WO2010150366A1 - 光源装置およびこれを備えた投写型表示装置 - Google Patents
光源装置およびこれを備えた投写型表示装置 Download PDFInfo
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- WO2010150366A1 WO2010150366A1 PCT/JP2009/061496 JP2009061496W WO2010150366A1 WO 2010150366 A1 WO2010150366 A1 WO 2010150366A1 JP 2009061496 W JP2009061496 W JP 2009061496W WO 2010150366 A1 WO2010150366 A1 WO 2010150366A1
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- WIPO (PCT)
- Prior art keywords
- light emitting
- emitting element
- light source
- hole
- source device
- Prior art date
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/56—Cooling arrangements using liquid coolants
- F21V29/59—Cooling arrangements using liquid coolants with forced flow of the coolant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a light source device and a projection display device including the same.
- a means for cooling the LED module for example, a large heat sink and an air cooling fan are provided on the back side of a copper substrate of about 30 mm square on which the LED as a light emitting element is mounted, that is, on the side opposite to the light emitting surface of the LED. Means such as attachment are taken.
- a large heat sink and an air cooling fan are provided on the back side of a copper substrate of about 30 mm square on which the LED as a light emitting element is mounted, that is, on the side opposite to the light emitting surface of the LED.
- Means such as attachment are taken.
- FIGS. 1 to 3 of Patent Document 1 Japanese Patent Laid-Open No. 2007-148341
- there is also an efficient cooling method such as a liquid cooling method in which a water-cooling heat receiving jacket is attached to the back side of the substrate and cooled. It is taken.
- the thermal resistance from the junction between the LED and the substrate to the back side of the LED substrate, and the allowable temperature of this junction generally depend on the form of the LED module.
- specifications and data sheets also describe the thermal resistance value (hereinafter referred to as Rj-b) between the joint and the back side of the LED substrate, and the allowable temperature of the joint.
- the junction temperature affects the life of the light source, and as the junction temperature increases, the life of the light source decreases accordingly.
- a projection display device using an LED light source has advantages such as a long light source life, a wide color reproduction range compared to a discharge lamp, and an instant lighting / extinguishing capability. Therefore, in order to realize a projection display device having a long light source lifetime, it is desirable to prevent the junction temperature from exceeding an allowable range, or to use the junction temperature as low as possible.
- the thermal resistance Rj-b and the supply power The temperature rise value from the junction to the back side of the LED substrate can be calculated. Furthermore, since the limit temperature of the junction is determined, if the ambient temperature is determined, the limit of power supplied to the LED module can be calculated.
- the temperature rise from the junction to the back side of the LED substrate is 105 ° C. If the ambient temperature is 35 ° C., the junction temperature is 140 ° C. by adding this ambient temperature to the temperature rise 105 ° C.
- the maximum allowable temperature of the LED junction temperature is about 120 to 130 ° C. For this reason, when a large power exceeding 150 W is supplied, there is a problem that the junction temperature exceeds the maximum allowable temperature.
- the present invention provides a solution that can solve the problems of the background art as described above.
- An example of the object is to provide a light source device capable of effectively cooling the surface side of a substrate on which a light emitting element is mounted, and a projection display device including the light source device.
- another object is to provide a light source device that does not require a new space for the light emitting element cooling means on the substrate surface side and a projection display device including the same.
- the light source device of one embodiment of the present invention includes a substrate, a light-emitting element mounted on the substrate, and a first member.
- the substrate is provided with a first through hole and a second through hole.
- the first member is disposed so as to surround the first through hole, the second through hole, and the light emitting element, and forms a flow path that passes through the light emitting surface of the light emitting element together with the substrate. And the 1st through-hole and the 2nd through-hole, and the channel are connected.
- the projection display device of one embodiment of the present invention includes the above-described light source device.
- the light emitting surface of the light emitting element is passed between the substrate and the optical element supporting member disposed so as to surround the light emitting element.
- a flow path is formed through which a fluid capable of cooling the light emitting surface flows.
- the flow path that is, the internal space between the optical element member and the substrate functions as a light emitting element cooling means. Therefore, it is not necessary to separately provide a means for cooling the heat generated from the light emitting element outside the optical element supporting member surrounding the light emitting element on the substrate surface. Therefore, it is not necessary to newly secure a cooling unit space on the light emitting surface side of the light emitting element, that is, on the substrate surface side.
- the heat accompanying the radiation of the light emitted from the light emitting surface of the light emitting element can be cooled by the convection of the fluid passing through the light emitting surface.
- a projection display device can be provided.
- FIG. 1 is a perspective view of a light source device according to a first embodiment of the present invention. It is the top view seen from the light emission surface side of the light source device which concerns on the 1st Embodiment of this invention. It is sectional drawing in the cut surface of the light source device shown in FIG. It is a schematic block diagram explaining operation
- FIG. 1 is an exploded view showing the configuration of the light source device according to the first embodiment of the present invention.
- FIG. 2 is a perspective view of the light source device according to the first embodiment of the present invention.
- FIG. 3 shows a top view of the light source device according to the first embodiment of the present invention viewed from the light emitting side.
- FIG. 4 shows a cross-sectional view of the light source device of FIG.
- FIG. 5 is a schematic diagram for explaining the operation of the light source device of FIG. Note that the radiator is not shown in FIGS.
- the light source device includes a light emitting element module support member 100, a light emitting element module 200, an optical element support member 300, an optical element 400, a fixing screw 500, and a radiator 600.
- a light emitting element module support member 100 As illustrated in FIG. 1, the light source device according to the first embodiment of the present invention includes a light emitting element module support member 100, a light emitting element module 200, an optical element support member 300, an optical element 400, a fixing screw 500, and a radiator 600.
- the light emitting element module support member 100 can support the light emitting element module 200 as shown in FIG. 4 and is disposed on the side opposite to the light emitting surface 211 side of the light emitting element 210. Further, in the light emitting element module support member 100, a cylindrical pipe line 150 through which a fluid, particularly a gas flows, is provided.
- the pipe 150 has first and second holes 110 and 111 that communicate with a flow path 700 formed by the optical element support member 300 and the light emitting element module support member 100.
- the fluid inlet or the fluid outlet of the pipe line 150 includes a first hole 110, a second hole 111, a third hole 120, and a fourth hole 121.
- the first hole 110 is connected to the third hole 120
- the second hole 111 is connected to the fourth hole 121.
- fluid is supplied by a fluid supply means (not shown) provided outside the light emitting element module support member 100.
- This fluid flows into the third hole 120 of the conduit 150 as shown in FIG.
- the fluid that has flowed into the third hole 120 flows into the flow path 700 from the first hole 110 through the pipe 150.
- the fluid is heated by passing through the light emitting surface 211 of the light emitting element 210 disposed in the flow path 700, and then flows into the pipe line 150 from the second hole 111.
- the fluid is discharged out of the light emitting element module support member 100 from the fourth hole 121 which is an outlet.
- the fluid flow shown in FIG. 4 flows from the third hole 120 arranged at the right end of the pipe line 150 as described above, and finally the fourth flow arranged at the left end of the pipe line 150.
- the pipe line 150 and the flow path 700 may be configured so that the fluid that has passed through the pipe line 150 flows into the flow path 700 from at least one of the two holes 110 and 111. More specifically, the fluid flows in from the fourth hole 121 arranged at the left end of the conduit 150 and finally the fluid is discharged from the third hole 120 arranged at the right end of the conduit 150. It may be a form.
- the pipe line 150 has two edges that form the first hole 110 and the second hole 111.
- the two edge portions protrude from the tube 150 side of the light emitting element module support member 100 toward the flow path 700 formed by the substrate 290 and the optical element support member 300 (see FIG. 4).
- Each of the protruding edges (projections) is inserted into a plurality of through holes 220 provided in the substrate 290 of the light emitting element module 200.
- the light emitting element module 200 is assembled with the light emitting element module support member 100 so as to be aligned with high accuracy. That is, each edge functions as a positioning unit for the light emitting element module 200 with respect to the light emitting element module support member 100.
- each edge may be provided at an arbitrary position of the light emitting element module support member 100. Although two are provided in FIG. 1, three or more may be provided. In addition, each edge may be formed integrally with the light emitting element module support member 100, or may be constituted by a separate cylindrical part and press-fitted into the light emitting element module support member 100.
- the light emitting element module support member 100 is integrally formed using a material having high thermal conductivity such as copper or aluminum.
- the light emitting element module support member 100 can be formed as a plurality of components with the position of the third hole 120 or the fourth hole 121 as the boundary of the components.
- the light emitting element module 200 is attached to the surface of the light emitting element module support member 100 provided with the plurality of holes 110, 111, 120, and 121 (see FIG. 1).
- the light emitting element module 200 includes a substrate 290 and a light emitting element 210.
- the light emitting element 210 is mounted on the substrate 290 and has a light emitting surface 211 that emits light to the optical element 400 side.
- the substrate 290 has a plurality of through holes 220 extending in the thickness direction.
- Each through hole 220 can be provided at an arbitrary position on the substrate 290 corresponding to the position of each edge forming the first hole 110 and the second hole 111. In FIG. 1, two edge portions are provided, but three or more edge portions may be provided. In particular, since the accuracy of the position of the light emitting element 210 is required, each through hole 220 is preferably provided as close to the light emitting element 210 as possible.
- each edge may have a hollow cubic shape, and the exit of each through hole may have a polygonal shape.
- the light emitting element module 200 further includes a power connector 230, a power cable 240, a temperature sensor connector 250, and a temperature sensor cable 260 as shown in FIG.
- a power cable 240 is inserted into the power connector 230, and a temperature sensor cable 260 is inserted into the temperature sensor connector 250.
- each of the power connector 230 and the power cable 240 shown in FIG. 2 has two terminals, but an arbitrary number of terminals can be adopted depending on the configuration of the light emitting chip of the light emitting element 210.
- the light emitting element 210 emits light when electric power is supplied to the light emitting element module 200 from a power source (not shown) via the power cable 240.
- the temperature sensor cable 260 is connected to a temperature measurement component (not shown) mounted on the light emitting element module 200, and is wired through the temperature sensor connector 250.
- a thermistor or the like is used as the temperature measurement component, and the temperature of the light emitting element 210 can be monitored by this temperature measurement component.
- the optical element supporting member 300 is placed on the light emitting element module supporting member 100 as shown in FIG. 4 showing a cross section taken along the cutting line 800 in FIG. Note that the cutting line 800 is on a straight extension line connecting the first hole 110, the second hole 111, the third hole 120, the fourth hole 121, and the light emitting element 210.
- the optical element support member 300 is disposed on the light emitting surface 211 side so as to surround the substrate 290 and the light emitting element 210 and supports the optical element 400. Further, the optical element support member 300 is provided with a hole for communicating the flow path 7 with each of the first hole 110 and the second hole 111.
- the optical element support member 300 forms a flow path 700 together with the substrate 290.
- the flow path 700 extends along the cutting line 800.
- the flow path 700 is formed in a concave shape in the optical element support member 300.
- a fluid, particularly gas, that can cool the light exit surface 211 by passing through the light exit surface 211 flows through the flow path 700.
- the optical element 400 is composed of a plurality of lenses as shown in FIG. 4, and refracts the light emitted from the light emitting surface 211. Further, the optical element 400 is disposed in a recess provided on the upper part of the optical element support member 300 located on the light emitting surface 211 side of the light emitting element 210 (see FIG. 4). Note that a portion of the optical element 400 that is close to the light emitting element 210 captures as much light emitted from the light emitting element 210 as possible, and thus is preferably as close to the light emitting element 210 as possible.
- the fixing screw 500 is means for fixing the light emitting element module 200 to the light emitting element module support member 100 as shown in FIG.
- FIGS. 1 to 3 show a form in which both members 100 and 200 are fixed with four screws, the number of the members can be selected as appropriate.
- the heat radiator 600 is attached to a surface opposite to the surface on which the light emitting element module 200 is placed on the light emitting element module support member 100 as shown in FIG.
- the radiator 600 is made of a metal part having high thermal conductivity such as copper or aluminum, and it is preferable to improve the cooling performance by applying air with an axial fan or the like.
- a TIM Thermal Interface Module
- a heat conductive paste or a heat conductive sheet is provided at a contact portion between the light emitting element module 200 and the light emitting element module support member 100. It is preferable to insert. Or you may insert this TIM in the contact location of the light emitting element module support member 100 and the heat radiator 600.
- the light source device configured as described above has the following effects.
- the light emitted from the light emitting element 210 passes through the optical element 400 and illuminates the projection system optical component at the subsequent stage.
- the light emitting element 210 emits heat as the light is emitted, but an LED is used for the light emitting element 210, and about 90% of the supplied power is unintended heat.
- heat is radiated from the light emitting element 210 in a radial manner as indicated by arrows 270 and 280.
- the heat radiated in the direction indicated by the arrow 280 is transmitted to the light emitting element module support member 100 by heat conduction, which is a heat transfer form between solids, and then transmitted to the radiator 600.
- the radiator 600 Since the radiator 600 has a large number of fins and is made of a metal material having high thermal conductivity, the heat transmitted to the radiator 600 is quickly transmitted to the fins. As a result, heat is exchanged by convection of the fluid around the fins for efficient cooling. *
- the cooling fluid that has entered the third hole 120 of the conduit 150 enters the flow path 700 through the first hole 110 as indicated by the arrow 130 in FIG. Thereafter, the fluid passes through the light emitting element 210 and is exhausted from the second hole 111 through the fourth hole 121.
- the structure for generating and supplying the fluid entering the third hole 120 is omitted, but a flow path for guiding the fluid to the third hole 120 is formed, and the fluid is supplied by a blower fan or an air pump. You may blow in the direction of arrow 130. Alternatively, the wind may be sucked in the direction of arrow 140 from the fourth hole 121 with a blower fan or the like.
- the heat radiated from the light emitting element 210 indicated by the arrows 270 and 280 is transmitted through the light emitting element module support member 100 and cooled from the radiator 600, and the fluid supplied from the first hole 110. Cooled by two ways with the method cooled by. Therefore, it can cool efficiently also with respect to more calorific value. As the cooling performance is increased, more power can be supplied to the light emitting element 210, so that the light emitting element 210 can emit brighter light.
- the light emitting surface 211 can be cooled by passing the light emitting surface 211 of the light emitting element 210 between the substrate 290 and the optical element supporting member 300 disposed so as to surround the light emitting element 210.
- a flow path 700 through which a fluid flows is formed. Accordingly, the flow path 700, that is, the internal space between the optical element member and the substrate 290 functions as the light emitting element 210 cooling means. Therefore, it is not necessary to separately provide a means for cooling the heat generated from the light emitting element 210 outside the optical element support member 300 surrounding the light emitting element 210 on the surface of the substrate 290. Therefore, it is not necessary to newly secure a cooling unit space on the light emitting surface 211 side of the light emitting element 210, that is, on the surface side of the substrate 290.
- FIG. 6 is an exploded view showing the configuration of the light source device according to the second embodiment of the present invention.
- FIG. 7 shows a perspective view of a light source device according to the second embodiment of the present invention. In this figure, the radiator is omitted.
- FIG. 8 shows a top view of the light source device according to the second embodiment of the present invention viewed from the light emitting side. In this figure, the radiator is also omitted.
- FIG. 9 shows a cross-sectional view of the light source device shown in FIG. This cutting line is a straight line connecting the outlet, the inlet, the inlet, the outlet, and the light emitting element, as in FIG. 3 showing the light source device according to the first embodiment.
- FIG. 10 is a schematic configuration diagram showing the operation of the light source device shown in FIG.
- the optical element support member 300 is provided with a plurality of flow paths 700 and 710, and the flow path 710 has two discharge paths. This is a point having an outlet 711. More specifically, the optical element support member 300 of the light beam device according to the present embodiment forms another flow path 710 that extends in a direction perpendicular to the direction in which the flow path 700 extends together with the substrate 290. Another channel 710 has two outlets 711 arranged in a direction perpendicular to the direction in which the channel 700 extends. Then, the fluid flows into the flow path 700 from both of the two holes 110 and 111 of the pipe line 150. Furthermore, the fluid heated through the light emitting surface 211 arranged in the flow path 700 is discharged from the two discharge ports 711 through another flow path 710.
- the form in which the fluid is supplied from both of the two holes 110 and 111 can increase the flow rate as compared with the form in which the fluid is supplied from one of the holes, thereby improving the cooling performance. Furthermore, since the flow path 710 different from the flow path 700 is formed by the optical element support member 300 and the substrate 290, the flow path volume in the optical element support member 300 increases. Further, since two discharge ports 711 are provided in another flow path 710, the flow volume of the fluid heated by heat exchange with the radiant heat generated from the light emitting surface 211 of the light emitting element 210 is increased. It is effectively discharged out of the light source device from the two discharge ports 711 through another increased flow path 710.
- the light source device configured as described above has the following effects.
- heat is radiated radially from the light emitting element 210 as indicated by arrows 270 and 280.
- the heat radiated in the direction indicated by the arrow 280 is transmitted to the light emitting element module support member 100 by heat conduction, which is a heat transfer form between solids, and then transmitted to the radiator 600. Since the radiator 600 has a large number of fins, the heat transferred to the fins is efficiently cooled by heat exchange by convection of fluid around the fins. *
- the fluid that has entered the third hole 120 of the conduit 150 enters the flow path 700 through the first hole 110, and passes through the light emitting surface 211 of the light emitting element 210. It passes through and is exhausted from the two outlets of the flow path 710. Further, as indicated by an arrow 140 in FIG. 10, the fluid that has entered the fourth hole 121 of the conduit 150 enters the flow path 700 through the second hole 111. Then, the fluid passes through the light emitting element 210 and is discharged from the two outlets 711 of the channel 710 as indicated by an arrow 720 in FIG. In FIG. 10, the structure for generating and supplying the fluid flowing into the third hole 120 and the fourth hole 121 is omitted as in FIG.
- a flow path that guides the fluid to the third hole 120 may be formed as in the first embodiment, and the fluid may be blown in the direction of the arrow 130 with a blower fan or an air pump. Alternatively, wind may be sucked in the direction of the arrow 140 from the fourth hole 121 with a blower fan or the like.
- the heat radiated from the light emitting element 210 indicated by the arrow 270 in FIG. 10 enters the optical element 210 that enters the flow path 700 through the first hole 110 and the second hole 111 of the conduit 150.
- the heat exchange is effectively performed by the convection of the cooling fluid passing through the light exit surface 211 of the light. Therefore, the heat accompanying the radiation of the light emitted from the light emitting element 210 indicated by the arrow 270 is efficiently cooled.
- the heat radiated from the light emitting element 210 indicated by the arrows 270 and 280 is transmitted from the light emitting element module support member 100 to be cooled from the radiator 600, and the first hole 110 and the second hole.
- the cooling is performed by two methods, that is, cooling by the fluid supplied from 111. Therefore, it is possible to effectively cool even a larger amount of heat generation. As the cooling performance is increased, more power can be supplied to the light emitting element 210, so that the light emitting element 210 can emit brighter light.
- the fluid is the light emitting element 210. May be discharged from the outlet of the flow path 710 without passing through. Therefore, the light emitting element 210 may not be uniformly cooled.
- the extending direction of the flow path 710 of this embodiment is the cutting line 800, that is, the flow so that the fluid flowing from the flow path 700 to the flow path 710 is in the direction of the arrow 720 shown in FIG. It is preferable to be disposed at a position perpendicular to the direction in which the path 700 extends.
- the straight line connecting both outlets 711 of the flow path 710 is also preferably perpendicular to the cutting line 800, that is, the direction in which the flow path 700 extends.
- the light emitting surface 211 of the light emitting element 210 passes between the substrate 290 and the optical element support member 300 disposed so as to surround the light emitting element 210.
- a flow path 700 through which a fluid capable of cooling the light emitting surface 211 flows is formed.
- the flow path 710 different from the flow path 700 is formed by the optical element support member 300 and the substrate 290, the flow path volume in the optical element support member 300 increases. Accordingly, the flow path 700, that is, the internal space between the optical element member and the substrate 290 functions as the light emitting element 210 cooling means.
- FIG. 11 is a schematic diagram showing a configuration of a projection display device to which the light source device according to each embodiment of the present invention is applied.
- 11 includes a light source device 10R, a light source device 10G, a light source device 10B, a color synthesis optical system 20, an illumination optical system 30, a panel unit 40, a light modulation element 41, and a projection optical system 50.
- the projection display device includes a light source device 10R that emits red light, a light source device 10G that emits green light, and a light source device 10B that emits blue light.
- Light-emitting diodes are preferably used for the light source device 10R, the light source device 10G, and the light source device 10B.
- the color synthesis optical system 20 is preferably a cross dichroic mirror or a cross dichroic prism.
- the light source device 10G is linearly transmitted through the color synthesis optical system 20, and the light source device 10R and the light source device 10B are disposed so that the optical path is substantially perpendicular to the light source device 10G.
- the illumination optical system 30 functions to uniformly illuminate the light modulation elements 41 with illumination light from the light source devices 10R, 10G, and 10B.
- the light modulation element 41 is disposed in the panel unit 40.
- the light modulation element 41 is a transmissive liquid crystal panel and uses an FSC (Field Sequential Color) display method.
- FSC Field Sequential Color
- the light modulation element 41 has shown the example which uses the transmissive liquid crystal display panel in FIG. 11, it is not limited to this form. That is, a reflective liquid crystal display panel such as a DMD (Digital Micromirror Device) or an LCoS (Liquid Crystal on Silicon) (registered trademark) panel can be used by changing the layout of the illumination optical system or the projection optical system.
- the projection optical system 50 has a function of projecting illumination light modulated by the light modulation element 41 onto a screen (not shown).
- the red light source, the green light source, and the blue light source are sequentially turned on, and the light modulation elements are used for the R light image signal, the G color video signal, and the B light, respectively. Modulate according to the color video signal. Then, R color, G color, and B color images are sequentially displayed, and they are synthesized and recognized as a color image by human eyes.
- the light of each color emitted from the light source devices 10R, 10G, and 10B is matched with the optical path by the color synthesizing unit 20 to become one optical path.
- the illumination optical system 30 illuminates the light modulation element 41 in the panel unit 40.
- the illumination light incident on the light modulation element 41 is light-modulated by the light modulation element 41, and then an image is projected onto a screen (not shown) by the projection lens 50. *
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- Optics & Photonics (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
Description
図1に本発明の第1の実施形態に係る光源装置の構成を示す分解組立図を示す。図2に本発明の第1の実施形態に係る光源装置の斜視図を示す。図3に本発明の第1の実施形態に係る光源装置を光出射側から見た上面図を示す。図4に図3の光源装置の切断線における断面図を示す。図5に図4の光源装置の動作を説明する概略図を示す。なお、図2と図3では放熱器の図示を省略している。
図6に本発明の第2の実施形態に係る光源装置の構成を示す分解組立図を示す。図7に本発明の第2の実施形態に係る光源装置の斜視図を示す。なお、本図では放熱器を省略している。図8に本発明の第2の実施形態に係る光源装置の光出射側から見た上面図を示す。本図でも放熱器を省略している。図9に、図8に示す光源装置の切断線での断面図を示す。この切断線は、第1の実施形態に係る光源装置を示す図3と同様に流出口、流入口、吸入口、排出口、および発光素子を結ぶ直線となっている。図10に、図9に示す光源装置の動作を表す概略構成図を示す。
110 第1の穴
111 第2の穴
120 第3の穴
121 第4の穴
150 管路
210 発光素子
211 光出射面
290 基板
300 光学素子支持部材(第1の部材)
400 光学素子
700 流路
710 別の流路
711 排出口
Claims (8)
- 第1の貫通穴および第2の貫通穴が設けられている基板と、
前記基板上に実装された発光素子と、
前記第1の貫通孔、前記第2の貫通孔および前記発光素子を取り囲むように配され、前記基板とともに前記発光素子の光出射面を通る流路を形成する第1の部材と、を有し、
前記第1の貫通孔および前記第2の貫通孔と、前記流路とは連通されていることを特徴とする光源装置。 - 請求項1に記載の光源装置であって、前記基板の前記発光素子が実装されている側とは反対の側に配され、前記第1の貫通孔と連通する第1の管路および前記第2の貫通孔と連通する第2の管路が設けられた第2の部材を備えた、光源装置。
- 前記第1の貫通孔と、前記第2の貫通孔は、前記発光素子を挟んで互いに反対側にあることを特徴とする請求項1に記載の光源装置。
- 請求項2または3に記載の光源装置であって、前記第1の管路および前記第2の管路には該第2の部材側から前記第1の部材側へ突出する突起部をそれぞれ有し、該突起部は前記第1の貫通孔に挿入される、光源装置。
- 請求項2または3に記載の光源装置であって、前記第2の部材が放熱部を備えている、光源装置。
- 前記第1の部材には、前記流路の延びる方向に対して垂直な方向に排出口があることを特徴とする請求項1に記載の光源装置。
- 前記排出口とは、前記発光素子を挟んで反対側に他の排出口がある、請求項6に記載の光学装置。
- 請求項1から7のいずれかに記載の光源装置を備えた投写型表示装置。
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PCT/JP2009/061496 WO2010150366A1 (ja) | 2009-06-24 | 2009-06-24 | 光源装置およびこれを備えた投写型表示装置 |
JP2011519426A JP5201612B2 (ja) | 2009-06-24 | 2009-06-24 | 光源装置およびこれを備えた投写型表示装置 |
US13/375,179 US8944638B2 (en) | 2009-06-24 | 2009-06-24 | Light source device and projection type display device including the same |
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PCT/JP2009/061496 WO2010150366A1 (ja) | 2009-06-24 | 2009-06-24 | 光源装置およびこれを備えた投写型表示装置 |
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US8944638B2 (en) | 2015-02-03 |
JPWO2010150366A1 (ja) | 2012-12-06 |
JP5201612B2 (ja) | 2013-06-05 |
US20120069586A1 (en) | 2012-03-22 |
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