JP2017040785A - Lighting apparatus and projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting apparatus and a projector capable of appropriately detaching a light source device.SOLUTION: A lighting apparatus comprises: a light source device 5; an attachment member to which the light source device 5 is attached; and a first fixture (screw SR) inserted into the light source device 5 and fixing the light source device 5 to the attachment member, the light source device 5 comprises: a light source 56; and a housing 51 accommodating therein the light source 56, the housing 51 comprises: a first casing 511 and a second casing 512 combined with each other and accommodating therein the light source 56; and a second fixture (screw SC1) inserted into the first casing 511 and the second casing 512 and fixing the first casing 511 and the second casing 512 in a combined state, and an insertion direction of the first fixture SR differs from an insertion direction of the second fixture SC1.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a lighting device and a projector.

Conventionally, a light source device, a light modulation device that modulates light emitted from the light source device to form an image according to image information, and projection optics that enlarges and projects the formed image onto a projection surface such as a screen A projector including the apparatus is known (for example, see Patent Document 1).
In the projector described in Patent Document 1, the light source device includes a light source device main body having a light-emitting tube and a reflecting mirror, a collimating lens, a housing that houses these, and a flow path switching mechanism. . Among these, the housing is configured by combining a cylindrical member that covers the front side of the reflecting mirror and a shielding member that covers the rear side of the reflecting mirror.

JP 2011-181431 A

  By the way, it is necessary to replace the light source device depending on the rupture of the arc tube, the lifetime, and the like. In such a case, when the light source device is directly attached to the light source storage member in the projector, the light source device is removed from the light source storage portion and replaced. Further, when the light source attachment member to which the light source device is attached is detachably provided in the projector, the light source device is detached from the light source attachment member and replaced after the light source attachment member is removed from the projector. . In these configurations, the fixture for the light source device that fixes the light source device to the members to be attached (for example, the light source storage member and the light source attachment member), and a plurality of members that constitute the housing of the light source device (for example, the cylindrical member and the shield). When the housing fixture for fixing the member is visually recognized, an operator who replaces the light source device may accidentally remove the housing fixture.

  SUMMARY An advantage of some aspects of the invention is to provide an illumination device and a projector that can appropriately remove the light source device.

  The illumination device according to the first aspect of the present invention includes a light source device, a member to which the light source device is attached, a light source device and the member to be attached, and the light source device and the member to be attached are fixed. The light source device includes a light source and a housing that houses the light source therein, and the housing is combined with each other to store the light source inside the first housing. A body, a second housing, and a second fixture that is inserted into the first housing and the second housing and fixes the first housing and the second housing, and the light source The extraction direction of the first fixture relative to the apparatus is different from the extraction direction of the second fixture.

In addition, as a 1st fixing tool and a 2nd fixing tool, fastening members, such as a screw, can be illustrated.
According to the first aspect, the extraction direction of the first fixture for fixing the light source device to the attached member and the extraction direction of the second fixture for fixing the first housing and the second housing of the housing are provided. Since it is different, when the light source device is viewed from the extraction direction side of the first fixing tool, it is difficult to visually recognize the second fixing tool. Therefore, when removing the light source device from the attached member by extracting the first fixture, the second fixture can be prevented from being extracted, and the light source device can be appropriately removed.

In the first aspect, the first fixture is inserted into the light source device and the attached member along a direction in which the attached member is positioned with respect to the light source device, and the second fixture is It is preferable that the first fixture is inserted into the first casing and the second casing along a direction opposite to the insertion direction of the first fixture.
According to such a configuration, since the insertion directions of the first fixture and the second fixture are opposite to each other, as described above, when the light source device is viewed from the extraction direction side of the first fixture. In addition, the second fixture can be made more difficult to visually recognize. Thereby, when extracting a 1st fixing tool and removing a light source device from a to-be-attached member, it can suppress reliably that a 2nd fixing tool is extracted. Therefore, the light source device can be appropriately removed from the attached member.

In the first aspect, the first housing is located on the attached member side of the housing, and the second housing is located on the opposite side of the housing from the attached member, It is preferable that the fixture is inserted into the attached member from the second housing side, and the second fixture is inserted into the second housing from the first housing side.
According to such a configuration, the insertion directions of the first fixing tool and the second fixing tool can be surely opposite to each other. In other words, the extraction directions of the first fixing tool and the second fixing tool can be surely opposite to each other. Accordingly, it is possible to make it more difficult to visually recognize the second fixing tool when the first fixing tool is extracted, and it is possible to reliably suppress the second fixing tool from being extracted.

In the first aspect, the first housing has an insertion hole into which the second fixing tool is inserted in a surface facing the attached member, and the second fixing tool inserted into the insertion hole. Is preferably covered by the attached member.
According to such a configuration, it is difficult to visually recognize the second fixture in a state where the light source device is attached to the attached member. Therefore, when removing the light source device from the attached member, the second fixture is pulled out. Can be suppressed more reliably. Therefore, the light source device can be appropriately removed from the attached member.

In the first aspect, it is preferable that the first casing has a hole portion through which the first fixing member inserted from the second casing side and fixed to the attached member is inserted.
Here, when the hole is located in the second casing away from the attached member, the dimension between the hole and the attached member becomes long. In this case, it is not only necessary to employ a relatively long first fixing tool, but it is difficult to stabilize the light source device with respect to the attached member.
On the other hand, when the hole is located in the first housing closer to the attached member than the second housing, the dimension between the hole and the attached member can be shortened. Therefore, a relatively short first fixing tool can be employed, and the light source device can be stably fixed to the attached member.

In the first aspect, the first housing has a protruding portion that protrudes outward from the second housing when viewed from the mounting side of the light source device with respect to the mounted member, and the hole portion is the protruding It is preferable to be located in the part.
According to such a configuration, the hole portion through which the first fixture is inserted is located at the protruding portion that protrudes outward from the second housing, so that the first light source device is attached to the attached member at the first side. The fixture can be easily inserted and removed, and thus the first fixture can be easily inserted and removed from the attached member. Therefore, the light source device can be easily attached to and detached from the attached member.

In the first aspect, it is preferable that the first housing is located on a light emission side of the light source device with respect to the second housing.
According to such a configuration, the light source device is arranged such that the first casing located on the light emission side with respect to the second casing is close to the attached member. According to this, it is possible to easily adjust the light emission position with respect to the attached member. Therefore, the traveling direction of the light emitted from the illumination device can be adjusted easily and appropriately.

A projector according to a second aspect of the present invention includes the illumination device.
According to the said 2nd aspect, there can exist an effect similar to the illuminating device which concerns on the said 1st aspect.

In the second aspect, it is preferable that the illuminating device includes a plurality of the light source devices, and the projector includes an optical path changing device that changes and outputs an optical path of light emitted from the plurality of light source devices.
According to such a configuration, when a plurality of light source devices are attached to the attached member, or when a plurality of attached members to which the light source device is attached are provided, the light path changing device emits light from each light source device. Light can be emitted in one direction. Therefore, an image can be formed by effectively using the light emitted from each light source device, and the brightness of the projected image can be increased.

1 is a schematic perspective view showing a projector according to an embodiment of the invention. The schematic diagram which shows the internal structure of the projector in the said embodiment. The perspective view which shows the illuminating device in the said embodiment. The top view of the illuminating device in the said embodiment. The perspective view which shows the light source attachment member of the state in which the light source device in the said embodiment was attached. The perspective view which shows the light source attachment member of the state from which the light source device in the said embodiment was removed. The perspective view which shows the flow dividing member in the said embodiment. The perspective view which shows the flow dividing member in the said embodiment. The perspective view which shows the light source device in the said embodiment. The perspective view which shows the light source device in the said embodiment. The disassembled perspective view which shows the light source device in the said embodiment. The disassembled perspective view which shows the light source device in the said embodiment. The disassembled perspective view which shows the intermediate member in the said embodiment, a light source, and a fixing member. The disassembled perspective view which shows the intermediate member in the said embodiment, a light source, and a fixing member. The figure which shows the intermediate member in the said embodiment. The figure which shows the intermediate member in the said embodiment. Sectional drawing which shows the light source in the said embodiment. The figure which shows the reflector in the said embodiment. The figure which shows the fixing member in the said embodiment. The figure which shows the intermediate member to which the light source and fixing member in the said embodiment were attached. The figure which shows the intermediate member to which the light source and fixing member in the said embodiment were attached.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[External configuration of projector]
FIG. 1 is a schematic perspective view showing a projector 1 according to this embodiment.
The projector 1 according to the present embodiment modulates light emitted from an illuminating device 31 described later to form an image according to image information, and projects the image on a projection surface such as a screen in an enlarged manner. Device. As shown in FIG. 1, the projector 1 includes an exterior housing 2 that constitutes an exterior.
As will be described in detail later, such a projector 1 has a plurality of lamp units 4 to which a plurality of light source devices 5 are detachably attached, and an optical path changing device that emits light emitted from each lamp unit in one direction. 7 is provided in the exterior housing 2. In the projector 1, the extraction direction of the fixture that fixes each light source device 5 to the mounting portion of the light source mounting member 6 that configures the lamp unit 4, and the first housing 511 and the second housing that configure the light source device 5. One feature is that it is configured such that the direction of extraction of the fixture that fixes the body 512 (see FIGS. 11 and 12) is reversed. In the projector 1, a reflector 652 (see FIGS. 11 and 12) that is a round reflector is employed in the light source device 5, and the reflector 652 is fixed to the emission side casing 51 </ b> A located on the light emission side. It has a point as another feature.
Hereinafter, the configuration of the projector 1 will be described.

[Configuration of exterior casing]
The exterior housing 2 is formed in a substantially rectangular parallelepiped shape, and the exterior housing 2 has a top surface portion 21, a bottom surface portion 22, a front surface portion 23, a back surface portion 24, a left side surface portion 25, and a right side surface portion 26.
The top surface portion 21 is provided with a pair of grip portions 211 that are used by a user to hold the projector 1 or to fix the projector 1 to an appliance installed on a ceiling or the like.
Although not shown, the bottom surface portion 22 is provided with leg portions that come into contact with the placement surface when the projector 1 is placed on the placement surface.
The front portion 23 is formed with an opening 231 that exposes a part of a projection optical device 35 to be described later.
Although not shown, the rear portion 24 has an opening for inserting and removing the lamp unit 4 (4A, 4B) and the optical path changing device 7 of the illumination device 31 (see FIG. 2), which will be described later, into and out of the exterior housing 2. Is formed. The opening is covered with a cover member.

[Internal configuration of projector]
FIG. 2 is a schematic diagram showing the internal configuration of the projector 1.
In addition to the outer casing 2, the projector 1 includes an image forming apparatus 3 disposed in the outer casing 2 as shown in FIG. In addition, the projector 1 includes a control device that controls the projector 1 and a power supply device that supplies power to the electronic components constituting the projector 1.

[Configuration of Image Forming Apparatus]
The image forming apparatus 3 forms and projects an image corresponding to the image information input from the control device. The image forming apparatus 3 includes an illumination device 31, a uniformizing device 32, a color separation device 33, an electro-optical device 34, a projection optical device 35, an optical component housing 36, and a base member 37.
Among these, the base member 37 is a member that is connected to the optical component housing 36 and to which the lamp unit 4 (4A, 4B) and the optical path changing device 7 constituting the illumination device 31 are fixed.

The illuminating device 31 emits light to the homogenizing device 32. The configuration of the illumination device 31 will be described in detail later.
The homogenizer 32 uniformizes the illuminance in the plane orthogonal to the central axis of the light emitted from the illumination device 31. The homogenizer 32 includes a cinema filter 321, a first lens array 322, a UV filter 323, a second lens array 324, a polarization conversion element 325, and a superimposing lens 326.
The color separation device 33 separates the light incident from the uniformizing device 32 into three color lights of red (R), green (G), and blue (B). The color separation device 33 includes dichroic mirrors 331 and 332, reflection mirrors 333 to 336, and relay lenses 337 and 338.

The electro-optical device 34 modulates the separated color lights according to the image information, and then synthesizes the modulated color lights. The electro-optical device 34 includes a liquid crystal panel 341 as a light modulation device provided for each separated color light (red, green, and blue liquid crystal panels are referred to as 341R, 341G, and 341B, respectively) and an incident side polarizing plate 342. And the output side polarizing plate 343 and one color composition device 344. Among these, a cross dichroic prism can be adopted as the color composition device 344.
The projection optical device 35 is a projection lens that enlarges and projects the light synthesized by the color synthesis device 344 (light that forms an image) onto the projection surface. As such a projection optical device 35, a combined lens in which a plurality of lenses are arranged in a lens barrel can be adopted.

  The optical component casing 36 is a box-shaped casing in which an illumination optical axis Ax is set. The homogenizer 32 and the color separation device 33 are arranged on the illumination optical axis Ax in the optical component casing 36. It is arranged at the position. The illumination device 31, the electro-optical device 34, and the projection optical device 35 are arranged according to the illumination optical axis Ax, although they are located outside the optical component housing 36.

[Configuration of lighting device]
FIG. 3 is a perspective view showing the lighting device 31, and FIG. 4 is a plan view showing the lighting device 31.
The illumination device 31 emits light to the uniformizing device 32 as described above. The illumination device 31 includes a plurality of lamp units 4 (4A, 4B) each having a plurality of light source devices 5, an optical path changing device 7, and a cooling device 8, as shown in FIGS. More specifically, the illumination device 31 includes two lamp units 4A and 4B each having two light source devices 5, an optical path changing device 7, and a cooling device 8.
In the following description, the traveling direction of the light emitted from the illumination device 31 is defined as the + Z direction, and the directions orthogonal to the + Z direction and orthogonal to each other are defined as the + X direction and the + Y direction. In the present embodiment, the direction from the left side surface portion 25 toward the right side surface portion 26 is defined as the + X direction, and the direction from the bottom surface portion 22 toward the top surface portion 21 is defined as the + Y direction. Although not shown, for convenience of explanation, the direction opposite to the + Z direction will be described as the −Z direction. The same applies to the −X direction and the −Y direction.

[Configuration of cooling device]
The cooling device 8 sends out the cooling gas supplied to each light source device 5 under the control of the control device, and cools the arc tube 561 (see FIG. 11) constituting each light source device 5. As shown in FIGS. 3 and 4, the cooling device 8 is disposed on the Y direction side with respect to an optical path changing device 7 described later. Such a cooling device 8 is driven independently, sucks the cooling gas in the exterior housing 2, and sends out the cooling gas supplied to the corresponding light source device 5, and the cooling fans 81 to 84, And a box-shaped housing 85 in which the cooling fans 81 to 84 are arranged.
In addition, although mentioned later in detail, the cooling gas sent out along the -X direction from the cooling fans 81 and 82 passes through the two diversion members DM corresponding to the light source devices 5A and 5B, and the light source device 5A, 5B. Further, the cooling gas sent out from the cooling fans 83 and 84 along the + X direction is supplied to the light source devices 5C and 5D via the two flow dividing members DM corresponding to the light source devices 5C and 5D, respectively.

[Configuration of lamp unit]
Each of the lamp units 4A and 4B includes two light source devices 5 and a light source attachment member 6 to which the two light source devices 5 are attached. Specifically, of the lamp units 4A and 4B, the first lamp unit 4A includes light source devices 5A and 5B and a light source mounting member 6A, and the second lamp unit 4B includes light source devices 5C and 5D and a light source mounting member 6B. Have
Among these, the configuration of the light source device 5 will be described in detail later.
Further, the light source attachment member 6 (6A, 6B) is inserted into and removed from the projector 1 with the two light source devices 5 attached.

[Configuration of light source mounting member]
FIG. 5 is a perspective view showing the first lamp unit 4A, and FIG. 6 is a perspective view showing the light source mounting member 6A. That is, FIGS. 5 and 6 are perspective views of the light source mounting member 6A with the light source devices 5A and 5B attached and the light source mounting member 6A with the light source device 5 not attached, as viewed from the same direction. FIG.
As shown in FIGS. 5 and 6, the light source mounting member 6A constituting the first lamp unit 4A is fixed to the main body 6A1 having two mounting portions 6A2 arranged in series in the Z direction, and the main body 6A1. Holding part 6A9.
The grip portion 6A9 is fixed to the end portion on the −Z direction side of the main body portion 6A1. The grip 6A9 is provided with a handle 6A91 gripped by the user so as to be rotatable about an axis along the + Y direction.

The light source device 5 is attached to the two attachment portions 6A2 along the −X direction so that the surfaces on the light emission side face each other. Among these attachment portions 6A2, the light source device 5A is attached to the attachment portion 6A2 on the -Z direction side, and the light source device 5B is attached to the attachment portion 6A2 on the + Z direction side.
As shown in FIG. 6, these attachment portions 6 </ b> A <b> 2 have side surface portions 6 </ b> A <b> 3 that face the light emission side surface of the light source device 5, and each side surface portion 6 </ b> A <b> 3 has light emitted from the corresponding light source device 5. A substantially circular opening 6A4 through which passes is formed. That is, the light emitting side surface of the light source device 5 is covered with the side surface portion 6A3 (light source mounting member 6A).
In addition, the side surface portion 6A3 includes a plurality of bosses 6A5 and 6A6 protruding toward the light source device 5 side. At the tip of the boss 6A5, a positioning projection that is inserted into the light source device 5 to position the light source device 5 is provided. The boss 6A6 is formed with a screw hole into which a screw SR (see FIGS. 11 and 12) inserted into the light source device 5 is screwed.

  Each attachment portion 6A2 has a protruding portion 6A7 that protrudes to the + X direction side (light source device 5 side) at a position on the + Y direction side. Two terminals 6A8 that are connected to connectors 5132 and 5133 (see FIG. 9) provided in the light source device 5 and supply power to the light source device 5 correspond to the mounting portions 6A2. Is provided.

  When the light source device 5 is attached to the attachment portion 6A2, first, the light emitting side surface 511F (see FIG. 9) of the light source device 5 is directed to the attachment portion 6A2, and the connectors 5132 and 5133 and the terminal 6A8 are connected. As described above, the light source device 5 is attached to the attachment portion 6A2. At this time, with the positioning projection of the boss 6A5 inserted and the light source device 5 positioned, the screw SR inserted through the light source device 5 is screwed into the screw hole of the boss 6A6. Thereby, as shown in FIG. 5, the light source device 5 is fixed to the corresponding attachment portion 6A2. That is, the light source device 5 is attached to the attachment portion 6A2 along the traveling direction of the emitted light from the light source device 5 (the + N direction described later).

  Note that the position in the + Y direction differs between the mounting portion 6A2 located on the −Z direction side and the mounting portion 6A2 on the + Z direction side. Specifically, the attachment portion 6A2 located on the −Z direction side is located on the + Y direction side from the attachment portion 6A2 located on the + Z direction side. For this reason, among the light source devices 5A and 5B attached to these attachment portions 6A2, the light source device 5A is arranged on the + Y direction side from the light source device 5B.

As shown in FIGS. 3 and 4, the light source mounting member 6B of the second lamp unit 4B includes a main body portion 6B1 similar to the main body portion 6A1 of the light source mounting member 6A and a gripping portion 6B9 similar to the gripping portion 6A9. Have.
Among these, the grip portion 6B9 having the handle 6B91 is fixed to the end portion on the −Z direction side in the main body portion 6B1. That is, when the lamp units 4A and 4B are arranged so as to sandwich the optical path changing device 7, the gripping portions 6A9 and 6B9 are respectively positioned on the −Z direction side in the illumination device 31.
Although not shown, the main body portion 6B1 is arranged in series in the + Z direction and has two attachment portions to which the light source devices 5C and 5D are attached, respectively, and the two attachment portions are the attachment portions 6A2. It has the same configuration as. In the main body 6B1, the mounting portion on the + Z direction side is positioned on the + Y direction side with respect to the mounting portion on the −Z direction side, whereby the light source device 5D is fixed at a position on the + Y direction side with respect to the light source device 5C. Is done.

That is, when the illumination device 31 is viewed along the + X direction or the −X direction, the light source devices 5A and 5C attached to the light source attachment members 6A and 6B have the traveling directions of the emitted lights at positions overlapping in the + Z direction. Oppositely arranged so as to be in the opposite direction. Similarly, the light source devices 5B and 5D attached to the light source attachment members 6A and 6B are disposed to face each other at positions overlapping in the + Z direction so that the traveling directions of the emitted light are opposite to each other.
On the other hand, the arrangement positions of the light source devices 5A and 5C in the Y direction are different from each other, and the arrangement positions of the light source devices 5B and 5D in the Y direction are different from each other. In other words, the light source devices 5A and 5D are at the same position in the Y direction, and the light source devices 5B and 5C are at the same position in the Y direction.
Thereby, it is possible to prevent one of the light sources 5A and 5C facing each other from being incident on the other, and one of the light sources 5B and 5D facing each other is incident on the other. Can be suppressed.

[Composition of flow dividing member]
FIG. 7 is a perspective view of the flow dividing member DM as viewed from the cooling gas inflow side. FIG. 8 is a perspective view of the flow dividing member DM as viewed from the inflow side and the side facing the light source device 5.
In the projecting portions 6A7 of the main body portions 6A1 and 6B1, there are provided diversion members DM for guiding the cooling gas delivered from the cooling fans 81 to 84 to the corresponding light source devices 5, respectively. As shown in FIGS. 7 and 8, these flow dividing members DM have an inlet DM1, a plurality of independent duct portions DM2 to DM5, a flow path switching member DM6, and an outlet DM7.

The inlet DM1 is formed in a substantially square shape on the surface facing the corresponding cooling fan in the flow dividing member DM, and one end of each of the duct portions DM2 to DM5 communicates with the inlet DM1. In addition, a flow path switching member DM6, which is a substantially 3/5 circular plate-like body, is mounted in the introduction port DM1 so as to be rotatable about a rotation axis along the flow direction of the cooling gas with respect to the introduction port DM1. ing. The flow path switching member DM6 is rotated by its own weight according to the attitude of the projector 1, so that the duct part in which a part of the cooling gas introduced into the inlet DM1 is mainly circulated among the duct parts DM3 to DM5. Switch.
Note that one end of the duct portion DM2 is located upstream of the cooling gas from the flow path switching member DM6 in the introduction port DM1. For this reason, regardless of the attitude of the projector 1, that is, the rotation state of the flow path switching member DM6, a part of the cooling gas introduced into the inlet DM1 is introduced into the duct portion DM2.

The outlet DM7 is constituted by outlets DM71 to DM74 formed by the other ends of the duct portions DM2 to DM5. Among these, the outlet DM71 is formed by the other end of the duct part DM2, and the outlet DM72 is formed by the other end of the duct part DM3. The outlet DM73 is formed by the other end of the duct part DM4, and the outlet DM74 is formed by the other end of the duct part DM5.
Such a diversion member DM sends a part of the cooling gas introduced into the inlet DM1 from the corresponding cooling fan in the cooling device 8 to the light source device 5 from the outlet DM71 via the duct portion DM2. Further, the diversion member DM does not block other part of the cooling gas introduced into the introduction port DM1 by the flow path switching member DM6 rotated according to the attitude of the projector 1 among the duct portions DM3 to DM5. The light is sent to the light source device 5 from the outlet (at least one of the outlets DM72 to DM74) corresponding to the duct through the duct.
Thereby, the cooling gas can be blown from the position corresponding to the posture of the projector 1 to the arc tube 561 of the light source device 5 described later.

[Configuration of optical path changing device]
As shown in FIG. 2, the optical path changing device 7 is disposed between the lamp units 4A and 4B. The optical path changing device 7 reflects the light incident along the −X direction from the light source devices 5A and 5B and the light incident along the + X direction from the light source devices 5C and 5D to the + Z direction side, and thus , And is incident on the homogenizer 32.
Such an optical path changing device 7 includes four reflecting mirrors 71 to 74 and four lenses 75 to 78 that are provided according to the light source devices 5A to 5D, and a housing 79 in which these are housed. .

The reflection mirror 71 is disposed at a position where light emitted from the light source device 5A is incident, and the reflection mirror 72 is disposed at a position where light emitted from the light source device 5B is incident. Further, the reflection mirror 73 is disposed at a position where light emitted from the light source device 5C is incident, and the reflection mirror 74 is disposed at a position where light emitted from the light source device 5D is incident. These reflection mirrors 71 to 74 reflect the incident light toward the + Z direction.
As described above, since the light source devices 5A and 5D are located on the + Y direction side from the light source devices 5B and 5C, the reflection mirrors 71 and 74 into which light enters from the light source devices 5A and 5D are also included in the light source device 5B. , 5C is located on the + Y direction side from the reflection mirrors 72 and 73 on which light is incident.

The lenses 75 to 78 are provided on the optical path of the light reflected by the corresponding reflecting mirrors 71 to 74. Specifically, when viewed from the + Y direction side, the lens 75 is disposed between the reflection mirrors 71 and 72, and collimates the emitted light of the light source device 5A reflected by the reflection mirror 71. The lens 76 is disposed on the + Z direction side with respect to the reflection mirror 72, and collimates the emitted light of the light source device 5 </ b> B reflected by the reflection mirror 72. Similarly, the lens 77 is disposed between the reflection mirrors 73 and 74 and collimates the light emitted from the light source device 5 </ b> C reflected by the reflection mirror 73. The lens 78 is arranged on the + Z direction side with respect to the reflection mirror 74, and collimates the emitted light of the light source device 5D reflected by the reflection mirror 74.
With such an optical path changing device 7, the light emitted from each of the light source devices 5 </ b> A to 5 </ b> D is reflected and collimated by the reflection mirrors 71 to 74 and the lenses 75 to 78, and emitted to the + Z direction side.

[Configuration of light source device]
FIG. 9 is a perspective view of the light source device 5 as seen from the light emission side, and FIG. 10 is a perspective view of the light source device 5 as seen from the side opposite to the light emission side. FIG. 11 is an exploded perspective view of the light source device 5 viewed from the light emitting side, and FIG. 12 is an exploded perspective view of the light source device 5 viewed from the side opposite to the light emitting side.
The light source device 5 (5A to 5D) is attached to each light source attachment member 6 as described above, and emits light toward the optical path changing device 7, respectively.
These light source devices 5 include a housing 51 as shown in FIGS. 9 and 10, and as shown in FIGS. 11 and 12, a light shielding member 52, an intermediate member 53, a collimating lens 54, a pressing member 55, a light source. 56, a fixing member 57, a light shielding member 58, and a plurality of screws SC1, SC2.

  In the following description, the traveling direction of the light emitted from the light source device 5 is defined as + N direction, and the directions orthogonal to the + N direction and orthogonal to each other are defined as + L direction and + M direction. In the present embodiment, when the light source device 5 is attached to the light source attachment member 6, the light source device 5 is viewed from the light emitting side so that the direction along the + Y direction is the + M direction and the + M direction side is the upper side. In this case, the direction from left to right is defined as + L direction. That is, in the light source devices 5A and 5B attached to the light source attachment member 6A, the + N direction matches the −X direction, the + M direction matches the + Y direction, and the + L direction matches the + Z direction. On the other hand, in the light source devices 5C and 5D attached to the light source attachment member 6B, the + N direction coincides with the + X direction, the + M direction coincides with the + Y direction, and the + L direction coincides with the −Z direction. Although illustration is omitted, for convenience of explanation, the direction opposite to the + N direction will be described as the −N direction. The same applies to the −M direction and the −L direction.

[Housing configuration]
The housing 51 is a light source housing that houses the above-described members 52 to 58. The housing 51 includes a first housing 511, a second housing 512, a terminal portion 513, and an intermediate member 53 described later. Composed in combination. That is, by combining the first casing 511 and the intermediate member 53, an emission-side casing 51 </ b> A located on the light emission side from the light source device 5 in the housing 51 is configured, and the second casing 512 and the terminal portion 513 are configured. By being combined, the base end side casing 51B located on the opposite side to the light emitting side in the housing 51 is configured.

[Configuration of second housing and terminal section]
Here, the 2nd housing | casing 512 and the terminal part 513 are demonstrated previously.
As described above, the second housing 512 and the terminal portion 513 are combined with each other to form a proximal-side housing 51 </ b> B located on the proximal side (−N direction side) in the light emission direction in the housing 51.
Among these, as shown in FIGS. 9 to 12, the terminal portion 513 is formed in a substantially T shape in which a wide portion 5131 wide in the + L direction is formed on the + M direction side. The wide portion 5131 is provided with two connectors 5132 and 5133 for supplying electric power to the arc tube 561 described later. These connectors 5132 and 5133 are connected to terminal portions (for example, terminals 6A8) provided on the light source mounting member 6.

The second casing 512 is a substantially rectangular parallelepiped box-shaped casing, and the terminal portion 513 is fitted and fixed to a recess 5121 formed on the end surface on the −N direction side. An end on the −N direction side of the second casing 512 protrudes toward the + M direction, and the terminal portion 513 is attached to the second casing 512 so that the protruding portion and the wide portion 5131 overlap. It is done.
Such a second housing 512 has a substantially octagonal opening 5122 that opens in the + N direction, and an end on the −N direction side of the reflector 562 that constitutes the light source 56 is in the opening 5122. And a light shielding member 58 formed in a hollow, substantially octagonal column shape.
The light shielding member 58 is a metal member that suppresses deterioration of the inside of the second housing 512 due to ultraviolet rays and infrared rays that pass through the reflector 562 among the light emitted from the arc tube 561.

Screw holes 5123 are formed at the four corners of the end surface on the + N direction side of the second housing 512, that is, around the opening 5122. The screw SC1 inserted through the first housing 511 is screwed into these screw holes 5123, whereby the second housing 512 and the first housing 511 are combined to form the housing 51.
Cooling gas circulation ports 5124 and 5125 are respectively formed on the side surface on the + L direction side and the side surface on the −L direction side of the second housing 512. The cooling gas passing through the flow ports 5124 and 5125 passes through the flow ports formed on the side surface on the + L direction side and the side surface on the −L direction side of the light shielding member 58, and the reflector 562 in this flow process. The end surface on the −N direction side is cooled.

[Configuration of first housing]
The first housing 511 is located in the most + N direction in the light source device 5 and constitutes an emission-side housing 51A in combination with an intermediate member 53 to be described later, and is screwed into the second housing 512 from the + N direction side with a screw SC1. Fixed. That is, when the light source device 5 is attached to the light source attachment member 6, the first housing 511 is positioned on the light source attachment member 6 side (+ N direction side) with respect to the second housing 512, and The second housing is located on the side opposite to the light source mounting member 6 (−N direction side). The first housing 511 corresponds to the main body in the exit-side housing 51A.
As shown in FIG. 12, a substantially circular opening 5111 through which light emitted from the light source 56 accommodated in the housing 51 passes is formed on the surface 511F on the + N direction side of the first housing 511. Is formed. This surface 511F (surface 511F on the light emission side) is a portion that faces the mounting portion (for example, the mounting portion 6A2) and is covered by the mounting portion when the light source device 5 is mounted on the light source mounting member 6. It is.
In addition, the first housing 511 includes a concave storage portion 5112 that opens to the −N direction side. In the storage portion 5112, a light shielding member 52 described later is disposed. Further, the intermediate member 53 is attached so as to close the storage portion 5112 from the −N direction side.

On the surface 511U on the + M direction side of the first housing 511, inlets 5113 to 5116 for introducing the cooling gas delivered from the flow dividing member DM are formed according to the outlets DM71 to DM74. . The cooling gas introduced into the first housing 511 via these inlets 5113 to 5116 is supplied to the light source 56 via the intermediate member 53.
A discharge port 5117 (see FIG. 12) for discharging the cooling gas that has cooled the light source 56 is formed on the surface 511D on the −M direction side of the first housing 511. The discharge port 5117 is covered with the mesh MS. This mesh MS suppresses the fragments from scattering from the discharge port 5117 when the arc tube 561 is ruptured.

Protruding portions 5118 are provided in the vicinity of both ends in the + L direction of the surface 511U and in the vicinity of both ends in the + L direction of the surface 511D. Specifically, the protrusion 5118 positioned on the surface 511U protrudes toward the + M direction, and the protrusion 5118 positioned on the surface 511D protrudes toward the −M direction.
As shown in FIG. 5, these protrusions 5118 are located outside the second housing 512 when viewed from the −N direction side (+ X direction side in the example of FIG. 5). It is accessible from the -N direction side without being covered.
Each of these protrusions 5118 is formed with a hole 5119. Among the four holes 5119, the two holes 5119 are inserted with positioning protrusions of the boss 6A5, and the other two A screw SR (see FIGS. 11 and 12) is inserted through the hole 5119 along the + N direction from the −N direction side.
An insertion hole 511A into which the screw SC1 is inserted along the −N direction from the + N direction side is located at the corner of the surface 511F and at the center side of the first housing 511 with respect to each projection 5118. Each is formed.

[Configuration of light shielding member]
As described above, the light shielding member 52 is inserted into the storage portion 5112 from the −N direction side, and the intermediate member 53 closes the storage portion 5112 from the −N direction side.
The light-shielding member 52 is a first member from the light passing through two openings provided to sandwich the opening 5345 among the light emitted from the arc tube 561 on the side surface of the air guide part 532 of the intermediate member 53 described later. It has a function of protecting the housing 511.

[Configuration of intermediate member]
FIGS. 13 and 14 are exploded perspective views of the intermediate member 53, the light source 56, and the fixing member 57 as viewed from the light emitting side (+ N direction side) and the opposite side (−N direction side) from the light emitting side. FIG. 15 is a view of the intermediate member 53 as viewed from the + N direction side.
The intermediate member 53 closes the storage portion 5112 in a state where a light source 56 and a fixing member 57 to be described later are attached, and constitutes an emission side casing 51A. As shown in FIGS. 13 to 15, the intermediate member 53 includes a main body portion 531 having a substantially square shape when viewed from the + N direction side, and a guide in which the approximate center of the main body portion 531 protrudes in a truncated cone shape in the + N direction. And a wind part 532.

When the intermediate member 53 is attached to the first housing 511, the air guide portion 532 is disposed in the storage portion 5112 and the cooling gas introduced into the first housing 511 is transferred to the air guide portion 532. And has a function of leading to the arc tube 561 (see FIG. 11) located inside the tube.
As shown in FIGS. 13 and 15, a substantially circular opening 533 is formed on the + N direction side of the air guide portion 532. As shown in FIGS. 11 and 12, the collimating lens 54 is fitted into the opening 533, and a pressing member 55 that presses the collimating lens 54 is fixed to the edge of the opening 533.

Further, as shown in FIGS. 13 and 15, five openings 534 (5341 to 5345) are formed on the side surface of the air guide portion 532.
The opening 5341 is located on the + M direction side on the side surface of the air guide portion 532. The opening 5341 allows the cooling gas introduced from the inlet 5113 to flow into the air guide 532 from the + M direction side.
The opening 5342 is located on the −N direction side with respect to the opening 5341. The opening 5342 allows the cooling gas introduced from the inlet 5115 to flow into the air guide part 532 from the + M direction side.
The opening 5343 is located on the + L direction side on the side surface of the air guide portion 532. The opening 5343 allows the cooling gas introduced from the inlet 5114 through a duct portion (not shown) formed by combining the air guide portion 532 and the first housing 511 to the + L direction side. The air is introduced into the air guide portion 532.
The opening 5344 is located on the −L direction side on the side surface of the air guide portion 532. Similarly, the opening 5344 receives the cooling gas introduced from the introduction port 5116 through another duct portion (not shown) formed by combining the air guide portion 532 and the light shielding member 52 − The air is introduced into the air guide portion 532 from the L direction side.
The opening 5345 is located on the −M direction side on the side surface of the air guide portion 532.

Among these openings 5341 to 5345, the cooling gas that has passed through the openings 5342 to 5344 is sent to the light emitting part 5611 of the arc tube 561 described later. On the other hand, the cooling gas that has passed through the opening 5341 is sent to the sealing portion 5613 of the arc tube 561.
Thereby, according to the attitude | position of the projector 1, cooling gas can be sent out from the at least one of the opening parts 5342-5344 to the upper part (refer FIG. 17) of the light emission part 5611 where temperature becomes highest among the site | parts of the arc tube 561. In addition, the cooling gas can be sent to the sealing portion 5613 regardless of the attitude of the projector 1. Accordingly, the light emitting portion 5611 can be efficiently cooled, and the connection portion between the electrode lead wire 5617 and the lead wire (not shown) of the sealing portion 5613 can be reliably cooled. The cooling gas that has cooled the arc tube 561 in this manner flows out in the −M direction through the opening 5345, the intermediate member 53, and the first housing 511 that function as an outlet.

Screws SC1 that are inserted into the insertion holes 511A along the −N direction from the + N direction side and screwed into the second casing 512 are respectively inserted into the four corners of the main body portion 531 (see FIGS. 11 and 12). A hole 535 through which is inserted is formed.
Further, on one polygonal line in the main body portion 531, between one corner and the air guide portion 532, and between the corner opposite to the corner and the air guide portion 532, A screw hole 536 is formed in which a screw SC2 for fixing a fixing member 57 to be described later to the intermediate member 53 is screwed. Further, a positioning portion 537 (FIG. 14) for positioning a fixing member 57 described later is provided on the −N direction side so as to sandwich each of the screw holes 536.

FIG. 16 is a view of the intermediate member 53 as viewed from the −N direction side.
As shown in FIGS. 14 and 16, an annular step portion 538 that is recessed inward is formed at the proximal end portion of the air guide portion 532 when the intermediate member 53 is viewed from the −N direction side. The opening edge of the reflector 562 constituting the light source 56 is fitted into the step portion 538.
In addition, on the surface on the −N direction side of the main body portion 531, around the air guide portion 532, four protruding portions 539 formed in a substantially rectangular shape are provided to protrude at equal intervals. Specifically, each protrusion 539 is formed at a position on the ± M direction side and ± L direction side with respect to the air guide portion 532. These protrusions 539 are portions that are inserted into the openings 574 of the fixing member 57 when the fixing member 57 described later is attached to the intermediate member 53.

[Configuration of light source]
The light source 56 emits light in the + N direction side and is pressed and fixed to the intermediate member 53 side by a fixing member 57 described later. The light source 56 includes an arc tube 561 and a reflector 562, as shown in FIGS.

[Configuration of arc tube]
FIG. 17 is a view showing a cross section of the light source 56 along the NM plane.
The arc tube 561 is a light source lamp that is lit by electric power supplied from the outside. As shown in FIG. 17, the light emitting tube 561 includes a light emitting portion 5611 that swells in a substantially spherical shape, and a pair of sealing portions 5612 and 5613 that extend from both ends of the light emitting portion 5611 in a direction away from each other. Have.

Inside the light emitting portion 5611, a discharge space S in which a pair of electrodes E made of tungsten is disposed is formed, and a light emitting substance is sealed in the discharge space S. The portion on the + N direction side (the side opposite to the reflector 562) in the light emitting unit 5611 is reflected by a sub-reflecting mirror 5618 that reflects light emitted from the light emitting unit 5611 to the + N direction side toward the reflector 562 as a main reflecting mirror. Covered.
The sealing portions 5612 and 5613 are sealed with metal foils 5614 and 5615 electrically connected to the electrode E inserted therein. Electrode lead wires 5616 and 5617 extending to the outside of the arc tube 561 are connected to the metal foils 5614 and 5615, respectively, and electric power is supplied to the electrode lead wires 5616 and 5617 via lead wires (not shown). Then, the inside of the light emitting unit 5611 emits light.

[Structure of reflector]
The reflector 562 is a cold mirror that reflects visible light in the + N direction side and transmits infrared rays and ultraviolet rays out of light incident from the light emitting unit 5611 and the sub-reflecting mirror 5618, and has a concave curved reflecting surface 562A. . The reflector 562 is a circular reflector having an opening edge formed in a substantially circular shape when viewed from the + N direction side, and an end portion on the −N direction side formed in a substantially hemispherical shape. As shown in FIG. 17, such a reflector 562 is fixed to the sealing portion 5612 located on the −N direction side with respect to the light emitting portion 5611 with an adhesive.

FIG. 18 is a diagram of the reflector 562 viewed from the −N direction side.
An annular portion 5621 that protrudes outward in a flange shape is formed on the opening edge of the reflector 562. As shown in FIG. 18, the annular portion 5621 is formed in a substantially circular shape when viewed from the −N direction side. The annular portion 5621 is fitted into the stepped portion 538 of the intermediate member 53 and is fixed by a fixing member 57 described later. The part to be pressed.
In addition, on the surface on the −N direction side of the annular portion 5621, two protruding portions 5622 protruding on the −N direction side are formed. More specifically, when the reflector 562 is viewed from the −N direction side, the two convex portions 5622 are respectively provided at positions 90 ° apart from the arrangement position of the arc tube 561.

[Configuration of fixing member]
FIG. 19 is a view of the fixing member 57 as seen from the −N direction side.
The fixing member 57 is fixed to the intermediate member 53 with the screw SC2 while pressing the reflector 562 against the intermediate member 53. As shown in FIGS. 13, 14, and 19, the fixing member 57 is formed by bending a sheet metal, and has a substantially square shape when viewed from the −N direction side.
Such a fixing member 57 has an opening 571, a recess 572, a pressing part 573, an opening 574, an expansion / contraction part 575, a positioning hole 576, an insertion hole 577, and a flexible part 578.

  The opening 571 is formed in a substantially circular shape at the approximate center of the fixing member 57. A part of the reflector 562 on the −N direction side is inserted into the opening 571. Note that the inner diameter dimension of the opening 571 is set smaller than the outer diameter dimension of the reflector 562. For this reason, when a part of the reflector 562 on the −N direction side is inserted into the opening 571, the annular portion 5621 is brought into contact with the edge of the opening 571.

  The recess 572 is formed at a position corresponding to two of the four corners of the fixing member 57 at the edge of the opening 571. Specifically, the two recesses 572 are formed at positions 90 degrees apart from each other when the center of the opening 571 is the center. In other words, of the two concave portions 572, the first concave portion 5721 is formed at a position corresponding to the corner on the + M direction side on the + L direction side of the edge of the opening 571. Of the end edge of the opening 571, it is formed at a position corresponding to the corner on the + M direction side on the + L direction side. In the recesses 5721 and 5722, when the reflector 562 is inserted into the opening 571, the protrusion 5622 is fitted. Thereby, it is suppressed that the circular reflector 562 rotates around the rotation axis along the + N direction in a state where the circular reflector 562 is engaged with the fixing member 57.

  The pressing portion 573 is a biasing portion (plate spring portion) that presses and biases the reflector 562 inserted into the opening 571 toward the edge of the opening 571 and restricts the swinging of the reflector 562. is there. The pressing portion 573 is disposed at a position opposite to the second recessed portion 5722 (a position on the −L direction side and an M direction side) on the edge of the opening 571. Such a pressing portion 573 presses and biases the reflector 562 toward the second recess 5722.

  The opening 574 is formed substantially at the center of each edge of the fixing member 57 when viewed from the −N direction side. The protrusions 539 of the intermediate member 53 are inserted into these four openings 574. That is, the opening 574 is an inserted portion into which the protruding portion 539 is inserted.

The expansion / contraction part 575 is located on each edge of the fixing member 57 and extends in the −N direction side. A part of these expansion / contraction portions 575 form an outer edge (outside the center of the fixing member 57) of the opening 574. For this reason, when the expansion / contraction portion 575 is bent toward the center side of the fixing member 57 (when the expansion portion 575 is rotated toward the center side around the edge), the diameter of the opening 574 is increased. Moreover, if the expansion / contraction part 575 returns to the original state in a state where the opening part 574 has been enlarged, the opening part 574 is reduced in diameter.
Thus, the protrusion 539 is inserted into the opening 574 in a state where the expansion / contraction part 575 is operated and the opening 574 is expanded in diameter. Then, in a state where the corresponding protrusions 539 are inserted into the respective openings 574, when the positions of the expansion / contraction portions 575 are returned to their original positions by releasing hands, the diameter of the openings 574 is reduced, and the corresponding openings 574 Each protrusion 539 is clamped by the edge. Thereby, the fixing member 57 is temporarily fixed to the intermediate member 53.
Each of these four expanding / contracting portions 575 has a tip portion inclined toward the center, so that the gripped expanding / contracting portion 575 is easily bent. These expansion / contraction portions 575 also function as a shielding portion that shields the ultraviolet rays and infrared rays that have passed through the reflector 562.

  The positioning hole 576 is formed at a position corresponding to the positioning portion 537 of the intermediate member 53. Positioning portions 537 are inserted into the positioning holes 576, whereby the fixing member 57 is positioned on the intermediate member 53.

The insertion hole 577 and the pair of flexible portions 578 are respectively formed by notches in the vicinity of two corners located on the same diagonal line in the fixing member 57.
Among these, in the insertion hole 577, the screw SC2 for fixing the fixing member 57 to the intermediate member 53 is inserted from the −N direction side.
The pair of flexible portions 578 form the edge of the insertion hole 577 by a part of the edge portions facing each other. The pair of flexible portions 578 has flexibility in the ± N directions centering on the end portion opposite to the insertion hole 577, that is, the connection portion with the fixing member 57. For this reason, even when the position of the insertion hole 577 through which the screw SC2 is inserted and the position of the screw hole 536 into which the screw SC2 is screwed in the intermediate member 53 are shifted due to the crossing of the dimensions of the parts, the pair of flexible portions By bending 578, the position of the insertion hole 577 can be adjusted, so that the position of the insertion hole 577 and the position of the screw hole 536 can be matched.

[Attachment of light source and fixing member to intermediate member]
FIG. 20 is a view of the intermediate member 53 to which the light source 56 and the fixing member 57 are attached as viewed from the −N direction side.
When the light source 56 is fixed to the intermediate member 53 by the fixing member 57, the following procedure is used.
First, a part of the reflector 562 is inserted into the opening 571 of the fixing member 57, and the two convex portions 5622 of the reflector 562 are fitted into the concave portion 572 of the fixing member 57. In this state, the opening edge of the reflector 562 is fitted into the stepped portion 538 of the intermediate member 53 and the positioning portion 537 is inserted into the positioning hole 576 so that the fixing member 57 is attached to the intermediate member 53 from the −N direction side. .

FIG. 21 is a view of the intermediate member 53 to which the light source 56 and the fixing member 57 are attached as viewed from the + N direction side. In FIG. 21, the collimating lens 54 and the pressing member 55 fixed to the intermediate member 53 are not shown.
At this time, the protruding portion 539 is inserted into the opening 574 in a state where the expansion / contraction portion 575 of the fixing member 57 is bent to enlarge the diameter of the opening 574. Then, the diameter of the opening 574 is reduced by returning the expansion / contraction part 575 to the original, and the protruding part 539 is sandwiched by the edge of the opening 574. Thereby, the fixing member 57 and the light source 56 are temporarily fixed to the intermediate member 53.
Thereafter, the two screws SC <b> 2 are inserted into the corresponding insertion holes 577 from the −N direction side, and further screwed into the screw holes 536 formed in the intermediate member 53. Thereby, as shown in FIGS. 20 and 21, the fixing member 57 and the light source 56 are fixed to the intermediate member 53.

[Assembly of light source device]
When assembling the light source device 5, for example, as shown in FIG. 11, the first housing 511 (the emission-side housing 51 </ b> A) in which the storage portion 5112 in which the light shielding member 52 is disposed is closed by the intermediate member 53. The second casing 512 (base end casing 51B) to which the light shielding member 58 and the terminal portion 513 are attached is fixed with the screw SC1. At this time, the screw SC1 is inserted along the −N direction into the insertion hole 511A of the first housing 511 from the + N direction side, and is screwed into the screw hole 5123 of the second housing 512.
Thereby, the light source device 5 is assembled.

[Attaching the light source device to the light source attaching member]
The light source device 5 is attached to the light source attachment member 6 as described above.
For example, as shown in FIGS. 5 and 6, the light source devices 5A and 5B are attached to the attachment portion 6A2 of the light source attachment member 6A along the −X direction. The light source devices 5A and 5B are configured such that a screw SR (see FIGS. 11 and 12) inserted through the hole 5119 formed in the projecting portion 5118 along the −X direction protrudes from the mounting portion 6A2. It is fixed to the mounting portion 6A2 by being screwed into a screw hole (not shown) of 6A6.
Similarly, when the light source devices 5C and 5D are fixed to the attachment portion of the light source attachment member 6B, the light source devices 5C and 5D are attached and fixed to the attachment portion along the + X direction.

That is, the light source devices 5A and 5B are fixed to the light source mounting member 6A by screws SR inserted along the + N direction for the light source devices 5A and 5B, and the light source devices 5C and 5D are connected to the light source devices 5C and 5D. Are fixed to the light source mounting member 6B by screws SR inserted along the + N direction.
Thus, the insertion direction of the screw SR that fixes the light source device 5 to the light source mounting member 6 and the insertion direction of the screw SC1 that fixes the first housing 511 and the second housing 512 are opposite to each other, and the light source The insertion side of the screw SR with respect to the device 5 and the insertion side of the screw SC1 are opposite to each other. In other words, the extraction direction of the screw SR from the light source device 5 and the extraction direction of the screw SC1 from the light source device 5 are opposite to each other. The surface 511F on which the screw SC1 is disposed is covered with the light source mounting member 6. For this reason, when the light source device 5 is viewed from the mounting side of the light source device 5 with respect to the light source mounting member 6, that is, the extraction side of the screw SR, the screw SC1 is not visually recognized.
Thereby, when removing the light source device 5 from the light source attachment member 6, the screw SC1 is mistakenly removed, and the first case 511 is fixed to the light source attachment member 6 while the first case 511 is fixed. It can suppress that the housing | casing 512 isolate | separates.

The projector 1 according to the present embodiment described above has the following effects.
The extraction direction of the screw SR as the first fixing tool for fixing the light source device 5 to the light source mounting member 6 as the mounted member, and the second fixing tool for fixing the first casing 511 and the second casing 512 to each other. This is different from the direction of extraction of the screw SC1. According to this, in the example of the light source device 5 (5A, 5B) for the light source attachment member 6A, as shown in FIG. 5, when the light source device 5 is viewed from the extraction direction side (+ X direction side) of the screw SR, It is possible to make it difficult to visually recognize the screw SC1. The same applies to the light source devices 5C and 5D for the light source mounting member 6B. Therefore, when removing the light source device 5 from the light source attachment member 6 by extracting the screw SR, it is possible to prevent the screw SC1 from being accidentally extracted, and the light source device 5 can be appropriately removed from the light source attachment member 6.

  The screw SR is inserted into the light source device 5 and the light source mounting member 6 along the direction (+ N direction) in which the light source mounting member 6 is located with respect to the light source device 5, and the screw SC1 is the insertion direction of the screw SR. It is inserted into the first casing 511 and the second casing 512 along the opposite direction (−N direction). According to this, as described above, when the light source device 5 is viewed from the extraction direction side (−N direction side) of the screw SR, the screw SC1 can be more difficult to visually recognize. Thereby, when removing the light source device 5 from the light source attachment member 6, it can suppress reliably that screw SC1 is extracted. Therefore, the light source device 5 can be appropriately removed from the light source mounting member 6.

  The first casing 511 (light emitting side casing 51A) is located on the light source mounting member 6 side in the housing 51, and the second casing 512 (base end side casing 51B) is the light source mounting member 6 in the housing 51. Located on the opposite side. The screw SR is inserted into the boss of the light source mounting member 6 from the second housing 512 side (the boss 6A6 in the light source mounting member 6A), and the screw SC1 is connected from the first housing 511 side to the second housing 512. Inserted. According to this, each insertion direction of screw SR, SC1 can be made into a mutually opposite direction reliably. In other words, the extraction directions of the screws SR and SC1 can be surely opposite to each other. Therefore, when the screw SR is extracted, the screw SC1 can be more difficult to be visually recognized, and the screw SC1 can be reliably prevented from being extracted.

  The first housing 511 has an insertion hole 511 </ b> A into which the screw SC <b> 1 is inserted in a surface 511 </ b> F that faces the light source attachment member 6. When the light source device 5 is attached to the light source attachment member 6, the surface 511 </ b> F and the screw SC <b> 1 inserted into the insertion hole 511 </ b> A are covered with the light source attachment member 6. According to this, when removing the light source device 5 from the light source attachment member 6, it can suppress more reliably that the screw SC1 is visually recognized. Therefore, it is possible to more reliably suppress the screw SC1 from being removed when the light source device 5 is removed, and the light source device 5 can be appropriately removed from the light source mounting member 6.

Here, in the case where the hole through which the screw SR fixed to the light source mounting member 6 is inserted is located in the second housing 512 away from the light source mounting member 6, between the hole and the light source mounting member 6. The dimension of becomes longer. In such a case, it is not only necessary to employ a relatively long screw SR, but it is difficult to stabilize the light source device 5 to the light source mounting member 6.
On the other hand, since the hole 5119 through which the screw SC1 inserted from the second housing 512 side and fixed to the light source mounting member 6 is inserted is located in the first housing 511, compared to the above case, The dimension between the hole 5119 and the light source mounting member 6 can be shortened. Accordingly, a relatively short screw SR can be employed, and the light source device 5 can be stably fixed to the light source mounting member 6.

  The first housing 511 is from the attachment side of the light source device 5 with respect to the light source attachment member 6 (−N direction side, the + X direction side in the light source devices 5A and 5B, and the −X direction side in the light source devices 5C and 5D). It has a protruding portion 5118 that protrudes outward from the second housing 512 when viewed. The hole 5119 through which the screw SR is inserted is located in the protruding portion 5118. According to this, on the attachment side of the light source device 5 with respect to the light source attachment member 6, the screw SR can be easily inserted into and removed from the hole 5119, and as a result, the screw SR can be easily inserted into and removed from the light source attachment member 6. Therefore, the light source device 5 can be easily attached to and detached from the light source mounting member 6.

  The first housing 511 is positioned on the + N direction side (light emission side) of the light source device 5 with respect to the second housing 512. According to this, the light source device 5 is arranged so that the first housing 511 located on the light emitting side of the light source device 5 faces the light source mounting member 6. The light emission position can be easily adjusted. Therefore, the traveling direction of the light emitted from the illumination device 31 can be adjusted easily and appropriately.

The illuminating device 31 changes the light path of the light emitted from each of the light source devices 5A to 5D, the light source mounting member 6A to which the light source devices 5A and 5B are attached, the light source attachment member 6B to which the light source devices 5C and 5D are attached. And an optical path changing device 7 for emitting light. According to this, the light emitted from the light source devices 5A to 5D can be emitted in the + Z direction by the optical path changing device 7. Therefore, the light emitted from each of the light source devices 5A to 5D can be easily used effectively, and the brightness of the projected image can be increased.
Even when the illumination device 31 has one light source attachment member 6 to which a plurality of light source devices 5 can be attached, or when there is only one light source device 5 provided in each light source attachment member 6, the above optical path changing device. 7, the light emitted from each light source device 5 can be emitted in the + Z direction. Therefore, even in these configurations, the above effects can be achieved.

  The fixing member 57 is attached to the intermediate member 53 constituting the emission side casing 51A in a state where the reflector 562 is fixed. According to this, the reflector 562 can be easily attached to the intermediate member 53. Accordingly, since a round reflector can be adopted as the reflector 562, it is easier to collect and unidirectionally reflect the reflected light and to make the reflector 562 uniform in thickness than when a square reflector is adopted. Therefore, the utilization efficiency of the light emitted from the light emitting unit 5611 can be improved, and the ease of manufacturing the light source device 5 can be improved.

  The reflector 562 has a convex portion 5622 that protrudes outward. In addition, the fixing member 57 includes an opening 571 into which a part of the reflector 562 is inserted, and a recess 572 that is located at an edge of the opening 571 and into which the protrusion 5622 is fitted. According to this, when the end portion on the −N direction side of the reflector 562 is inserted into the opening portion 571 from the + N direction side, the convex portion 5622 fits into the concave portion 572, so that the axis along the + N direction is centered. The rotation of the reflector 562 can be suppressed. Therefore, the reflector 562 can be stably attached to the intermediate member 53.

  The fixing member 57 has a pressing portion 573 that presses the reflector 562 on the concave portion 572 side into which the convex portion 5622 is fitted. According to this, swinging and rotation of the reflector 562 can be reliably suppressed. Therefore, the reflector 562 can be fixed more stably.

  The intermediate member 53 constituting the emission side casing 51A has a protruding portion 539 protruding toward the fixing member 57, and the fixing member 57 has an opening 574 that is an insertion portion into which the protruding portion 539 is inserted. . According to this, the fixing member 57 in a state where the reflector 562 is fixed can be accurately positioned on the intermediate member 53. Therefore, the fixing member 57 and thus the reflector 562 can be attached to an appropriate position of the intermediate member 53 (outgoing side casing 51A).

  The fixing member 57 includes an expansion / contraction portion 575 that expands / contracts the inner diameter of the opening 574 and clamps the protruding portion 539 by the edge of the opening 574. According to this, since the protruding portion 539 can be sandwiched by the edge of the opening 574 that is expanded or contracted by the expanding / contracting portion 575, the fixing member 57 can be temporarily fixed to the intermediate member 53. Accordingly, the fixing member 57 and thus the reflector 562 can be more reliably attached to an appropriate position of the intermediate member 53 (outgoing side casing 51A), and the reflector 562 to the intermediate member 53 (outgoing side casing 51A) and The attachment process of the fixing member 57 can be easily performed.

  The expansion / contraction part 575 extends to the opposite side of the intermediate member 53 in the fixing member 57. When the expansion / contraction portion 575 is displaced toward the center side of the fixing member 57 (center side of the opening portion 571), the opening portion 574 is expanded in diameter, and the expansion / contraction portion 575 is opposite to the center of the fixing member 57 (outside). ), The opening 574 is reduced in diameter. According to this, the opening 574 can be easily expanded and contracted, and the operation of inserting the protruding portion 539 into the opening 574 and the operation of holding the protruding portion 539 inserted into the opening 574 are easily performed. Can be implemented. Therefore, the fixing member 57 can be easily temporarily fixed to the intermediate member 53.

  The fixing member 57 is formed by inserting an insertion hole 577 through which a screw SC2 as a fixing tool for fixing the fixing member 57 to the intermediate member 53 is inserted, and a notch that is continuous with the insertion hole 577. And a flexible portion 578 that forms an end edge. According to this, even when there is a tolerance in at least one of the component dimensions of the fixing member 57 and the intermediate member 53, the position of the insertion hole 577 is adjusted to the position of the screw hole 546 by bending the flexible portion 578. Can absorb the tolerance. Therefore, the fixing member 57 can be securely attached to the intermediate member 53.

  The emission side casing 51A includes a first casing 511 as a main body combined with the second casing 512 of the base end casing 51B, and an intermediate member 53 to which the light source 56 and the fixing member 57 are attached. The intermediate member 53 is disposed inside the first housing 511 and has an air guide portion 532 that guides cooling gas to the light emitting portion 5611 of the arc tube 561. And the said wind guide part 532 has the level | step-difference part 538 by which the opening edge of the reflector 562 is fitted. According to this, the leakage of the cooling gas guided by the air guiding unit 532 can be suppressed, and the cooling gas can be efficiently guided to the light emitting unit 5611. Accordingly, the cooling efficiency of the light emitting unit 5611 can be increased.

[Modification of Embodiment]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the above embodiment, the light source device 5 is attached to the light source attachment member 6 that is inserted into and extracted from the exterior housing 2. However, the present invention is not limited to this. That is, the attached member to which the light source device 5 is attached may be a light source attaching member (light source housing member) fixed in the exterior housing 2. Moreover, the light source attachment member 6 does not need to be configured such that the plurality of light source devices 5 are detachable, and the number of light source devices 5 that can be attached to the light source attachment member 6 is not limited. Furthermore, two light source attachment members 6 may not be provided in the projector 1 and may be one or three or more.

  In the above embodiment, the screw SR is employed as a fixture for fixing the light source device 5 to the light source mounting member 6, and the first housing 511 and the second housing 512 constituting the housing 51 of the light source device 5 are fixed. A screw SC1 was used as a tool. Furthermore, a screw SC2 is employed as a fixture for fixing the fixing member 57 to the intermediate member 53. However, the present invention is not limited to this. That is, these fasteners may be other fastening members such as bolts.

  In the above embodiment, the screw SR is inserted through the hole 5119 of the light source device 5 along the + N direction and screwed into the mounting portion of the light source mounting member 6, and the screw SC1 is the insertion hole of the first housing 511. 511 </ b> A is inserted in the −N direction and is screwed into the screw hole 5123 of the second housing 512. However, the present invention is not limited to this. That is, the insertion direction (extraction direction) of the fixing tool to the light source mounting member 6 and the insertion direction (extraction direction) of the fixing tool to the housing 51 are not limited to the opposite directions, but may be different. For example, the insertion direction (sampling direction) of these fixtures may be orthogonal.

  In the above embodiment, the first housing 511 has the insertion hole 511A through which the screw SC1 is inserted in the surface 511F covered by the light source mounting member 6 when the light source device 5 is mounted on the light source mounting member 6. Then. However, the present invention is not limited to this. That is, the surface 511F on which the insertion hole 511A is formed may not be covered by the light source mounting member 6, and the insertion hole 511A may be located on another surface.

  In the above embodiment, the first housing 511 has the hole 5119 through which the screw SR for fixing the light source device 5 to the light source mounting member 6 is inserted, and the second housing 512 has such a hole. I didn't. However, the present invention is not limited to this. That is, the hole through which the screw SR is inserted may be formed only in the second housing 512 or may be formed in each of the first housing 511 and the second housing 512.

  In the above embodiment, the protrusion 5118 in which the hole 5119 is formed in the first housing 511 protrudes in the + M direction and the −M direction from the second housing 512 when viewed from the −N direction side. However, the present invention is not limited to this. For example, the protrusion 5118 may protrude in at least one of the + L direction side and the −L direction side, and the portion where the hole 5119 is formed in the first housing 511 is larger than the second housing 512. It may be formed. Alternatively, the hole 5119 may be formed at a position covered by the second housing 512.

  In the above embodiment, the light source device 5 is attached to the light source attachment member 6 so that the first housing 511 is disposed on the light source attachment member 6 side with respect to the second housing 512. However, the present invention is not limited to this. For example, the light source device may be attached to the light source attachment member such that the second housing is located closer to the light source attachment member than the first housing. That is, for example, in the example shown in FIG. 5, the light source device 5 (5A, 5B) may be attached to the light source attachment member 6A so that the light emission direction is the + X direction. In this case, the extraction direction of the fixture (screw SR) that fixes the light source device 5 to the light source mounting member 6 is the direction along the + X direction (+ N direction), and the first casing 511 and the second casing 512 are fixed. What is necessary is just to comprise so that the extraction direction of a tool (screw SC1) may become a direction in alignment with -X direction (-N direction).

  In the said embodiment, the illuminating device 31 was set as the structure which has the optical path change apparatus 7 which aligns and radiate | emits the light radiate | emitted from the several light source device 5 (5A-5D) in + Z direction. However, the present invention is not limited to this, and there may be no optical path changing device, and the configuration of the optical path changing device is not limited to the configuration of the optical path changing device 7.

In the above embodiment, the light source 56 (reflector 562) is attached and fixed to the intermediate member 53 constituting the emission side casing 51A by the fixing member 57. However, the present invention is not limited to this. For example, the light source 56 (reflector 562) may be attached and fixed to the first housing 511 by the fixing member 57. In other words, any member to which the reflector 562 is attached can be used as long as the reflector 562 is attached and fixed to the emission side housing located on the emission direction side of the light reflected by the reflector 562 by the fixing member.
Further, the housing 51 is configured by combining the emission side casing 51A and the base end side casing 51B. However, the present invention is not limited to this, and the base end side casing 51B may be omitted.

  In the above embodiment, the reflector 562 has two convex portions 5622, and the fixing member 57 into which the reflector 562 is inserted into the opening 571 has the two convex portions 5622 at the edge of the opening 571. It was assumed that there were two recesses 572 to be fitted. However, the present invention is not limited to this. That is, the number of convex portions 5622 is not limited to two, and the number of concave portions 572 into which the convex portions 5622 are inserted is not limited to two. For example, the reflector 562 may have a configuration having one convex portion 5622, and the fixing member 57 may have a configuration having one concave portion 572. Moreover, the structure which a fixing member has a convex part and a reflector has a recessed part may be sufficient. Furthermore, if the rotation of the reflector 562 is suppressed by another configuration (for example, the pressing portion 573), these convex portions and concave portions may be omitted.

  In the above-described embodiment, the fixing member 57 has the pressing portion 573 that presses and biases the reflector 562 on the side of the concave portion 572 into which the convex portion 5622 fits at the edge of the opening 571. However, the present invention is not limited to this. For example, the position of the pressing portion 573 is not limited to the edge of the opening 571, and may be another portion. Further, the pressing direction of the reflector 562 by the pressing portion 573 may be another direction, for example, the concave portion 572 located on the + L direction side and the + M direction side, or the + L direction side, the + M direction side, or the −M direction side. Good. In these directions, the swing of the reflector 562 is restricted while the state where the convex portion 5622 is fitted in the concave portion 572 is maintained.

In the above embodiment, the four protrusions 539 formed with the intermediate member 53 are inserted into the corresponding openings 574 in the fixing member 57, and the protrusions 539 are sandwiched by the edges of the openings 574, The fixing member 57 is temporarily fixed to the intermediate member 53. However, the present invention is not limited to this. For example, the number of the protrusions 539 and the openings 574, and further the expansion / contraction portions 575 are not limited to four, and can be changed as appropriate, and the arrangement positions thereof can also be changed as appropriate. If at least one pair of the protruding portion 539, the opening 574, and the expansion / contraction portion 575 is provided at a position sandwiching the center of the opening 571, temporary fixing of the fixing member 57 is stable.
Further, when the protrusion 539 and the opening 574 are used for positioning the fixing member 57 with respect to the intermediate member 53, the protrusion 539 may not be sandwiched between the edges of the opening 574. In this case, the expansion / contraction part 575 can be omitted.

  In the above-described embodiment, the fixing member 57 is formed with the insertion hole 577 through which the screw SC <b> 2 that is screwed to the intermediate member 53 and fixes the fixing member 57 to the intermediate member 53 is inserted, and the edge of the insertion hole 577. It is assumed that the pair of flexible portions 578 are formed by notches. However, the present invention is not limited to this. For example, the pair of flexible portions 578 may be omitted. Further, the inner diameter dimension of the insertion hole 577 may be increased within a range smaller than the outer diameter dimension of the head of the screw SC2, thereby absorbing the tolerance of the component dimensions.

  In the above embodiment, the step portion 538 into which the opening edge of the reflector 562 is fitted is formed inside the air guide portion 532 in the intermediate member 53. However, the present invention is not limited to this. For example, such a step portion 538 may not be provided.

  In the above embodiment, the light source 56 has the arc tube 561 and the reflector 562. However, the present invention is not limited to this. For example, a solid light source such as an LED (Light Emitting Diode) and an LD (Laser Diode) may be employed instead of the arc tube 561. The extraction direction of the screw SR that fixes the light source device 5 to the light source mounting member 6 and the extraction direction of the screw SC1 that fixes the first housing 511 and the second housing 512 that constitute the housing 51 of the light source device 5 are defined. With respect to the difference, the reflector 562 may be a square reflector rather than a circular reflector.

In the above embodiment, the transmissive liquid crystal panel 341 (341R, 341G, 341B) is used as the light modulation device. However, the present invention is not limited to this. For example, a reflective liquid crystal panel may be employed as the light modulation device. In this case, the functions of the color separation device 33 and the color synthesis device 344 may be performed by one prism.
Further, as the light modulation device, a device using a micromirror, for example, a light modulation device other than liquid crystal such as DMD (Digital Micromirror Device) can be adopted.

In the above embodiment, the projector 1 is configured to include the three liquid crystal panels 341. However, the present invention is not limited to this. That is, the present invention can also be applied to a projector having two or less or four or more liquid crystal panels.
In the embodiment described above, the arrangement of the optical components constituting the image forming apparatus 3 is the arrangement shown in FIG. However, the present invention is not limited to this. For example, an image forming apparatus configured in a substantially L shape, a substantially U shape, or the like may be employed, and the arrangement of the optical components constituting the image forming apparatus 3 and the type and number of the optical components can be changed as appropriate. It is.

  In the above embodiment, an example in which the light source device and the illumination device of the present invention are applied to the projector 1 has been described. However, the present invention is not limited to this. For example, the light source device and the lighting device of the present invention can be applied as a lighting device or a light source device for an automobile.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 31 ... Illuminating device, 5 (5A, 5B, 5C, 5D) ... Light source device, 51 ... Housing, 511 ... 1st housing | casing, 5118 ... Projection part, 5119 ... Hole part, 511A ... Insertion hole, 512 ... 2nd housing, 56 ... Light source, 6 (6A, 6B) ... Light source mounting member (attached member), 7 ... Optical path changing device, SR ... Screw (first fixing tool), SC1 ... Screw (second fixing tool) ).

Claims (9)

A light source device;
A mounted member to which the light source device is mounted;
A first fixture that is inserted into the light source device and the attached member and fixes the light source device and the attached member;
The light source device
A light source;
A housing that houses the light source therein,
The housing is
A first housing and a second housing which are combined with each other and house the light source therein;
A second fixture that is inserted into the first casing and the second casing and fixes the first casing and the second casing;
The lighting device according to claim 1, wherein the extraction direction of the first fixture relative to the light source device is different from the extraction direction of the second fixture. The lighting device according to claim 1.
The first fixture is inserted into the light source device and the attached member along a direction in which the attached member is positioned with respect to the light source device,
The lighting device, wherein the second fixture is inserted into the first casing and the second casing along a direction opposite to an insertion direction of the first fixture. The lighting device according to claim 2,
The first housing is located on the attached member side in the housing,
The second housing is located on the opposite side of the housing from the attached member;
The first fixture is inserted into the attached member from the second housing side,
The lighting device, wherein the second fixture is inserted into the second housing from the first housing side. The lighting device according to claim 3.
The first housing has an insertion hole into which the second fixing tool is inserted in a surface facing the attached member,
The lighting device, wherein the second fixture inserted into the insertion hole is covered with the attached member. In the illuminating device of Claim 3 or Claim 4,
The lighting device according to claim 1, wherein the first housing has a hole portion through which the first fixture inserted from the second housing side and fixed to the attached member is inserted. The lighting device according to claim 5.
The first casing has a protruding portion that protrudes outward from the second casing when viewed from the mounting side of the light source device with respect to the mounted member;
The hole device is located in the projecting portion. In the illuminating device as described in any one of Claims 1-6,
The lighting device according to claim 1, wherein the first housing is located on a light emission side of the light source device with respect to the second housing.   A projector comprising the illumination device according to any one of claims 1 to 7. The projector according to claim 8, wherein
The lighting device includes a plurality of the light source devices,
The projector includes an optical path changing device that changes an optical path of light emitted from the light source devices and emits the light.

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