JP2023140082A - Light source system and image projection device - Google Patents

Abstract

To efficiently cool a heating part for improving efficiency of an optical element.SOLUTION: A light source system comprises: a plurality of light emission heating parts which generate heat when emitting light; a light reception heating part which generates heat when being irradiated with the light; a first heat release part which releases heat of the light emission heating part; a second heat release part which releases heat of the light reception heating part; and a container which stores the light emission heating part and the light reception heating part inside. The container includes a first surface and a sixth surface opposed to each other and a second surface and a third surface opposed to each other. The two or more light emission heating parts are provided on the first surface of the container. The first heat release part is provided on the first surface of the container. The second heat release part is provided along at least one of the second surface and the third surface of the container.SELECTED DRAWING: Figure 1

Description

The present invention relates to a light source system and an image projection device.

Patent Document 1 below discloses that a laser light source that emits laser light and a phosphor that emits fluorescence when excited by the laser light are arranged for the purpose of outputting high-intensity fluorescence using a laser light source and a phosphor. A configuration is disclosed that includes at least two phosphor substrates having a phosphor structure and an optical element that spatially combines fluorescence emitted from each of the at least two phosphor substrates.

However, the technique disclosed in Patent Document 1 cannot efficiently cool the heat generating part in order to improve the efficiency of the optical element.

In order to solve the problems of the prior art described above, it is an object of the present invention to make it possible to efficiently cool a heat generating part in order to improve the efficiency of an optical element.

In order to solve the above-mentioned problems, a light source system according to one embodiment includes a plurality of light emitting heat generating parts that generate heat when emitting light, a light receiving heat generating part that generates heat when exposed to light, and a plurality of light emitting heat generating parts that generate heat when exposed to light. a first heat radiating part that radiates heat from the light receiving heat generating part; a second heat radiating part radiating heat from the light receiving heat generating part; and a container accommodating the light emitting heat generating part and the light receiving heat generating part. The container has a sixth surface, a second surface and a third surface facing each other, two or more light emitting heat generating parts are provided on the first surface of the container, and the first heat radiating part is provided on the first surface of the container. The second heat radiation section is provided along at least one of the second and third surfaces of the container.

According to the image processing device according to one embodiment, the heat generating section can be efficiently cooled to improve the efficiency of the optical element.

Internal configuration diagram of an image projection device according to the first embodiment AA sectional view of the image projection device shown in FIG. A diagram showing an airflow channel in an image projection device according to a first embodiment AA sectional view of the image projection device shown in FIG. Internal configuration diagram of an image projection device according to the second embodiment Internal configuration diagram of an image projection device according to the third embodiment Internal configuration diagram of an image projection device according to the fourth embodiment BB sectional view of the image projection device shown in FIG. A diagram showing an airflow channel in an image projection device according to a fourth embodiment

Hereinafter, one embodiment will be described with reference to the drawings.

[First embodiment]
(Configuration of image projection device 100)
FIG. 1 is an internal configuration diagram of an image projection apparatus 100 according to the first embodiment. FIG. 2 is a sectional view taken along line AA of the image projection device 100 shown in FIG.

As shown in FIGS. 1 and 2, the image projection apparatus 100 includes a light emitting heat generating section 101, a light receiving heat generating section 102, a container 110, a first heat dissipating section 103, a second heat dissipating section 104, a third heat dissipating section 105, an air intake and exhaust port. 106, and a housing 120. Note that among these components, the components attached to the container 110 (i.e., the light emitting heat generating section 101, the light receiving heat generating section 102, the first heat radiating section 103, and the second heat radiating section 104) are referred to as a "light source system". Configure.

The container 110 is provided inside the housing 120 and is a member that accommodates optical components such as the light emitting heat generating section 101 and the light receiving heat generating section 102. The container 110 has a rectangular parallelepiped shape (that is, a hexahedron), and has a first surface 110-1, a second surface 110-2, a third surface 110-3, and a fourth surface, all of which are rectangular in plan view. It has a surface 110-4, a fifth surface 110-5, and a sixth surface 110-6. The fourth surface 110-4 and the fifth surface 110-5 face each other. The first surface 110-1, the second surface 110-2, the third surface 110-3, and the sixth surface 110-6 are provided along the four sides of the fourth surface 110-4 and the fifth surface 110-5. and is perpendicular to the fourth surface 110-4 and the fifth surface 110-5. The first surface 110-1 and the sixth surface 110-6 face each other. The second surface 110-2 and the third surface 110-3 are opposed to each other. The container 110 is formed using, for example, a metal material with high thermal conductivity. Thereby, the container 110 can radiate the heat of the light emitting heat generating section 101 and the light receiving heat generating section 102 from the surface of the container 110, and can improve heat radiation efficiency. Note that the container 110 may have a dustproof function to prevent foreign matter from entering. In this case, the container 110 is not completely sealed, but is filled with a breathable dust-proof material such as a dust-proof sponge to fill the gaps between the plurality of parts that make up the container 110, thereby improving the dust-proofing effect and pressure fluctuation. It becomes possible to achieve both the effect of absorbing Moreover, each surface of the container may be configured using other components (for example, a heat receiving part, a heat radiating part, a light emitting heat generating part 101, etc.) in part.

Note that the container 110 is not limited to the rectangular parallelepiped shape, but may have other shapes as long as it has at least a first surface 110-1, a second surface 110-2, and a third surface 110-3. good. For example, the container 110 has a generally rectangular parallelepiped shape as a whole, but may have a shape in which a part of the rectangular parallelepiped shape is modified. For example, the container 110 has a pentagonal prism shape with one corner of a rectangular parallelepiped removed, and a portion (fourth surface 110-4, fifth surface 110-5, etc.) covers a light-receiving and heat-generating portion larger than the container 110. It may have a protruding shape or the like.

The light emitting heat generating section 101 is provided inside the container 110, and is a member that generates heat when emitting light. Examples of the light emitting heat generating section 101 include solid light sources such as a laser light source (LD) and an LED. Generally, a light source has an upper limit of allowable temperature, and it is necessary to cool the light source to below that temperature. Additionally, the higher the temperature, the lower the light utilization efficiency (the proportion of energy used as light output out of power consumption). Therefore, in order to establish a high-intensity light source system, it is desirable to cool the device so that the temperature is as low as possible, even if the temperature is below the upper limit of the allowable temperature. Therefore, in the first embodiment, as shown in FIG. 1, two light emitting heat generating parts 101 are provided on the first surface 110-1 of the container 110.

The light receiving heat generating section 102 is provided inside the container 110, and is a member that generates heat when exposed to light. Examples of the light-receiving and heat-generating section 102 include a phosphor, a color filter, and the like. The light receiving/heating section 102 is configured, for example, by providing a base member with functions such as light conversion and wavelength filtering. In this case, the base member may be a rotating body or a stationary member. Further, the base member may be a light transmitting member or a reflective member. In the first embodiment, as shown in FIGS. 1 and 2, one light receiving heat generating section 102 is provided on the second surface 110-2 of the container 110, and the other light receiving heat generating section 102 is provided in the container It is provided on the third surface 110-3 of 110. Note that a holding component or the like may be provided between the container 110 and the light receiving/heating section 102. However, it is preferable that the container 110 and the light receiving/heating section 102 are thermally connected to each other.

The first heat radiating section 103 is provided on the outside of the container 110 and is a member that mainly radiates the heat of the light emitting heat generating section 101 . The first heat radiating section 103 includes a heat receiving plate 103A, a heat transport component 103B, and a heat radiating section 103C. The heat receiving plate 103A receives heat from the light emitting heat generating section 101. The heat transport component 103B transfers the heat of the light emitting heat generating section 101 from the heat receiving plate 103A to the heat radiating section 103C. For example, a heat pipe is used as the heat transport component 103B. The heat radiating section 103C radiates the heat of the light emitting heat generating section 101. In the first embodiment, a fin-shaped heat sink is used as the heat dissipation section 103C in order to expand the heat transfer area, but the heat sink is not limited to this. Since the first heat radiating section 103 includes the heat transport component 103B, it is possible to lower the thermal resistance and increase the cooling efficiency compared to the case where a heat sink that only conducts heat is used. Note that the components of the first heat radiating section 103 are preferably connected with a member having a higher thermal conductivity than air (eg, thermally conductive grease, thermally conductive sheet, metal brazing, etc.). In the first embodiment, the image projection device 100 includes two first heat radiating sections 103 (103-1, 103-2). Further, in the first embodiment, as shown in FIG. 1, the heat receiving plate 103A of each of the two first heat radiating sections 103 is provided on the first surface 110-1 of the container 110.

The second heat radiating section 104 is provided on the outside of the container 110 and is a member that mainly radiates the heat of the light receiving/heating section 102 . In the first embodiment, a fin-shaped heat sink is used as the second heat radiating section 104 in order to expand the heat transfer area, but the present invention is not limited to this. Note that the fin shape may have at least irregularities, and includes plate fins, pin fins, corrugated fins, and the like. In the first embodiment, as shown in FIGS. 1 and 2, one second heat radiating part 104-1 is provided on the second surface 110-2 of the container 110, and the other second heat radiating part 104-1 is provided on the second surface 110-2 of the container 110. 104-2 is provided on the third surface 110-3 of the container 110. Accordingly, in the first embodiment, the light receiving heat generating section 102 is thermally connected to the second heat radiating section 104 via the second surface 110-2 of the container 110 and the third surface 110-3 of the container 110. Therefore, the heat of the light receiving/heating section 102 can be efficiently radiated from the second heat radiating section 104 through a heat path based only on heat conduction.

The third heat radiating section 105 is provided on the back side of the image forming panel 125 and is thermally connected to the image forming panel 125, and mainly radiates heat from the image forming panel 125. Examples of the third heat dissipation section 105 include a heat sink, a heat pipe module, liquid cooling, a Peltier element, and the like.

The intake/exhaust port 106 takes outside air into the inside of the casing 120 of the image projection device 100, transfers heat from the first heat radiating part 103 and the second heat radiating part 104 to the outside air, and transfers the high temperature outside air to the casing. By discharging the heat to the outside of the housing 120, it plays the role of dissipating the heat inside the housing 120. It is preferable that two or more intake/exhaust ports 106 are provided. In the first embodiment, as shown in FIG. A port 106-1 is provided. Further, each intake/exhaust port 106 is provided with an airflow generating device 106A.

(Light path in image projection device 100)
Here, with reference to FIG. 1, a light path in the image projection apparatus 100 according to the first embodiment will be described. Here, as an example, a case will be described in which a blue laser light source is used for the light emitting heat generating section 101 and a phosphor wheel is used for the light receiving heat generating section 102.

Laser light emitted from the light emitting heat generating section 101 provided on the first surface 110-1 of the container 110 passes through a plurality of optical components such as an optical lens 121 and a mirror 122, and is irradiated onto the light receiving heat generating section 102. As a result, fluorescence is generated by the light receiving/heating unit 102.

The image projection device 100 has two sets of optical paths extending from the light emitting heat generating unit 101 to the light receiving heat generating unit 102. Two fluorescent lights generated by the two sets of optical paths are combined by a combining prism 123, and a light tunnel 124 is formed. The light is emitted from the sixth surface 110-6 of the container 110 into the space 108 provided outside the container 110.

The combined fluorescent light emitted into the space 108 is incident on an image forming panel 125 provided in the space 108. As a result, an image is formed by the image forming panel 125, and the image is projected from the projection system 126.

(Airflow channel in image projection device 100)
FIG. 3 is a diagram showing an airflow path in the image projection device 100 according to the first embodiment. In the image projection device 100 according to the first embodiment, for example, when air is taken in through the intake/exhaust port 106-1 and exhausted through the intake/exhaust port 106-2, the air flow path in the image projection device 100 is as shown in FIG. , and has airflow channels 1 and 2.

In the airflow channel 1, the air taken in by the airflow generation device 106A from the intake/exhaust port 106-1 cools the electronic board 109, the projection system 126, the second heat radiation section 104-1, and the first heat radiation section 103-1 in this order. The air is then exhausted from the air intake/exhaust port 106-2 by the airflow generator 106A.

In the airflow channel 2, the air taken in by the airflow generation device 106A from the intake/exhaust port 106-1 is transmitted to the electronic board 109, the third heat radiating section 105, the second heat radiating section 104-2, and the first heat radiating section 103-2. The air is sequentially cooled and exhausted from the intake and exhaust ports 106-2 by the airflow generator 106A.

Note that the image projection apparatus 100 may be configured to take in air from the intake/exhaust port 106-2 and exhaust air from the intake/exhaust port 106-1. In this case, the airflow path in the image projection device 100 is in the opposite direction to the airflow path shown in FIG.

(effect)
As shown in FIG. 1, the image projection device 100 according to the first embodiment includes a light emitting heat generating section 101 and a first heat dissipating section 103 (heat receiving plate 103A) provided on the first surface 110-1 of the container 110. ing. Thereby, the image projection apparatus 100 according to the first embodiment transfers the heat of the light emitting heat generating section 101 to the first surface 110-1 of the container 110 and the first heat radiating section 103 (heat receiving plate 103A, heat transport component 103B). Through this, heat can be effectively radiated from the first heat radiating section 103 (heat radiating section 103C).

The heat transport component 103B for transporting heat to the first heat radiating part 103 is not bent when viewed from above as shown in FIG. When using the heat transport component 103B, it is possible to ensure a large maximum amount of heat transport. Therefore, in the image projection device 100 according to the first embodiment, the allowable upper limit of the amount of heat generated by the light emitting heat generating section 101 can be increased, and the amount of light emitted by the light emitting heat generating section 101 can be increased. It is possible to realize an output light source device.

Further, in the image projection device 100 according to the first embodiment, a first heat radiating section 103-1 and a second heat radiating section 104-1 are provided along the second surface 110-2 of the container 110. A first heat radiating section 103-2 and a second heat radiating section 104-2 are provided along the third surface 110-3.

Note that the fact that the first heat radiating section 103-1 and the second heat radiating section 104-1 are along the second surface 110-2 of the container 110 means that, specifically, the second surface 110-2 of the container 110 and the casing This means that the first heat radiating section 103-1 and the second heat radiating section 104-1 are arranged in the space between the eighth surface 120-8 of the heat sink 120 and the eighth surface 120-8.

Similarly, the fact that the first heat radiating section 103-1 and the second heat radiating section 104-1 are along the third surface 110-3 of the container 110 means that the third surface 110-3 of the container 110 and the casing are aligned. This means that the first heat radiating section 103-1 and the second heat radiating section 104-1 are arranged in the space between the body 120 and the ninth surface 120-9.

As a result, the image projection device 100 according to the first embodiment can cause the first heat radiating section 103 and the second heat radiating section 104 to be heated by the air flowing without stagnation in the housing 120 (the airflow channels 1 and 2 shown in FIG. 3). Can be effectively cooled.

In this manner, the image projection apparatus 100 according to the first embodiment can improve the cooling efficiency of the second heat radiating section 104, and therefore can further suppress the temperature rise of the light receiving and heat generating section 102. For example, when the light-receiving and heat-generating section 102 is a phosphor, the lower the phosphor temperature, the higher the light conversion efficiency, so even with a constant amount of excitation light, more fluorescence can be generated, and the light source has a bright light output. It is possible to realize the device.

Further, in the image projection apparatus 100 according to the first embodiment, a part or all of the first heat radiating part 103 and a part or all of the second heat radiating part 104 are arranged in the same airflow channel. . Thereby, the image projection apparatus 100 according to the first embodiment can intensively radiate heat from the first heat radiating section 103 and the second heat radiating section 104 by the cooling air passing through the inside of the housing 120, and the first heat radiating section The heat radiation efficiency of the heat radiation section 103 and the second heat radiation section 104 can be improved.

Further, in the image projection device 100 according to the first embodiment, the light emitting heat generating section 101 is attached to the heat receiving plate 103A, and the heat receiving plate 103A and the heat dissipating section 103C are thermally connected by the heat transport component 103B. has been done. As a result, the image projection device 100 according to the first embodiment can place the heat dissipating section 103C in a place where it is easily exposed to airflow, and can improve the cooling performance of the light emitting heat generating section 101.

Further, in the image projection device 100 according to the first embodiment, the light receiving heat generating section 102 is attached to the inner surface of the container 110, and the second heat radiating section 104 is attached to the outer surface of the container 110 and the back side of the light receiving heat generating section 102. is attached to. As a result, the image projection apparatus 100 according to the first embodiment can conduct the heat of the light receiving heat generating section 102 to the second heat radiating section 104 via the container 110. Since the thermal resistance between the light receiving and heat generating section 102 can be reduced, the cooling performance of the light receiving heat generating section 102 can be improved.

(Spatial configuration of image projection device 100)
FIG. 4 is a sectional view taken along line AA of the image projection device 100 shown in FIG.

As shown in FIG. 4, the image projection device 100 according to the first embodiment has a first space A1 between the eighth surface 120-8 of the housing 120 and the second surface 110-2 of the container 110. have A second heat radiation section 104-1 is arranged in the first space A1.

Further, as shown in FIG. 4, the image projection device 100 according to the first embodiment has a first space between the ninth surface 120-9 of the housing 120 and the third surface 110-3 of the container 110. It has A2. A second heat radiating section 104-2 is arranged in the first space A2.

Further, as shown in FIG. 4, the image projection device 100 according to the first embodiment has a second space between the tenth surface 120-10 of the housing 120 and the fourth surface 110-4 of the container 110. It has B1.

Further, as shown in FIG. 4, the image projection device 100 according to the first embodiment has a second space between the eleventh surface 120-11 of the housing 120 and the fifth surface 110-5 of the container 110. It has B2.

Note that the second heat radiating section 104 is not arranged in the second space B1 and the second space B2.

The image projection device 100 according to the first embodiment provides the first heat radiating section 103 and the second heat radiating section 104 in the first spaces A1 and A2 between the outer surface of the container 110 and the inner surface of the housing 120. The spaces A1 and A2 function as ducts, and cooling air can be actively applied to the first heat radiating part 103 and the second heat radiating part 104 without providing a separate duct, thereby increasing heat radiation efficiency.

Here, in the image projection device 100 according to the first embodiment, as shown in FIG. It is larger than the cross-sectional area of the two spaces B1 and B2. As a result, in the image projection device 100 according to the first embodiment, the air current flows easily in the first spaces A1 and A2, so that the first heat radiating part 103 and the second heat radiating part 104 arranged in the first spaces A1 and A2 Cooling air can be actively applied to the area, increasing heat dissipation efficiency.

[Second embodiment]
FIG. 5 is an internal configuration diagram of an image projection device 100-2 according to the second embodiment. Hereinafter, regarding the image projection apparatus 100-2 according to the second embodiment, changes from the image projection apparatus 100 according to the first embodiment will be described.

In the image projection device 100-2 according to the second embodiment, the light receiving/heating unit 102 is attached to a component provided inside the container 110. Therefore, in the image projecting device 100-2 according to the second embodiment, the heat of the light receiving heat generating unit 102 is transferred to the air inside the container 110 at a high rate, and the heat is transferred from the air inside the container 110 to the air outside the container 110. It is preferable to increase heat transfer efficiency.

Therefore, the image projection apparatus 100-2 according to the second embodiment has a configuration in which heat of the air within the container 110 is transferred to the second heat radiating section 104 using the heat transport component 111. Specifically, the heat receiving section 112 inside the container 110 receives the heat of the air inside the container 110. Then, the heat transport component 111 transfers the heat received by the heat receiving section 112 to the second heat radiating section 104. Furthermore, the second heat radiating section 104 radiates the transferred heat to the air outside the container 110.

It is preferable that the heat transport component 111 uses a fluid, such as a heat pipe, for example.

Thereby, the image projection device 100-2 according to the second embodiment can reduce the thermal resistance from the air in the container 110 to the second heat radiating section 104, and can improve the cooling performance of the light receiving heat generating section 102. can.

Note that the image projection device 100-2 according to the second embodiment may include an airflow generating device inside the container 110. Thereby, the image projection device 100-2 according to the second embodiment can increase the heat transfer coefficient from the air inside the container 110 to the heat receiving section 112.

Note that in the image projection device 100-2 according to the second embodiment, the heat transport component 111 of the second heat radiating section 104 is attached to the sixth surface 110-6 of the container 110, but the second heat radiating section 104-1 are arranged along the second surface 110-2 of the container 110, and the second heat radiating section 104-2 is arranged along the third surface 110-3 of the container 110. Therefore, in the image projection device 100-2 according to the second embodiment, airflow can pass through the second heat radiating section 104 compared to the case where the second heat radiating section 104 is arranged along the sixth surface 110-6 of the container 110. This makes it possible to improve the heat dissipation ability of the second heat dissipation section 104.

Further, in the image projecting device 100-2 according to the second embodiment, the light receiving/heating unit 102 may be a rotating body. In this case, in the image projection apparatus 100-2 according to the second embodiment, the heat transfer rate from the light receiving heat generating section 102 to the air inside the container 110 increases, and the cooling efficiency of the light receiving heat generating section 102 can be improved.

[Third embodiment]
FIG. 6 is an internal configuration diagram of an image projection device 100-3 according to the third embodiment. Hereinafter, regarding the image projection apparatus 100-3 according to the third embodiment, changes from the image projection apparatus 100 according to the first embodiment will be described.

In the image projection device 100-3 according to the third embodiment, the second heat radiation section 104 is formed integrally with the container 110. That is, in the image projection device 100-3 according to the third embodiment, the convex portion of the container 110 functions as the second heat radiating portion 104. As a result, the image projection device 100-3 according to the third embodiment can reduce the contact thermal resistance between the container 110 and the second heat radiating section 104, and therefore can increase the cooling efficiency of the light receiving heat generating section 102. . Furthermore, since the image projection device 100-3 according to the third embodiment has fewer parts, it is possible to realize cost reduction.

In the image projection device 100-3 according to the third embodiment, a convex portion functioning as the second heat radiating portion 104 is also provided on the sixth surface 110-6 of the container 110. Thereby, the image projection apparatus 100-3 according to the third embodiment can radiate the heat of the light receiving/heating section 102 also from the sixth surface 110-6 of the container 110.

Further, in the image projection device 100-3 according to the third embodiment, the airflow generating device 106A is not provided at the intake/exhaust port 106-1. In this way, the airflow generator 106A may be provided only at either one of the intake and exhaust ports 106-1 and 106-2.

[Fourth embodiment]
FIG. 7 is an internal configuration diagram of an image projection device 100-4 according to the fourth embodiment. FIG. 8 is a BB cross-sectional view of the image projection device 100-4 shown in FIG. FIG. 9 is a diagram showing an air flow path in an image projection device 100-4 according to the fourth embodiment. Hereinafter, regarding the image projection apparatus 100-4 according to the fourth embodiment, changes from the image projection apparatus 100 according to the first embodiment will be described.

As shown in FIG. 7, in the image projection device 100-4 according to the fourth embodiment, a heat radiating section 103C is additionally provided on the opposite side of the heat receiving plate 103A to which the light emitting heat generating section 101 is attached.

As a result, since the image projection device 100-4 according to the fourth embodiment has the additional heat dissipating section 103C near the light emitting heat generating section 101, the thermal resistance between the light emitting heat generating section 101 and the additional heat dissipating section 103C is reduced. It can be made smaller, and therefore, the cooling performance of the light emitting heat generating section 101 can be improved.

Further, in the image projection device 100-4 according to the fourth embodiment, the heat of the light emitting heat generating section 101 can be radiated from the three heat radiating sections 103C, so that the heat radiating area increases and the cooling capacity of the light emitting heat generating section 101 can be increased. .

Furthermore, as shown in FIG. 8, the image projection device 100-4 according to the fourth embodiment has the 11th An intake/exhaust port 106-3 is additionally provided on the surface 120-11.

As a result, the image projection device 100-4 according to the fourth embodiment generates an airflow to the additionally provided heat dissipation section 103C, as shown by the arrow in FIG. 9, and increases the heat dissipation ability of the heat dissipation section 103C. I can do it.

The installation location of the intake/exhaust port 106-3 is not limited to the eleventh surface 120-11 of the housing 120.

For example, in the case where the additionally provided heat dissipation section 103C is a plate fin type heat sink, if the surface of the plate fin is arranged along the eighth surface 120-8 and the ninth surface 120-9 of the housing 120, The intake/exhaust port 106-3 may be provided on one or both of the tenth surface 120-10 and the eleventh surface 120-11 of the housing 120 so that airflow can easily flow between the fins.

For example, if the plate fin surfaces are arranged along the tenth surface 120-10 and the eleventh surface 120-11 of the casing 120, the intake and exhaust ports 106-1 may be arranged so that the airflow can easily flow between the fins. may be provided on one or both of the eighth surface 120-8 and the ninth surface 120-9 of the housing 120.

However, the additionally provided heat dissipating section 103C only needs to have at least irregularities, and includes plate fins, pin fins, corrugated fins, and the like.

Note that in the image projection device 100-4 according to the fourth embodiment, since the two light emitting heat generating parts 101 are attached to one heat receiving plate 103A, it is possible to reduce the temperature difference between the two light emitting heat generating parts 101. can.

For example, when the light emitting heat generating section 101 is a laser light source, since the laser light source has a characteristic that the light utilization efficiency changes depending on the temperature, the temperature difference between the two light emitting heat generating sections 101 becomes small, so that the two light emitting heat generating sections 101 are used as a laser light source. The difference in the amount of light emitted by the portion 101 becomes smaller. Therefore, the image projection device 100-4 according to the fourth embodiment can project a more uniform image.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments, and various modifications and variations can be made within the scope of the gist of the present invention as described in the claims. Changes are possible.

100, 100-2, 100-3, 100-4 Image projection device 101 Light emitting heat generating section 102 Light receiving heat generating section 103, 103-1, 103-2 First heat radiating section 103A Heat receiving plate 103B Heat transport component 103C Heat radiating section 104, 104 -1,104-2 Second heat dissipation section 105 Third heat dissipation section 106,106-1,106-2,106-3 Intake/exhaust port 106A Airflow generator 108 Space 109,109-2 Electronic board 110 Container 110-1 No. 1st side 110-2 2nd side 110-3 3rd side 110-4 4th side 110-5 5th side 110-6 6th side 111 Heat transport parts 112 Heat receiving part 120 Housing 120-7 7th side 120- 8 8th surface 120-9 9th surface 120-10 10th surface 120-11 11th surface 120-12 12th surface 121 Optical lens 122 Mirror 123 Synthesizing prism 124 Light tunnel 125 Image forming panel 126 Projection system A1, A2 1 space B1, B2 2nd space

Patent No. 6783545

Claims (13)

a plurality of light emitting heat generating parts that generate heat when emitting light;
A light-receiving heat-generating part that generates heat when exposed to light;
a first heat radiating section that radiates heat from the light emitting heat generating section;
a second heat radiating section that radiates heat from the light receiving heat generating section;
a container that accommodates the light emitting heat generating section and the light receiving heat generating section therein;
The container is
having a first surface and a sixth surface facing each other, and a second surface and a third surface facing each other,
Two or more of the light emitting heat generating parts are provided on the first surface of the container,
The first heat radiation part is provided on the first surface of the container,
The second heat radiation section is provided along at least one of the second surface and the third surface of the container. Light source system. comprising a casing that accommodates the container,
The container has a fourth surface and a fifth surface facing each other,
The casing is
between the eighth surface of the container, which is opposite to the second surface, and the second surface of the container; and between the ninth surface, which is opposite to the third surface of the container, and the third surface of the container. a first space provided in each of the spaces;
between a 10th surface of the container opposite to the 4th surface and the 4th surface of the container; and between an 11th surface of the container opposite to the 5th surface and the 5th surface of the container; and a second space provided in each of the
The second heat radiation part is provided in the first space,
The light source system according to claim 1, wherein the cross-sectional area of the first space is larger than the cross-sectional area of the second space when viewed in plan from the sixth surface side of the container. The light source system according to claim 1 or 2, wherein a part or all of the first heat radiation part and a part or all of the second heat radiation part are arranged in the same airflow channel. The first heat dissipation part is
A heat receiving plate,
A heat dissipation section;
a heat transport component that thermally connects the heat receiving plate and the heat radiating section;
The light emitting heat generating part is
The light source system according to any one of claims 1 to 3, wherein the light source system is attached to the heat receiving plate. The light receiving heat generating section is attached to the inner surface of the container,
The light source system according to any one of claims 1 to 4, wherein the second heat radiating section is attached to the outer surface of the container and to the back side of the light receiving and heat generating section. The light source system according to any one of claims 1 to 5, wherein the light receiving heat generating section is a rotating body. a heat receiving part provided inside the container;
The light source system according to any one of claims 1 to 6, further comprising: a heat transport component that thermally connects the heat receiving section and the second heat radiating section. The light source system according to any one of claims 1 to 7, wherein the second heat radiation part is a convex part provided on the outer surface of the container. The light source system according to any one of claims 1 to 8, wherein the second heat radiation section is further provided along the sixth surface of the container. Equipped with a heat receiving plate,
The light emitting heat generating part is attached to one surface of the heat receiving plate,
The light source system according to any one of claims 1 to 9, further comprising a heat radiation section attached to the other surface of the heat receiving plate. The light source system according to any one of claims 1 to 10, wherein two or more of the light emitting heat generating parts are attached to one heat receiving plate. The light receiving heat generating section is
The light source system according to any one of claims 1 to 11, wherein the light source system is arranged along the second surface and the third surface of the container. An image projection device comprising the light source system according to any one of claims 1 to 12.

Images