WO2024075209A1

WO2024075209A1 - Light source device and projector

Info

Publication number: WO2024075209A1
Application number: PCT/JP2022/037259
Authority: WO
Inventors: 亮祐川瀬
Original assignee: シャープＮｅｃディスプレイソリューションズ株式会社
Priority date: 2022-10-05
Filing date: 2022-10-05
Publication date: 2024-04-11

Abstract

Provided is a light source device (3) comprising: a case member (10) having a first opening (11) and a connection port (12) that are aligned in a first direction and that are open in mutually opposite directions, and a second opening (13) that opens in a second direction orthogonal to the first direction; a first light source unit (20) that closes the first opening, and that emits light in the first direction toward the connection port; a second light source unit (30) that closes the second opening, and that emits light in the second direction toward the inside of the case member; a reflection mirror (40) that reflects light from the second light source unit so as to direct the light to the connection port; a lens (50) that closes the connection port, and that collects light from the first light source unit and the second light source unit; a pressing member (60) that presses the lens from the inside of the case member toward the outside; and a mounting member (70) that retains the reflection mirror on the inside of the case member. The pressing member is retained by the mounting member. The mounting member is fixed to the case member.

Description

Light source device and projector

This disclosure relates to a light source device and a projector.

Patent document 1 discloses a light source device that includes a light source unit, a lens that focuses the light emitted from the light source unit, and a holding member that holds the lens.

JP 2020-042147 A

Incidentally, some light source devices include two light sources that emit light from different positions toward a lens, and a reflector that reflects the light emitted from one of the light sources. In such light source devices, the light emitted from one of the light sources is reflected by the reflector, and is merged with the light emitted from the other light source before being incident on the lens.
This type of light source device is required to have a dust-proofing measure for the light source and to have a compact light source device.

This invention was made in consideration of the above-mentioned circumstances, and aims to provide a light source device that can be made compact and that can provide dust-proofing for the light source, and a projector equipped with the same.

The first aspect of the present invention is a light source device including a case member having a first opening and a connection port that open in opposite directions in a first linear direction and are aligned in the first linear direction, and a second opening that opens in a second linear direction that intersects the first linear direction; a first light source unit that is arranged to block the first opening and emits light in the first linear direction toward the connection port; a second light source unit that is arranged to block the second opening and emits light in the second linear direction toward the inside of the case member; a reflector that is arranged inside the case member and reflects the light emitted from the second light source unit and directs it toward the connection port; a lens that is arranged to block the connection port and transmits and collects light from the first light source unit and the second light source unit; a pressing member that is arranged inside the case member and presses the lens from the inside to the outside of the case member so that the lens blocks the connection port; and a mount member that is arranged inside the case member and holds the reflector. The pressing member is held by the mount member. The mount member is fixed to the case member.

The second aspect of the present invention is a projector equipped with the light source device.

The present invention makes it possible to miniaturize the light source device and provide dust protection for the light source.

1 is a perspective view showing the appearance of a projector according to an embodiment of the present invention; 1 is a perspective view showing a light source device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view showing the light source device of FIG. 2 . FIG. 3 is a partially cutaway perspective view of the light source device of FIG. 2. 5 is a perspective view of the light source device of FIG. 4 as viewed from a different angle. FIG. 3 is an exploded perspective view of the light source device of FIG. 2 . 7 is a cross-sectional view showing a case member constituting the light source device of FIGS. 2 to 6. FIG. FIG. 7 is a perspective view in which a part of a case member constituting the light source device of FIGS. 2 to 6 is cut away. FIG. 7 is a perspective view showing a lens, a mounting member, and a pressing member that constitute the light source device of FIGS. FIG. 10 is an exploded perspective view showing a state in which the pressing member is detached from the mount member in FIG. 9 . 7 is a cross-sectional view showing a state in which a mount member is attached to a case member in the light source device of FIGS. 2 to 6. FIG. 7 is a cross-sectional view showing a state in which a pressing member is attached to a case member via a mount member in the light source device of FIGS. 2 to 6. FIG. FIG. 11 is a cross-sectional view showing a case member constituting a light source device according to another embodiment of the present invention.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS.
1 is a device that projects image light (image) onto a display surface such as a screen. The projector 1 includes a light source device 3, an image light forming device (not shown), a projection device 5, and a housing 7. The housing 7 houses the light source device 3, the image light forming device, and the projection device 5.

The image light forming device creates image light based on light output from a light source device 3 described later. Although not shown, the optical engine has a light modulation element such as a DMD (Digital Micromirror Device) or a liquid crystal panel, and electronic components that control the light modulation element.
The projection device 5 enlarges the image light output from the image light forming device and projects it onto a display surface such as a screen.

The light source device 3 shown in Figures 2 to 6 is configured to merge the light emitted from the two

light source units

20, 30 using a reflector 40, and to focus the merged light using a lens 50. The light source device 3 includes a case member 10, a first light source unit 20, a second light source unit 30, a reflector 40, a lens 50, a pressing member 60, and a mounting member 70.

As shown in Figures 7 and 8, the case member 10 has a first opening 11, a connection port 12, and a second opening 13. The first opening 11 and the connection port 12 open in opposite directions to each other in the first linear direction and are aligned in the first linear direction. The second opening 13 opens in a second linear direction that intersects with the first linear direction. In this embodiment, the second linear direction is perpendicular to the first linear direction.

In Figures 2 to 12, the first linear direction is shown in the Z-axis direction, and the second linear direction is shown in the X-axis direction. In addition, the direction perpendicular to the first linear direction and the second linear direction (the third linear direction) is shown in the Y-axis direction.

As shown in Figures 7 and 8, the case member 10 of this embodiment is formed in a square tube shape with the first linear direction as the axial direction. The first opening 11 is formed in a rectangular shape corresponding to the square tube shape of the case member 10 when viewed in the axial direction of the case member 10. The connection port 12 is formed in a circular shape corresponding to the lens 50 (see Figures 3 to 6), which will be described later, when viewed in the axial direction of the case member 10.

When viewed from the first linear direction, the size of the circular connection port 12 is smaller than the rectangular first opening 11. For this reason, an edge portion 121 of the connection port 12 (an outer portion of the connection port 12) has an edge surface 14 facing the first opening 11 in the first linear direction.
The edge surfaces 14 located at the edge portion 121 of the connection port 12 are located on both sides of the connection port 12 in orthogonal directions (directions such as the X-axis direction and the Y-axis direction orthogonal to the Z-axis direction) that are orthogonal to the first linear direction (see FIG. 7 in particular). The dimensions of the edge surfaces 14 located on both sides of the connection port 12 in the orthogonal directions are equal to each other. The center of the circular connection port 12 is located on the axis of the case member 10 that is in the shape of a rectangular tube.

The edge surface 14 of the case member 10 has a support area 14A that supports a mount member 70 (see Figures 3 to 6) described below. The support area 14A is located away from the connection port 12 toward the first opening 11 in the first linear direction. In other words, the support area 14A is located closer to the first opening 11 than other areas of the edge surface 14, and there is a step between the support area 14A and the other areas. In this embodiment, the support area 14A is located in the four corner areas of the edge surface 14, which has a rectangular outer shape when viewed in the axial direction.

A number of positioning holes 141 are opened in the support area 14A of the case member 10. Although only one positioning hole 141 is shown in FIG. 8, there are actually two. The number of positioning holes 141 may be three or more. A number of case positioning pins 76 (see FIGS. 9 and 10) of the mounting member 70, which will be described later, are inserted into the positioning holes 141, respectively.

When viewed from the second linear direction, the second opening 13 of the case member 10 is formed in a rectangular shape similar to the first opening 11. A first side of the rectangular second opening 13 extends in the first linear direction (the axial direction of the case member 10), and a second side of the second opening 13 perpendicular to the first side extends in a third linear direction (the Y-axis direction).
The dimension of the second opening 13 in the first linear direction is smaller than the dimension of the case member 10, but the difference between these dimensions is small.

The case member 10 is integrally formed with an extension tube portion 16 that extends from the connection port 12 to the outside of the case member 10. The extension tube portion 16 has an axial direction that is the first linear direction, and is formed in a cylindrical shape that corresponds to the circular connection port 12. When viewed from the first linear direction, the size of the cylindrical extension tube portion 16 is smaller than the square-tube-shaped case member 10, and fits inside the case member 10.

As shown in Figures 3 to 5, the first light source unit 20 is arranged so as to cover the first opening 11 of the case member 10. The first light source unit 20 emits light in a first linear direction (positive direction of the Z axis) toward the connection port 12. In Figure 3, the direction in which the light emitted from the first light source unit 20 travels is indicated by an arrow LD1. The first light source unit 20 includes a light source section 100 that emits light, and a heat dissipation section 21 that has a mounting surface 22a on which the light source section 100 is placed.

In this embodiment, the first light source unit 20 has multiple light source sections 100 (six in FIG. 6). As shown in FIGS. 3, 4, and 6, each light source section 100 has a substrate 101 and a light-emitting element 102 mounted on the substrate 101. The light-emitting element 102 may be, for example, an LED (Light Emitting Diode), but is a laser diode in this embodiment. The light-emitting element 102 in this embodiment emits laser light in the blue wavelength range. In other words, the light source section 100 in this embodiment is a laser substrate. The number of light-emitting elements 102 provided in the light source section 100 may be two as shown in FIGS. 4 and 6, but is not limited to this.

As shown in Figures 3, 4, and 6, the mounting surface 22a of the heat dissipation section 21 in the first light source unit 20 is formed to be generally flat. In the illustrated example, the area of the mounting surface 22a surrounding the light source section 100 is positioned higher than the other area (the area on which the light source section 100 is mounted), but this is not limited to this.

The substrate 101 of the light source unit 100 is placed on the mounting surface 22a of the heat dissipation unit 21. The substrate 101 may be in direct contact with the mounting surface 22a, but the transfer of heat from the substrate 101 to the heat dissipation unit 21 may be improved by, for example, interposing thermally conductive grease between the substrate 101 and the mounting surface 22a.
When the light source unit 100 is placed on the placement surface 22a, the light generated by the light emitting element 102 of the light source unit 100 mainly travels in a direction away from the placement surface 22a (the positive Z-axis direction in the illustrated example).

The area of the mounting surface 22a is set small in consideration of the heat dissipation efficiency of the light source unit 100 by the heat dissipation unit 21. In other words, the area is set so that the ratio of the area occupied by the multiple light source units 100 to the area of the mounting surface 22a is large.

As shown in FIGS. 2, 3 and 6 , the heat dissipation section 21 of the first light source unit 20 has a base section 22 including a mounting surface 22 a , an extended heat dissipation section 23 , and a rear surface heat dissipation section 24 .
The base portion 22 is formed in a plate shape with its thickness direction aligned in the Z-axis direction. The base portion 22 is made of a highly conductive material such as copper.

The extended heat dissipation section 23 protrudes from both ends of the base section 22 in a third linear direction (Y-axis direction) along the mounting surface 22a. Note that the extended heat dissipation section 23 may protrude from only one end of the base section 22 in the third linear direction, for example. The extended heat dissipation section 23 is configured to dissipate heat by flowing air in a direction perpendicular to the mounting surface 22a (first linear direction; Z-axis direction) relative to the extended heat dissipation section 23.

Specifically, the extended heat dissipation section 23 includes a heat pipe 231 and a plurality of heat dissipation fins 232 attached to the heat pipe 231. The heat pipe 231 extends in the third linear direction from the end of the base section 22. In this embodiment, the heat pipe 231 penetrates the base section 22 in the third linear direction and extends from both ends of the base section 22. A plurality of the heat pipes 231 are arranged in the second linear direction (X-axis direction).

2 and 6, the multiple heat dissipation fins 232 of the extended heat dissipation section 23 are each formed into a plate shape with the thickness direction being the extension direction (Y-axis direction) of the heat pipe 231. The multiple heat dissipation fins 232 are lined up at intervals in the third linear direction on both sides of the base section 22 in the third linear direction. The heat pipes 231 are attached to the multiple heat dissipation fins 232 so as to penetrate the heat dissipation fins 232 in the thickness direction.
In the expanded heat dissipation section 23 configured in this manner, air can flow between the multiple heat dissipation fins 232 in a first linear direction (Z-axis direction).

3 and 4, the rear surface heat dissipation section 24 has a plurality of heat dissipation fins 241 provided on the rear surface 22b of the base section 22 facing the opposite side to the mounting surface 22a. The rear surface 22b of the base section 22 is generally parallel to the mounting surface 22a.
Each of the heat dissipation fins 241 is formed in a plate shape with a thickness direction being the third linear direction (Y-axis direction) along the rear surface 22b of the base portion 22. Each of the heat dissipation fins 241 extends in the second linear direction (X-axis direction) along the rear surface 22b of the base portion 22. The heat dissipation fins 241 are arranged at intervals in the third linear direction, similar to the heat dissipation fins 232 of the extended heat dissipation portion 23.
The plurality of heat dissipation fins 241 protrude from both ends of the base portion 22 in the second linear direction. This allows air to pass in the first linear direction (Z-axis direction) on both sides of the base portion 22 in the second linear direction so that the air passes between the plurality of heat dissipation fins 241 of the back surface heat dissipation portion 24. Note that the plurality of heat dissipation fins 241 may protrude from only one end of the base portion 22 in the second linear direction, for example.

The heat dissipation section 21 of the first light source unit 20 configured as described above plays a role in cooling the light source section 100 of the first light source unit 20. Specifically, the heat generated in the light source section 100 placed on the placement surface 22a of the first light source unit 20 is transferred to the base section 22, and then mainly to the heat pipes 231 and the multiple heat dissipation fins 232 of the extended heat dissipation section 23. Then, by flowing air in the first linear direction (Z-axis direction) between these multiple heat dissipation fins 232, specifically by flowing air in the positive direction of the Z-axis, the heat transferred from the light source section 100 to the multiple heat dissipation fins 232 of the extended heat dissipation section 23 is dissipated.

Furthermore, some of the heat transferred to the base unit 22 is also transferred to the multiple heat dissipation fins 241 of the rear heat dissipation unit 24. Then, by flowing air between the multiple heat dissipation fins 241 of the rear heat dissipation unit 24 in the first linear direction (Z-axis direction), specifically, by flowing air as shown by the arrow FD1 in FIG. 3, the heat transferred from the light source unit 100 to the multiple heat dissipation fins 241 of the rear heat dissipation unit 24 is dissipated.

3 and 4, the edge 111 of the first opening 11 of the case member 10 described above is in close contact with the area (peripheral area) of the mounting surface 22a of the first light source unit 20 surrounding the light source section 100. Although not shown, an elastic body such as an O-ring is provided on the edge 111 of the first opening 11. By pressing this elastic body against the peripheral area of the mounting surface 22a, the edge 111 of the first opening 11 can be in close contact with the peripheral area of the mounting surface 22a without any gaps.
With the first light source unit 20 attached to the case member 10 as described above, the light emitted from the first light source unit 20 travels in a first straight line direction from the first opening 11 of the case member 10 toward the connection port 12, as shown by the arrow LD1.

The case member 10 is disposed adjacent to the first light source unit 20 in the first linear direction (Z-axis direction). However, the case member 10 is formed so as not to protrude outward (X-axis positive direction, Y-axis direction) from the edge of the mounting surface 22a of the heat dissipation section 21 of the first light source unit 20. This makes it possible to prevent the case member 10 from blocking the flow of air passing between the multiple

heat dissipation fins

232, 241 of the extended heat dissipation section 23 and the back heat dissipation section 24 around the base section 22 from the back surface 22b side of the base section 22 to the mounting surface 22a side (Z-axis positive direction).

As shown in Figures 3 to 5, the second light source unit 30 is arranged so as to cover the second opening 13 of the case member 10. The second light source unit 30 emits light in a second linear direction (positive direction of the X-axis) toward the inside of the case member 10. Like the first light source unit 20, the second light source unit 30 includes a light source section 100 that emits light, and a heat dissipation section 31 that has a mounting surface 321a on which the light source section 100 is placed.

In this embodiment, the second light source unit 30 has multiple (three in FIG. 6) light source sections 100. The configuration of each light source section 100 is similar to that of the first light source unit 20. However, the light source section 100 of the second light source unit 30 is a laser substrate that emits laser light in the red wavelength range.

As shown in Figures 3, 4, and 6, the mounting surface 321a of the heat dissipation section 31 in the second light source unit 30 is formed to be generally flat. In the illustrated example, the area of the mounting surface 321a surrounding the light source section 100 is positioned higher than the other area (the area on which the light source section 100 is mounted), but this is not limited to this.

In the second light source unit 30, the light source section 100 is disposed on the mounting surface 321a of the heat dissipation section 31 in the same manner as in the first light source unit 20. The light generated by the light emitting element 102 of the light source section 100 mounted on the mounting surface 321a is directed mainly in a direction away from the mounting surface 321a (the positive direction of the X-axis in the illustrated example).

As shown in Figures 2, 3, and 6, the heat dissipation section 31 of the second light source unit 30 has a main heat dissipation section 32 including a mounting surface 321a, a heat pipe 34, and an extended heat dissipation section 33.

The main body heat dissipation section 32 has a plate-shaped main body base section 321 and a plurality of heat dissipation fins 322 extending from the base section 22. The main body base section 321 is formed in a plate shape with its thickness direction in the X-axis direction and is made of a highly conductive material such as copper.
The heat dissipation fins 322 are provided on a back surface 321b of the main body base portion 321 facing the opposite side to the mounting surface 321a. The back surface 321b of the main body base portion 321 is generally parallel to the mounting surface 321a. The heat dissipation fins 322 are each formed in a plate shape with a thickness direction in a third linear direction (Y-axis direction) along the back surface 321b of the main body base portion 321, and are arranged at intervals in the third linear direction.

The heat pipes 34 of the second light source unit 30 extend in the third linear direction from the ends of the main body base portion 321. In this embodiment, the heat pipes 34 extend from both ends of the base portion 22, penetrating the main body base portion 321 in the third linear direction. Multiple heat pipes 34 are lined up in the first linear direction (X-axis direction).

As shown in Figures 2 and 6, the extended heat dissipation section 33 of the second light source unit 30 is disposed on both sides of the main body heat dissipation section 32 in the third linear direction. Note that the extended heat dissipation section 33 may be disposed, for example, on only one side of the main body heat dissipation section 32 in the third linear direction. The extended heat dissipation section 33 is thermally connected to the main body heat dissipation section 32 via a heat pipe 34.

The extended heat dissipation section 33 has a plate-shaped extended base section 331 and a plurality of heat dissipation fins 332 extending from the extended base section 331. The extended base section 331 is formed in a plate shape with its thickness direction being in the X-axis direction, similar to the main body base section 321. A heat pipe 34 extending from an end of the main body heat dissipation section 32 penetrates the extended base section 331.
The multiple heat dissipation fins 332 of the extended heat dissipation section 33 are provided on the back surface of the extended base section 331 facing the same side as the back surface 321b of the main body base section 321. Similar to the heat dissipation fins 322 of the main body base section 321, the multiple heat dissipation fins 332 are each formed in a plate shape with the third straight direction as the thickness direction, and are arranged at intervals in the third straight direction.

The heat dissipation section 31 of the second light source unit 30 configured as described above plays a role in cooling the light source section 100 of the second light source unit 30. Specifically, the heat generated in the light source section 100 placed on the mounting surface 321a of the main body base section 321 of the main body heat dissipation section 32 is transferred to the main body base section 321, and then transferred to the multiple heat dissipation fins 322 of the main body heat dissipation section 32, and also transferred to the extended base section 331 and multiple heat dissipation fins 332 of the extended heat dissipation section 33 via the heat pipe 34. Then, by flowing air between these multiple

heat dissipation fins

322, 332 in the first linear direction (Z-axis direction), specifically by flowing air in the positive direction of the Z-axis, the heat transferred from the light source section 100 of the second light source unit 30 to the multiple

heat dissipation fins

322, 332 is dissipated.

3 and 4, the edge 131 of the second opening 13 of the case member 10 described above is in close contact with the area (peripheral area) of the mounting surface 321a of the second light source unit 30 surrounding the light source section 100. Although not shown, an elastic body such as an O-ring is provided on the edge 131 of the second opening 13. By pressing this elastic body against the peripheral area of the mounting surface 321a, the edge 131 of the second opening 13 can be in close contact with the peripheral area of the mounting surface 321a without any gaps.
When the second light source unit 30 is attached to the case member 10 as described above, the light emitted from the second light source unit 30 travels in a second linear direction (the positive X-axis direction in Figure 3) from the second opening 13 of the case member 10 toward the inside of the case member 10, as shown by arrow LD2.

The case member 10 is disposed adjacent to the second light source unit 30 in the second linear direction. Therefore, the case member 10 does not obstruct the flow of air passing between the

heat dissipation fins

322, 332 of the heat dissipation section 31 of the second light source unit 30.

As shown in FIGS. 3 to 5, the reflector 40 is disposed inside the case member 10. As shown by the arrow LD2 in FIG. 3, the reflector 40 reflects the light emitted from the second light source unit 30 and directs it toward the connection port 12 of the case member 10. The reflector 40 is disposed inside the case member 10 between the first opening 11 and the connection port 12, but does not block the light emitted from the first light source unit 20 and traveling from the first opening 11 toward the connection port 12. Specifically, the multiple light source parts 100 of the first light source unit 20 are disposed so that the light emitted from the multiple light source parts 100 of the first light source unit 20 passes around the reflector 40. The reflector 40 allows the light emitted from the first light source unit 20 and the second light source unit 30 to be merged and directed toward the connection port 12 of the case member 10.
The reflecting mirror 40 is attached to the inside of the case member 10 by being held by a mount member 70 which will be described later.

As shown in Figures 3 to 5, the lens 50 is arranged so as to cover the connection port 12 of the case member 10 from the inside of the case member 10. The lens 50 transmits and collects light from the first light source unit 20 and the second light source unit 30. The lens 50 is held in the connection port 12 of the case member 10 by a pressing member 60, which will be described later.

3 to 5, 11, and 12, the pressing member 60 is disposed inside the case member 10. The pressing member 60 is attached to the case member 10 by being held by a mount member 70, which will be described later. The pressing member 60 presses the lens 50 from the inside to the outside of the case member 10 so that the lens 50 blocks the connection port 12 of the case member 10. Specifically, the pressing member 60 presses the lens 50 against an edge portion 121 of the connection port 12 of the case member 10.
As shown in FIGS. 9 and 10 , the pressing member 60 is elastically deformable, and has a mounting portion 61 and an extending portion 62 .

The mounting portion 61 is a portion of the pressing member 60 that is attached to the opposing surface 72a side of the mounting member 70, which will be described later. As shown in Figures 5, 9, and 10, the mounting portion 61 is formed in a circular ring shape (annular shape) that surrounds the lens 50 when viewed from the first linear direction. The mounting portion 61 is disposed so as to face the edge surface 14 of the edge portion 121 of the connection port 12 in the first linear direction. In this embodiment, the mounting portion 61 is formed so as to face the other area of the edge surface 14 except for the support area 14A (see Figures 7 and 8) in the first linear direction.

The extension portion 62 extends inside the annular attachment portion 61 and faces the lens 50 in the first linear direction.
The pressing member 60 of this embodiment is formed in a plate shape whose thickness direction is the axial direction of the attached portion 61, and is elastically deformable in the thickness direction.

The above pressing member 60 can press the lens 50 against the edge 121 of the connection port 12 of the case member 10 as follows. With the lens 50 positioned so as to block the connection port 12 of the case member 10, the attached portion 61 of the pressing member 60 is brought closer to the edge surface 14 of the edge 121 of the connection port 12 in the first linear direction, whereby the extension portion 62 of the pressing member 60 is pressed against the lens 50, causing the pressing member 60 to elastically flex and deform. Then, the lens 50 is pressed against the edge 121 of the connection port 12 from inside the case member 10 by the elastic force of the elastically deformed pressing member 60.

As shown in Figures 3 to 5, the mount member 70 is disposed inside the case member 10 and holds the reflector 40 and the pressing member 60. The mount member 70 is fixed to the case member 10. The mount member 70 will be described in detail below.

As shown in Figures 3 to 5, 9, and 10, the mount member 70 has a first mounting portion 71 to which the reflector 40 is attached, and a second mounting portion 72 to which the pressing member 60 is attached. The first mounting portion 71 and the second mounting portion 72 are formed integrally, and are aligned in order in the first linear direction from the first opening 11 of the case member 10 toward the connection port 12 (positive direction of the Z axis). The mount member 70 is fixed to the case member 10 by attaching the second mounting portion 72 to the edge portion 121 of the connection port 12.

The second mounting portion 72 is formed in an annular shape corresponding to the annular edge surface 14 (edge portion 121) of the case member 10 when viewed from the first linear direction. The second mounting portion 72 has an opposing surface 72a that faces the edge portion 121 of the connection port 12 in the first linear direction. The aforementioned mounted portion 61 of the pressing member 60 is attached to the opposing surface 72a side of the mounting member 70. The mounting structure of the pressing member 60 relative to the second mounting portion 72 will be described below.

As shown in Figures 9 and 10, the second mounting portion 72 has a protrusion 73 that protrudes from the opposing surface 72a in a first linear direction (positive direction of the Z axis). The second mounting portion 72 has a plurality of such protrusions 73 (eight in the illustrated example). The mounted portion 61 of the pressing member 60 is supported by the tips of the plurality of protrusions 73. Therefore, the pressing member 60 is positioned at a position spaced from the opposing surface 72a.

The multiple protrusions 73 include a fixing protrusion 73A and a positioning protrusion 73B. The fixing protrusion 73A is a protrusion for fixing the pressing member 60 to the second mounting portion 72 by screwing. A first fixing screw 91 for fixing the pressing member 60 to the second mounting portion 72 is attached to the fixing protrusion 73A. The positioning protrusion 73B is a protrusion for positioning the pressing member 60 relative to the second mounting portion 72. A positioning pin 731 is provided at the tip of the positioning protrusion 73B, which is inserted into the mounted portion 61 of the pressing member 60.

The second mounting portion 72 has a plurality of case positioning pins 76 that protrude from the opposing surface 72a in a first linear direction (positive direction of the Z axis). The case positioning pins 76 are inserted into a plurality of positioning holes 141 that open into the support area 14A of the case member 10. In other words, the number of case positioning pins 76 corresponds to the number of positioning holes 141 of the case member 10.

The mounting member 70 is fixed to the case member 10 in the following manner.
11 , the opposing surface 72a of the second attachment portion 72 is brought into contact with the support region 14A of the edge surface 14 of the case member 10, thereby supporting the mount member 70 on the support region 14A. Then, the second fixing screw 92 is inserted into the second attachment portion 72 from the first opening 11 side and attached to the edge portion 121 of the connection port 12 at a portion where the support region 14A is formed, thereby fastening and fixing the second attachment portion 72 to the edge surface 14 of the case member 10.

11 and 12 , when the mount member 70 is fixed to the case member 10, the protrusion 73 of the second attachment portion 72 is positioned so as not to interfere with the support region 14A. Therefore, the tip of the protrusion 73 is positioned closer to the connection port 12 than the support region 14A in the first linear direction, and faces another region of the edge surface 14.
In the first linear direction, the length obtained by adding the protruding length of the protrusion 73 to the thickness of the attached portion 61 of the pressing member 60 supported by the tip of the protrusion 73 is shorter than the distance from the support region 14A of the edge surface 14 to other regions (the height of the support region 14A). As a result, when the mounting member 70 is supported by the support region 14A of the edge surface 14, a gap is formed between the attached portion 61 supported by the tip of the protrusion 73 of the mounting member 70 and other regions of the edge surface 14.

In addition, when the mount member 70 is fixed to the case member 10, the elastic force of the pressing member 60 (see Figures 5 and 9) attached to the mount member 70 presses the lens 50 against the edge 121 of the connection port 12 from inside the case member 10. This holds the lens 50 in the connection port 12 of the case member 10.

As shown in Figures 3 to 5, 10, and 11, the mounting member 70 has through holes 75 formed therein to allow the light emitted from the first light source unit 20 and the second light source unit 30 to pass through without impeding the light.

In the light source device 3 of this embodiment, light that passes through the lens 50 provided in the connection port 12 of the case member 10 is emitted to the outside from the opening at the tip of the extension tube portion 16 connected to the connection port 12 of the case member 10. For example, the image light forming device described above may be attached to the opening at the tip of the extension tube portion 16. In this embodiment, an optical system unit (not shown) of the light source device 3 is attached to the opening at the tip of the extension tube portion 16. The optical system unit appropriately processes the light (blue light, red light) from the light source portion 100 and emits white light to the image light forming device.

In the light source device 3 of this embodiment and the projector 1 including the same, the pressing member 60 is attached to the case member 10 via the mount member 70 that holds the reflector 40. Therefore, the size of the case member 10 can be kept small compared to when the pressing member 60 and the mount member 70 are attached to the case member 10 separately. In this regard, when the pressing member 60 and the mount member 70 are attached to the case member 10 separately, it is necessary to provide mounting portions for the pressing member 60 and the mount member 70 on the case member 10, so the size of the case member 10 becomes large. In contrast, when the pressing member 60 is held by the mount member 70, only the mounting portion for the mount member 70 is provided on the case member 10, and there is no need to provide a mounting portion for the pressing member 60. This allows the size of the case member 10 to be reduced. Therefore, the light source device can be made more compact.

In addition, the two

light source units

20, 30 cover the first opening 11 and the second opening 13 of the case member 10, and the lens 50 covers the connection port 12 of the case member 10, thereby effectively preventing dust from entering the inside of the case member 10. This prevents dust from adhering to the light source units 20, 30 (particularly the light-emitting elements 102 that emit light). In other words, dust-proofing measures can be taken for the

light source units

20, 30.

In addition, because the first light source unit 20 and the second light source unit 30 can be covered by the case member 10, which is made of a single component, dust can be effectively prevented from entering the inside of the case member 10, compared to when the case member 10 is made up of multiple components.

Furthermore, simply by positioning the mount member 70 holding the pressing member 60 in the second linear direction and the third linear direction relative to the case member 10, the pressing member 60 can be easily positioned relative to the case member 10 and the lens 50 arranged at its connection port 12 in these second linear direction and third linear direction.

Furthermore, in the light source device 3 and projector 1 of this embodiment, the

edges

111, 131 of the first and

second openings

11, 13 of the case member 10 are in close contact with the mounting

surfaces

22a, 321a of the

heat dissipation sections

21, 31 of the

light source units

20, 30, respectively. This makes it possible to more effectively prevent dust from entering the inside of the case member 10.

In addition, in the light source device 3 and projector 1 of this embodiment, the annular attachment portion 61 of the pressing member 60 is attached to the opposing surface 72a of the mount member 70 that faces the edge surface 14 of the edge portion 121 of the connection port 12, and then the mount member 70 is fastened and fixed to the edge surface 14. In this state, the pressing member 60 elastically flexes and deforms, and the extension portion 62 of the pressing member 60 presses the lens 50 against the edge portion 121 of the connection port 12 due to the elastic force of the pressing member 60. As a result, even if both the pressing member 60 and the mount member 70 cannot be fastened and fixed to the edge surface 14 of the edge portion 121 of the connection port 12 because the area of the edge surface 14 of the edge portion 121 of the connection port 12 is small, the pressing member 60 can reliably press the lens 50 against the edge portion 121 of the connection port 12, and the connection port 12 can be blocked by the lens 50.

Furthermore, in the light source device 3 and projector 1 of this embodiment, the dimensions of the edge surfaces 14 located on both sides of the connection port 12 in the orthogonal direction perpendicular to the first linear direction are equal to each other. This makes it possible to easily align the middle of the mount member 70 in the orthogonal direction with the middle of the connection port 12 in the orthogonal direction (i.e., the axis of the connection port 12). This makes it easy to position the pressing member 60 relative to the lens 50 in the orthogonal direction.

Furthermore, in the light source device 3 and projector 1 of this embodiment, of the edge surface 14 located on the edge 121 of the connection port 12 of the case member 10 and facing the first opening 11, the support area 14A that supports the mount member 70 is located away from the connection port 12 toward the first opening 11 in the first linear direction. Therefore, the position where the mount member 70 is screwed to the case member 10 can be moved closer to the first opening 11. As a result, even if the dimension of the case member 10 in the first linear direction is long, the mount member 70 can be easily screwed to the case member 10.

Furthermore, in the light source device 3 and projector 1 of this embodiment, the pressing member 60 is supported on the tip of the protrusion 73 protruding from the opposing surface 72a of the mount member 70. Therefore, by arranging the mount member 70 overlapping the support area 14A of the edge surface 14 of the edge portion 121 of the connection port 12 in the first linear direction, the pressing member 60 can be arranged close to the connection port 12 and the lens 50 even if the opposing surface 72a of the mount member 70 is positioned away from the connection port 12 and the lens 50. In other words, the pressing member 60 held by the mount member 70 can press the lens 50 against the edge portion 121 of the connection port 12.

In addition, in the light source device 3 and projector 1 of this embodiment, when the pressing member 60 is supported on the tip of the protrusion 73 of the mount member 70 and the mount member 70 is supported on the support region 14A of the edge surface 14, a gap is formed between the attached portion 61 supported on the tip of the protrusion 73 of the mount member 70 and other regions of the edge surface 14. This makes it possible to prevent the head of the first fixing screw 91 from coming into contact with other regions of the edge surface 14, even if the first fixing screw 91 is attached to the fixing protrusion 73A so as to sandwich the pressing member 60 between the fixing protrusion 73A of the protrusion 73.

Furthermore, in the light source device 3 and projector 1 of this embodiment, a plurality of case positioning pins 76 protruding from the opposing surface 72a of the mount member 70 are inserted into a plurality of positioning holes 141 opening into the support area 14A of the edge surface 14 of the case member 10. Therefore, the mount member 70 can be easily aligned with respect to the case member 10 in the orthogonal direction perpendicular to the first linear direction. This allows the center of the pressing member 60 held by the mount member 70 to be easily aligned with the connection port 12 of the case member 10 and the center of the lens 50 attached to the connection port 12 in the orthogonal direction.

Furthermore, in the light source device 3 and projector 1 of this embodiment, the size of the first opening 11 of the case member 10 is larger than the connection port 12 when viewed from the first linear direction. This allows the lens 50 to be easily inserted into the inside of the case member 10 from the first opening 11 and attached so that the connection port 12 is blocked from the inside of the case member 10.

In addition, in the light source device 3 and projector 1 of this embodiment, the size of the first opening 11 of the case member 10 is larger than the connection port 12, so that the size of the extension tube portion 16 connected to the connection port 12 can be made smaller than the case member 10. Therefore, when the air that has passed through the

heat dissipation portions

21, 31 of the first and second

light source units

20, 30 to cool the light source portion 100 passes outside the extension tube portion 16 in a direction perpendicular to the first linear direction (for example, the second and third linear directions), the extension tube portion 16 can be prevented from obstructing the flow of air. In addition, in this embodiment, since the extension tube portion 16 is formed in a cylindrical shape, the air can flow smoothly outside the extension tube portion 16. As a result, the air can flow smoothly through the

heat dissipation portions

21, 31 of the first and second

light source units

20, 30 to efficiently cool the light source portion 100.

The above describes an embodiment of the present invention, but the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the invention.

In the present invention, the positioning hole 141 of the case member 10 is not limited to opening in the support area 14A of the edge surface 14, but may open in another area of the edge surface 14, for example.

In the present invention, the mounting member 70 does not have to have, for example, the protrusion 73. In other words, the pressing member 60 may be attached to the opposing surface 72a of the mounting member 70.

In the present invention, the support area 14A of the edge surface 14 of the edge portion 121 of the connection port 12 that supports the mounting member 70 may be located, for example, not separated from the connection port 12.

In the present invention, the case member 10 does not have to be integrally formed with the extension tube portion 16 (see FIG. 7) of the above embodiment, as shown in FIG. 13, for example. In other words, the connection port 12 of the case member 10 may open to the outside.

REFERENCE SIGNS LIST 1 Projector 3 Light source device 10 Case member 11 First opening 111 Edge portion 12 Connection port 121 Edge portion 13 of connection port 12 Second opening 131 Edge portion 14 of second opening 13 Edge surface 14A Support area 141 Positioning hole 20 First light source unit 21 Heat dissipation portion 30 Second light source unit 31 Heat dissipation portion 40 Reflecting mirror 50 Lens 60 Pressing member 61 Mounted portion 62 Extension portion 70 Mount member 71 First mounting portion 72 Second mounting portion 72a Opposing surface 73 Protrusion 76 Case positioning pin

Claims

a case member having a first opening and a connection port that open in opposite directions to each other in a first linear direction and are aligned in the first linear direction, and a second opening that opens in a second linear direction that intersects with the first linear direction;
a first light source unit disposed to cover the first opening and configured to emit light in the first linear direction toward the connection port;
a second light source unit that is disposed to close the second opening and that emits light in the second linear direction toward an inside of the case member;
a reflector disposed inside the case member and configured to reflect light emitted from the second light source unit toward the connection port;
a lens disposed to close the connection port and configured to transmit and collect light from the first light source unit and the second light source unit;
a pressing member disposed inside the case member and pressing the lens from the inside to the outside of the case member so that the lens closes the connection port;
a mount member that is disposed inside the case member and that holds the reflector,
The pressing member is held by the mount member,
The light source device has the mount member fixed to the case member.
each of the first light source unit and the second light source unit includes a light source unit that emits light and a heat dissipation unit having a mounting surface on which the light source unit is mounted;
an edge portion of the first opening of the case member is in intimate contact with a region of the mounting surface of the first light source unit around the light source portion;
The light source device according to claim 1 , wherein an edge portion of the second opening of the case member is in intimate contact with a region of the mounting surface of the second light source unit surrounding the light source portion.
the pressing member is elastically deformable, and includes an annular attached portion attached to an opposing surface of the mount member opposing an edge portion of the connection port in the first linear direction, and an extending portion extending inward of the attached portion to face the lens in the first linear direction,
3. The light source device according to claim 1, wherein the mount member is fastened to an inner surface of the case member at an edge of the connection port and opposed to the opposing surface.
The light source device according to claim 3, wherein the support area of the edge surface located at the edge of the connection port that supports the mount member is located away from the connection port toward the first opening in the first linear direction.
The mounting member has a protrusion protruding from the opposing surface,
The light source device according to claim 4 , wherein the pressing member is supported by a tip of the protrusion.
The light source device according to claim 5, wherein when the pressing member is supported on the tip of the protrusion of the mounting member and the mounting member is supported on the support area of the edge surface, a gap is formed between the pressing member and other areas of the edge surface in the first linear direction.
The mounting member has a plurality of case positioning pins protruding from the opposing surface,
The light source device according to claim 3 , wherein the edge surface of the case member is provided with a plurality of positioning holes into which the plurality of case positioning pins are respectively inserted.
The edge surfaces located at the edge portions of the connection port are located on both sides of the connection port in a direction perpendicular to the first linear direction,
The light source device according to claim 3 , wherein dimensions of the edge surfaces located on both sides of the connection port in the perpendicular direction are equal to each other.
The light source device according to claim 1 or 2, wherein the size of the first opening is larger than the connection port when viewed from the first straight line direction.
A projector equipped with the light source device according to claim 1 or 2.