element and a lens.

Abstract: A high power LED lamp comprises a container having a cavity to fill with a liquid, a light source module for providing a high power LED source light to penetrate through the liquid, and an axial thermal conductor having a first portion nearby the light source module and a second portion extending in the liquid along an axial direction of the cavity to far away from the light source module to evenly transfer heat from the light source module through the liquid to the container.

Abstract: A projector light source which facilitates molding of a reflector for obtaining a complicated reflecting surface and provides an improved cooling efficiency, which is characterized by molding the reflector of the light source using heat resistant plastic mixed with a high heat conductive material, whereby a molding accuracy is drastically improved compared to a heat resistant glass reflector, and a highly efficient light source is implemented by increasing a degree of design freedom using a high-order non-spherical reflecting surface. Furthermore, heat conductivity is increased by the use of a high heat conductive material for the reflector and heat dissipation to an outside is facilitated.

Abstract: A temperature control method for a display device comprising a lamp box for emitting a light, a fan for cooling down the display device and a digital image device for receiving the light from the lamp box and forming an image, comprises acquiring an operating time of the lamp box; calculating a temperature offset in accordance with the operating time of the lamp box; acquiring a temperature value of the digital image device; calculating a control value in accordance to the temperature value and the temperature offset; controlling the fan in accordance with the control value.

Abstract: A lighting apparatus is described. One embodiment of the lighting apparatus includes a substrate and a lighting element. The lighting element is coupled to the substrate to emit light through a light exit plane. The light exit plane is substantially perpendicular to the substrate. By providing a lighting device with a substrate oriented perpendicular to the light exit plane of the lighting device, the lighting device can enable better mixing of the light from different LEDs. The lighting apparatus facilitates light mixing, generally, to minimize or eliminate dark spots on the diffusion panel. The lighting device also facilitates color mixing to produce relatively consistent white light on the diffusion panel.

Abstract: A light-emitting diode (LED) device has a shade, an active heat-dissipation device and an LED module. The shade has a cavity. The active heat-dissipation device is mounted in the cavity in the shade and has a cooling board, an evaporator, a condenser, a compressor, an expansion valve and a refrigerant. The evaporator, condenser, compressor and expansion valve connect to each other to form a loop. The refrigerant is set in the loop. The LED module is mounted to the active heat-dissipation device and has at least one LED. The active heat-dissipation device dissipates the heat from the LED and even lowers the temperature of the LED under ambient temperature.

Abstract: A system and method of cooling a bulb of a type that requires cooling in one part, but not in others. A deflector assembly is coupled through a reflector, to the bulb, to cool only one part.

Abstract: With this projector, by forming in a lamp casing an aperture, for leading out a wire connected to an electrode terminal of a lamp, near that electrode terminal, and by fitting an insulating member which has an opening portion for leading out this wire, and a lid member which covers this opening portion, to this wire lead out aperture, even though the lamp casing is made from metal, still it is possible to ensure adequate clearances and creepage distances between the electrode terminal and the lamp casing. Furthermore it is possible to prevent light, or air which has been heated up, from leaking out from the wire lead out aperture.

Abstract: A utility lamp (1) comprises a curved reflector (2) having a spherically curved surface. An array of LEDs (3) is arranged in an electrical circuit on a thin substrate mounted via thermally conductive epoxy on a thermally-conductive base (4), which in turn forms an integral part of the reflector (2). The LEDs are mounted for efficient heat transfer by conduction to the reflector (2). The reflector (2) thus operates as both a light reflector and as a radiative heat sink. The heat radiating properties of the reflector are enhanced by integral fins (7) extending in the radial direction around the periphery of the reflector (2). The reflector (2) is of integral aluminium construction.

Abstract: A light module includes a lighting unit, a heat-dissipation plate and an insulative plate. The lighting unit has a leading contact. The heat-dissipation plate contacts the lighting module closely and has a channel corresponding to the leading contact. The insulative plate is disposed under the heat-dissipation plate, and has a predetermined conductive pattern arranged thereon and a through hole corresponding to the channel. The leading contact of the lighting unit penetrates through the channel of the heat-dissipation plate and the through hole of the insulative plate to electrically connect with the predetermined conductive pattern of the insulative plate.

Abstract: A lamp system having a housing, wall portions defining a cavity and an opening. A light source, generally an LED, is located within the cavity and at least one thermoelectric device is disposed in one of the wall portions. The thermoelectric device has a first side oriented towards the cavity and the second side oriented away from the cavity. When in operation, the thermoelectric device will transfer heat from inside the cavity, via the first side of the thermoelectric device, to the second side of the thermoelectric device.

Abstract: A nose cone for a projector lamp having a lamp burner and a reflector, includes a metal shell, having a rear edge configured to attach to a forward edge of the reflector, and configured to cooperate with the reflector to substantially enclose the lamp burner. The metal shell includes means for dissipating heat therefrom.

Abstract: The invention envisages a light-generating apparatus that provides effective cooling of the reflector, the apparatus comprising a reflector and a device for improving the dissipation of heat from the reflector.

Abstract: A filtering device and a projector utilizing the same. The filtering device receives an electronic device therein, and includes a housing, a filter, a fan, a first temperature sensor, a second temperature sensor, a circuit board, and an alarm. The first temperature sensor detects a first temperature outside the housing. The second temperature sensor detects a second temperature inside the housing. The circuit board includes a controller to be coupled to the fan, the first temperature sensor, and the second temperature sensor. When the second temperature detected by the second temperature sensor exceeds the first temperature detected by the first temperature sensor, the voltage of the fan is increased by the controller to increase the rotation speed of the fan. The alarm is coupled to the controller. When the voltage of the fan exceeds a critical value, the alarm is actuated to indicate that the filter needs to be changed.

Abstract: A lamp with a reflector comprises a high pressure discharge lamp and a reflector. The reflector has a first opening and a second opening. Clearance between a sealing portion of the high pressure discharge lamp and the second opening is substantially filled. The sealing portion includes a first glass portion extending from a luminous bulb and a second glass portion provided in the inside of the first glass portion, and the sealing portion has a portion to which a compressive stress is applied. Moreover, when the sealing portion is disposed to extend in a substantially horizontal direction, a portion of the reflector is formed with an air inlet for introducing an air flow striking against an upper portion of the luminous bulb 1 and then coming into a lower portion of the luminous bulb 1.