Image display device for vehicles

Abstract

The present invention provides an image display device for vehicles which has good heat exhaust efficiency. This image display device 1 for vehicles comprises: a case 2; a camera 3 that is attached to the case 2; a display unit 4 that is attached to the case 2 and that displays information pertaining to the surroundings of a vehicle imaged by the camera 3; a recording unit 5 that is disposed inside the case 2 and that records information pertaining to the surroundings of the vehicle imaged by the camera 3; a control unit 6 that is disposed inside the case 2 and that controls the camera 3, the display unit 4, and the recording unit 5; and a heat sink 7 that is disposed inside the case 2 and that dissipates the heat of the control unit 6, wherein a fan 8 that ventilates the inside of the case 2 is provided to the case 2. As a result, this image display device 1 for vehicles has good heat exhaust efficiency.

Description

Vehicle image display device

[0001] The present invention relates to an image display device for a vehicle.

[0002] 2. Description of the Related Art An example of an image display device for a vehicle, a so-called drive recorder, is disclosed in Japanese Patent Application Laid-Open No. 2003-222999.

[0003] The drive recorder of Patent Document 1 includes a camera unit, a control unit, and a housing that houses the camera unit and the control unit. The housing has a first heat dissipation unit and a second heat dissipation unit, each having fins extending in the vertical direction, at both ends in the horizontal direction when in the usage position.

[0004] In the drive recorder of Patent Document 1, heat generated in the control unit is transferred to the fins of the first heat dissipation unit and the second heat dissipation unit, and is efficiently discharged to the outside from the fins. In this way, the drive recorder of Patent Document 1 has excellent heat dissipation efficiency. As such, good heat dissipation efficiency is important for a vehicle image display device.

[0005] Japanese Patent Application Laid-Open No. 2020-199800

[0006] The present invention provides an image display device for a vehicle that has good heat dissipation efficiency.

[0007] In order to solve the above-mentioned problems, a vehicle image display device according to a first aspect of the present invention comprises a case to be attached to a predetermined location inside the vehicle, a camera attached to the case, a display unit attached to the case and displaying information about the surroundings of the vehicle photographed by the camera, a recording unit disposed within the case and recording information about the surroundings of the vehicle photographed by the camera, a control unit disposed within the case and controlling the camera, the display unit and the recording unit, and a heat dissipation member disposed within the case and dissipating heat from the control unit, and is characterized in that a fan for ventilating the inside of the case is provided in the case.

[0008] In the vehicle image display device of the present invention, it is preferable that a gap be formed between the case and the camera.

[0009] In the vehicle image display device of this invention, it is preferable that the case has a first case, a second case, and an attachment portion that is attached to the specified location, and that the case is divided into two cases, the first case and the second case, the display portion is attached to the first case, the camera is attached to the second case, and the fan is sandwiched between the first case and the second case.

[0010] In the vehicle image display device of this invention, it is preferable that the case has an air intake and an exhaust port, the air intake port being provided in a part of the case facing the fan or being carried by the fan provided in the case, and the exhaust port being provided in at least a part of the case facing the camera.

[0011] In the vehicle image display device of this invention, it is preferable that the exhaust port has at least one of a camera-side exhaust port provided in a portion facing the camera, a downstream-side exhaust port provided in a portion opposite the fan relative to the portion where the camera-side exhaust port is provided, or an attachment-side exhaust port provided between the camera-side exhaust port and the attachment portion.

[0012] In the vehicle image display device of this invention, it is preferable that the heat dissipation member has a substrate portion and a plurality of rod members arranged vertically and horizontally on the substrate portion, and that the plurality of rod members divert the air drawn in by the fan into the axial direction of the fan and a direction intersecting the axial direction.

[0013] In the vehicle image display device of this invention, it is preferable that the control unit has a substrate and a control element mounted on the substrate, the heat dissipation member is attached to the substrate via an intervening member so as to sandwich the control element between the substrate and the control element, a through hole is provided in the portion of the intervening member corresponding to the control element, a heat conduction sheet is arranged in the through hole, and the heat conduction sheet is interposed between the control element and the heat dissipation member.

[0014] The vehicle image display device of the present invention has good heat dissipation efficiency.

[0015] FIG. 1 is a rear view showing an embodiment of a vehicle image display device according to the present invention. FIG. 2 is an exploded perspective view showing the components. FIG. 3 is a rear view with the front case removed, showing the ventilation state inside the case. FIG. 4 is an explanatory diagram showing a fan and the area around the fan. FIG. 5 is a partial perspective view showing an air intake port. FIG. 6 is a partial perspective view showing a heat sink. FIG. 7 is a partial rear view with the camera removed, showing the camera housing section.

[0016] Hereinafter, embodiments of the vehicle image display device according to the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially the same.

[0017] In this specification and the appended claims, the terms "front," "rear," "up," "down," "left," and "right" refer to the front, rear, top, bottom, left, and right directions when the vehicular image display device according to the present invention is mounted on a vehicle. The terms "front," "rear," "up," "down," and "left" refer to the directions when the vehicular image display device is mounted on a vehicle and viewed from the driver's seat in the direction of travel of the vehicle. The "front" direction is the direction of travel of the vehicle, i.e., the forward and backward directions, the "up" and "down" direction is parallel to the vertical direction, and the "left" direction is horizontal. Regarding the "front" and "rear" directions, the rearward direction is the frontward direction, and the frontward direction, which is opposite to the frontward direction, is the rearward direction.

[0018] Since the drawings are schematic diagrams showing the vehicle image display device according to the present invention, only the main components of the vehicle image display device according to the present invention are shown, and components other than the main components are omitted. Also, some hatching has been omitted. Furthermore, in the drawings, the symbols "F" represent "front," "B" represent "rear," "U" represent "up," "D" represent "down," "L" represent "left," and "R" represent "right."

[0019] (Description of Configuration of the Embodiment) Hereinafter, the configuration of the vehicle image display device according to this embodiment will be described.

[0020] 1 and 2, the vehicle image display device 1 according to this embodiment includes a case 2, a camera 3, a display unit 4, a recording unit 5, a control unit 6, a heat sink 7 as a heat dissipation member, and a fan 8. The vehicle image display device 1 also includes a microphone, a GPS receiving unit, an acceleration sensor, and the like, which are not shown.

[0021] The vehicle image display device 1 is detachably and rotatably mounted to a predetermined location in the interior of a vehicle (not shown), in this example, the ceiling, via a stay 10. The stay 10 has a fixed portion at one end and a pivot at the other end. The fixed portion at one end of the stay 10 is fixed to the ceiling of the interior of the vehicle, and the vehicle image display device 1 is detachably and rotatably mounted to the pivot at the other end of the stay 10. The vehicle image display device 1 is tiltable relative to the stay 10 within a predetermined angle range.

[0022] (Description of Case 2) The case 2 is attached to a predetermined location inside the vehicle cabin. As shown in Figures 1, 2, and 3, the case 2 has a rear case 20 as a first case, a front case 21 as a second case, and an attachment portion 22. The case 2 is divided into two parts, the rear case 20 and the front case 21, in the front and rear directions.

[0023] An attachment portion 22 is provided in the center portion of the upper wall of the case 2. In this example, the attachment portion 22 is made up of a pivot receiver, and is detachably and rotatably attached to the pivot of the stay 10. In this way, the case 2 is attached to the ceiling inside the vehicle.

[0024] An insertion slot 23 is provided in the lower portion of the left wall of the case 2. An SD card as an external memory is inserted into the recording unit 5 inside the vehicle image display device 1 through this insertion slot 23 so as to be removable.

[0025] (Description of rear case 20) As shown in Fig. 2, the rear case 20 has a frame shape with an opening in the center. Therefore, an opening 200 is formed in the center of the rear case 20. The display unit 4 is arranged in the opening 200 of the rear case 20.

[0026] 1, 2, 4, 5, and 7, the front case 21 has a cover shape with the entire rear wall being open. That is, the front case 21 is made up of a front wall 21F, an upper wall 21U, a left side wall 21L, a right side wall 21R, and a lower wall 21D.

[0027] 1 and 2, a first exhaust port 211 is provided in the lower central portion of the front wall 21F. The first exhaust port 211 is composed of a number of rectangular holes and a number of square holes provided on the top, bottom, left, and right sides.

[0028] A camera housing section 24 and a communication section 25 are provided in a portion of the front wall 21F to the right of the first exhaust port 211. The camera housing section 24 and the communication section 25 are recessed. The camera housing section 24 and the communication section 25 are in communication with each other. The communication section 25 is provided from the camera housing section 24 to the right side of the front case 21.

[0029] The bottom wall 240, upper wall 241, and lower wall 242 of the camera housing section 24 and the bottom wall 250, upper wall 251, and lower wall 252 of the communication section 25 are provided as a continuous, integrated unit. A left wall 243 is formed on the left side of the camera housing section 24. On the other hand, no wall is formed on the right side of the communication section 25, and only the bottom wall 250, upper wall 251, and lower wall 252 are located there.

[0030] 2 and 7, a second exhaust port 212 is provided in the bottom wall 240 of the camera housing section 24 as a camera-side exhaust port. Similar to the first exhaust port 211, the second exhaust port 212 is composed of a number of rectangular holes and a number of square holes provided on the top, bottom, left, and right sides. The second exhaust port 212 has a large number of holes, and the opening area of ​​the second exhaust port 212 accounts for a large proportion of the area of ​​the bottom wall 240, approximately 50% in this example.

[0031] A tongue-shaped recess 244 is provided in the upper wall 241 and the lower wall 242 of the camera housing portion 24, and a screw hole 245 is provided in the tongue-shaped recess 244. The camera 3 is housed in the camera housing portion 24.

[0032] On the other hand, the communication section 25 is covered by a communication cover 320 of the camera 3. The communication cover 320 constitutes part of the case 2. The communication section 25 is disposed to the right of the second exhaust port 212 on the bottom wall 240 of the camera housing section 24. Therefore, the communication cover 320 is disposed to the right of the second exhaust port 212. As shown in FIG. 1 , a third exhaust port 213 serving as a downstream exhaust port is provided on the right wall of the communication cover 320. The third exhaust port 213 is composed of a number of rectangular holes provided above and below. The third exhaust port 213 is provided on the opposite side of the second exhaust port 212 from the fan 8.

[0033] 1, a fourth exhaust port 214 is provided on the right side of the upper wall 21U as a downstream exhaust port. The fourth exhaust port 214 is composed of one or more rectangular holes. The fourth exhaust port 214 is provided on the upper side of the second exhaust port 212, on the opposite side from the fan 8.

[0034] 1 and 3, a fifth exhaust port 215 is provided in the center of the case 2 as an attachment-side exhaust port. The fifth exhaust port 215 is formed by a gap between the case 2 and the attachment portion 22.

[0035] As shown in Figures 1, 2, 4, and 5, an air intake 210 is provided in a portion of the front wall 21F below and to the left of the first exhaust port 211 and extending to the lower wall 21D. The air intake 210 is composed of multiple rectangular holes provided on the left and right sides. The holes of this air intake 210 form an L-shape from the lower portion of the front wall 21F to the lower wall 21D. Therefore, the opening area of ​​the air intake 210 is larger than the opening area of ​​an air intake provided only in the lower wall 21D.

[0036] The intake port 210 is located to the left and below the first exhaust port 211, the second exhaust port 212, the third exhaust port 213, the fourth exhaust port 214, and the fifth exhaust port 215. The first exhaust port 211, the second exhaust port 212, and the third exhaust port 213 are arranged in the left-right direction. The fourth exhaust port 214 is located above the second exhaust port 212 and the third exhaust port 213. The fifth exhaust port 215 is located above the first exhaust port 211.

[0037] As shown in FIG. 4, a fan fixing portion 216 is provided in the lower portion of the front wall 21F near the intake port 210.

[0038] (Explanation of Camera 3) As shown in FIG. 1 , the camera 3 has a main body 30, a lens 31 provided on the main body 30, and a cover 32 that covers the main body 30. An imaging element such as a CMOS is built into the main body 30 on the opposite side of the lens 31. The imaging element is not shown. The lens 31 has a wide angle of view. That is, the lens 31 can capture a wide range of scenery and information about the surroundings of the vehicle. The lens 31, together with the main body 30, can be tilted up, down, left, and right relative to the cover 32. That is, the lens 31 can move up, down, left, and right within the range to be captured, and the information about the surroundings of the vehicle.

[0039] Mounting pieces 33 are integrally provided on the top and bottom of the cover 32. The mounting pieces 33 are provided to correspond to the tongue-shaped recesses 244 of the camera housing portion 24. The mounting pieces 33 are provided with through-holes. Note that the through-holes are not shown. The camera 3 is detachably attached while housed in the camera housing portion 24 of the case 2 by passing a screw 34 through the through-hole of the mounting piece 33 and threading it into a screw hole 245 in the bottom wall 240. In this state, the lens 31 is outside the case 2 and faces the front of the vehicle, and the portion of the main body 30 opposite the lens 31 faces the second exhaust port 212 on the bottom wall 240 of the camera housing portion 24. Note that, although not shown, a gap is formed between the portion of the main body 30 opposite the lens 31 and the bottom wall 240 of the camera housing portion 24. This gap is formed between the second exhaust port 212 and the third exhaust port 213 and is in communication with the second exhaust port 212 and the third exhaust port 213 .

[0040] A communication cover 320 is attached separately to the right side of the cover 32. The communication cover 320 has an upper wall, a lower wall, and a right wall. The communication cover 320 covers the communication portion 25 of the case 2. As described above, the third exhaust port 213 is provided on the right wall of the communication cover 320. Note that in this example, the communication cover 320 is attached separately to the right side of the cover 32 of the camera 3, but the communication cover 320 may also be provided integrally with the cover 32 of the camera 3.

[0041] 2, the display unit 4 is a liquid crystal display and includes a liquid crystal panel 40 and a holding member 41 that holds the liquid crystal panel 40. The liquid crystal panel 40 displays information about the surroundings of the vehicle captured by the camera 3. The liquid crystal panel 40 can display information about the surroundings of the vehicle captured by external cameras other than the camera 3 of the vehicle image display device 1, such as a rear camera, a left camera, a right camera, and other cameras, up to a maximum of five cameras including the camera 3 of the vehicle image display device 1.

[0042] The holding member 41 is sandwiched between the rear case 20 and the front case 21 of the case 2. The holding member 41, the rear case 20, and the front case 21 are attached together with the mounting screws 26. As a result, the display unit 4 is attached to the case 2, and the liquid crystal panel 40 of the display unit 4 is disposed in the opening 200 of the rear case 20.

[0043] A fan fixing portion 42 such as a bracket is provided on the holding member 41 so as to face the fan fixing portion 216 of the case 2. The fan fixing portion 42 of the display unit 4 and the fan fixing portion 216 of the case 2 sandwich and fix the fan 8.

[0044] (Explanation of Recording Unit 5) As shown in Figures 2 and 3, the recording unit 5 is mounted on the board 60 of the control unit 6 in correspondence with the insertion slot 23 of the case 2. The recording unit 5 records information about the surroundings of the vehicle obtained by the camera 3 as electronic data on an SD card of external memory inserted through the insertion slot 23 of the case 2. The recording unit 5 also has an internal memory built in, which can temporarily record information about the surroundings of the vehicle obtained by the camera 3. Furthermore, the recording unit 5 stores voice obtained by the microphone, position information obtained by the GPS receiving unit, acceleration obtained by the acceleration sensor, etc.

[0045] (Explanation of control unit 6) As shown in Figures 2 and 3, the control unit 6 has a substrate 60 and electronic components 61 as control elements. The substrate 60 is attached to the holding member 41 of the display unit 4 with screws 63 via a gasket 62. The recording unit 5, electronic components 61, a drive circuit, etc. are mounted on the substrate 60. The drive circuit outputs and supplies electrical signals to the camera 3, the liquid crystal panel 40, the recording unit 5, and the fan 8, and inputs electrical signals from the camera 3, the liquid crystal panel 40, and the recording unit 5. In other words, the control unit 6 controls the camera 3, the display unit 4, the recording unit 5, and the fan 8.

[0046] The electronic components 61 include a CPU, a GPU, and a capacitor. The CPU and GPU are configured, for example, from an FPGA or SoC chip. The control unit 6 generates heat when it is driven. That is, the CPU generates heat when the GPU is operated. The CPU, which is a heat source, is located on the board 60 above the air intake 210 of the case 2.

[0047] (Explanation of Heat Sink 7) As shown in Figures 2, 3, and 6, the heat sink 7 has a pinholder structure including a base 70 and multiple rod members 71 arranged vertically and horizontally on one surface of the base 70. As shown by the white arrows in Figure 3, the multiple rod members 71 divide the air A drawn in by the fan 8 into the axial direction of the fan 8, in this example, the upward direction, and a direction intersecting the axial direction, in this example, the rightward direction. Note that although the flow direction of the air A is upward and rightward in this example, it can be directed in any direction other than upward and rightward by using a wall or the like provided on the inner surface of the front case 21. Illustration of the walls and the flow of the air A in any direction are omitted.

[0048] The heat sink 7 is disposed in the case 2 near the heat source of the control unit 6. That is, the heat sink 7 is attached by screws 73 via an interposing member 72 to the portion of the board 60 above the air intake 210 of the case 2, where the CPU, which is the heat source, is mounted. That is, the heat sink 7 is attached to the board 60 via the interposing member 72 so as to sandwich the CPU between the heat sink 7 and the board 60.

[0049] The interposing member 72 is interposed between the substrate 60 of the control unit 6 and the substrate portion 70 of the heat sink 7. A through hole 74 is provided in the interposing member 72 in a portion that corresponds to the CPU of the heat source, which is a control element. In this example, there are two through holes 74, but the number is not limited to this. A thermally conductive sheet 75 is disposed in the through hole 74. The thermally conductive sheet 75 is interposed between the control element and the substrate portion 70 of the heat sink 7. The heat sink 7 cools the heat source of the control unit 6 via the thermally conductive sheet 75, the substrate portion 70, and the rod member 71.

[0050] 2, 3, 4, and 5, the fan 8 has a rectangular tubular casing 80, a cylindrical hub 81, a plurality of propellers 82, and a cushion 83 attached to the outer peripheral surface of the casing 80. Note that Fig. 4(A) is an explanatory view showing a see-through state of the front case 21. Fig. 4(B) is an explanatory view showing a state with the front case 21 removed.

[0051] The fan 8 is sandwiched and fixed between the fan fixing portion 216 of the case 2 and the fan fixing portion 42 of the display unit 4. That is, the fan 8 is sandwiched between the rear case 20 on the fan fixing portion 42 side of the display unit 4 and the front case 21 on the fan fixing portion 216 side of the case 2. A cushion 83 is interposed between the casing 80 of the fan 8 and the fan fixing portion 216 of the case 2 and the fan fixing portion 42 of the display unit 4.

[0052] The hub 81 has a fixed portion and a rotating portion rotatably attached to the fixed portion. The fixed portion of the hub 81 is fixed to the casing 80, and the hub 81 is located at the center of the casing 80. A plurality of propellers 82 are fixed to the rotating portion of the hub 81.

[0053] The fan 8 is controlled by the control unit 6 to ventilate the inside of the case 2. That is, the fan 8 draws air A into the case 2 through the air intake 210 of the case 2, and exhausts the air A drawn into the case 2 to the outside of the case 2 through the first exhaust vent 211, the second exhaust vent 212, the third exhaust vent 213, the fourth exhaust vent 214, and the fifth exhaust vent 215.

[0054] The fan 8 is operated under the control of the control unit 6. The control unit 6 uses a set temperature as a threshold, and operates the fan 8 when the vehicle interior temperature reaches the set temperature. The control unit 6 has a preset set temperature as the threshold.

[0055] (Explanation of Operation of the Embodiment) The vehicle image display device 1 according to this embodiment is configured as described above, and its operation will be described below.

[0056] When the vehicle interior temperature reaches the threshold temperature setting, the control unit 6 activates the camera 3 , the display unit 4 , the recording unit 5 and the fan 8 .

[0057] The camera 3 captures information about the surroundings of the vehicle and outputs the captured information to the control unit 6. The control unit 6 outputs the information obtained by the camera 3 to the display unit 4. The display unit 4 displays the image captured by the camera 3 on the liquid crystal panel 40.

[0058] The recording unit 5 records the information obtained by the camera 3 in an internal memory or an external memory.

[0059] When the fan 8 operates, air outside the case 2 is drawn into the case 2 through the air intake 210. Air A inside the case 2 passes between the rod members 71 of the heat sink 7 and is divided into an upward direction, which is the axial direction of the fan 8, and a rightward direction, which is a direction intersecting the axial direction.

[0060] Heat generated by the CPU is conducted to the substrate portion 70 and the plurality of rod members 71 of the heat sink 7 via the thermally conductive sheet 75 , and is then discharged into the case 2 mainly through the plurality of rod members 71 .

[0061] The air A diverted upward in the axial direction of the fan 8 is mainly discharged to the outside of the case 2 through the fifth exhaust port 215 .

[0062] Meanwhile, a portion of the air A diverted to the right, which is a direction intersecting the axial direction of the fan 8, is discharged to the outside of the case 2 through the first exhaust port 211 and also to the camera housing section 24 through the second exhaust port 212. The air A discharged to the camera housing section 24 passes through the gap between the bottom wall 240 of the camera housing section 24 and the main body 30 of the camera 3, and through the gaps between the bottom wall 250, upper wall 251, and lower wall 252 of the communication section 25 and the communication cover 320 of the camera 3, and is then discharged to the outside of the case 2 through the third exhaust port 213. At this time, the camera 3 is cooled by the air A passing through the gap between the bottom wall 240 of the camera housing section 24 and the main body 30, thereby suppressing the effects of heat.

[0063] The remainder of the air A that is diverted to the right, which is a direction intersecting the axial direction of the fan 8, is exhausted to the outside of the case 2 through the fourth exhaust port 214 and the fifth exhaust port 215. In this way, the fan 8 ventilates the inside of the case 2. By ventilating the inside of the case 2, heat generated by the CPU is exhausted to the outside of the case 2. This reduces the influence of heat on the control unit 6.

[0064] (Explanation of Effects of the Embodiment) The vehicle image display device 1 according to this embodiment has the above-described configuration and functions, and the effects thereof will be described below.

[0065] The vehicle image display device 1 according to this embodiment is provided with a fan 8 for ventilating the inside of the case 2, and therefore has better heat dissipation efficiency than the drive recorder of Patent Document 1, which does not have a fan.

[0066] The vehicle image display device 1 in this embodiment has a gap between the case 2 and the camera 3, and by passing air A through this gap, the camera 3 is cooled and the effects of heat are suppressed.

[0067] In the vehicle image display device 1 according to this embodiment, the case 2 is divided into a rear case 20 and a front case 21, and the fan 8 is sandwiched between the fan fixing portion 42 of the rear case 20 and the fan fixing portion 216 of the front case 21. As a result, the size of the fan 8 in the vehicle image display device 1 according to this embodiment can be made larger by the size of the screw fixing portion compared to a fan attached to the case with screws. As a result, the vehicle image display device 1 according to this embodiment can increase the airflow volume of the fan 8 compared to a fan attached to the case with screws, resulting in good heat dissipation efficiency.

[0068] In the vehicle image display device 1 according to this embodiment, the air intake 210 is provided in a portion of the case 2 facing the fan 8, and a second exhaust port 212 among the multiple exhaust ports is provided in a portion of the case 2 facing the camera 3, i.e., in the bottom wall 240 of the camera housing portion 24. As a result, the vehicle image display device 1 according to this embodiment can direct the flow of air A inside the case 2 from the air intake 210 to at least the second exhaust port 212, so that the camera 3 can be cooled by the air A exhausted from the second exhaust port 212, resulting in good heat dissipation efficiency and suppressing the thermal impact on the camera 3.

[0069] The vehicle image display device 1 according to this embodiment has a plurality of exhaust ports, including a first exhaust port 211, a second exhaust port 212 that is a camera-side exhaust port, a third exhaust port 213 and a fourth exhaust port 214 that are downstream-side exhaust ports, and a fifth exhaust port 215 that is a mounting-portion-side exhaust port. As a result, the vehicle image display device 1 according to this embodiment can efficiently ventilate the inside of the case 2 and has good heat dissipation efficiency.

[0070] In the vehicle image display device 1 according to this embodiment, the heat sink 7 has a substrate 70 and a plurality of rod members 71 arranged vertically and horizontally on the substrate 70, and the rod members 71 divide the air A drawn in by the fan 8 into the axial direction of the fan 8 and a direction intersecting the axial direction. As a result, the vehicle image display device 1 according to this embodiment can efficiently ventilate the inside of the case 2 and has good heat dissipation efficiency.

[0071] In the vehicle image display device 1 according to this embodiment, the control unit 6 has a substrate 60 and an electronic component 61 as a control element mounted on the substrate 60, the heat sink 7 is attached to the substrate 60 via an intervening member 72 so as to sandwich the electronic component 61 between the substrate 60 and the heat sink 7, and a through hole 74 is provided in the intervening member 72 at a portion corresponding to the electronic component 61, and a thermally conductive sheet 75 is disposed in the through hole 74, and the thermally conductive sheet 75 is interposed between the electronic component 61 and the heat sink 7. As a result, the vehicle image display device 1 according to this embodiment can conduct heat generated in the electronic component 61 to the heat sink 7 via the thermally conductive sheet 75 and discharge the heat from the heat sink 7 into the case 2, thereby achieving high heat dissipation efficiency and protecting the control unit 6 from thermal effects.

[0072] (Explanation of Examples Other Than the Embodiment) In the above-described embodiment, the multiple exhaust ports are the first exhaust port 211, the second exhaust port 212 which is a camera-side exhaust port, the third exhaust port 213 which is a downstream-side exhaust port, the fourth exhaust port 214, and the fifth exhaust port 215 which is a mounting-portion-side exhaust port. However, in the present invention, it is sufficient that at least the second exhaust port 212 is provided. Alternatively, the second exhaust port 212 may be provided in combination with at least one of the third exhaust port 213, the fourth exhaust port 214, and the fifth exhaust port 215.

[0073] In the above embodiment, an example is described in which the air intake 210 is provided in a portion of the case 2 that faces the fan 8. However, in the present invention, the air intake may be provided by a suction-type fan 8 provided in the case 2.

[0074] DESCRIPTION OF SYMBOLS 1 Vehicle image display device 10 Stay 2 Case 20 Rear case 200 Opening 21 Front case 21D Lower wall 21F Front wall 21L Left side wall 21R Right side wall 21U Upper wall 210 Intake port 211 First exhaust port 212 Second exhaust port 213 Third exhaust port 214 Fourth exhaust port 215 Fifth exhaust port 216 Fan fixing portion 22 Mounting portion 23 Insertion port 24 Camera accommodating portion 240 Bottom wall 241 Upper wall 242 Lower wall 243 Left wall 244 Tongue-shaped recess 245 Screw hole 25 Communication portion 250 Bottom wall 251 Upper wall 252 Lower wall 26 Mounting screw 3 Camera 30 Main body 31 Lens 32 Cover 320 Communication cover 33 Mounting piece 34 Screw 4 Display unit 40 Liquid crystal panel 41 Holding member 42 Fan fixing portion 5 Recording unit 6 Control unit 60 Board 61 Electronic component 62 Gasket 63 Screw 7 Heat sink 70 Board portion 71 Rod member 72 Interposition member 73 Screw 74 Through hole 75 Heat conduction sheet 8 Fan 80 Casing 81 Hub 82 Propeller 83 Cushion B Rear D Bottom F Front L Left R Right U Top

Claims

1. An image display device for a vehicle comprising: a case to be attached to a predetermined location inside the vehicle; a camera attached to the case; a display unit attached to the case and displaying information about the vehicle's surroundings photographed by the camera; a recording unit disposed within the case and recording information about the vehicle's surroundings photographed by the camera; a control unit disposed within the case and controlling the camera, the display unit, and the recording unit; and a heat dissipation member disposed within the case and dissipating heat from the control unit; and a fan provided in the case to ventilate the inside of the case.

2. The vehicle image display device according to claim 1, wherein a gap is formed between the case and the camera.

3. The vehicle image display device according to claim 1, characterized in that the case has a first case, a second case, and an attachment part that is attached to the predetermined location, the case is divided into two parts, the first case and the second case, the display part is attached to the first case, the camera is attached to the second case, and the fan is sandwiched between the first case and the second case.

4. The vehicle image display device according to claim 1, characterized in that the case is provided with an air intake and an exhaust port, the air intake port is provided in a portion of the case facing the fan or is carried by the fan provided in the case, and the exhaust port is provided in at least a portion of the case facing the camera.

5. The vehicle image display device according to claim 3, characterized in that the exhaust port has at least one of a camera-side exhaust port provided in a portion facing the camera, a downstream-side exhaust port provided in a portion opposite the fan with respect to the portion where the camera-side exhaust port is provided, and an attachment-side exhaust port provided between the camera-side exhaust port and the attachment portion.

6. The vehicle image display device according to claim 1, characterized in that the heat dissipation member has a substrate portion and a plurality of rod members arranged vertically and horizontally on the substrate portion, and the plurality of rod members divide the air drawn in by the fan into the axial direction of the fan and a direction intersecting the axial direction.

7. The vehicle image display device according to claim 1, characterized in that the control unit has a substrate and a control element mounted on the substrate, the heat dissipation member is attached to the substrate via an intervening member so as to sandwich the control element between the substrate and the heat dissipation member, a through hole is provided in a portion of the intervening member corresponding to the control element, a heat conduction sheet is arranged in the through hole, and the heat conduction sheet is interposed between the control element and the heat dissipation member.

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