Projector

Abstract

To provide a projector that can suppress complication and reduce size.SOLUTION: A projector comprises: an exterior housing having a first wall and a second wall opposite from each other in a first axis, a third wall and a fourth wall opposite from each other in a second axis, and a fifth wall and a sixth wall opposite from each other in a third axis; a speaker unit having a speaker housing and a first sound emitter provided in the speaker housing; and a fan provided inside the exterior housing. The first wall includes a communication port that causes an interior and an exterior of the exterior housing to communicate with each other to form a sound emission port of the first sound emitter. The fifth wall includes: a contact portion that comes into contact with an installation surface; a noncontact portion that is provided continuously with the first wall and does not come into contact with the installation surface; and an air intake port that is provided at the noncontact portion and has flow path resistance smaller than flow path resistance of the communication port. The speaker housing is disposed to oppose each of the communication port and the air intake port, and the fan communicates with the communication port and the air intake port and sucks air outside the exterior housing.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present disclosure relates to a projector. [Background technology]

[0002] 2. Description of the Related Art Projectors that cool an object to be cooled by outside air introduced into a housing are known in the art (see, for example, Patent Document 1). In the liquid crystal projector described in Patent Document 1, the LCD unit and polarizing plate unit, which are the objects to be cooled, are air-cooled by outside air taken in from a first outside air intake and an intake duct by a blower fan. A second outside air intake is provided in the intake duct, and when the first outside air intake is blocked, air inside the liquid crystal projector is drawn in through the second outside air intake. This creates a new air flow inside the liquid crystal projector, cooling the LCD unit and polarizing plate unit. Patent document 1 describes an example in which the second outside air intake is configured with a lid that opens inward, and when the first outside air intake is blocked, the lid opens automatically in response to a drop in air pressure inside the liquid crystal projector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-325982 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the liquid crystal projector described in Patent Document 1, the second outside air intake is an opening for taking in outside air in an emergency when the first outside air intake is blocked, and is not used under normal circumstances. In other words, in the liquid crystal projector described in Patent Document 1, it is necessary to provide a second outside air intake for taking in outside air in an emergency separately from the first outside air intake. Furthermore, if the second outside air intake port is configured by a cover that opens inward, the configuration of the second outside air intake port becomes even more complicated, which poses a problem of hindering miniaturization of the projector. For this reason, there has been a demand for preventing the configuration from becoming too complicated and for the device to be made more compact. [Means for solving the problem]

[0005] A projector according to a first aspect of the present disclosure includes an exterior housing having a first wall and a second wall provided on opposite sides of a first axis, a third wall and a fourth wall provided on opposite sides of a second axis perpendicular to the first axis, and a fifth wall and a sixth wall provided on opposite sides of a third axis perpendicular to each of the first axis and the second axis, a speaker housing, a speaker unit having a first sound emitting portion provided in the speaker housing, and a fan provided inside the exterior housing; The first wall has a communication opening that connects the inside and outside of the exterior housing and serves as a sound emission opening of the first sound emission section, the fifth wall has a contact portion that contacts the installation surface, a non-contact portion that is continuous with the first wall and does not contact the installation surface, and an air intake port that is provided in the non-contact portion and has a flow path resistance smaller than the flow path resistance of the communication opening, the speaker housing is positioned opposite each of the communication opening and the air intake port, and the fan communicates with the communication opening and the air intake port and draws in outside air from the exterior housing.

[0006] A projector according to a second aspect of the present disclosure includes an exterior housing having a first wall and a second wall provided on opposite sides of a first axis, a third wall and a fourth wall provided on opposite sides of a second axis perpendicular to the first axis, and a fifth wall and a sixth wall provided on opposite sides of a third axis perpendicular to each of the first axis and the second axis, a speaker housing, a speaker unit having a first sound emitting section provided in the speaker housing and a second sound emitting section capable of outputting sound in a higher frequency range than the first sound emitting section, a fan provided inside the exterior housing, and a sealing material provided inside the exterior housing, wherein the first wall is a the fifth wall has a contact portion that contacts the installation surface, a non-contact portion that is continuous with the first wall and does not contact the installation surface, and an intake port that is provided in the non-contact portion and has a flow path resistance smaller than the flow path resistance of the communication portion; the speaker housing is disposed opposite each of the first wall and the fifth wall; the fan communicates with the communication portion and the intake port and draws in outside air from the exterior housing; and the sealing material separates the first sound emitting portion and the second sound emitting portion, surrounds the first sound emitting portion, and forms a duct that communicates between the communication portion and the intake port and the fan. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing a projector according to a first embodiment. [Diagram 2] FIG. 1 is a perspective view showing a projector according to a first embodiment. [Diagram 3] FIG. 2 is a perspective view showing a fabric unit according to the first embodiment. [Figure 4] FIG. 2 is a perspective view showing a fabric unit according to the first embodiment. [Diagram 5] FIG. 1 is a cross-sectional view showing a projector according to a first embodiment. [Figure 6] FIG. 1 is a schematic diagram showing the configuration of a light source device according to a first embodiment. [Figure 7] FIG. 1 is a perspective view showing a projector in a state in which a fabric unit and a lower case are removed according to a first embodiment. [Figure 8] FIG. 1 is a perspective view showing a speaker unit according to a first embodiment. [Figure 9] FIG. 1 is a plan view showing a speaker unit according to a first embodiment. [Figure 10] FIG. 1 is a cross-sectional view showing a projector according to a first embodiment. [Figure 11] 4A and 4B are diagrams illustrating the flow of cooling gas introduced into the exterior housing through a first intake port according to the first embodiment. [Figure 12] 4A and 4B are diagrams illustrating the flow of cooling gas introduced into the exterior housing through a first intake port according to the first embodiment. [Figure 13] FIG. 11 is a schematic diagram showing the internal configuration of a projector according to a second embodiment. [Figure 14] FIG. 11 is a schematic diagram showing the internal configuration of a projector according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] [First embodiment] Hereinafter, a first embodiment of the present disclosure will be described with reference to the drawings. [Projector configuration] 1 and 2 are perspective views showing a projector 1 according to this embodiment. To be more specific, Fig. 1 is a perspective view showing the projector 1 as viewed from the upper front side, and Fig. 2 is a perspective view showing the projector 1 as viewed from the lower rear side. A projector 1 according to this embodiment projects image light corresponding to image information onto a projection surface. The projector 1 includes an exterior housing 2, as shown in FIGS. In the following description, the three mutually orthogonal directions are defined as the +X direction, the +Y direction, and the +Z direction. The +Y direction is a direction that stands perpendicular to the installation surface on which the projector 1 is installed. When the projector 1 is viewed from the +Y direction, the +Z direction is the direction in which the projector 1 projects image light. Although not shown in the figure, the direction opposite to the +X direction is the -X direction, the direction opposite to the +Y direction is the -Y direction, and the direction opposite to the +Z direction is the -Z direction. Although not shown in the figure, the axis along the +X direction is the X-axis, the axis along the +Y direction is the Y-axis, and the axis along the +Z direction is the Z-axis.

[0009] [Exterior casing configuration] 1 and 2, the exterior housing 2 is a housing that constitutes the exterior of the projector 1. The exterior housing 2 includes an upper case 2A that constitutes the +Y direction portion, a lower case 2B that constitutes the -Y direction portion, and a fabric unit 2C that constitutes each of the -Z direction, +X direction, and -X direction portions. The exterior housing 2 is configured into a substantially rectangular parallelepiped shape by combining the upper case 2A, the lower case 2B, and the fabric unit 2C. The exterior housing 2 has a front surface 21, a back surface 22, a right side surface 23, a left side surface 24, a top surface 25, a bottom surface 26, and an inclined surface 27. The front surface 21 is made up of a -Y direction portion of the upper case 2A and a +Y direction portion of the lower case 2B. The back surface 22, right side surface 23, and left side surface 24 are each made up of a -Y direction portion of the upper case 2A, a +Y direction portion of the lower case 2B, and the fabric unit 2C. The top surface 25 is made up of the upper case 2A, and the bottom surface 26 is made up of the lower case 2B.

[0010] [Front and rear configuration] The front surface 21 shown in Fig. 1 and the back surface 22 shown in Fig. 2 are surfaces that are opposite to each other in the Z axis. The front surface 21 corresponds to the second wall, and the back surface 22 corresponds to the first wall. 1, the front surface 21 is a side surface of the exterior housing 2 facing the +Z direction, and is continuous with the bottom surface 26. The front surface 21 is provided with a projection opening 211 through which image light to be projected onto a projection surface passes. 2, the rear surface 22 is a side surface facing the +Z direction in the exterior housing 2. The -Y direction portion of the rear surface 22 is formed by a fabric unit 2C that covers a speaker unit 6 (described later) in the -Z direction.

[0011] [Right and left side configuration] A right side surface 23 shown in Fig. 1 and a left side surface 24 shown in Fig. 2 are surfaces that are opposite each other with respect to the X-axis. One of the right side surface 23 and the left side surface 24 corresponds to the third wall, and the other corresponds to the fourth wall. 1, the right side surface 23 is a side surface facing the +X direction in the exterior housing 2. On the right side surface 23, a power button 231, connection terminals 232 to 235, and an inlet 236 are provided. 2, the left side surface 24 is a side surface facing the -X direction in the exterior housing 2. The left side surface 24 is provided with exhaust ports 241 and 242 for exhausting the cooling gas that has circulated inside the exterior housing 2.

[0012] [Fabric unit configuration] 3 and 4 are perspective views showing the fabric unit 2C as viewed from the inside of the exterior housing 2. More specifically, Fig. 3 is a perspective view showing the fabric unit 2C as viewed from the -X direction, the +Z direction, and the +Y direction, and Fig. 4 is a perspective view showing the fabric unit 2C as viewed from the +X direction, the +Z direction, and the -Y direction. Note that in Figs. 3 and 4, only some of the openings 2C2 among the multiple openings 2C2 constituting each of the communication opening 2CA1, the right sound output opening 2CR1, and the left sound output opening 2CL1 are labeled with reference numerals. The fabric unit 2C is disposed so as to straddle the rear surface 22, the right side surface 23 and the left side surface 24, as shown in FIGS. As shown in FIGS. 3 and 4, the fabric unit 2C is configured by combining a frame 2C1 and a fabric 2C3.

[0013] The frame 2C1 is formed in a substantially U-shape when viewed from the +Y direction. The frame 2C1 has a back portion 2CA constituting the -Y direction portion of the back surface 22 in the -Z direction, a right side portion 2CR constituting the -Y and -Z direction portions of the right side surface 23 in the +X direction, and a left side portion 2CL constituting the -Y and -Z direction portions of the left side surface 24 in the -X direction. The back surface portion 2CA has a communication opening 2CA1 which serves as a sound output port of a first sound output portion 62 which will be described later. The right side surface portion 2CR has a right sound emitting port 2CR1 which serves as a sound emitting port of a second sound emitting portion 63 which will be described later. The left side surface portion 2CL has a left sound emitting port 2CL1 which serves as a sound emitting port of a second sound emitting portion 64 which will be described later. Each of the communication opening 2CA1, the right sound output opening 2CR1, and the left sound output opening 2CL1 is configured with a plurality of openings 2C2 arranged vertically and horizontally, and communicates the inside and outside of the exterior housing 2. The flow resistance of the cooling gas through the communication opening 2CA1, the flow resistance of the cooling gas through the right sound output opening 2CR1, and the flow resistance of the cooling gas through the left sound output opening 2CL1 are all the same.

[0014] The fabric 2C3 made of a net is provided on the outer surface of the frame 2C1, that is, the fabric 2C3 covers the communication opening 2CA1, the right sound output opening 2CR1, and the left sound output opening 2CL1 on the outside of the frame 2C1. In this way, the fabric unit 2C constituting a part of each of the rear surface 22, the right side surface 23, and the left side surface 24 of the exterior housing 2 includes the communication port 2CA1, the right sound output port 2CR1, and the left sound output port 2CL1. Therefore, the exterior housing 2 to which the fabric unit 2C is attached includes the communication port 2CA1, the right sound output port 2CR1, and the left sound output port 2CL1.

[0015] [Top and bottom configuration] A top surface 25 shown in Fig. 1 and a bottom surface 26 shown in Fig. 2 are surfaces that are opposite each other with respect to the Y axis. The top surface 25 corresponds to the sixth wall, and the bottom surface 26 corresponds to the fifth wall. As shown in FIG. 1, the top surface 25 is a surface of the exterior housing 2 facing the +Y direction. 2, the bottom surface 26 is a surface of the exterior housing 2 facing the -Y direction. In other words, the bottom surface 26 is a surface facing the installation surface on which the projector 1 is placed, and is a portion of the exterior housing 2 that is visible from the -Y direction.

[0016] The bottom surface 26 has a protrusion 261 and a step 263 . The protruding portion 261 is a portion that protrudes in the -Y direction from approximately the center of the bottom surface 26, and is formed in a substantially rectangular shape when viewed from the -Y direction. The fixing leg portions 262 are provided at two corners in the -Z direction of the protruding portion 261. The fixing leg portion 262 is one of the contact portions that comes into contact with the installation surface.

[0017] The step portion 263 is a portion of the bottom surface 26 other than the protruding portion 261, and is a non-contact portion that does not contact the installation surface. Specifically, the step portion 263 is disposed in the +Y direction from the surface 261A on which the fixing leg portion 262 is provided in the protruding portion 261, and is separated from the installation surface in the +Y direction when the projector 1 is installed on the installation surface. The step portion 263 is provided with a first air intake port 264, a mesh 265, a second air intake port 266, a third air intake port 267, and an adjustment leg portion 268. That is, the exterior housing 2 is provided with the first air intake port 264 and the mesh 265.

[0018] The first air intake port 264 is disposed in the -Z direction with respect to the protruding portion 261. That is, the first air intake port 264 is provided at a position on the rear surface 22 side of the bottom surface 26. The first air intake port 264 is a plurality of openings arranged along the X axis. When a first fan 51 (described later) arranged in the exterior housing 2 is driven, the outside air of the exterior housing 2 is introduced into the interior of the exterior housing 2 through the first air intake port 264. Note that the portion of the step portion 263 where the first air intake port 264 is provided is provided continuously with the rear surface 22. The mesh 265 is provided inside the exterior housing 2 in correspondence with the first intake port 264, and collects dust contained in the outside air flowing through the first intake port 264. The mesh of the mesh 265 is coarser than the mesh of the fabric 2C3 of the fabric unit 2C. Therefore, the flow path resistance of the outside air passing through the first intake port 264 is smaller than the flow path resistance of the outside air passing through the communication port 2CA1.

[0019] The second air intake 266 is disposed in a portion of the bottom surface 26 that is in the +X direction and the +Z direction, and the third air intake 267 is disposed in a portion of the bottom surface 26 that is in the -X direction and the +Z direction. Although not shown in the figure, the second air intake 266 is provided with a sponge-like filter, and the third air intake 267 is provided with a mesh. The intake ports 264, 266, and 267 introduce the outside air of the exterior housing 2 as cooling gas into the interior of the exterior housing 2. The cooling gas introduced into the interior of the exterior housing 2 is circulated to the object to be cooled by fans 51, 54, and 55 of the cooling device 5, which will be described later. The cooling gas that has cooled the object to be cooled is discharged to the outside of the exterior housing 2 from the exhaust ports 241 and 242. Adjustable leg 268 is provided at a position on the X-axis between second air intake port 266 and third air intake port 267. Adjustable leg 268 is a leg whose protrusion amount from bottom surface 26 is adjustable, and is one of the contact parts that comes into contact with the installation surface.

[0020] [Inclined surface configuration] The inclined surface 27 is provided on the lower case 2B so as to span the front surface 21, the rear surface 22, the right side surface 23, the left side surface 24, and the bottom surface 26. The inclined surface 27 includes a front side inclined surface 27A, a rear side inclined surface 27B, a right side inclined surface 27C, and a left side inclined surface 27D. The front-side inclined surface 27A is composed of a -Y direction portion of the front surface 21 and a +Y direction portion of the bottom surface 26. The front-side inclined surface 27A spans the front surface 21 and the bottom surface 26, and is a surface that approaches the installation surface toward the back surface 22 opposite the front surface 21. In other words, the -Y direction portion of the front-side inclined surface 27A is inclined with respect to the front surface 21, and the +Y direction portion of the front-side inclined surface 27A is inclined with respect to the bottom surface 26.

[0021] The rear surface-side inclined surface 27B is constituted by a portion of the rear surface 22 in the −Y direction and a portion of the bottom surface 26 in the +Y direction. Right inclined surface 27C is constituted by a portion of right surface 23 in the −Y direction and a portion of bottom surface 26 in the +Y direction. Left inclined surface 27D is constituted by a portion of left side surface 24 in the −Y direction and a portion of bottom surface 26 in the +Y direction. The rear inclined surface 27B, the right inclined surface 27C, and the left inclined surface 27D are each inclined in the same manner as the front inclined surface 27A.

[0022] [Internal structure of the exterior housing] FIG. 5 is a diagram showing a cross section of the projector 1 along the XZ plane. In addition to the exterior housing 2, the projector 1 includes an image projection device 3, a communication device 4, and a cooling device 5 that are arranged in the +Y direction inside the exterior housing 2, as shown in FIG. In addition, although not shown, the projector 1 includes a control board that is disposed in the +Y direction with respect to the image projection device 3, the communication device 4, and the cooling device 5. The control board controls the operation of the projector 1.

[0023] [Configuration of image projection device] The image projection device 3 generates image light according to image information and projects the generated image light. The image projection device 3 is provided along the X-axis and Z-axis at approximately the center of the exterior housing 2. The image projection device 3 includes a light source device 31, a homogenization optical system 32, a color separation optical system 33, a relay optical system 34, an image forming device 35, an optical component housing 36, and a projection optical device 37. The light source device 31 is provided in the exterior housing 2 in the -X direction and at a position approximately in the center on the Z axis, and emits illumination light in the +X direction. The configuration of the light source device 31 will be described in detail later.

[0024] The homogenizing optical system 32 homogenizes the illumination light emitted from the light source device 31. The homogenized illumination light passes through a color separation optical system 33 and a relay optical system 34, and illuminates a light modulation region of a light modulation device 352 (described later). The homogenizing optical system 32 includes two lens arrays 321 and 322, a polarization conversion element 323, and a superimposing lens 324. The color separation optical system 33 separates the illumination light incident from the homogenization optical system 32 into red, green, and blue color lights. The color separation optical system 33 includes two dichroic mirrors 331 and 332, and a reflection mirror 333 that reflects the blue light separated by the dichroic mirror 331.

[0025] Relay optical system 34 is provided on the optical path of red light, which is longer than the optical paths of the other colored lights, to suppress loss of the red light. Relay optical system 34 includes an incident side lens 341, a relay lens 343, and reflecting mirrors 342 and 344. Note that the colored light having a longer optical path than the optical paths of the other colored lights may be blue light, and relay optical system 34 may be provided on the optical path of the blue light.

[0026] The image forming device 35 modulates the incident red, green, and blue color lights and combines the modulated color lights to form image light. That is, the image forming device 35 modulates the illumination light emitted from the light source device 31 to form image light. The image forming device 35 includes three field lenses 351, three light modulation devices 352, and one color combination unit 353, which are provided according to the incident color lights.

[0027] The three light modulation devices 352 modulate the illumination light emitted from the light source device 31 in accordance with image information. The three light modulation devices 352 include a light modulation device 352R that modulates red light, a light modulation device 352G that modulates green light, and a light modulation device 352B that modulates blue light. The light modulation device 352 can be configured, for example, by a liquid crystal panel and a pair of polarizing plates that sandwich the liquid crystal panel. The color synthesis unit 353 synthesizes the three color lights modulated by the light modulation devices 352B, 352G, and 352R to form image light, and outputs the formed image light to the projection optical device 37. In this embodiment, the color synthesis unit 353 is configured by a cross dichroic prism, but is not limited to this, and can also be configured by, for example, a plurality of dichroic mirrors.

[0028] The optical component housing 36 houses the homogenizing optics 32, the color separation optics 33, and the relay optics 34. The projection optical device 37 is a projection lens that enlarges and projects the image light incident from the image forming device 35 onto a projection surface. An example of the projection optical device 37 is a lens assembly having a plurality of lenses and a cylindrical lens barrel in which the plurality of lenses are housed.

[0029] [Light source configuration] FIG. 6 is a schematic diagram showing the configuration of the light source device 31. As shown in FIG. The light source device 31 emits illumination light WL in the +X direction toward the homogenization optical system 32. As shown in Fig. 6, the light source device 31 includes a light source 311, a first heat dissipation member 312, a diffuse transmission section 313, a light separation section 314, a first light collecting element 315, a wavelength conversion element 316, a second heat dissipation member 317, a second light collecting element 318, a diffuse reflection element 319, and a light source housing CA.

[0030] An optical axis Ax1 along the Z axis and an optical axis Ax2 along the X axis and perpendicular to the optical axis Ax1 are set in the light source device 31. The optical components of the light source device 31 are disposed on the optical axis Ax1 or the optical axis Ax2. Specifically, the light source 311, the diffuse transmission section 313, the light separation section 314, the first light collecting element 315, and the wavelength conversion element 316 are disposed on the optical axis Ax1. The diffuse reflecting element 319, the second light collecting element 318, and the light separating section 314 are disposed on the optical axis Ax2. That is, the light separating section 314 is disposed at the intersection of the optical axis Ax1 and the optical axis Ax2. The optical axis Ax 2 is connected to the optical axis of the image projection device 3 by the lens array 321 of the uniformizing optical system 32 .

[0031] [Light source housing configuration] The light source housing CA houses the light source 311, the diffuse transmission section 313, the light separation section 314, the first light collecting element 315, the wavelength conversion element 316, the second light collecting element 318, and the diffuse reflection element 319. In this embodiment, the light source housing CA is a sealed housing into which dust is unlikely to enter. However, the light source housing CA is not limited to this and may be any housing capable of housing the above-mentioned optical components.

[0032] [Light source configuration] The light source 311 emits light in the −Z direction. The light source 311 includes a light emitting element 3111 and a substrate 3112. The light emitting element 3111 emits blue light BL. The blue light BL is excitation light that excites the phosphor of the wavelength conversion element 316. The light emitting element 3111 is a semiconductor laser that emits laser light with a peak wavelength of 455 nm. The substrate 3112 is fixed to the light source housing CA while supporting the light emitting element 3111. The substrate 3112 receives heat from the light emitting element 3111 and transfers the received heat to the first heat dissipation member 312. That is, the substrate 3112 functions as a support substrate that supports the light emitting element 3111, as well as a heat receiving substrate that receives heat from the light emitting element 3111.

[0033] [Configuration of first heat dissipation member] The first heat dissipation member 312 is disposed in a third duct 56 of the cooling device 5, which will be described later, and dissipates heat transferred from the substrate 3112. The first heat dissipation member 312 transfers heat from the light emitting element 3111, transferred via the substrate 3112, to cooling gas circulating from a third fan 55, which will be described later, thereby cooling the light emitting element 3111.

[0034] [Configuration of diffuse transmission section] The diffuse transmission section 313 diffuses the blue light BL incident from the light source 311 and emits light with a uniform illuminance distribution. The blue light BL emitted from the diffuse transmission section 313 enters the light separation section 314. Examples of the diffuse transmission section 313 include a configuration having a hologram, a configuration in which a plurality of small lenses are arranged on a plane perpendicular to the optical axis, and a configuration in which the surface through which light passes is a rough surface. Note that a homogenizer optical element having a pair of multi-lens arrays may be used in the light source device 31 instead of the diffuse transmission section 313. On the other hand, when the diffuse transmission section 313 is used, the distance from the light source 311 to the light separation section 314 can be made shorter than when the homogenizer optical element is used.

[0035] [Structure of the light separation section] The light separating unit 314 has a function of a half mirror that transmits a part of the blue light BL incident from the light source 311 via the diffuse transmission unit 313 and reflects the other blue light BL. That is, the light separating unit 314 transmits a first partial light, which is a part of the blue light BL incident from the diffuse transmission unit 313, in the -Z direction to make it incident on the first light collecting element 315, and reflects a second partial light, which is the other blue light BL, in the -X direction to make it incident on the second light collecting element 318. The light separating unit 314 further functions as a dichroic mirror that reflects the fluorescence YL incident from the wavelength converting element 316 in the +Z direction and transmits the blue light BL incident from the diffuse reflecting element 319 in the +X direction.

[0036] [Configuration of the first light-collecting element] The first light collecting element 315 collects the first partial light transmitted through the light separating unit 314 onto the wavelength conversion element 316. In addition, the first light collecting element 315 collimates the fluorescence YL incident thereon from the wavelength conversion element 316.

[0037] [Configuration of wavelength conversion element] The wavelength conversion element 316 is a reflective wavelength conversion element that converts the wavelength of incident light, and diffuses the converted light in the opposite direction to the incident direction of the light. The wavelength conversion element 316 has a phosphor layer 3161 and a substrate 3162, and is fixed directly or indirectly to the light source housing CA. The phosphor layer 3161 contains a phosphor that is excited by the incidence of blue light BL, which is excitation light, and reflects fluorescence YL having a longer wavelength than the incident blue light BL. The light emitted from the phosphor layer 3161 is unpolarized fluorescence YL having a peak wavelength in the range of 500 to 700 nm, for example, and the fluorescence YL includes green light and red light. The substrate 3162 supports the phosphor layer 3161 and receives heat from the phosphor layer 3161. Although not shown, a reflective layer that reflects light incident from the phosphor layer 3161 is provided between the phosphor layer 3161 and the substrate 3162. The fluorescence YL emitted from the wavelength conversion element 316 passes through the first light collecting element 315 along the optical axis Ax1, and then enters the light separating unit 314. The fluorescence YL that enters the light separating unit 314 is reflected in the +X direction by the light separating unit 314, and is emitted to the outside of the light source device 31 along the optical axis Ax2.

[0038] [Configuration of the second heat dissipation member] The second heat dissipation member 317 is disposed in a second duct 53 described later, and dissipates heat transferred from the substrate 3162. The second heat dissipation member 317 transfers heat of the phosphor layer 3161 transferred via the substrate 3162 to a cooling gas circulating from a first fan 51 described later, thereby cooling the wavelength conversion element 316.

[0039] [Configuration of the second light-collecting element] The second light collecting element 318 collects the second partial light incident from the light separating section 314 onto the diffuse reflecting element 319. The second light collecting element 318 collimates the blue light incident from the diffuse reflecting element 319.

[0040] [Configuration of diffuse reflector elements] The diffuse reflecting element 319 is fixed to the inner surface of the light source housing CA. The diffuse reflecting element 319 reflects and diffuses the blue light BL incident from the second light collecting element 318 at a diffusion angle substantially the same as the diffusion angle of the fluorescence YL emitted from the wavelength conversion element 316 or at a diffusion angle slightly smaller than the diffusion angle of the fluorescence YL. In other words, the diffuse reflecting element 319 reflects and diffuses the incident light without converting the wavelength of the incident light. The blue light BL reflected in the +X direction by the diffuse reflecting element 319 passes through the second light collecting element 318, then passes through the light separating section 314 in the +X direction, and is emitted to the outside of the light source device 31 together with the fluorescent light YL. As described above, the illumination light WL emitted to the outside of the light source device 31 is white light that is a mixture of the blue light BL and the fluorescence YL that contains green light and red light.

[0041] [Communication device configuration] 5 is electrically connected to the control board and wirelessly communicates with an external device (not shown), such as a video output device. In more detail, the communication device 4 receives a video signal from the video output device and outputs the received video signal to the control device. The communication device 4 is configured in a rectangular parallelepiped shape, and is disposed inside the exterior housing 2 along the back surface 22 so that the longitudinal direction of the communication device 4 is along the X-axis. The communication device 4 is cooled by cooling gas circulated by a first fan 51, which will be described later.

[0042] [Cooling system configuration] The cooling device 5 cools a cooling target constituting the projector 1. The cooling device 5 includes a first fan 51, a first duct 52, a second duct 53, a second fan 54, a third fan 55, and a third duct 56. The first fan 51, the first duct 52, the second duct 53, the second fan 54, the third fan 55, and the third duct 56 are each provided inside the exterior housing 2.

[0043] [First fan configuration] The first fan 51 is a double-sided intake sirocco fan having intake sections 511 and 512 and a delivery section 513. The first fan 51 is disposed adjacent to the communication device 4 in the +Z direction relative to the communication device 4, such that the intake section 511 faces the -Z direction, the intake section 512 faces the +Z direction, and the delivery section 513 faces the -X direction. The first fan 51 circulates the cooling gas introduced into the exterior housing 2 to the first and second cooling targets, thereby cooling the respective cooling targets. Specifically, the first fan 51 sucks in the cooling gas flowing through the first duct 52, and circulates the cooling gas to the communication device 4 as the first cooling target and the second heat dissipation member 317 connected to the wavelength conversion element 316 as the second cooling target in a heat transferable manner, thereby cooling the communication device 4 and the wavelength conversion element 316. The cooling gas drawn in by the first fan 51 will be described in detail later.

[0044] [First duct configuration] The first duct 52 is an intake side duct of the first fan 51, and circulates the cooling gas introduced into the exterior housing 2 from the first intake port 264 or the communication port 2CA1 to the first fan 51. That is, the first duct 52 communicates the first fan 51 with the communication port 2CA1 and the first intake port 264, and the first fan 51 draws in outside air of the exterior housing 2 through the first duct 52. The first duct 52 is configured by the inner surface of the rear surface 22 of the exterior housing 2 and the speaker unit 6 described below. Of the cooling gas that has flowed through the first duct 52, a portion of the cooling gas flows along the communication device 4 before being sucked into the first fan 51, thereby cooling the communication device 4. For example, the cooling gas flows along the surface 41 of the communication device 4 that faces the -Z direction.

[0045] [Configuration of the second duct] The second duct 53 is an exhaust-side duct of the first fan 51, and connects the sending section 513 of the first fan 51 to the exhaust port 241. Inside the second duct 53, the surface 42 facing the +Z direction of the communication device 4 is exposed, and the second heat dissipation member 317 is disposed. The cooling gas sent out from the first fan 51 in the -X direction flows through the second duct 53 in the -X direction to cool the communication device 4, and then flows through the second heat dissipation member 317 to cool the second heat dissipation member 317. The cooling gas that has cooled the second heat dissipation member 317 flows through the second duct 53 and is discharged from the exhaust port 241 to the outside of the exterior housing 2.

[0046] [Second fan configuration] The second fan 54 is provided at a corner in the +X direction and the +Z direction inside the exterior housing 2. The second fan 54 draws in outside air from the exterior housing 2 as cooling gas via the second air intake 266, and sends the drawn cooling gas to the light modulation device 352 and the control board arranged in the +Y direction relative to the image projection device 3. In addition, by blowing out the cooling gas by the second fan 54, the area where the image projection device 3 and the control board are arranged inside the exterior housing 2 becomes positive pressure. On the other hand, although not shown in detail, the space in the +Y direction relative to the control board communicates with the exhaust port 241. As a result, the cooling gas that has cooled the image forming device 35 including the optical modulation device 352 and the control board is pushed toward the exhaust port 241 by the positive pressure, and is pulled by the flow of cooling gas that flows through the second duct 53 and is exhausted from the exhaust port 241 to the outside of the outer housing 2 through the exhaust port 241.

[0047] [Configuration of the third fan and third duct] The third fan 55 is provided at a corner in the -X direction and the +Z direction inside the exterior housing 2. The third fan 55 draws in outside air from the exterior housing 2 as cooling gas via the third intake port 267, and sends out the drawn-in cooling gas to the first heat dissipation member 312. Note that a delivery port 551 of the third fan 55 opens into the third duct 56. The third duct 56 connects the air outlet 551 of the third fan 55 and the exhaust port 242 opening on the left side surface 24. The cooling gas discharged from the third fan 55 flows through the third duct 56. As described above, since the first heat dissipation member 312 is disposed inside the third duct 56, the cooling gas discharged from the third fan 55 into the third duct 56 cools the first heat dissipation member 312, and then is discharged from the exhaust port 242 to the outside of the exterior housing 2.

[0048] [Speaker unit configuration] Fig. 7 is a perspective view of the projector 1 from the rear side with the lower case 2B and the fabric unit 2C removed. Fig. 8 is a perspective view showing the speaker unit 6, and Fig. 9 is a plan view showing the speaker unit 6 as seen from the +Y direction. In addition to the above configuration, the projector 1 further includes a speaker unit 6, which is a speaker device arranged inside the exterior housing 2, as shown in FIG. The speaker unit 6 is disposed in the -Y direction and -Z direction portions of the exterior housing 2, and outputs sound according to an audio signal input from the control board. In addition, the speaker unit 6 is disposed inside the exterior housing 2, thereby forming a first duct 52 together with the inner surface of the back surface 22. As shown in FIGS. 7 to 9, the speaker unit 6 has a speaker housing 61, a first sound radiating section 62, second sound radiating sections 63 and 64, a porous member 65, and a sealing material 66.

[0049] The speaker housing 61 is an enclosure that supports a first sound emitting section 62, second sound emitting sections 63 and 64, a porous member 65, and a sealing material 66. As shown in Figures 8 and 9, the speaker housing 61 has a first surface 611, a second surface 612, a third surface 613, a fourth surface 614, a fifth surface 615, and a sixth surface 616, and is formed in a horizontal truncated quadrangular pyramid shape. In other words, the speaker housing 61 is formed in a shape in which the dimension along the X-axis decreases toward the -Z direction.

[0050] The first surface 611 faces the -Z direction and faces the inner surface of the rear portion 2CA of the fabric unit 2C. That is, the first surface 611 faces the surface of the rear portion 2CA opposite to the fabric 2C3 of the frame 2C1. Such a first surface 611 faces the communication port 2CA1 of the rear portion 2CA. First surface 611 is provided with recess 617 recessed in the +Z direction. That is, speaker housing 61 has recess 617. As will be described in detail later, recess 617 increases the width of a flow path through which cooling gas introduced from first air intake port 264 into exterior housing 2 flows.

[0051] The second surface 612 is the surface opposite to the first surface 611 . The third surface 613 faces the +X direction and the -Z direction. That is, the third surface 613 is an inclined surface that is inclined with respect to both the XY plane and the YZ plane. The fourth surface 614 faces the -X direction and the -Z direction. That is, the fourth surface 614 is an inclined surface that is inclined with respect to both the XY plane and the YZ plane. The fifth surface 615 faces the +Y direction and faces the communication device 4 and the first fan 51. The sixth surface 616 faces the −Y direction and faces the inner surface of the bottom surface 26. That is, the fifth surface 615 faces the first intake port 264. Such a speaker housing 61 is disposed opposite the communication opening 2CA1 and the first air intake port 264.

[0052] Fig. 10 is a diagram showing a cross section of the projector 1 along the XZ plane in the first sound emitting section 62. That is, Fig. 10 is a cross section showing the projector 1 in which the speaker unit 6 is arranged. The first sound emitting section 62 is provided on the first surface 611. More specifically, the first sound emitting section 62 is disposed at the bottom of the recess 617. As shown in FIG. 10, the first sound emitting section 62 is an outlet port of a bass reflex duct BR provided in the speaker housing 61. Therefore, the first sound emitting section 62 outputs low-frequency sounds. The inlet port of the bass reflex duct BR is disposed inside the speaker housing 61.

[0053] 7 to 10, the speaker housing 61 is provided with a porous member 65 that covers at least a portion of the first sound emitting portion 62. In this embodiment, the porous member 65 is provided so as to cover the entire first sound emitting portion 62 when viewed from the -Z direction. The porous member 65 reduces the flow speed of the air flowing through the bass reflex duct BR at the outlet port. This slows down the flow of air coming out of the bass reflex duct BR, reducing port noise and wind noise generated at the outlet port. Furthermore, the porous member 65 contacts the inner surface of the fabric unit 2C. This prevents the fabric unit 2C from vibrating and generating noise due to the low-frequency sound output from the first sound emitting portion 62. The porous member 65 can be made of, for example, a sponge.

[0054] Each of the second sound emitting units 63, 64 outputs sound according to an audio signal input from the control board. The second sound emitting units 63, 64 are full-range speakers and can output a sound in a higher range than the sound output from the first sound emitting unit 62. In other words, the second sound emitting units 63, 64 can output a sound in a range different from that of the first sound emitting unit 62. The second sound emitting section 63 is provided on the third surface 613, and a sound emitting surface 63A that emits sound in the second sound emitting section 63 faces the +X direction and the -Z direction as shown in Fig. 10. The sound output from the second sound emitting section 63 is emitted to the outside of the exterior housing 2 through the right sound emitting port 2CR1 and the fabric 2C3 of the fabric unit 2C. 8 and 9, the second sound emitting section 64 is provided on the fourth surface 614, and a sound emitting surface 64A that emits sound in the second sound emitting section 64 faces the -X direction and the -Z direction as shown in Fig. 10. The sound output from the second sound emitting section 64 is emitted to the outside of the exterior housing 2 through the left sound emitting port 2CL1 and the fabric 2C3 of the fabric unit 2C. By arranging the second sound emitting portions 63, 64 in this manner, sound can be effectively spread outside the exterior housing 2.

[0055] The sealing material 66 is provided between the inner surface of the fabric unit 2C constituting the exterior housing 2 and the speaker housing 61, and seals the space between the inner surface of the fabric unit 2C and the outer surface of the speaker housing 61. In this embodiment, the sealing material 66 is fixed to the speaker housing 61 with an adhesive or double-sided adhesive tape. More specifically, the sealing material 66 is provided across the first surface 611, the fifth surface 615, and the sixth surface 616. The sealing material 66 is provided between the speaker housing 61 and the inner surface of the exterior housing 2, and surrounds the first sound emitting portion 62 to separate the space in which the first sound emitting portion 62 is disposed from the space in which the second sound emitting portions 63, 64 are disposed. In other words, the sealing material 66 separates the airflow caused by the first fan 51 to circulate through the space in which the first sound emitting portion 62 is disposed from the second sound emitting portions 63, 64.

[0056] 8, the sealing material 66 has a first sealing material 661, a second sealing material 662, a third sealing material 663, and a fourth sealing material 664. The sealing material 66 is configured in a frame shape with the sealing materials 661 to 664 connected together. The first sealing material 661 and the second sealing material 662 are provided on the speaker housing 61 across the first surface 611, the fifth surface 615, and the sixth surface 616. The first sealing material 661 is disposed between the first sound emitting portion 62 and the second sound emitting portion 63 on the X-axis, and the second sealing material 662 is disposed between the first sound emitting portion 62 and the second sound emitting portion 64 on the X-axis. In this embodiment, the first air intake port 264 opens between the first sealing material 661 and the second sealing material 662. Therefore, the sealing materials 661 and 662 restrict the outside air introduced into the exterior housing 2 through the first air intake port 264 from flowing to the second sound emitting portions 63 and 64. The third sealing material 663 is provided along the X-axis on a portion in the +Z direction of the fifth surface 615. To the third sealing material 663, the first sealing material 661 and the second sealing material 662 are each connected. The fourth sealing material 664 is provided along the X-axis on a portion in the +Z direction of the sixth surface 616. To the fourth sealing material 664, the first sealing material 661 and the second sealing material 662 are each connected.

[0057] [Flow of cooling gas introduced from the first intake port] 11 and 12 are diagrams for explaining the flow of cooling gas introduced into the exterior housing 2 through the first air intake port 264. In other words, Fig. 11 is a perspective view of the projector 1 seen from the rear side, and Fig. 12 is a diagram showing a cross section of the projector 1 along the YZ plane. Note that in Fig. 11, in order to show the air flow inside the exterior housing 2, the fabric unit 2C is omitted from illustration. When the first fan 51 is driven, as shown in FIGS. 11 and 12, the outside air of the exterior housing 2 is introduced as cooling gas FW into the interior of the exterior housing 2 via the first air intake port 264 spaced apart from the installation surface SF. The cooling gas FW introduced into the exterior housing 2 from the first air intake 264 flows in the +Y direction inside the first duct 52 formed by the first sealing material 661, the second sealing material 662, the first surface 611 of the speaker housing 61, and the inner surface of the fabric unit 2C. As described above, the recess 617 recessed in the +Z direction is provided between the first sealing material 661 and the second sealing material 662, and the first sound emitting section 62 is provided at the bottom of the recess 617.

[0058] The cooling gas flowing through the first duct 52 further flows in the +Y direction while avoiding the porous member 65 provided corresponding to the first sound emitting section 62. Then, of the cooling gas FW flowing in the +Y direction, a part of the cooling gas FW1 is sucked in by the intake section 511 of the first fan 51. Of the cooling gas FW flowing in the +Y direction, the other cooling gas FW2 flows in the +Z direction between the first fan 51 and the fifth surface 615, and is sucked in by the intake section 512 of the first fan 51. As described above, the cooling gas sucked in by the first fan 51 is sent to the second duct 53, cools the communication device 4 and the second heat dissipation member 317, and then is discharged to the outside of the exterior housing 2 through the exhaust port 241.

[0059] [Flow of cooling gas when the first intake port is blocked] In a normal installation state of the projector 1, the flow path resistance of the cooling gas passing through the communication port 2CA1, which is the sound outlet of the first sound emitting section 62, is larger than the flow path resistance of the cooling gas passing through the first intake port 264. In such a state, the outside air of the exterior housing 2 is introduced into the interior of the exterior housing 2 from the first intake port 264 in preference to the communication port 2CA1. On the other hand, when the first intake port 264 is blocked by an obstacle or the like and the flow path resistance of the cooling gas through the first intake port 264 becomes larger than the flow path resistance of the cooling gas through the communication port 2CA1, as shown in Fig. 12, the outside air of the exterior housing 2 is introduced into the interior of the exterior housing 2 through the communication port 2CA1 as the cooling gas FWA and flows through the first duct 52. This maintains the introduction of the outside air into the exterior housing 2.

[0060] [Effects of the first embodiment] The projector 1 according to the present embodiment described above provides the following advantages. The projector 1 includes an exterior housing 2, a first fan 51, and a speaker unit 6. The first fan 51 is a fan provided inside the exterior housing 2. The speaker unit 6 includes a speaker housing 61 and a first sound emitting section 62 provided in the speaker housing 61.

[0061] The exterior housing 2 has a front surface 21, a rear surface 22, a right side surface 23, a left side surface 24, a top surface 25, and a bottom surface 26. The front surface 21 and the rear surface 22 are provided on opposite sides of the Z axis. The rear surface 22 has a communication opening 2CA1 that connects the inside and outside of the exterior housing 2 and serves as a sound emission opening of the first sound emission section 62. The rear surface 22 corresponds to the first wall, the front surface 21 corresponds to the second wall, and the Z axis corresponds to the first axis. The right side surface 23 and the left side surface 24 are provided on opposite sides of the X-axis that is perpendicular to the Z-axis. One of the right side surface 23 and the left side surface 24 corresponds to the third wall, and the other corresponds to the fourth wall, and the X-axis corresponds to the second axis. The top surface 25 and the bottom surface 26 are provided on opposite sides of the Y axis that is perpendicular to the X axis and the Z axis. The bottom surface 26 corresponds to the fifth wall, the top surface 25 corresponds to the sixth wall, and the Y axis corresponds to the third axis.

[0062] The bottom surface 26 has a fixed leg portion 262 , an adjustable leg portion 268 , a step portion 263 and a first air intake port 264 . The fixed legs 262 and the adjustable legs 268 are contact parts that come into contact with the installation surface on which the projector 1 is installed. The step portion 263 is a non-contact portion that does not contact the installation surface. The first intake port 264 is provided in the step portion 263, and the flow path resistance of the first intake port 264 is smaller than the flow path resistance of the communication port 2CA1. Note that the portion of the step portion 263 where the first intake port 264 is provided is provided continuous with the back surface 22. The speaker housing 61 is disposed opposite the communication opening 2CA1 and the first air intake port 264. The first fan 51 communicates with the communication port 2CA1 and the first intake port 264, and draws in the outside air of the exterior housing 2.

[0063] According to this configuration, the outside air of the exterior housing 2 flows through the first intake port 264, which has a flow path resistance smaller than the flow path resistance of the communication port 2CA1, which is the sound emission port of the first sound emission section 62, to the first fan 51 arranged inside the exterior housing 2. Therefore, since the outside air of the exterior housing 2 does not easily flow through the communication port 2CA1, it is possible to suppress the communication port 2CA1 from being blocked by dust contained in the outside air. This makes it possible to maintain the quality of the sound emitted from the first sound emission section 62 and passing through the communication port 2CA1. On the other hand, when the first air intake port 264 is blocked by an obstacle or the like, it is possible to allow outside air to circulate through the communication port 2CA1 into the exterior housing 2. This makes it possible to prevent a decrease in the cooling efficiency of the object to be cooled by the cooling gas circulated by the first fan 51. In addition, there is no need to provide a separate outside air intake port for taking in outside air in an emergency. This makes it possible to prevent the configuration of the projector 1 from becoming complicated, and contributes to making the projector 1 more compact.

[0064] In the projector 1, the step portion 263 as a non-contact portion is provided in the +Y direction with respect to the contact portions that come into contact with the installation surface in the fixed leg portion 262 and the adjustable leg portion 268. In other words, the step portion 263 is provided on the top surface 25 side with respect to the contact portions. According to such a configuration, it is possible to prevent the first air intake port 264 provided in the step portion 263 from being blocked by the installation surface. Therefore, the outside air of the exterior housing 2 can be introduced into the interior of the exterior housing 2 through the first air intake port 264.

[0065] In the projector 1, the contact portions that come into contact with the installation surface are the fixed leg portions 262 and the adjustable leg portions 268 that protrude from the bottom surface 26. The fixed leg portions 262 and the adjustable leg portions 268 are legs. According to this configuration, when the projector 1 is installed on an installation surface, the fixed legs 262 and the adjustable legs 268 come into contact with the installation surface, and a gap is generated between the installation surface and the bottom surface 26. Therefore, the step portion 263 can be separated from the installation surface, and therefore, blocking of the first air intake port 264 by the installation surface can be suppressed. Therefore, outside air of the exterior housing 2 can be introduced into the exterior housing 2 through the first air intake port 264.

[0066] The projector 1 includes a sealant 66 provided between the inner surface of the exterior housing 2 and the speaker housing 61. The speaker unit 6 is provided in the speaker housing 61, and has second sound emitting sections 63 and 64 that output sounds in a range different from that of the first sound emitting section 62. The sealing material 66 separates the airflow passing through the first fan 51 from the second sound emitting sections 63 and 64 . The fabric unit 2C of the exterior housing 2 includes a right sound emitting port 2CR1 as a sound emitting port of the second sound emitting portion 63, and a left sound emitting port 2CL1 as a sound emitting port of the second sound emitting portion 64. According to this configuration, the airflow flowing through the first fan 51 is less likely to flow through the second sound emitting portions 63, 64. This makes it possible to suppress the influence of the airflow on the sound emitted from the second sound emitting portions 63, 64. This makes it possible to suppress a decrease in the quality of the sound emitted from the second sound emitting portions 63, 64.

[0067] In the projector 1, the second sound emitting sections 63 and 64 are capable of outputting sounds in a higher range than the first sound emitting section 62. Here, if air flows in a direction that crosses the direction of propagation of high-pitched sounds, the sound will become muffled, degrading the sound quality. In contrast, the sealing material 66 prevents the airflow flowing through the first fan 51 from flowing through the second sound emitting sections 63, 64, thereby preventing a deterioration in the quality of the high-pitched sound emitted from the second sound emitting sections 63, 64. Therefore, the projector 1 can emit high-quality sound.

[0068] In the projector 1, the speaker housing 61 has a recess 617 on a first surface 611 that faces the inner surface of the rear surface 22. The first surface 611 corresponds to the facing surface. The first sound emitting portion 62 is provided in the recess 617 . The airflow passing through the first fan 51 passes through the recess 617 . According to this configuration, by providing the recess 617 in the speaker housing 61, the distance between the first surface 611 of the speaker housing 61 and the inner surface of the rear surface 22 can be increased. This makes it possible to increase the flow path width of the airflow that flows between the first surface 611 and the inner surface of the rear surface 22. This makes it possible to efficiently circulate the airflow through the first fan 51, and also makes it possible to suppress the generation of noise such as wind noise.

[0069] In the projector 1, the exterior housing 2 has a mesh 265 provided in the first air intake 264. According to such a configuration, the mesh 265 can prevent dust from entering the interior of the exterior housing 2 through the first air intake port 264.

[0070] In the projector 1, the speaker unit 6 has a porous member 65 that covers at least a part of the first sound emitting section 62. According to this configuration, the airflow flowing from the first air intake 264 toward the first fan 51 flows while avoiding the porous member 65. Therefore, the effect of the airflow on the sound emitted from the first sound emitting section 62 can be suppressed. The sound emitted from the first sound emitting portion 62 is low-frequency sound. Therefore, while the directionality of the sound is low, if the distance from the first sound emitting portion 62 to the inner surface of the rear surface 22 is short, there is a risk of noise being generated by vibrating the rear surface 22. In contrast, by providing the porous member 65, it is possible to suppress vibration of the rear surface 22, and thus to suppress the generation of noise.

[0071] In the projector 1, the speaker unit 6 includes a bass reflex duct BR and a porous member 65. The bass reflex duct BR has an inlet port disposed inside the speaker housing, and an outlet port which is the first sound emitting section 62. The porous member 65 is provided in a position covering the outlet port. According to such a configuration, the porous member 65 reduces the flow speed of the air that flows through the bass reflex duct BR and is output from the outlet port, thereby reducing port noise and wind noise generated at the outlet port.

[0072] The projector 1 includes an exterior housing 2, a first fan 51, and a speaker unit 6. The first fan 51 is a fan provided inside the exterior housing 2. The speaker unit 6 has a speaker housing 61, a first sound emitting section 62 provided in the speaker housing 61, and second sound emitting sections 63 and 64 capable of outputting sounds in a higher frequency range than the first sound emitting section 62. The projector 1 also includes a sealant 66 that constitutes the speaker unit 6. The sealant 66 is provided inside the exterior housing 2.

[0073] The exterior housing 2 has a front surface 21, a rear surface 22, a right side surface 23, a left side surface 24, a top surface 25, and a bottom surface 26. The front surface 21 and the rear surface 22 are provided on opposite sides of the Z axis. The rear surface 22 has a communication opening 2CA1 that connects the inside and outside of the exterior housing 2 and serves as a sound emission opening of the first sound emission section 62. The rear surface 22 corresponds to the first wall, the front surface 21 corresponds to the second wall, and the Z axis corresponds to the first axis. The right side surface 23 and the left side surface 24 are provided on opposite sides of the X-axis that is perpendicular to the Z-axis. One of the right side surface 23 and the left side surface 24 corresponds to the third wall, and the other corresponds to the fourth wall, and the X-axis corresponds to the second axis. The top surface 25 and the bottom surface 26 are provided on opposite sides of the Y axis that is perpendicular to the X axis and the Z axis. The bottom surface 26 corresponds to the fifth wall, the top surface 25 corresponds to the sixth wall, and the Y axis corresponds to the third axis.

[0074] The bottom surface 26 has a fixed leg portion 262 , an adjustable leg portion 268 , a step portion 263 and a first air intake port 264 . The fixed legs 262 and the adjustable legs 268 are contact parts that come into contact with the installation surface on which the projector 1 is installed. The step portion 263 is a non-contact portion that does not contact the installation surface. The first intake port 264 is provided in the step portion 263, and the flow path resistance of the first intake port 264 is smaller than the flow path resistance of the communication port 2CA1. Note that the portion of the step portion 263 where the first intake port 264 is provided is provided continuous with the back surface 22.

[0075] The speaker housing 61 is disposed opposite each of the rear surface 22 and the bottom surface 26. More specifically, the speaker housing 61 is disposed opposite each of the communication opening 2CA1 and the first air intake port 264. The first fan 51 communicates with the communication port 2CA1 and the first intake port 264, and draws in the outside air of the exterior housing 2. The sealing material 66 separates the first sound emitting portion 62 from the second sound emitting portions 63 and 64. The sealing material 66 surrounds the first sound emitting portion 62 and constitutes the first duct 52 that connects the communication port 2CA1 and the first intake port 264 with the first fan 51.

[0076] According to this configuration, when the first fan 51 is driven, the outside air of the exterior housing 2 is introduced into the interior of the exterior housing 2 through the first intake port 264, which has a flow resistance smaller than that of the communication port 2CA1, and flows through the first fan 51. That is, the amount of outside air introduced into the exterior housing 2 through the communication port 2CA1 is smaller than the amount of outside air introduced into the interior of the exterior housing 2 through the first intake port 264, so that the communication port 2CA1 is less likely to be blocked by dust contained in the outside air. The sound emitted from the first sound emission section 62 provided in the speaker housing 61 arranged opposite each of the back surface 22 and the bottom surface 26 is a lower-pitched sound than the sound emitted from the second sound emission sections 63, 64. Therefore, a part of the low-pitched sound emitted from the first sound emission section 62 is emitted from the communication port 2CA1, which has a smaller flow rate of outside air, so that the quality of the sound emitted from the first sound emission section 62 can be maintained.

[0077] On the other hand, when the first air intake port 264 is blocked by an obstacle or the like, the first fan 51 sucks in the outside air of the exterior housing 2 through the communication port 2CA1, and therefore it is possible to suppress a decrease in the cooling efficiency of the object to be cooled by the gas circulating through the first fan 51. In addition, since the outside air of the exterior housing 2 can be introduced into the exterior housing 2 through the communication port 2CA1, which serves as the sound emission port of the first sound emission section 62, there is no need to separately provide an outside air intake port for taking in outside air in an emergency. Therefore, it is possible to suppress the configuration of the projector 1 from becoming complicated, and it is possible to contribute to the miniaturization of the projector 1.

[0078] Here, when the sound emitted from the second sound emitting sections 63, 64 is a higher-pitched sound than the low-pitched sound emitted from the first sound emitting section 62, and air currents flow through the second sound emitting sections 63, 64, the high-pitched sound emitted from the second sound emitting sections 63, 64 is easily affected by the air currents. In contrast, since the first sound emitting section 62 and the second sound emitting sections 63, 64 are separated by the sealing material 66, it is possible to suppress airflow from flowing through the second sound emitting sections 63, 64. Therefore, it is possible to suppress the sound emitted from the second sound emitting sections 63, 64 from being affected by airflow, so it is possible to provide a projector 1 that is capable of suppressing deterioration of the output sound.

[0079] [Second embodiment] Next, a second embodiment of the present disclosure will be described. The projector according to this embodiment has a similar configuration to the projector 1 according to the first embodiment. Here, in the projector according to this embodiment, the first duct is configured by the inner surface of the exterior housing and a frame housed in the exterior housing, and a speaker unit is disposed inside the first duct. In this respect, the projector according to this embodiment differs from the projector 1 according to the first embodiment. Note that in the following description, parts that are the same or approximately the same as parts already described will be denoted by the same reference numerals and description thereof will be omitted.

[0080] FIG. 13 is a schematic diagram showing the internal configuration of a projector 1A according to the present embodiment. The projector 1A according to this embodiment has a frame FM and a first duct 52A shown in FIG. 13 instead of the first duct 52, and other than that, has the same configuration and functions as the projector 1 according to the first embodiment. The frame FM is housed in the exterior housing 2 and configures a first duct 52A that connects the first intake port 264 and the communication port 2CA1 to the intake section 511 of the first fan 51. In this embodiment, the first intake port 264 and the communication port 2CA1 each connect the outside of the exterior housing 2 to the inside of the first duct 52A.

[0081] The speaker unit 6 is disposed in the first duct 52A. Therefore, the outer surface of a speaker housing 61 of the speaker unit 6 constitutes the inner wall of the first duct 52A. A part of the cooling gas introduced into the first duct 52A flows in the +Y direction along the outer surface of the speaker housing 61 and is sucked in by the first fan 51. The first sound emitting section 62 of the speaker unit 6 outputs sound through the communication port 2CA1. In this embodiment, the first sound emitting section 62 is illustrated in FIG. 12 as a full-range speaker. However, the present invention is not limited to this, and the first sound emitting section 62 may be a port of a bass reflex duct or a passive radiator, similar to the first sound emitting section 62 according to the first embodiment. When the first sound emitting section 62 is the port, a porous member 65 covering the first sound emitting section 62 may be provided between the speaker housing 61 and the inner surface of the fabric unit 2C.

[0082] [Effects of the second embodiment] The projector 1A according to the present embodiment described above provides the following effects in addition to the effects similar to those of the projector 1 according to the first embodiment. The projector 1A has a first duct 52A through which the communication port 2CA1, the first intake port 264, and the first fan 51 communicate with each other. The speaker unit 6 is disposed inside the first duct 52. According to this configuration, when the first intake port 264 is not blocked, the outside air of the exterior housing 2 introduced into the first duct 52A from the first intake port 264 flows along the speaker housing 61 and is sucked into the first fan 51. That is, the outer surface of the speaker housing 61 can be used as the inner surface of the first duct 52A. Therefore, the projector 1 can be made more compact than when the speaker housing 61 and the first duct 52A are provided separately.

[0083] [Third embodiment] Next, a third embodiment of the present disclosure will be described. The projector according to this embodiment has a similar configuration to the projector 1A according to the second embodiment, but differs in that the speaker unit further includes another sound emitting section and another sealing material. Note that in the following description, parts that are the same or substantially the same as parts already described will be given the same reference numerals and descriptions thereof will be omitted.

[0084] FIG. 14 is a schematic diagram showing the internal configuration of a projector 1B according to the present embodiment. The projector 1B according to this embodiment has a speaker unit 6B shown in FIG. 14 instead of the speaker unit 6, and other than that, has the same configuration and functions as the projector 1A according to the second embodiment. The speaker unit 6B is disposed inside the first duct 52A. The speaker unit 6B has the same configuration as the speaker unit 6 according to the first and second embodiments, except that the speaker unit 6B further includes two low-frequency sound emitting parts 68 and a sealing material 69. Note that the first sound emitting part 62 of the speaker unit 6B according to this embodiment is configured by a speaker, like the first sound emitting part 62 of the speaker unit 6, and outputs sound to the outside of the exterior housing 2 through the communication opening 2CA1. That is, in this embodiment, the first sound emitting part 62 is capable of outputting sounds in a higher frequency range than the low-frequency sound emitting part 68.

[0085] The two low-frequency sound emitting sections 68 are sound emitting sections that output low-frequency sounds. Each of the two low-frequency sound emitting sections 68 is disposed so as not to face the rear surface 22. Of the two low-frequency sound emitting sections 68, the first low-frequency sound emitting section 681 is disposed on the sixth surface 616 with its sound emitting surface facing the -Y direction. More specifically, the first low-frequency sound emitting section 681 is provided at a position on the sixth surface 616 facing the first air intake port 264 of the bottom surface 26. Of the two low-frequency sound emitting sections 68, the second low-frequency sound emitting section 682 is disposed on the fifth surface 615 with its sound emitting surface facing the +Y direction. Note that one of the first low-frequency sound emitting section 681 and the second low-frequency sound emitting section 682 may be omitted.

[0086] The sealing material 69 surrounds the first low-frequency sound radiating portion 681 when viewed from the -Y direction, and is in contact with the sixth surface 616 and the inner surface of the bottom surface . In this embodiment, the dimension of first air intake 264 in the Z axis direction is larger than the dimension of first low-frequency sound output section 681 in the Z axis direction. Therefore, the portion of first air intake 264 that is not surrounded by sealing material 69 functions as an air intake that introduces cooling gas from inside first duct 52A. Note that, in the portion of first air intake 264 that is not surrounded by sealing material 69, mesh 265 is arranged inside exterior housing 2. On the other hand, the portion of first air intake port 264 surrounded by sealing material 69 functions as a sound outlet for first low-frequency sound emitting section 681 disposed inside the portion surrounded by sealing material 69 . The dimension of the first air intake port 264 along the X axis may be larger than the dimension of the first low-frequency sound emitting section 681 along the X axis.

[0087] [Effects of the third embodiment] The projector 1B according to the present embodiment described above provides the following effects in addition to the effects similar to those of the projector 1A according to the second embodiment. In the projector 1B, the speaker unit 6B includes a low-frequency sound emitting section 68. The low-frequency sound emitting section 68 is disposed in a direction not facing the rear surface 22 in the speaker housing 61, and outputs low-frequency sounds. Here, the directivity of low-frequency sounds is lower than the directivity of high-frequency sounds. Therefore, the low-frequency sound emitting section 68 does not need to face the rear surface 22 on which the communication opening 2CA1 facing the speaker housing 61 is provided. This increases the degree of freedom in layout when arranging the low-frequency sound emitting section 68, which emits low-frequency sounds, in the speaker housing 61.

[0088] [Modifications of the embodiment] The present disclosure is not limited to the above-described embodiments, and modifications and improvements within the scope that can achieve the object of the present disclosure are included in the present disclosure. In each of the above embodiments, the non-contact portion of the exterior housing 2 where the first air intake 264 is provided is the step portion 263 provided closer to the top surface 25 than the contact portions of the fixed leg portion 262 and the adjustable leg portion 268 that contact the installation surface. However, this is not limited thereto, and the non-contact portion of the exterior housing 2 where the first air intake 264 is provided may be the rear-side inclined surface 27B that spans both the rear surface 22 and the bottom surface 26. In this case, it is possible to prevent the first air intake 264 from being blocked by the installation surface. Therefore, the outside air of the exterior housing 2 can be introduced into the interior of the exterior housing 2 through the first air intake 264.

[0089] In each of the above embodiments, the sealing material 66 separates the first sound emitting portion 62 from the second sound emitting portions 63, 64. However, such a sealing material 66 may not be required. In this case, in the speaker unit 6, the second sound emitting portions 63, 64 that output sounds in a range different from that of the first sound emitting portion 62 may emit sound through the same communication port as the first sound emitting portion 62. In other words, the communication port 2CA1, the right sound emitting port 2CR1, and the left sound emitting port 2CL1 may be a single communication port that communicates between the inside and the outside of the exterior housing 2. Even with this configuration, the flow rate of outside air flowing through the communication openings that serve as sound emission ports of each of the sound emission sections 62 to 64 is less than the flow rate of outside air flowing through the first air intake port 264. Therefore, the quality of the sound emitted from each of the first sound emission section 62 and the second sound emission sections 63, 64 and passing through the communication openings can be maintained.

[0090] In each of the above embodiments, the speaker unit 6, 6B includes the second sound emitting portion 63, 64 in addition to the first sound emitting portion 62. However, this is not limited thereto, and the speaker unit 6, 6B may not include the second sound emitting portion 63, 64. Furthermore, the speaker unit 6, 6B may include one of the second sound emitting portions 63, 64. That is, the number of second sound emitting portions included in the speaker unit of the present disclosure can be changed as appropriate.

[0091] In each of the above embodiments, the speaker units 6, 6B are provided at positions facing the inner surface of the rear surface 22 and the inner surface of the bottom surface 26 of the exterior housing 2. However, this is not limiting, and the position of the speaker unit 6 within the exterior housing 2 can be changed as appropriate. For example, the speaker units 6, 6B may be provided at positions facing the inner surface of the front surface 21 and the inner surface of the bottom surface 26 of the exterior housing 2. In this case, the front surface 21 corresponds to the first wall.

[0092] In each of the above embodiments, the bottom surface 26 is provided with the fixed leg 262 and the adjustable leg 268 as contact parts that come into contact with the installation surface. However, this is not limited to the above, and the legs 262, 268 may not be provided. In this case, the part of the bottom surface 26 that comes into contact with the installation surface becomes the contact part.

[0093] In each of the above embodiments, the speaker housing 61 has the recess 617 on the first surface 611 facing the inner surface of the rear surface 22 as the first wall, and the airflow flowing through the first fan 51 flows through the recess 617. However, this is not limiting, and the recess 617 may be omitted.

[0094] In each of the above embodiments, the first air intake port 264 is provided with the mesh 265. However, this is not limiting, and for example, when the first air intake port 264 is formed with sufficiently fine holes, the mesh 265 may not be provided.

[0095] In the first embodiment, the speaker housing 61 is provided with the porous member 65 that covers at least a part of the first sound emitting portion 62. However, this is not limiting, and the porous member 65 may be omitted. Even if the porous member 65 is provided, the porous member 65 does not have to completely cover the first sound emitting portion 62. Furthermore, the porous member 65 is arranged at a position in the speaker housing 61 that covers the outlet port of the bass reflex duct BR. However, the position of the porous member 65 for reducing the flow speed of the air coming out of the bass reflex duct BR is not limited to a position covering the outlet port on the outside of the speaker housing 61. For example, the porous member 65 may be provided midway through the bass reflex duct BR, or may be arranged at a position covering the inlet port of the bass reflex duct BR inside the speaker housing 61. Even with such an arrangement of the porous member 65, the port noise and wind noise generated at the outlet port can be reduced.

[0096] In the above embodiments, the projectors 1, 1A, and 1B are provided with three light modulation devices 352R, 352G, and 352B. However, the present disclosure is not limited to this, and can also be applied to a projector provided with two or less light modulation devices, or four or more light modulation devices. In each of the above-described embodiments, the image projection device 3 includes optical components arranged in the layout shown in Fig. 5. However, the present invention is not limited to this, and the optical components included in the image projection device 3 and the layout of the optical components are not limited to the above. In each of the above embodiments, the light source device 31 includes the light emitting element 3111, the wavelength conversion element 316, and the diffuse reflection element 319. However, the present invention is not limited to this, and the configuration of the light source device 31 is not limited to the above. For example, the light source device 31 may include a light emitting element that emits red light, a light emitting element that emits green light, and a light emitting element that emits blue light, or may include a discharge light source lamp.

[0097] In each of the above embodiments, the light modulation device 352 is provided with a transmissive liquid crystal panel having different light incident and light exit surfaces. However, the present invention is not limited to this. Instead of a transmissive liquid crystal panel, the light modulation device 352 may be provided with a reflective liquid crystal panel having the same light incident and light exit surfaces. In addition, as long as the light modulation device is capable of modulating an incident light beam to form an image according to image information, it may be a light modulation device other than a liquid crystal device, such as a device using a micromirror, for example, a device using a DMD (Digital Micromirror Device).

[0098] [Summary of this disclosure] The following is a summary of this disclosure. [Appendix 1] an exterior housing having a first wall and a second wall provided on opposite sides of a first axis, a third wall and a fourth wall provided on opposite sides of a second axis perpendicular to the first axis, and a fifth wall and a sixth wall provided on opposite sides of a third axis perpendicular to both the first axis and the second axis; A speaker unit having a speaker housing and a first sound emitting portion provided in the speaker housing; a fan provided inside the exterior housing, the first wall has a communication opening that communicates between the inside and the outside of the exterior housing and serves as a sound emission opening of the first sound emission section, The fifth wall is A contact portion that contacts an installation surface; A non-contact portion that is provided continuously with the first wall and does not contact the installation surface; an intake port provided in the non-contact portion and having a flow resistance smaller than the flow resistance of the communication port, the speaker housing is disposed opposite the communication port and the air intake port, the fan communicates with the communication port and the intake port and draws in outside air from the exterior housing; A projector characterized by:

[0099] According to this configuration, the outside air of the exterior housing flows through the intake port having a flow path resistance smaller than the flow path resistance of the communication port serving as the sound emission port of the first sound emission section, and then flows to the fan disposed inside the exterior housing. Therefore, since the outside air of the exterior housing does not easily flow through the communication port, it is possible to prevent the communication port from being blocked by dust contained in the outside air. This makes it possible to maintain the quality of the sound emitted from the first sound emission section and passing through the communication port. On the other hand, when the air intake is blocked by an obstacle or the like, it is possible to allow outside air to flow through the communication port into the exterior housing. This makes it possible to prevent a decrease in the cooling efficiency of the object to be cooled by the gas circulated by the fan. In addition, there is no need to provide a separate outside air intake port for taking in outside air in an emergency. This makes it possible to prevent the projector configuration from becoming complicated and contributes to making the projector more compact.

[0100] [Appendix 2] In the projector according to claim 1, The non-contact portion is a step portion provided on the sixth wall side with respect to the contact portion. A projector characterized by: According to this configuration, it is possible to prevent the air intake port provided in the non-contact portion from being blocked by the installation surface, and therefore it is possible to introduce outside air from the exterior housing into the interior of the exterior housing through the air intake port.

[0101] [Appendix 3] In the projector according to claim 1, The non-contact portion is an inclined surface extending across each of the first wall and the fifth wall. A projector characterized by: According to this configuration, it is possible to prevent the air intake port provided in the non-contact portion from being blocked by the installation surface, and therefore it is possible to introduce outside air from the exterior housing into the interior of the exterior housing through the air intake port.

[0102] [Appendix 4] In the projector according to any one of Supplementary Note 1 to Supplementary Note 3, The contact portion is a leg portion protruding from the fifth wall. A projector characterized by: According to this configuration, when the projector is installed on an installation surface, the legs protruding from the fifth wall come into contact with the installation surface, creating a gap between the installation surface and the fifth wall. This allows the non-contact portion to be separated from the installation surface, preventing the air intake from being blocked by the installation surface. This allows the outside air of the exterior housing to be introduced into the exterior housing through the air intake.

[0103] [Appendix 5] 5. The projector according to claim 1, The speaker unit has a second sound emitting section that outputs a sound in a different range from the first sound emitting section using the communication opening as a sound emitting opening. A projector characterized by: As described above, the flow rate of outside air flowing through the communication opening is smaller than the flow rate of outside air flowing through the intake port, so that the quality of the sounds emitted from the first sound emitting section and the second sound emitting section and passing through the communication opening can be maintained.

[0104] [Appendix 6] 5. The projector according to claim 1, a sealant provided between the inner surface of the exterior housing and the speaker housing; the speaker unit has a second sound emitting portion provided in the speaker housing and configured to output a sound in a range different from that of the first sound emitting portion, The sealing material separates the airflow passing through the fan from the second sound emitting portion, The exterior housing includes a sound output port of the second sound output section. A projector characterized by: According to this configuration, the airflow that flows through the fan is less likely to flow through the second sound emitting section. This makes it possible to suppress the influence of the airflow on the sound emitted from the second sound emitting section. As a result, it is possible to suppress a decrease in the quality of the sound emitted from the second sound emitting section.

[0105] [Appendix 7] 7. The projector according to claim 6, The second sound emitting unit is capable of outputting sounds in a higher range than the first sound emitting unit. A projector characterized by: Here, if air flows in a direction that crosses the direction of propagation of high-pitched sounds, the sound will become muffled, degrading the sound quality. In contrast, the sealing material prevents the airflow that flows through the fan from flowing through the second sound emission section, which makes it possible to prevent deterioration in the quality of high-pitched sound emitted from the second sound emission section. This allows the projector to emit high-quality sound.

[0106] [Appendix 8] 5. The projector according to claim 1, The speaker unit is disposed in the speaker housing in a direction not facing the first wall, and has a sound emitting portion that outputs low-frequency sounds. A projector characterized by: Here, the directivity of low-frequency sounds is lower than that of high-frequency sounds. Therefore, the sound emitting section that emits low-frequency sounds does not need to face the first wall that has the communication opening that the speaker housing faces. This increases the degree of freedom in layout when arranging the sound emitting section that emits low-frequency sounds in the speaker housing.

[0107] [Appendix 9] 9. The projector according to claim 1, the speaker housing has a recess on a surface facing the inner surface of the first wall, The first sound emitting portion is provided in the recess, The airflow passing through the fan passes through the recess. A projector characterized by: According to this configuration, by providing the recess in the speaker housing, the distance between the opposing surface of the speaker housing and the inner surface of the first wall can be increased. This increases the flow path width of the airflow that flows between the opposing surface and the inner surface of the first wall. This allows the airflow to flow efficiently through the fan, and also suppresses the generation of noise such as wind noise.

[0108] [Appendix 10] 9. The projector according to claim 1, a duct communicating with the communication port, the intake port, and the fan; The speaker unit is disposed within the duct. A projector characterized by: With this configuration, when the air intake is not blocked, the outside air of the exterior housing that is introduced into the duct from the air intake flows along the speaker housing and is sucked in by the fan. In other words, the outer surface of the speaker housing can be used as the inner surface of the duct. This makes it possible to make the projector more compact than if the speaker housing and duct were provided separately.

[0109] [Appendix 11] 11. The projector according to claim 1, The exterior housing has a mesh provided at the air intake port. A projector characterized by: According to this configuration, the mesh can prevent dust from entering the interior of the exterior housing through the air intake port.

[0110] [Appendix 12] 12. The projector according to claim 1, The speaker unit has a porous member that covers at least a part of the first sound emitting portion. A projector characterized by: With this configuration, the airflow flowing from the air intake toward the fan avoids the porous member, thereby making it possible to suppress the influence of the airflow on the sound emitted from the first sound emitting portion. Furthermore, when the sound emitted from the first sound emitting section is a low-frequency sound, while the directionality is low as described above, if the distance from the first sound emitting section to the inner surface of the first wall is short, there is a risk of noise being generated by vibrating the first wall. In contrast, by providing the porous member, it is possible to suppress the first wall from vibrating, and thus the generation of noise can be suppressed.

[0111] [Appendix 13] 12. The projector according to claim 1, The speaker unit includes: Bass reflex duct, A porous member, The bass reflex duct is an inlet port disposed within the speaker housing; An outlet port which is the first sound emitting portion, the porous member is provided at any one of a position covering the inlet port, a position between the inlet port and the outlet port, and a position covering the outlet port. A projector characterized by: With this configuration, the porous member reduces the flow velocity of the air that flows through the bass reflex duct and is output from the outlet port, thereby reducing port noise and wind noise generated at the outlet port.

[0112] [Appendix 14] an exterior housing having a first wall and a second wall provided on opposite sides of a first axis, a third wall and a fourth wall provided on opposite sides of a second axis perpendicular to the first axis, and a fifth wall and a sixth wall provided on opposite sides of a third axis perpendicular to both the first axis and the second axis; A speaker unit having a speaker housing, a first sound emitting section provided in the speaker housing, and a second sound emitting section capable of outputting a sound in a higher frequency range than the first sound emitting section; A fan provided inside the exterior housing; a sealing material provided inside the exterior housing; the first wall has a communication opening that communicates between the inside and the outside of the exterior housing and serves as a sound emission opening of the first sound emission section, The fifth wall is A contact portion that contacts an installation surface; A non-contact portion that is provided continuously with the first wall and does not contact the installation surface; an intake port provided in the non-contact portion and having a flow resistance smaller than the flow resistance of the communication port, the speaker housing is disposed opposite each of the first wall and the fifth wall, the fan communicates with the communication port and the intake port and draws in outside air from the exterior housing; The sealing material separates the first sound emitting section and the second sound emitting section, surrounds the first sound emitting section, and configures a duct that connects the communication port and the intake port with the fan. A projector characterized by:

[0113] According to this configuration, when the fan is driven, the outside air of the exterior housing is introduced into the interior of the exterior housing through the intake port having a flow resistance smaller than the flow resistance of the communication port, and flows through the fan. That is, the amount of outside air introduced into the exterior housing through the communication port is smaller than the amount of outside air introduced into the interior of the exterior housing through the intake port, so the communication port is less likely to be blocked by dust contained in the outside air. The sound emitted from the first sound emission section provided in the speaker housing arranged opposite each of the first wall and the fifth wall is a lower-pitched sound than the sound emitted from the second sound emission section. Therefore, a part of the low-pitched sound emitted from the first sound emission section is emitted from the communication port with a smaller flow rate of outside air, so the quality of the sound emitted from the first sound emission section can be maintained.

[0114] On the other hand, if the air intake is blocked by an obstacle or the like, the fan draws in outside air from the exterior housing through the communication port, so that it is possible to prevent a decrease in the cooling efficiency of the object to be cooled by the gas circulating through the fan. In addition, since the outside air from the exterior housing can be introduced into the exterior housing through the communication port, which serves as the sound emission port of the first sound emission section, there is no need to provide a separate outside air intake port for taking in outside air in an emergency. This prevents the configuration of the projector from becoming complicated and contributes to making the projector more compact.

[0115] Here, as described above, when the sound emitted from the second sound emitting section is a higher-pitched sound than the low-pitched sound emitted from the first sound emitting section, and airflow flows through the second sound emitting section, the high-pitched sound emitted from the second sound emitting section is easily affected by the airflow. In contrast, since the first sound emitting section and the second sound emitting section are separated by a sealing material, it is possible to prevent air currents from flowing into the second sound emitting section. Therefore, it is possible to prevent the sound emitted from the second sound emitting section from being affected by air currents, so it is possible to provide a projector that can prevent deterioration of the output sound. [Explanation of symbols]

[0116] 1, 1A, 1B... projector, 2... exterior housing, 21... front (second wall), 22... rear (first wall), 23... right side (third or fourth wall), 24... left side (fourth or third wall), 25... top (sixth wall), 26... bottom (fifth wall), 261... protruding portion, 262... fixed leg (contact portion), 263... step portion (non-contact portion), 264... first air intake (air intake), 265... mesh, 266...second air intake port, 267...third air intake port, 268...adjustment leg (contact portion), 27B...rear side inclined surface (inclined surface), 2A...upper case, 2B...lower case, 2C...fabric unit, 2C1...frame, 2C2...opening, 2C3...fabric, 2CA...rear portion, 2CA1...communication port, 2CR...right side portion, 2CR1...right sound outlet, 2CL...left side portion, 2C L1...left side sound outlet, 5...cooling device, 51...first fan (fan), 52...first duct (duct), 53...second duct, 54...second fan, 55...third fan, 56...third duct, 6,6B...speaker unit, 61...speaker housing, 611...first surface (opposing surface), 612...second surface, 613...third surface, 614...fourth surface, 615...fifth surface, 616...sixth surface, 61 7... recess, 62... first sound emitting part, 63... second sound emitting part, 64... second sound emitting part, 65... porous member, 66... ​​sealing material, 661... first sealing material, 662... second sealing material, 663... third sealing material, 66 4...Fourth sealing material, 68...Sound emitting section for bass range, 681...Sound emitting section for first bass range, 682...Sound emitting section for second bass range, 69...Sealing material, FW, FW1, FW2, FWA...Cooling gas, SF...installation surface.

Claims

1. an exterior housing having a first wall and a second wall provided on opposite sides of a first axis, a third wall and a fourth wall provided on opposite sides of a second axis perpendicular to the first axis, and a fifth wall and a sixth wall provided on opposite sides of a third axis perpendicular to both the first axis and the second axis; A speaker unit having a speaker housing and a first sound emitting portion provided in the speaker housing; a fan provided inside the exterior housing, the first wall has a communication opening that communicates between the inside and the outside of the exterior housing and serves as a sound emission opening of the first sound emission section, The fifth wall is A contact portion that contacts an installation surface; a non-contact portion provided continuously with the first wall and not in contact with the installation surface; an intake port provided in the non-contact portion and having a flow resistance smaller than the flow resistance of the communication port, the speaker housing is disposed opposite the communication port and the air intake port, the fan communicates with the communication port and the intake port and draws in outside air from the exterior housing; A projector characterized by:

2. 2. The projector according to claim 1, The non-contact portion is a step portion provided on the sixth wall side with respect to the contact portion. A projector characterized by:

3. 2. The projector according to claim 1, The non-contact portion is an inclined surface extending across each of the first wall and the fifth wall. A projector characterized by:

4. The projector according to any one of claims 1 to 3, The contact portion is a leg portion protruding from the fifth wall. A projector characterized by:

5. The projector according to any one of claims 1 to 3, The speaker unit has a second sound emitting portion that outputs a sound in a range different from that of the first sound emitting portion using the communication port as a sound emitting port. A projector characterized by:

6. The projector according to any one of claims 1 to 3, a sealant provided between the inner surface of the exterior housing and the speaker housing; The speaker unit has a second sound emitting portion provided in the speaker housing and configured to output a sound in a range different from that of the first sound emitting portion, The sealing material separates an airflow passing through the fan from the second sound emitting portion, The exterior housing includes a sound output port of the second sound output section. A projector characterized by:

7. 7. The projector according to claim 6, The second sound emitting unit is capable of outputting a sound in a higher range than the first sound emitting unit. A projector characterized by:

8. The projector according to any one of claims 1 to 3, The speaker unit is disposed in the speaker housing in a direction not facing the first wall, and has a sound emitting portion that outputs low-frequency sounds. A projector characterized by:

9. The projector according to any one of claims 1 to 3, the speaker housing has a recess on a surface facing the inner surface of the first wall, The first sound emitting portion is provided in the recess, The airflow passing through the fan passes through the recess. A projector characterized by:

10. The projector according to any one of claims 1 to 3, a duct communicating with the communication port, the intake port, and the fan; The speaker unit is disposed within the duct. A projector characterized by:

11. The projector according to any one of claims 1 to 3, The exterior housing has a mesh provided at the air intake port. A projector characterized by:

12. The projector according to any one of claims 1 to 3, The speaker unit has a porous member that covers at least a portion of the first sound emitting portion. A projector characterized by:

13. The projector according to any one of claims 1 to 3, The speaker unit includes: Bass reflex duct, A porous member, The bass reflex duct is an inlet port disposed within the speaker housing; An outlet port which is the first sound emitting portion, the porous member is provided at any one of a position covering the inlet port, a position between the inlet port and the outlet port, and a position covering the outlet port. A projector characterized by:

14. an exterior housing having a first wall and a second wall provided on opposite sides of a first axis, a third wall and a fourth wall provided on opposite sides of a second axis perpendicular to the first axis, and a fifth wall and a sixth wall provided on opposite sides of a third axis perpendicular to both the first axis and the second axis; A speaker unit including a speaker housing, a first sound emitting section provided in the speaker housing, and a second sound emitting section capable of outputting a sound in a higher frequency range than the first sound emitting section; A fan provided inside the exterior housing; a sealing material provided inside the exterior housing; the first wall has a communication opening that communicates between the inside and the outside of the exterior housing and serves as a sound emission opening of the first sound emission section, The fifth wall is A contact portion that contacts an installation surface; a non-contact portion provided continuously with the first wall and not in contact with the installation surface; an intake port provided in the non-contact portion and having a flow resistance smaller than the flow resistance of the communication port, the speaker housing is disposed opposite each of the first wall and the fifth wall, the fan communicates with the communication port and the intake port and draws in outside air from the exterior housing; The sealing material separates the first sound emitting portion from the second sound emitting portion, surrounds the first sound emitting portion, and configures a duct that connects the communication port and the intake port with the fan. A projector characterized by:

Images