JP6551567B2 - projector - Google Patents

Description

  The present invention relates to a projector provided with a connection terminal portion.

2. Description of the Related Art Conventionally, a projector is known that includes a light modulation unit that modulates light emitted from a light source unit to form an image and an optical unit that enlarges and projects an image formed by the light modulation unit on a screen. (See, for example, Patent Document 1).
In this type of projector, connection is made with an external device via a connection cable, and connection terminals for inputting image information and the like from the external device and outputting a predetermined signal to the external device, and a power cable are connected. The connection terminal portions are respectively provided on one surface (for example, the back surface portion) of the housing.
In the state where a plurality of connection cables and power cables are connected to the connection terminal portion, connectors of various cables are in a state of protruding from the rear surface portion of the housing, which is not preferable in appearance. For this reason, the structure which covers the connector of a connection terminal part and each cable with a cover member is employ | adopted by attaching the opening part of a cover member to the back part of a housing | casing using a container-like cover member.

JP, 2009-175321, A

However, the connector of each cable is in a state of protruding from the back of the housing. Further, since each cable has a predetermined rigidity, the bendable position is a position separated from the connector. Therefore, the cover member has a shape that does not mechanically interfere with each cable, that is, the container-like depth dimension is equal to or greater than the protrusion dimension of each cable with respect to the housing (dimension from the connector tip to the bendable position) Necessary.
Therefore, the depth dimension of the cover member becomes relatively large, and the length dimension in the front-rear direction of the projector becomes large in a state where the cover member is attached to the housing, which is not preferable in appearance. In addition, when installing the projector, a space larger than the size of the projector is required.
SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the above-described conventional techniques, and to provide a projector capable of suppressing an installation space, which is preferable in appearance even in a state where a cable is connected to a connection terminal.

  In order to achieve the above object, according to the present invention, a light modulation unit that modulates light emitted from a light source unit to form an image, and an optical unit that projects an image formed by the light modulation unit The housing includes a first connection terminal portion and a second connection terminal portion to which connection cables are respectively connected on the same surface of the housing, and the first connection terminal portion includes the first connection terminal portion and the second connection terminal portion. The connector of the connection cable is disposed on the back side of the second connection terminal portion so that the connector of the connection cable can be inserted in the direction facing the surface, and the second connection terminal portion is on the front side of the first connection terminal portion. The connector is characterized in that the connector of the connection cable can be inserted in a direction along the surface.

  In this configuration, the housing includes an installation surface portion for fixing and installing the housing, and a side surface portion provided around the installation surface portion, and the first connection terminal is provided on one side surface as the surface. Part and the second connection terminal part, wherein the second connection terminal part is disposed so that the connector can be inserted from the installation surface part side, and from the installation surface part to the second connection terminal part in the side surface part A concave portion that is recessed toward the inside may be formed on the far side, and the first connection terminal portion may be disposed on the bottom portion of the concave portion.

Further, the housing may be provided with a plurality of air inlets for introducing cooling air into the housing on the surface, and the second connection terminal may be provided between the air outlets.
Furthermore, the first connection terminal portion is disposed on the side farther from the installation surface portion than at least one air supply port, and a connection cable connected to the first connection terminal portion is disposed between the air supply ports. A binding member for binding may be provided.

  Moreover, the said housing | casing is provided with the standing wall part erected around the said surface, and a flat cover member may be arrange | positioned to this standing wall part. Furthermore, the cover member may include a ventilation grid.

  The first connection terminal unit may include at least a signal input terminal to which an image signal from an external device is input, and the second connection terminal unit may be a power supply terminal to which a power cable is connected.

  According to this invention, a housing | casing equips the same surface of this housing | casing with the 1st connection terminal part to which a connection cable is connected, respectively, and a 2nd connection terminal part. And the 1st connection terminal part is arranged in the back side rather than the 2nd connection terminal part so that the connector of a connection cable may be inserted in the direction which counters a field. Further, the second connection terminal portion is arranged on the near side of the first connection terminal portion so that the connector of the connection cable can be inserted in a direction along the surface. Thereby, in the state which connected the connection cable to the 1st connection terminal part and the 2nd connection terminal part, respectively, the protrusion amount of the connection cable to the direction facing this surface in the surface of a housing | casing can be restrained small. Therefore, even when the connection cable is connected to the connection terminal portion, the configuration can be preferable from the appearance, and the installation space of the projector can be further reduced.

FIG. 1 is a perspective view showing an appearance of a projector of the present embodiment. It is a functional block diagram of a projector. It is a schematic diagram which shows the structure of the back part of a projector. It is IV-IV sectional drawing of FIG. It is the elements on larger scale of the back part of a projector. It is an external view which shows the use aspect of a projector.

Embodiments to which the present invention is applied will be described below with reference to the drawings.
FIG. 1 is a perspective view showing the appearance of a projector 1 according to the present embodiment. Specifically, FIG. 1 is a perspective view of a state where the projector 1 is installed in a normal posture, as viewed from the upper rear side.
The projector 1 is connected to an external image supply device (not shown) such as a computer such as a PC and various image players, and projects an image based on image information supplied from the image supply device on a screen. As shown in FIG. 1, the projector 1 includes an exterior housing 2 that constitutes an exterior.

The exterior housing 2 accommodates the apparatus main body of the projector 1. As shown in FIG. 1, the exterior housing 2 includes an upper case 2A and a lower case 2B. The upper case 2A has a substantially rectangular top surface portion 3 intersecting in the vertical direction, and is formed in the shape of a container having one opening. Similarly, the lower case 2B also has a substantially rectangular bottom surface portion (installation surface portion) 4 intersecting in the vertical direction, and is formed in a container shape with one opening.
Then, the upper case 2A and the lower case 2B are connected to each other, so that the exterior housing 2 is formed with a front surface portion 5, a right side surface portion 6, a left side surface portion 7, and a back surface portion 8 as side surface portions. In the present embodiment, the back surface portion 8 is formed integrally with the lower case 2B, but may be formed integrally with the upper case 2A, or a separate body between the upper case 2A and the lower case 2B. The back portion may be formed by sandwiching these members.
Although not shown in the figure, the bottom surface portion 4 of the lower case 2B is provided with a plurality of leg pieces, which can be placed on a desk or the like via the leg pieces and suspended from the ceiling of the room. Yes. Here, a posture in which the top surface portion 3 of the exterior housing 2 is positioned on the upper side and a bottom surface portion 4 is positioned on the lower side is referred to as a normal mounting posture. On the contrary, the posture suspended from the ceiling of the room in a state where the top surface portion 3 of the exterior casing 2 is located on the lower side and the bottom surface portion 4 is located on the upper side is called a ceiling suspension posture. . For this reason, in the present embodiment, the bottom surface 4 of the exterior housing 2 functions as an installation surface.

FIG. 2 is a block diagram showing a functional configuration of the apparatus main body 9 accommodated in the exterior casing 2.
As shown in FIG. 2, the apparatus main body 9 includes a projection unit 20 for forming an optical image, and an image processing system for electrically processing an image signal input to the projection unit 20. Each unit operates according to the control of the control unit 10.
The projection unit 20 includes a light source unit 21, a light modulation device (light modulation unit) 22, and a projection optical system (optical unit) 23. The light source unit 21 includes a light source whose brightness can be PWM-controlled by a pulse signal such as an LED or a laser light source. In this embodiment, a configuration provided with laser light sources 42 and 43 using two blue semiconductor laser elements that emit blue laser light is illustrated. The laser light sources 42 and 43 may include a plurality of semiconductor elements and emit a plurality of laser beams.

  The light modulation device 22 receives a signal from an image processing system to be described later, and modulates the light emitted from the light source unit 21. The modulated light (image light) 23 a, 23 b, 23 c modulated by the light modulation device 22 is guided to the projection optical system 23. As a specific configuration of the light modulation device 22, for example, a system using three transmissive or reflective liquid crystal light valves corresponding to each color of RGB can be cited. In this embodiment, three transmissive liquid crystal panels corresponding to three color light of RGB, that is, a liquid crystal panel 22a that modulates blue light B, a liquid crystal panel 22b that modulates red light R, and green light G It is set as the structure provided with the liquid crystal panel 22c to modulate. The liquid crystal panels 22a, 22b, and 22c included in the light modulation device 22 are driven by a liquid crystal panel driver 33 described later, and change the light transmittance of each pixel arranged in a matrix on each liquid crystal panel to change the image. Form.

The R, G, and B color lights modulated by the light modulation device 22 are synthesized by a cross dichroic prism (not shown) and guided to the projection optical system 23.
The projection optical system 23 includes a projection lens, which is a lens group for projecting modulated light 23a, 23b, and 23c modulated by the light modulation device 22 onto the screen SC to form an image, which is not shown. Further, the projection optical system 23 is provided with various mechanisms for changing the state of the projection optical system 23 such as the state of the stop of the projection lens, the state of the zoom, and the shift position. The projection optical system 23 is connected to a projection optical system drive unit (optical system adjustment unit) 34 that controls and drives a mechanism that changes the state of the projection optical system 23.

  The light source unit 21 is connected to a pulse output unit 52 that outputs a pulse signal for controlling the light emission of the laser light sources 42 and 43. The pulse output unit 52 includes a PWM signal generation unit 50 and an intermittent light emission signal generation unit 51. The projector 1 performs intermittent light emission control and PWM control on the laser light sources 42 and 43, thereby improving video visibility, reducing crosstalk during 3D image projection, and adjusting the brightness of the projected image. Is configured to be able to achieve.

  The light source unit 21 includes laser light source drivers 40 and 41 to which pulse signals are input from the pulse output unit 52. The laser light source drivers 40 and 41 supply power to the laser light sources 42 and 43 in accordance with pulse signals, respectively, and cause the laser light sources 42 and 43 to emit light by the power supplies.

  The laser light source 42 is driven by the laser light source driver 40 to emit blue laser light 42 a, and the blue laser light 42 a is diffused through the diffusion plate 44. The diffused laser light enters the liquid crystal panel 22a of the light modulation device 22 as blue light 20a, and is modulated by the liquid crystal panel 22a. On the other hand, the laser light source 43 is driven by a laser light source driver 41 and emits blue laser light in the same manner as the laser light source 42. The blue laser light emitted from the laser light source 43 strikes the phosphor of the phosphor wheel 45 and is converted into yellow light 45 a and enters the light splitting unit 46. The spectroscopic unit 46 separates the yellow light 45a by the wavelength component, and the separated red light 20b and green light 20c enter the liquid crystal panel 22b and the liquid crystal panel 22c, respectively.

  The projector 1 also includes a video input unit 12 having an interface 11 and a conversion processing unit 13 that performs a scaling process on image data input to the video input unit 12. The conversion processing unit 13 executes conversion processing of resolution of image data and the like, and outputs the processed image data to the control unit 10. The image data input to the projector 1 may be moving image (video) data, but may be still image data.

The image processing system of the projector 1 is configured around a control unit 10 that controls the entire projector 1 in an integrated manner. The projector 1 also includes a storage unit 15, an input processing unit 16, an image processing unit 31, and a liquid crystal panel driver 33. The storage unit 15 stores data processed by the control unit 10 and a control program executed by the control unit 10. The input processing unit 16 detects a user operation by a remote controller (not shown) or an operation panel. The image processing unit 31 processes the image data and develops the image signal in the frame memory 32. The liquid crystal panel driver 33 drives the liquid crystal panels 22 a, 22 b and 22 c of the light modulation device 22 based on the image signal output from the image processing unit 31 to perform drawing.
The control unit 10 controls each unit of the projector 1 by reading and executing the control program stored in the storage unit 15. The control unit 10 detects the content of the operation performed by the user based on the operation information input from the input processing unit 16, and the image processing unit 31, the liquid crystal panel driver 33, and the projection optical system drive unit according to this operation. 34 and the pulse output unit 52 are controlled to project an image on the screen SC.

The projector 1 further includes a cooling fan 53 and a power supply unit 54 in the exterior housing 2. The cooling fan 53 takes in the cooling air into the exterior housing 2 through the air supply port described later, and is operated based on the control of the control unit 10. The cooling fan 53 mainly sends air to the laser light sources 42, 43 to cool the laser light sources 42, 43. In addition, air is sent to a heat radiating portion of a heat pipe (not shown) connected to each of the liquid crystal panels 22a to 22c of the light modulation device 22 to indirectly cool the liquid crystal panels 22a to 22c.
The rotational speed (air volume) of the cooling fan 53 is controlled by the control unit 10 based on the detection temperature of the laser light sources 42 and 43 or a temperature sensor (not shown) provided on the heat pipe. Usually, the operation of the cooling fan 53 is finely controlled because the laser light source has a required target cooling temperature lower (for example, 40 degrees or less) than other light sources.
The power supply unit 54 supplies power to each part of the projector 1, and is provided with a rectification filter 54a for rectifying the input power.

FIG. 3 is a schematic view showing the configuration of the back surface portion 8 in a state in which the projector 1 is installed in the normal posture, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.
In the projector 1, as shown in FIGS. 3 and 4, a signal terminal in which a signal cable 70 (connection cable) extending from an image supply device is connected to the back surface (the same surface, side surface) 8 of the exterior housing 2 A portion 60 (first connection terminal portion) is provided. The projector 1 further includes a power supply terminal portion 61 (second connection terminal portion) to which a power supply cable 72 (connection cable) for supplying power to the power supply unit 54 is connected. Further, as shown in FIG. 3, the back surface portion (the same surface, side surface portion) 8 of the exterior housing 2 includes air for the heat sources connected to the laser light sources 42 and 43 and the liquid crystal panels 22a to 22c. Are provided with first to third air supply ports 91 to 93.
In general, a projector provided with a laser light source tends to form a large air supply port in order to efficiently cool the laser light source.
In the present embodiment, the projector 1 is provided with the signal terminal unit 60, the power supply terminal unit 61, and the first to third air supply ports 91 to 93 in the same back surface portion 8. Has been.

  As shown in FIG. 3, the back surface portion 8 includes a base 81, a first recess 82 recessed inward from the base 81, and a second recess 83 in which a portion of the first recess 82 is further recessed inward. Prepare. Further, on the back surface portion 8, an upright wall portion 90 projecting in the vertical direction from the back surface portion 8 is formed around the back surface portion 8. The standing wall portion 90 is notched on the bottom surface portion 4 side, and is formed around the bottom surface portion 4 side.

The base portion 81 is provided at the outermost portion of the back surface portion 8 and in the present embodiment, in the left half region and the right end region of the back surface portion 8.
A first air supply port 91 and a second air supply port 92 are arranged side by side in the left side base 81, and a third air supply port 93 is arranged in the first recess 82. A grid is provided at each of the air supply ports to prevent foreign matter from entering the exterior housing 2. In particular, the second air supply port 92 disposed at the center is configured to be provided with a dustproof filter on the grid, and prevents dust from entering the optical system such as a laser light source.

The first concave portion 82 is a region provided between the left and right base portions 81, 81, and the third air inlet 93 is disposed in the first concave portion 82, and the third air inlet 93 The power supply terminal portion 61 (second connection terminal portion) is disposed between the second air supply port 92 and the second power supply port 92.
Further, in the first concave portion 82, a second concave portion 83 is provided on the side farther from the bottom surface portion 4 than the power supply terminal portion 61 and the third air supply port 93, that is, on the top surface portion 3 side. The second recess 83 is formed in a substantially rectangular shape so that its longitudinal direction extends along the top surface portion 3. At the bottom of the second recess 83, a signal terminal portion 60 (first connection terminal portion) connected to an external image supply device via a signal cable 70 is formed.

The power supply terminal unit 61 is connected to the power supply unit 54 via the rectifying filter 54a as shown in FIG. 4 and supplies power to the power supply unit 54 through a power supply cable 72 connected to a commercial power supply or the like.
The power supply terminal portion 61 is formed such that the distance d in the depth direction (depth direction) is equal to or less than the distance between the base portion 81 and the first recess 82 as shown in FIG. 61 does not protrude outward from the base 81.
Further, the power supply terminal portion 61 can insert the power supply cable 72 in a direction along the back surface portion 8 (base portion 81) from the bottom surface portion 4 side of the exterior housing 2, that is, in a direction parallel to the back surface portion 8 (base portion 81). Is formed. Specifically, the power supply terminal portion 61 has a terminal extending toward the bottom surface portion 4, and the connector 72A of the power supply cable 72 can be inserted into the terminal from the bottom surface portion 4 side.
In this configuration, when the connector 72A of the power supply cable 72 is inserted into the power supply terminal 61, the power supply cable 72 extends in the space 84 between the first recess 82 and the base 81 toward the bottom 4 and It can be pulled out through the four-side cutout 90A.
Therefore, when the power cable 72 is connected to the power terminal portion 61, the power cable 72 is prevented from protruding in the direction perpendicular to the back surface portion 8. Thereby, while improving the external appearance of the projector 1, the installation space of the projector 1 can be restrained smaller.
Furthermore, since the power supply terminal portion 61 is disposed between the second air supply port 92 and the third air supply port 93, the power supply cable 72 connected to the power supply terminal portion 61 is the second air supply port 92 and the third 3. Blocking of the three air supply ports 93 is prevented. Thus, the amount of air supplied from the second air supply port 92 and the third air supply port 93 can be secured, and the laser light sources 42 and 43 and the heat pipe can be sufficiently cooled.
In the present embodiment, the power terminal portion 61 is formed so that the connector 72A of the power cable 72 can be inserted from the bottom surface portion 4 side. However, if the direction is along the back surface portion 8 (base portion 81), Of course, it is not limited to this.

  On the other hand, the signal terminal unit 60 functions as the interface 11 described above, and includes signal terminals 62 conforming to various communication standards. The signal terminal 62 is, for example, a DVI (Digital Visual Interface) interface to which a digital video signal is input, a USB interface and a LAN interface, an S video terminal to which composite video signals such as NTSC, PAL and SECAM are input, and composite video RCA terminals to which signals are input, D terminals to which component video signals are input, HDMI connectors conforming to the HDMI (registered trademark) standard, and signal terminals conforming to the DisplayPort (trademark) standard formulated by the VESA (Video Electronics Standards Association) (Signal input terminal) and the like.

Further, as shown in FIG. 4, these signal terminals 62 are mounted on a main substrate 63 and an interface substrate 64 on which the control unit 10 and the like are provided. The interface board 64 is disposed for the purpose of supplementing signal terminals not mounted on the main board 63. For this reason, the projector 1 can be provided with a signal terminal unit 60 including various signal terminals used by the user.
In the present embodiment, the signal terminal portion 60 is provided at the bottom of the innermost recessed second concave portion 83 in the back surface portion 8. Each signal terminal 62 of the signal terminal unit 60 is disposed so that the connector 70A of the signal cable 70 can be inserted in the direction opposite to the back surface 8, that is, in the direction perpendicular to the back surface 8.
In this configuration, the signal cable 70 is bent to the bottom surface portion 4 in a state where the connector 70 </ b> A of the signal cable 70 is inserted into each signal terminal 62 of the signal terminal portion 60, so that the signal cable 70 protrudes from the back surface portion 8. Can be reduced. Specifically, the signal cable 70 can be accommodated in the space 84 between the first recess 82 and the base 81, and can be pulled out through the cutout 90A on the bottom surface 4 side. Thereby, while improving the external appearance of the projector 1, the installation space of the projector 1 can be restrained smaller.
Furthermore, in the present embodiment, the power supply cable 72 and the signal cable 70 can be pulled out through the cutout 90A on the bottom surface 4 side. Since the projector 1 is installed as the bottom surface 4 as the installation surface, the appearance of the projector 1 can be improved by making the power cable 72 and the signal cable 70 less likely to be exposed to the outside in the installed state.
Further, in the present embodiment, since the signal terminal portion 60 is provided at the bottom of the innermost recessed second concave portion 83 in the back surface portion 8, the signal terminal portion 60 can be disposed at a position away from the power terminal 61. For this reason, the influence of the noise contained in the power supply to the video signal and audio | voice signal input into the signal terminal part 60 can be suppressed.

Further, in the first concave portion 82, between the second air supply port 92 and the third air supply port 93, in other words, between the power supply terminal portion 61 and the third air supply port 93, the signal terminal portion 60. A bundling member 94 for bundling the signal cables 70 connected to the signal terminals 62 is provided.
In the present embodiment, the signal terminal portions 60 are arranged laterally in the longitudinal direction of the second recess 83 extending along the top surface portion 3 in order to secure the installation space of the signal terminals 62. For this reason, the third air supply port 93 is positioned on the bottom surface 4 side of the second concave portion 83, and the signal terminal portion 60, when the signal cable 70 is simply connected to the signal terminal 62, this signal cable 70 overlaps the third air inlet 93. Thereby, there is a possibility that the amount of air supplied from the third air supply port 93 cannot be secured to ten parts.
As described above, the binding member 94 is provided in the first recess 82 between the power supply terminal portion 61 and the third air supply port 93. Therefore, as shown in FIG. 5, even the signal cable 70 connected to the signal terminal 62 between the third air supply port 93 and the top surface portion 3 does not overlap the third air supply port 93. The signal cable 70 can be bundled. As a result, the amount of air supplied from the third air supply port 93 can be secured, and the laser light sources 42 and 43 and the heat pipe can be sufficiently cooled.

FIG. 6 is an external view showing a use mode of the projector 1 of the present embodiment. FIG. 6 is a perspective view of a state where the projector 1 is installed in a normal installation posture as viewed from the upper rear side.
As shown in FIG. 6, the projector 1 includes an upright wall 90 erected around the back face 8, and a cover member 95 is attached to the upright wall 90. The cover member 95 includes a frame 95A and a lattice portion 95B disposed in the frame 95A and is formed in a flat plate shape, and prevents the cover member 95 from largely protruding from the back surface portion 8 Yes.
In addition, the cover member 95 includes the lattice portion 95B, thereby allowing ventilation through the gap between the lattice portions 95B. For this reason, even if the cover member 95 is provided, the flow of the air to the respective air supply ports 91 to 93 provided in the back face portion 8 is not greatly impeded.
Furthermore, since the cover member 95 includes the lattice portion 95B, the signal terminal portion 60 and the power supply terminal portion 61 are not exposed to the outside in the installed state of the projector 1, so that the appearance of the projector 1 can be improved.

As described above, according to the present embodiment, the light modulation device 22 that modulates the light emitted from the light source unit 21 to form an image, and the projection optics that projects the image formed by the light modulation device 22 In the projector 1, the external housing 2 includes a signal terminal portion 60 and a power supply terminal portion 61 to which the signal cable 70 and the power cable 72 are respectively connected. In the back part 8 of the The signal terminal portion 60 is disposed behind the power supply terminal portion 61 so that the connector 70A of the signal cable 70 can be inserted in a direction perpendicular to the back surface portion 8, and the power supply terminal portion 61 is connected to the signal terminal portion 60. The connector 72A of the power supply cable 72 is disposed on the front side of the rear side 8 so as to be inserted in a direction parallel to the back surface portion 8.
According to this, in a state where the signal cable 70 is connected to the signal terminal portion 60 and the power cable 72 to the power terminal portion 61, the signal cable in the direction perpendicular to the back surface portion 8 in the back surface portion 8 of the exterior housing 2 70 and the protruding amount of the power cable 72 can be kept small. Therefore, even when the signal cable 70 and the power cable 72 are connected to the signal terminal portion 60 and the power terminal portion 61, respectively, the configuration can be preferable from the appearance, and the installation space of the projector 1 can be further reduced. .

Further, according to the present embodiment, the exterior housing 2 includes the bottom surface portion 4 for fixing and mounting the exterior housing 2 and the back surface portion 8 provided continuously to the bottom surface portion 4, and the back surface portion 8. Are provided with a signal terminal portion 60 and a power supply terminal portion 61. The power supply terminal portion 61 is arranged so that the connector 72A of the power supply cable 72 can be inserted from the bottom surface portion 4 side. A second recess 83 recessed toward the inside is formed on the side far from 4, and the signal terminal portion 60 is disposed at the bottom of the second recess 83.
According to this, when the connector 72A of the power cable 72 is inserted into the power terminal 61, the power cable 72 extends in the space 84 between the first recess 82 and the base 81 toward the bottom 4 and It can be pulled out through the notch 90A on the part 4 side. Therefore, when the power cable 72 is connected to the power terminal portion 61, the power cable 72 is prevented from protruding in the direction perpendicular to the back surface portion 8.
Further, by bending the signal cable 70 to the bottom surface portion 4 with the connector 70 </ b> A of the signal cable 70 inserted into each signal terminal 62 of the signal terminal portion 60, a space 84 between the first recess 82 and the base portion 81. Can accommodate the signal cable 70. Furthermore, by being able to pull out to the outside through the notch 90A on the bottom surface 4 side, the appearance of the projector 1 can be improved, and the installation space of the projector 1 can be further reduced.

  Further, according to the present embodiment, the exterior casing 2 includes the second air inlet 92 and the third air inlet 93 that introduce cooling air into the outer casing 2 side by side on the back surface portion 8, A power supply terminal 61 is provided between the second air supply port 92 and the third air supply port 93. For this reason, the power supply cable 72 connected to the power supply terminal portion 61 is prevented from closing the second air supply port 92 and the third air supply port 93. As a result, the amount of air supplied from the second air supply port 92 and the third air supply port 93 can be secured, and each component (for example, the laser light sources 42 and 43 and the heat pipe) in the exterior housing 2 is sufficiently Can be cooled.

  Further, according to the present embodiment, the signal terminal portion 60 is disposed on the side farther from the bottom surface portion 4 than at least the third air supply port 93, and between the third air supply port 93 and the second air supply port 92. A bundling member 94 is provided for bundling and bundling the signal cable 70 connected to the signal terminal 62 of the signal terminal unit 60. For this reason, even if it is the signal cable 70 connected to the signal terminal 62 between the 3rd air supply opening 93 and the top | upper surface part 3, this signal cable 70 is bound without overlapping with the 3rd air supply opening 93. Can. As a result, the amount of air supplied from the third air supply port 93 can be secured, and each part (for example, the laser light sources 42 and 43 and the heat pipe) in the exterior housing 2 can be sufficiently cooled.

Further, according to the present embodiment, the exterior housing 2 includes the standing wall portion 90 erected around the back surface portion 8, and the flat cover member 95 is disposed on the standing wall portion 90. Therefore, the appearance of the projector 1 can be improved because the signal terminal unit 60 and the power supply terminal unit 61 are not exposed to the outside when the projector 1 is installed.
Further, according to the present embodiment, since the cover member 95 includes the grid portion 95B which can ventilate, even if the cover member 95 is provided, the air supply ports 91 to 93 provided in the back surface portion 8 are provided. Air flow is not significantly impeded.

The above-described embodiment is an example to which the present invention is applied, and the present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the scope of the present invention. Of course.
For example, in the above embodiment, the signal terminal portion 60 and the power supply terminal portion 61 are provided on the back surface portion 8 of the exterior housing 2, but of course the present invention is not limited to this.
Moreover, although three air supply openings are provided in this embodiment, if it is plural, the number of air supply openings is not limited.

Further, in the present embodiment, the light source unit 21 includes the laser light sources 42 and 43. However, the light source unit 21 may include a light source made of an LED, and further may be a discharge type such as a xenon lamp or a super high pressure mercury lamp. The light source lamp of
Further, in the present embodiment, the light modulation device 22 is configured to use the three liquid crystal panels 22a to 22c, but the present invention is not limited to this. For example, a method combining one liquid crystal panel and a color wheel, a method using three digital mirror devices (DMD) that modulate color light of each color of RGB, a combination of one digital mirror device and a color wheel It is also possible to adopt a scheme.

  DESCRIPTION OF SYMBOLS 1 ... projector, 2 ... exterior case (casing), 3 ... top face part, 4 ... bottom face part (installation face part), 8 ... back face part (the same face, side part), 21 ... light source part, 22 ... light modulation Device (light modulation unit) 23 Projection optical system (optical unit) 60 Signal terminal unit (first connection terminal unit) 61 Power supply terminal unit (second connection terminal unit) 70 Signal cable (connection cable , 70A: connector, 72: power cable (connection cable), 72A: connector, 80: base, 81: first recess, 82: second recess (recess), 92: second air supply opening (air supply opening) 93: third air supply port (air supply port, one air supply port) 94: binding member 95: cover member 95B: lattice portion

Claims (6)

A projector comprising a light modulation unit that modulates light emitted from a light source unit to form an image, and an optical unit that projects an image formed by the light modulation unit in a housing,
The housing includes an installation surface for fixing and installing the housing, and a side surface provided around the installation surface, and a first connection to which a first connection cable is connected to one side surface A second connection terminal portion to which the terminal portion and the second connection cable are connected;
The one side portion has a base and a recess recessed inward from the base,
The first connection terminal portion is disposed to the connector of the first connecting cable to plug in a direction opposite to the side surface portion of the one,
The second connection terminal portion is disposed so that the connector of the second connection cable can be inserted from the side of the installation surface portion.
The first connection terminal portion is provided in the recess,
The projector according to claim 1, wherein the second connection terminal does not project in a direction facing the one side surface portion more than the base. The housing includes a plurality of air inlets for introducing cooling air into the housing on the one side surface portion,
The projector according to claim 1, wherein a first air supply port is provided in the concave portion among the plurality of air supply ports.   A binding member for binding the first connection cable connected to the first connection terminal portion is provided between the second connection terminal portion and the first air supply port. The projector according to claim 2.   4. The projector according to claim 1, wherein the base portion is located on the outermost side in the direction facing the one side surface portion of the one side surface portion. 5. The housing includes an upright wall erected around the one side face, and a flat cover member is disposed on the upright wall.
5. The projector according to claim 1, wherein the cover member includes a lattice portion through which ventilation can be performed.   The first connection terminal unit includes at least a signal input terminal to which an image signal from an external device is input, and the second connection terminal unit is a power supply terminal to which a power cable is connected. The projector in any one of claim 1 to 5.

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