Light source system and image projection device

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

Technical Field

[0001] The present invention relates to a light source system and an image projection device.

Background Art

[0002] In Patent Document 1 below, for the purpose of outputting high-intensity fluorescence using a laser light source and a phosphor, at least two phosphor substrates are arranged, which include a laser light source that emits laser light and a phosphor that is excited by the laser light to emit fluorescence, and an optical element that spatially synthesizes the fluorescence emitted from each of the at least two phosphor substrates is disclosed.

Summary of the Invention

Problems to be Solved by the Invention

[0003] However, the technology of Patent Document 1 cannot efficiently cool the heat-generating part in order to improve the efficiency of the optical element.

[0004] In order to solve the above-described problems of the prior art, an object of the present invention is to enable efficient cooling of the heat-generating part in order to improve the efficiency of the optical element.

Means for Solving the Problems

[0005] In order to solve the above-described problems, a light source system according to an 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 light hits it, a first heat radiating part that radiates the heat of the light-emitting heat-generating parts, a second heat radiating part that radiates the heat of the light-receiving heat-generating part, and a container that houses the light-emitting heat-generating parts and the light-receiving heat-generating part inside. The container has a first surface and a sixth surface that face each other, and a second surface and a third surface that face each other. Two or more light-emitting heat-generating parts are provided on the first surface of the container. The first heat radiating part is provided on the first surface of the container. The second heat radiating part is provided along at least one of the second surface and the third surface of the container.

Effects of the Invention

[0006] According to an image processing apparatus of one embodiment, the heat-generating part can be efficiently cooled in order to improve the efficiency of the optical element. [Brief explanation of the drawing]

[0007] [Figure 1] Internal configuration diagram of the image projection device according to the first embodiment [Figure 2] Cross-sectional view AA of the image projection device shown in Figure 1. [Figure 3] A diagram showing the airflow path in the image projection device according to the first embodiment. [Figure 4] Figure 1 shows a cross-sectional view of the image projection device (AA). [Figure 5] Internal configuration diagram of the image projection device according to the second embodiment [Figure 6] Internal configuration diagram of the image projection device according to the third embodiment [Figure 7] Internal configuration diagram of the image projection device according to the fourth embodiment [Figure 8] Figure 7 shows a cross-sectional view of the BB (branch) of the image projection device. [Figure 9] A diagram showing the airflow path in the image projection device according to the fourth embodiment. [Modes for carrying out the invention]

[0008] An embodiment will be described below with reference to the drawings.

[0009] [First Embodiment] (Configuration of the image projection device 100) Figure 1 is an internal configuration diagram of the image projection device 100 according to the first embodiment. Figure 2 is a cross-sectional view AA of the image projection device 100 shown in Figure 1.

[0010] As shown in Figures 1 and 2, the image projection device 100 comprises a light-emitting heat-generating unit 101, a light-receiving heat-generating unit 102, a container 110, a first heat-dissipating unit 103, a second heat-dissipating unit 104, a third heat-dissipating unit 105, an intake / exhaust port 106, and a housing 120. Of these components, the components attached to the container 110 (i.e., the light-emitting heat-generating unit 101, the light-receiving heat-generating unit 102, the first heat-dissipating unit 103, and the second heat-dissipating unit 104) constitute a "light source system".

[0011] The container 110 is located inside the housing 120 and is a component that houses 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 (i.e., a hexahedron) and is composed of four rectangular faces, the first 110-1, second 110-2, third 110-3, fourth 110-4, fifth 110-5, and sixth 110-6, which are all rectangular in plan view. The fourth 110-4 and fifth 110-5 face 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 face each other. The container 110 is formed using, for example, a metal material with high thermal conductivity. This allows the container 110 to dissipate heat from the light-emitting heat-generating part 101 and the light-receiving heat-generating part 102 from the surface of the container 110, thereby increasing heat dissipation efficiency. The container 110 may also be equipped with a dustproof function to prevent the ingress of foreign matter. In this case, the container 110 is not completely sealed, but rather a breathable dustproof material such as a dustproof sponge is used to fill the gaps between the multiple components constituting the container 110, thereby achieving both a dustproof effect and an effect of absorbing pressure fluctuations. Furthermore, each surface of the container may be constructed using other components in part (for example, a heat-receiving part, a heat-dissipating part, a light-emitting heat-generating part 101, etc.).

[0012] Furthermore, the container 110 is not limited to a rectangular parallelepiped shape, and may have other shapes as long as it has at least a first face 110-1, a second face 110-2, and a third face 110-3. For example, the container 110 is generally a rectangular parallelepiped shape, but may have a modified shape in part. For example, the container 110 may be a pentagonal prism shape with one corner of the rectangular parallelepiped removed, or a shape in which a part (such as a fourth face 110-4 or a fifth face 110-5) protrudes to cover a light-receiving and heating element larger than the container 110.

[0013] The light-emitting and heat-generating section 101 is provided inside the container 110 and is a component that generates heat when emitting light. Examples of light-emitting and heat-generating sections 101 include solid-state light sources such as laser light sources (LDs) and LEDs. Generally, light sources have an upper limit of permissible temperature, and it is necessary to cool them to below that temperature. Furthermore, the higher the temperature, the lower the light utilization efficiency (the proportion of energy used as light output out of power consumption) becomes. Therefore, in order to establish a high-brightness light source system, it is desirable to cool the temperature as low as possible, even if it is below the upper limit of permissible temperature. Accordingly, in the first embodiment, as shown in Figure 1, two light-emitting and heat-generating sections 101 are provided on the first surface 110-1 of the container 110.

[0014] The light-receiving heat-generating section 102 is provided inside the container 110 and is a component that generates heat when exposed to light. Examples of the light-receiving heat-generating section 102 include a phosphor and a color filter. The light-receiving heat-generating 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 body. The base member may also be a light-transmitting member or a reflective member. In the first embodiment, as shown in Figures 1 and 2, one light-receiving heat-generating section 102 is provided on the second surface 110-2 of the container 110, and another light-receiving heat-generating section 102 is provided on the third surface 110-3 of the container 110. A retaining component or the like may be provided between the container 110 and the light-receiving heat-generating section 102. However, it is preferable that the container 110 and the light-receiving heat-generating section 102 are thermally connected to each other.

[0015] The first heat dissipation section 103 is provided on the outside of the container 110 and is a component that mainly dissipates heat from the light-emitting heat-generating section 101. The first heat dissipation section 103 has a heat receiving plate 103A, a heat transport component 103B, and a heat dissipation 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 from the light-emitting heat-generating section 101 from the heat receiving plate 103A to the heat dissipation section 103C. For example, a heat pipe can be used as the heat transport component 103B. The heat dissipation section 103C dissipates heat from the light-emitting heat-generating section 101. In the first embodiment, a fin-shaped heat sink is used as the heat dissipation section 103C to increase the heat transfer area, but it is not limited to this. The first heat dissipation section 103 has a heat transport component 103B, which allows for a reduction in thermal resistance compared to using a heat sink that only conducts heat, thereby improving cooling efficiency. Preferably, the components of the first heat dissipation section 103 are connected with a material that has a higher thermal conductivity than air (for example, thermal conductive grease, thermal conductive sheet, metal brazing, etc.). In the first embodiment, the image projection device 100 includes two first heat dissipation sections 103 (103-1, 103-2). Also, in the first embodiment, as shown in Figure 1, the heat receiving plates 103A of each of the two first heat dissipation sections 103 are provided on the first surface 110-1 of the container 110.

[0016] The second heat radiating part 104 is provided outside the container 110 and is a member mainly for radiating the heat of the light receiving and heat generating part 102. In the first embodiment, as the second heat radiating part 104, in order to expand the heat transfer area, a fin-shaped heat sink is used, but it is not limited to this. The fin shape only needs to have at least irregularities and includes plate fins, pin fins, corrugated fins, etc. 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 104-2 is provided on the third surface 110-3 of the container 110. Thereby, in the first embodiment, the light receiving and heat generating part 102 can be thermally connected to the second heat radiating part 104 through 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 and heat generating part 102 can be efficiently radiated from the second heat radiating part 104 through a heat path of only heat conduction.

[0017] The third heat radiating part 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 the heat of the image forming panel 125. Examples of the third heat radiating part 105 include a heat sink, a heat pipe module, liquid cooling, a Peltier element, etc.

[0018] The intake and exhaust port 106 takes in outside air inside the housing 120 of the image projection apparatus 100, transfers the heat from the first heat radiating part 103 and the second heat radiating part 104 to the outside air, and discharges the heated outside air to the outside of the housing 120, thereby playing a role of radiating the heat inside the housing 120. It is preferable that the intake and exhaust port 106 is provided in two or more places. In the first embodiment, as shown in FIG. 1, an intake and exhaust port 106-2 is provided on the seventh surface 120-7 of the housing 120, and an intake and exhaust port 106-1 is provided on the twelfth surface 120-12 of the housing 120. Also, an air flow generating device 106A is provided at each intake and exhaust port 106.

[0019] (Optical path in the image projection apparatus 100) Here, referring to FIG. 1, the optical path in the image projection apparatus 100 according to the first embodiment will be described. Here, as an example, the case where a blue laser light source is used for the light-emitting and heat-generating unit 101 and a phosphor wheel is used for the light-receiving and heat-generating unit 102 will be described.

[0020] The laser light emitted from the light-emitting and heat-generating unit 101 provided on the first surface 110-1 of the container 110 passes through a plurality of optical components such as the optical lens 121 and the mirror 122, and is irradiated onto the light-receiving and heat-generating unit 102, whereby fluorescence is generated by the light-receiving and heat-generating unit 102.

[0021] The image projection apparatus 100 has two sets of optical paths from the light-emitting and heat-generating unit 101 to the light-receiving and heat-generating unit 102. Two fluorescences generated by the two sets of optical paths are synthesized by the synthesis prism 123, pass through the light tunnel 124, and are emitted from the sixth surface 110-6 of the container 110 to the space 108 provided outside the container 110.

[0022] The synthesized light of the fluorescence emitted into the space 108 is incident on the image forming panel 125 provided in the space 108. Thereby, an image is formed by the image forming panel 125, and the image is projected from the projection system 126.

[0023] (Airflow path in the image projection apparatus 100) FIG. 3 is a diagram showing the airflow path in the image projection apparatus 100 according to the first embodiment. In the image projection apparatus 100 according to the first embodiment, for example, when air is inhaled from the air intake and exhaust port 106-1 and exhausted from the air intake and exhaust port 106-2, the airflow path in the image projection apparatus 100 has airflow paths 1 and 2 as shown in FIG. 3.

[0024] In the airflow path 1, the air inhaled from the air intake and exhaust port 106-1 by the airflow generator 106A cools the electronic substrate 109, the projection system 126, the second heat radiating unit 104-1, and the first heat radiating unit 103-1 in this order, and is exhausted from the air intake and exhaust port 106-2 by the airflow generator 106A.

[0025] In the airflow path 2, air drawn in by the airflow generator 106A from the intake / exhaust port 106-1 cools the electronic circuit board 109, the third heat dissipation section 105, the second heat dissipation section 104-2, and the first heat dissipation section 103-2 in that order, and is then exhausted from the intake / exhaust port 106-2 by the airflow generator 106A.

[0026] The image projection device 100 may also be configured to draw 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 will be in the opposite direction to the airflow path shown in Figure 3.

[0027] (effect) As shown in Figure 1, the image projection device 100 according to the first embodiment is provided with a light-emitting and heat-generating section 101 and a first heat-dissipating section 103 (heat receiving plate 103A) on the first surface 110-1 of the container 110. As a result, the image projection device 100 according to the first embodiment can effectively dissipate heat from the light-emitting and heat-generating section 101 through the first surface 110-1 of the container 110 and the first heat-dissipating section 103 (heat receiving plate 103A, heat transport component 103B) to the first heat-dissipating section 103 (heat-dissipating section 103C).

[0028] As shown in Figure 1, the heat transport component 103B for transporting heat to the first heat dissipation section 103 has no bends when viewed from above. Therefore, when using a heat transport component 103B that, for example, is a heat pipe, where the maximum heat transport capacity decreases as the number of bends increases, it is possible to ensure a large maximum heat transport capacity. For this reason, the image projection device 100 according to the first embodiment can increase the allowable upper limit of the heat generated by the light-emitting heat-generating section 101, and can increase the amount of light emitted by the light-emitting heat-generating section 101, thereby realizing a light source device with a brighter light output.

[0029] Furthermore, in the image projection device 100 according to the first embodiment, a first heat dissipation section 103-1 and a second heat dissipation section 104-1 are provided along the second surface 110-2 of the container 110, and a first heat dissipation section 103-2 and a second heat dissipation section 104-2 are provided along the third surface 110-3 of the container 110.

[0030] Furthermore, the fact that the first heat dissipation section 103-1 and the second heat dissipation section 104-1 are aligned with the second surface 110-2 of the container 110 means, specifically, that the first heat dissipation section 103-1 and the second heat dissipation section 104-1 are positioned in the space between the second surface 110-2 of the container 110 and the eighth surface 120-8 of the housing 120.

[0031] Similarly, the fact that the first heat dissipation section 103-1 and the second heat dissipation section 104-1 are aligned with the third surface 110-3 of the container 110 means, specifically, that the first heat dissipation section 103-1 and the second heat dissipation section 104-1 are positioned in the space between the third surface 110-3 of the container 110 and the ninth surface 120-9 of the housing 120.

[0032] As a result, the image projection device 100 according to the first embodiment can effectively cool the first heat dissipation unit 103 and the second heat dissipation unit 104 with air that flows without stagnation inside the housing 120 (airflow channels 1 and 2 shown in Figure 3).

[0033] Thus, the image projection device 100 according to the first embodiment can improve the cooling efficiency of the second heat dissipation unit 104, thereby further suppressing the temperature rise of the light-receiving heat-generating unit 102. For example, if the light-receiving heat-generating unit 102 is a phosphor, the lower the phosphor temperature, the higher the light conversion efficiency. Therefore, even with a constant excitation light amount, more fluorescence can be generated, making it possible to realize a light source device with bright light output.

[0034] Furthermore, in the image projection device 100 according to the first embodiment, part or all of the first heat dissipation section 103 and part or all of the second heat dissipation section 104 are arranged in the same airflow path. As a result, the image projection device 100 according to the first embodiment can concentrate heat dissipation from the first heat dissipation section 103 and the second heat dissipation section 104 by the cooling air passing through the housing 120, thereby increasing the heat dissipation efficiency of the first heat dissipation section 103 and the second heat dissipation section 104.

[0035] Furthermore, in the image projection device 100 according to the first embodiment, the light-emitting heat-generating unit 101 is attached to the heat receiving plate 103A, and the heat receiving plate 103A and the heat dissipation unit 103C are thermally connected by a heat transport component 103B. As a result, in the image projection device 100 according to the first embodiment, the heat dissipation unit 103C can be placed in a location where it is easily exposed to airflow, thereby improving the cooling performance of the light-emitting heat-generating unit 101.

[0036] Furthermore, in the image projection device 100 according to the first embodiment, the light-receiving heat-generating unit 102 is attached to the inner surface of the container 110, and the second heat-dissipating unit 104 is attached to the outer surface of the container 110 and to the back side of the light-receiving heat-generating unit 102. As a result, the image projection device 100 according to the first embodiment can conduct heat from the light-receiving heat-generating unit 102 to the second heat-dissipating unit 104 via the container 110, and the thermal resistance between the light-receiving heat-generating unit 102 and the second heat-dissipating unit 104 can be reduced, thereby improving the cooling performance of the light-receiving heat-generating unit 102.

[0037] (Spatial configuration of the image projection device 100) Figure 4 is a cross-sectional view AA of the image projection device 100 shown in Figure 1.

[0038] As shown in Figure 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. The second heat dissipation unit 104-1 is located in the first space A1.

[0039] Furthermore, as shown in Figure 4, the image projection device 100 according to the first embodiment has a first space A2 between the ninth surface 120-9 of the housing 120 and the third surface 110-3 of the container 110. The second heat dissipation unit 104-2 is located in the first space A2.

[0040] Furthermore, as shown in Figure 4, the image projection device 100 according to the first embodiment has a second space B1 between the tenth surface 120-10 of the housing 120 and the fourth surface 110-4 of the container 110.

[0041] Furthermore, as shown in Figure 4, the image projection device 100 according to the first embodiment has a second space B2 between the 11th surface 120-11 of the housing 120 and the 5th surface 110-5 of the container 110.

[0042] Furthermore, the second heat dissipation unit 104 is not located in the second space B1 and the second space B2.

[0043] In the image projection device 100 according to the first embodiment, by providing a first heat dissipation section 103 and a second heat dissipation 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 first spaces A1 and A2 function as ducts, and cooling air can be actively directed to the first heat dissipation section 103 and the second heat dissipation section 104 without the need to provide separate ducts, thereby improving heat dissipation efficiency.

[0044] Here, as shown in Figure 4, in the image projection device 100 according to the first embodiment, when viewed from above from the sixth surface 110-6 side of the container 110, the cross-sectional area of ​​the first space A1, A2 is larger than the cross-sectional area of ​​the second space B1, B2. As a result, the image projection device 100 according to the first embodiment allows air to flow more easily into the first space A1, A2, so that cooling air can be actively directed onto the first heat dissipation unit 103 and the second heat dissipation unit 104 located in the first space A1, A2, thereby increasing the heat dissipation efficiency.

[0045] [Second Embodiment] Figure 5 is an internal configuration diagram of the image projection device 100-2 according to the second embodiment. The following describes the changes from the image projection device 100 according to the first embodiment regarding the image projection device 100-2 according to the second embodiment.

[0046] In the image projection device 100-2 according to the second embodiment, the light-receiving heat-generating unit 102 is attached to a component provided inside the container 110. Therefore, in the image projection device 100-2 according to the second embodiment, a large proportion of the heat from the light-receiving heat-generating unit 102 is transferred to the air inside the container 110, and it is preferable to increase the heat transfer efficiency from the air inside the container 110 to the air outside the container 110.

[0047] Therefore, the image projection device 100-2 according to the second embodiment has a configuration in which a heat transport component 111 is used to transfer heat from the air inside the container 110 to the second heat dissipation unit 104. Specifically, a heat receiving unit 112 inside the container 110 receives heat from the air inside the container 110. Then, the heat transport component 111 transfers the heat received by the heat receiving unit 112 to the second heat dissipation unit 104. Furthermore, the second heat dissipation unit 104 dissipates the transferred heat to the air outside the container 110.

[0048] The heat transport component 111 is preferably one that uses a fluid, such as a heat pipe.

[0049] As a result, the image projection device 100-2 according to the second embodiment can reduce the thermal resistance from the air inside the container 110 to the second heat dissipation unit 104, thereby improving the cooling performance of the light-receiving heat-generating unit 102.

[0050] In addition, the image projection device 100-2 according to the second embodiment may be provided with an airflow generator inside the container 110. This allows the image projection device 100-2 according to the second embodiment to increase the heat transfer coefficient from the air inside the container 110 to the heat receiving section 112.

[0051] In the image projection device 100-2 according to the second embodiment, the heat transport component 111 of the second heat dissipation unit 104 is attached to the sixth surface 110-6 of the container 110, but the second heat dissipation unit 104-1 is arranged along the second surface 110-2 of the container 110, and the second heat dissipation unit 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 dissipation unit 104 more easily compared to the case where the second heat dissipation unit 104 is arranged along the sixth surface 110-6 of the container 110, thereby increasing the heat dissipation capacity of the second heat dissipation unit 104.

[0052] Furthermore, in the image projection device 100-2 according to the second embodiment, the light-receiving heat-generating unit 102 may be a rotating body. In this case, the image projection device 100-2 according to the second embodiment can increase the heat transfer rate from the light-receiving heat-generating unit 102 to the air inside the container 110, thereby improving the cooling efficiency of the light-receiving heat-generating unit 102.

[0053] [Third Embodiment] Figure 6 is an internal configuration diagram of the image projection device 100-3 according to the third embodiment. The following describes the changes from the image projection device 100 according to the first embodiment regarding the image projection device 100-3 according to the third embodiment.

[0054] In the image projection device 100-3 according to the third embodiment, the second heat dissipation section 104 is integrally formed with the container 110. That is, in the image projection device 100-3 according to the third embodiment, the protrusions of the container 110 function as the second heat dissipation section 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 dissipation section 104, thereby increasing the cooling efficiency of the light-receiving heat-generating section 102. Furthermore, the image projection device 100-3 according to the third embodiment can be made less expensive because the number of parts is reduced.

[0055] In the third embodiment, the image projection device 100-3 is also provided with a protrusion on the sixth surface 110-6 of the container 110 that functions as a second heat dissipation section 104. As a result, the image projection device 100-3 in the third embodiment can dissipate heat from the light-receiving heat-generating section 102 from the sixth surface 110-6 of the container 110.

[0056] Furthermore, in the image projection device 100-3 according to the third embodiment, the airflow generator 106A is not provided at the intake / exhaust port 106-1. Thus, the airflow generator 106A may be provided at only one of the intake / exhaust ports 106-1 or 106-2.

[0057] [Fourth Embodiment] Figure 7 is an internal configuration diagram of the image projection device 100-4 according to the fourth embodiment. Figure 8 is a cross-sectional view of BB of the image projection device 100-4 shown in Figure 7. Figure 9 is a diagram showing the airflow path in the image projection device 100-4 according to the fourth embodiment. The following describes the changes from the image projection device 100 according to the first embodiment regarding the image projection device 100-4 according to the fourth embodiment.

[0058] As shown in Figure 7, the image projection device 100-4 according to the fourth embodiment is further provided with a heat dissipation unit 103C opposite the heat receiving plate 103A to which the light-emitting and heat-generating unit 101 is attached.

[0059] As a result, the image projection device 100-4 according to the fourth embodiment has an additional heat dissipation section 103C near the light-emitting heat-generating section 101, which reduces the thermal resistance between the light-emitting heat-generating section 101 and the additional heat dissipation section 103C, thereby improving the cooling performance of the light-emitting heat-generating section 101.

[0060] Furthermore, the image projection device 100-4 according to the fourth embodiment can dissipate heat from the light-emitting and heat-generating unit 101 through three heat-dissipating units 103C, thereby increasing the heat-dissipating area and improving the cooling capacity of the light-emitting and heat-generating unit 101.

[0061] Furthermore, as shown in Figure 8, the image projection device 100-4 according to the fourth embodiment is provided with an additional intake / exhaust port 106-3 on the 11th surface 120-11 of the housing 120 in order to supply cooling air to the additionally provided heat dissipation section 103C.

[0062] As a result, the image projection device 100-4 according to the fourth embodiment can generate airflow to the additionally provided heat dissipation section 103C, as indicated by the arrow in Figure 9, thereby increasing the heat dissipation capacity of the heat dissipation section 103C.

[0063] The location of the intake / exhaust port 106-3 is not limited to the 11th surface 120-11 of the housing 120.

[0064] For example, if the additionally provided heat dissipation section 103C is a plate fin type heat sink, and the surfaces of the plate fins are arranged along the eighth surface 120-8 and the ninth surface 120-9 of the housing 120, the intake and exhaust ports 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 to facilitate airflow between the fins.

[0065] Furthermore, for example, if the surfaces of the plate fins are arranged along the 10th surface 120-10 and the 11th surface 120-11 of the housing 120, the intake and exhaust ports 106-3 may be provided on one or both of the 8th surface 120-8 and the 9th surface 120-9 of the housing 120 to facilitate airflow between the fins.

[0066] However, the additional heat dissipation section 103C only needs to have at least irregularities, and includes plate fins, pin fins, corrugated fins, etc.

[0067] Furthermore, in the image projection device 100-4 according to the fourth embodiment, since two light-emitting heat-generating units 101 are attached to a single heat-receiving plate 103A, the temperature difference between the two light-emitting heat-generating units 101 can be reduced.

[0068] For example, if the light-emitting heat-generating unit 101 is a laser light source, the laser light source has the characteristic that its light utilization efficiency changes with temperature. Therefore, as the temperature difference between the two light-emitting heat-generating units 101 decreases, the difference in the amount of light emitted from the two light-emitting heat-generating units 101 decreases. For this reason, the image projection device 100-4 according to the fourth embodiment can project a more uniform image.

[0069] Although preferred embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments, and various modifications or changes are possible within the scope of the gist of the present invention as described in the claims. [Explanation of symbols]

[0070] 100, 100-2, 100-3, 100-4 Image projection device 101 Light-emitting and heat-generating section 102 Light-receiving heating element 103,103-1,103-2 1st heat dissipation section 103A heat receiving plate 103B Heat transfer component 103C Heat dissipation part 104,104-1,104-2 Second heat dissipation section 105 Third heat dissipation section 106, 106-1, 106-2, 106-3 Intake and exhaust ports 106A Airflow Generator 108 Space 109,109-2 Electronic circuit board 110 Container 110-1 1st page 110-2 2nd side 110-3 3rd page 110-4 4th page 110-5 5th page 110-6 Page 6 111 Heat transfer components 112 Heat receiving part 120 cabinets 120-7 Page 7 120-8 Side 8 120-9 Page 9 120-10 Side 10 120-11 Page 11 120-12 Page 12 121 Optical Lenses 122 Mirror 123 Composite Prism 124 Light Tunnel 125 Image forming panel 126 Projection system A1,A2 1st space B1,B2 2nd space [Prior art documents] [Patent Documents]

[0071] [Patent Document 1] Patent No. 6783545

Claims

1. A first light-emitting heat-generating part that generates heat when emitting light, A second light-emitting heat-generating part that generates heat when emitting light, A first light-receiving heat-generating unit that generates heat when struck by light emitted from the first light-emitting heat-generating unit, A second light-receiving heat-generating unit that generates heat when struck by light emitted from the second light-emitting heat-generating unit, A first heat dissipation unit that dissipates heat from the first light-emitting and heat-generating unit, Another first heat dissipation unit that dissipates heat from the second light-emitting and heat-generating unit, A second heat dissipation unit that dissipates heat from the first light-receiving heat-generating unit, Another second heat dissipation unit that dissipates heat from the second light-receiving heat-generating unit, A container that houses the first light-emitting and heat-generating unit, the second light-emitting and heat-generating unit, the first light-receiving and heat-generating unit, and the second light-receiving and heat-generating unit. Equipped with, The first optical path, which is emitted from the first light-emitting and heat-generating unit and reaches the first light-receiving and heat-generating unit, and the second optical path, which is emitted from the second light-emitting and heat-generating unit and reaches the second light-receiving and heat-generating unit, are separate optical paths that do not intersect. The aforementioned container is It has a first and sixth face that face each other, and a second and third face that face each other, At least one of the first light-emitting and heat-generating unit and the second light-emitting and heat-generating unit is provided on the first surface of the container. At least one of the first heat dissipation section and the other first heat dissipation section is provided on the first surface of the container. The second heat dissipation section is provided along at least one of the second and third surfaces of the container. Light source system.

2. Multiple light-emitting heat-generating parts that generate heat when emitting light, A light-receiving heating element that generates heat when exposed to light, A first heat dissipation unit that dissipates heat from the light-emitting and heat-generating unit, A second heat dissipation unit that dissipates heat from the light-receiving heat-generating unit, A container that houses the light-emitting and heat-generating unit and the light-receiving and heat-generating unit inside. Equipped with, The aforementioned container is It has a first and sixth face that face each other, and a second and third face that face each other, Two or more of the light-emitting and heat-generating units are provided on the first surface of the container, The first heat dissipation section is provided on the first surface of the container, The second heat dissipation section is provided along at least one of the second and third surfaces of the container. A light source system, The enclosure comprises a housing for containing the aforementioned container, The container has a fourth and a fifth surface that face each other, The aforementioned enclosure is A first space provided between the eighth surface of the container facing the second surface and the second surface of the container, and between the ninth surface of the container facing the third surface and the third surface of the container, A second space is provided between the tenth surface of the container facing the fourth surface and the fourth surface of the container, and between the eleventh surface of the container facing the fifth surface and the fifth surface of the container. It has, The second heat dissipation section is provided in the first space, When viewed from above from the sixth side of the container, the cross-sectional area of ​​the first space is larger than the cross-sectional area of ​​the second space. Light source system.

3. A part or all of the first heat dissipation section and a part or all of the second heat dissipation section are arranged within the same airflow path. The light source system according to claim 1 or 2.

4. The first heat dissipation section is, Heat receiving plate and Heat dissipation section, A heat transport component that thermally connects the heat receiving plate and the heat dissipation section. It has, The light-emitting and heat-generating section is Attached to the aforementioned heat receiving plate The light source system according to claim 2.

5. The light-receiving and heating element is attached to the inner surface of the container. The second heat dissipation section is attached to the outer surface of the container and to the back side of the light-receiving heat-generating section. The light source system according to claim 2 or 4.

6. The light-receiving and heating element is a rotating body. The light source system according to any one of claims 2, 4, or 5.

7. Multiple light-emitting heat-generating parts that generate heat when emitting light, A light-receiving heating element that generates heat when exposed to light, A first heat dissipation unit that dissipates heat from the light-emitting and heat-generating unit, A second heat dissipation unit that dissipates heat from the light-receiving heat-generating unit, A container that houses the light-emitting and heat-generating unit and the light-receiving and heat-generating unit inside. Equipped with, The aforementioned container is It has a first and sixth face that face each other, and a second and third face that face each other, Two or more of the light-emitting and heat-generating units are provided on the first surface of the container, The first heat dissipation section is provided on the first surface of the container, The second heat dissipation section is provided along at least one of the second and third surfaces of the container. A light source system, A heat receiving section provided inside the container, A heat transport component that thermally connects the heat receiving section and the second heat dissipation section. A light source system equipped with the following features.

8. The second heat dissipation portion is a protrusion provided on the outer surface of the container. A light source system according to any one of claims 1 to 7.

9. The second heat dissipation section is further provided along the sixth surface of the container. A light source system according to any one of claims 1 to 8.

10. Equipped with a heat receiving plate, The light-emitting heat-generating part is attached to one side of the heat-receiving plate. A heat dissipation section is attached to the other side of the heat receiving plate. The light source system according to claim 4.

11. Two or more of the light-emitting and heat-generating units are mounted on a single heat-receiving plate. A light source system according to any one of claims 2, 4, 5, 6, 7, or 10.

12. The light-receiving and heating element is The container is arranged along the second and third surfaces. A light source system according to any one of claims 2, 4, 5, 6, 7, 10, or 11.

13. An image projection apparatus comprising the light source system according to any one of claims 1 to 12.

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