Circuit board protection unit

Abstract

To provide a circuit board protective unit which can suppress connection failures of a connector.SOLUTION: A circuit board protective unit 50 is provided on an on-vehicle display device such as a head-up display device. The circuit board protective unit 50 includes a circuit board having a connector 61, a shield cover 70 which covers the circuit board and is made of metal, and a connector cover 80 which has a frame-shaped part 81 surrounding the connector 61 and is made of a resin. The shield cover 70 has an opening 71 exposing the connector 61. The connector cover 80 is fixed to the opening 71 of the shield cover 70. For example, the connector cover 80 has a hook part positioned closer to the circuit board than the frame-shaped part 81, and is fixed to the opening 71 by hooking the hook part to the opening.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a circuit board protection unit, and more particularly to a circuit board protection unit provided in an in-vehicle display device.

Background Art

[0002] For example, Patent Document 1 describes a head-up display (HUD) device as an in-vehicle display device. This HUD device includes a circuit board having a connector and a metal shield cover surrounding the periphery of the circuit board.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An external force may be applied in a direction in which the connector falls by inserting and removing a corresponding connector that fits with the connector of the circuit board. If an unnoticed stress occurs between the mounting portion of the connector on the circuit board and the connector due to this external force, there is a risk of connection failure of the connector.

[0005] In view of the above circumstances, the present disclosure is made, and an object thereof is to provide a circuit board protection unit capable of suppressing connection failure of a connector.

Means for Solving the Problems

[0006] To achieve the above object, the circuit board protection unit according to the present disclosure is a circuit board protection unit provided in an in-vehicle display device, a circuit board having a connector, A metal shield cover having an opening for exposing the connector and covering the circuit board, A resin connector cover having a frame-shaped portion surrounding the connector and fixed to the opening, The connector cover includes a hook portion located closer to the circuit board than the upper part of the frame, and the hook portion is fixed to the opening Hang by being engaged with the opening, The opening edge of the opening has a first side and a second side that are paired and extend along a first direction, and a third side and a fourth side that are paired and extend along a second direction orthogonal to the first direction, The connector has a first side surface along the first side, a second side surface along the second side, a third side surface along the third side, and a fourth side surface along the fourth side, The hook portion includes a first hook hung from the first side on the opening, a second hook hung from the second side on the opening, and a third hook hung from the third side on the opening, The connector cover further includes an elastic portion that presses the fourth side surface with an elastic force, and the third hook is pushed by the third side surface of the connector receiving the elastic force of the elastic portion and hung on the opening, The portion where the third hook contacts the third side surface and the portion where the elastic portion contacts the fourth side surface face each other in the second direction and are at the same position in the height direction of the connector. Also, the circuit board protection unit according to the present disclosure is A circuit board protection unit provided in an in-vehicle display device, A circuit board having a connector, A metal shield cover having an opening for exposing the connector and covering the circuit board, A resin connector cover having a frame-shaped portion surrounding the connector and fixed to the opening, The connector cover includes a hook portion located closer to the circuit board than the upper part of the frame, and the hook portion is fixed to the opening Hang by being engaged with the opening, The opening end of the opening has a first side and a second side that are paired and extend along a first direction, and a third side and a fourth side that are paired and extend along a second direction orthogonal to the first direction. The connector has a first side surface along the first side, a second side surface along the second side, a third side surface along the third side, and a fourth side surface along the fourth side. The hook portion includes a first hook hung from the first side on the opening, a second hook hung from the second side on the opening, and a third hook hung from the third side on the opening. The connector cover further includes an elastic portion that presses the fourth side surface with an elastic force. The third hook is pressed against the third side surface of the connector that has received the elastic force of the elastic portion and is hung on the opening. The connector cover further includes a first spring portion and a second spring portion that face each other across the connector in the second direction and press the shield cover toward the circuit board by an elastic force. The first hook and the second hook are pressed against the opening by having an elastic force in a direction away from each other. The claw of the first hook is hung on the opening by the elastic force of the first spring portion. The claw of the second hook is hung on the opening by the elastic force of the second spring portion.

Advantages of the Invention

[0007] According to the present disclosure, connection failures of the connector can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0009] An embodiment of the present disclosure will be described with reference to the drawings.

[0010] As shown in FIG. 2, the head-up display (HUD) device 1 according to the present embodiment is provided, for example, on the dashboard of the vehicle 2 and emits display light L toward the windshield 3. The display light L reflected by the windshield 3 allows the user 4 to visually recognize the virtual image V of the image represented by the display light L. The virtual image V shows various information regarding the vehicle 2 and is displayed in front of the vehicle 2 through the windshield 3.

[0011] As shown in FIG. 2, the HUD device 1 includes a display unit 10, a first mirror 20, a second mirror 30, a housing 40, and a circuit board protection unit 50 including a circuit board 60.

[0012] The display unit 10 emits display light L representing an image. The display unit 10 includes a liquid crystal display panel 11 and a backlight unit 12 that illuminates the liquid crystal display panel 11 from behind. The liquid crystal display panel 11 is, for example, of the TFT (Thin Film Transistor) type and is electrically connected to the circuit board 60. The liquid crystal display panel 11 displays an image while being illuminated by the backlight unit 12 under the control of a control unit mounted on the circuit board 60. The backlight unit 12 has a light source substrate 12b on which a plurality of LEDs (Light Emitting Diodes) 12a are mounted and an optical element 12c. The light source substrate 12b is electrically connected to the circuit board 60 and causes the plurality of LEDs 12a to emit light under the control of the control unit. The optical element 12c is configured to efficiently cause the light from the plurality of LEDs 12a to reach the liquid crystal display panel 11 and is composed of, for example, a condenser lens, a field lens, or the like.

[0013] The first mirror 20 is composed of a plane mirror or a curved mirror and reflects the display light L emitted by the display unit 10 toward the second mirror 30. The second mirror 30 is composed of, for example, a concave mirror and reflects the display light L from the first mirror 20 toward the windshield 3. Due to the function of the concave mirror, the virtual image V is visually recognized by the user 4 in a size in which the image displayed on the display unit 10 is enlarged. The second mirror 30 is rotationally driven around the axis 30a with respect to the housing 40 by a rotation drive unit (not shown). The control unit mounted on the circuit board 40 can adjust the display position of the virtual image V as seen by the user 4 by rotationally driving the second mirror 30.

[0014] The housing 40 is configured to accommodate the above-described respective components, and is formed in a box shape with light-shielding properties from synthetic resin, metal, or the like. Note that the housing 40 may be configured by a combination of a plurality of members. The housing 40 is provided with a through-hole 40a that opens toward the windshield 3 and through which the display light L reflected by the second mirror 30 passes. A translucent plate 40b that closes the through-hole 40a is attached to the housing 40. The display light L reflected by the second mirror 40 passes through the translucent plate 40b and heads toward the windshield 3. Further, the housing 40 is located below in FIG. 2 and includes a board fixing portion 41 to which the circuit board 60 is fixed.

[0015] The circuit board protection unit 50 includes a circuit board 60, a shield cover 70, and a connector cover 80.

[0016] The circuit board 60 is a PCB (Printed Circuit Board) on which electronic components such as a control unit that controls the operations of the display unit 10 and the aforementioned rotation drive unit are mounted. The control unit is composed of a CPU (Central Processing Unit), a memory, and the like.

[0017] The circuit board 60 has a connector 61 that protrudes downward in FIG. 2 from the base material of the circuit board 60. A cable having a corresponding connector that fits with the connector 61 is connected to the connector 61. For example, the connector 61 is a female type, and the corresponding connector is a male type. The connector 61 functions as, for example, a terminal for power input, a terminal for video signal input, or the like.

[0018] As shown in FIGS. 3 and 4, the connector 61 has a rectangular parallelepiped outer shape. FIG. 3 is a perspective view of the circuit board protection unit 50 as viewed from the arrow A shown in FIG. 2. FIG. 4 is an exploded perspective view of the circuit board protection unit 50. Hereinafter, when explaining the configuration of the circuit board protection unit 50, the X-axis along the width direction of the connector 61, the Y-axis along the depth length direction of the connector 61, and the Z-axis along the height direction of the connector 61 may be used. Note that the direction in which the arrows indicating the respective X, Y, and Z axes point is defined as the “+” (plus) direction of each axis, and the opposite direction is defined as the “−” (minus) direction.

[0019] The outer peripheral surface of the connector 61 includes a first side surface 61a and a second side surface 61b that are parallel to the YZ plane and face each other in the X direction, and a third side surface 61c and a fourth side surface 61d that are parallel to the ZX plane and face each other in the Y direction. In this embodiment, the length of the first side surface 61a and the second side surface 61b in the Y direction is longer than the length of the third side surface 61c and the fourth side surface 61d in the X direction. That is, the outer shape of the connector 61 is a rectangular parallelepiped shape that is long in the Y direction.

[0020] The shield cover 70 is a lid-shaped member made of metal and covers the circuit board 60 from below in FIG. 2. The outer edge of the shield cover 70 is fixed to the board fixing portion 41 or the circuit board 60 by fixing means such as screws. The shield cover 70 is electrically connected to a ground pattern (not shown) of the circuit board 60 and functions as an electromagnetic shield. Note that the circuit board protection unit 50 may further include a shield cover (not shown) that covers the circuit board 60 from above in FIG. 2. This shield cover only needs to be electrically connected to at least one of the shield cover 70 and the ground pattern of the circuit board 60.

[0021] As shown in FIG. 3, the shield cover 70 has an opening 71 that exposes the connector 61. As shown in FIG. 5, the opening 71 is provided in a recess 72 that is recessed from the main surface 70a of the shield cover 70 toward the circuit board 60. The main surface 70a is a surface that faces the direction in which the connector 61 protrudes (+Z direction). As shown in FIG. 3, in a state where the shield cover 70 is fixed, the connector 61 passes through the opening 71, and its tip end is positioned in the +Z direction relative to the main surface 70a of the shield cover 70.

[0022] As shown in FIG. 5, the opening end 71a of the opening 71 has a substantially rectangular shape and includes a first side S1 and a second side S2 that extend along the Y direction and form a pair, and a third side S3 and a fourth side S4 that extend along the X direction and form a pair. The connector 61 located in the opening 71 has a first side surface 61a along the first side S1, a second side surface 61b along the second side S2, a third side surface 61c along the third side S3, and a fourth side surface 61d along the fourth side S4.

[0023] The connector cover 80 is a resin member that protects the connector 61 and is fixed to the opening 71 of the shield cover 70. As shown in FIG. 6, the connector cover 80 includes a frame portion 81, a hook portion 90, an elastic portion 94, beam portions 82a to 82c, a first spring portion 83, a second spring portion 84, a first wall portion 85, and a second wall portion 86.

[0024] The frame portion 81 is a substantially rectangular frame that surrounds the connector 61 and includes a first portion 81a facing the first side surface 61a, a second portion 81b facing the second side surface 61b, a third portion 81c facing the third side surface 61c, and a fourth portion 81d facing the fourth side surface 61d.

[0025] The hook portion 90 is located closer to the circuit board 60 than the frame portion 81. The connector cover 80 is fixed to the opening 71 when the hook portion 90 is hung on the opening 71. The hook portion 90 includes a first hook 91, a second hook 92, and a third hook 93. The first hook 91 and the second hook 92 form a pair in the X direction.

[0026] The first hook 91 is hung from the first side S1 on the opening 71. The first hook 91 is connected to the first part 81a of the frame-like part 81 via the beam part 82a. As shown in FIG. 6, the beam part 82a has a generally rectangular plate shape, protrudes from the first part 81a in the -X direction, and its tip points in the -X direction. The first hook 91 has a leg part 91a connected to the beam part 82a, and a claw N1 provided at the tip of the leg part 91a and facing in the +X direction as shown in FIG. 7. FIG. 7 shows a state where the connector cover 80 is attached to the shield cover 70 and before the connector 61 is inserted into the connector cover 80. In FIG. 7, the first hook 91 and the second hook 92 are represented by a cross-section along the ZX plane. The leg part 91a extends generally in the -Z direction from the tip of the beam part 82a. The leg part 91a is slightly inclined because the tip is offset in the +X direction from the base end (the end closer to the beam part 82a). Due to the inclination of the leg part 91a in this way, the first hook 91 has an elastic force F1 in the +X direction.

[0027] The second hook 92 is hung from the second side S2 on the opening 71. The second hook 92 is connected to the second part 81b of the frame-like part 81 via the beam part 82b. As shown in FIG. 6, the beam part 82b has a generally rectangular plate shape, protrudes from the second part 81b in the +X direction, and its tip points in the +X direction. The second hook 92 has a leg part 92a connected to the beam part 82b, and a claw N2 provided at the tip of the leg part 92a and facing in the -X direction as shown in FIG. 7. The leg part 92a extends generally in the -Z direction from the tip of the beam part 82b. The leg part 92a is slightly inclined because the tip is offset in the -X direction from the base end (the end closer to the beam part 82b). Due to the inclination of the leg part 92a in this way, the second hook 92 has an elastic force F2 in the -X direction.

[0028] As described above, the first hook 91 and the second hook 92 have elastic forces F1 and F2 in directions away from each other, and are thus pressed against the opening 71.

[0029] The third hook 93 is hung from the third side S3 on the opening 71. The third hook 93 is connected to the third part 81c of the frame-shaped part 81 via the beam part 82c. As shown in FIG. 6, the beam part 82c has a generally rectangular plate shape, protrudes from the third part 81c in the +Y direction, and its tip points in the +Y direction. The third hook 93 has a leg part 93a connected to the beam part 82c and a claw N3 provided at the tip of the leg part 93a and facing in the -Y direction. FIG. 9 shows a state after the connector 61 is inserted into the connector cover 80 attached to the shield cover 70. Note that in FIG. 9, the third hook 93 and the elastic part 94 are shown in a cross section along the YZ plane. The leg part 93a extends from the tip of the beam part 82c in the -Z direction. The leg part 93a has an inclined surface 93b facing the third side surface 61c of the connector 61. The inclined surface 93b is inclined so as to move away from the third side surface 61c from the base end (the end close to the beam part 82c) of the leg part 93a toward the tip. A part of the inclined surface 93b of the third hook 93 is in contact with the third side surface 61c of the connector 61. The third hook 93 is pushed by the pressing force F3 on the third side surface 61c and hung on the opening 71.

[0030] As shown in FIG. 9, the elastic part 94 is a U-shaped cross-section part connected to the fourth part 81d of the frame-shaped part 81. The elastic part 94 has an elastic force F4 in the -Y direction, and pushes the fourth side surface 61d of the connector 61 with this elastic force F4. The aforementioned third hook 93 is pushed by the third side surface 61c of the connector 61 that has received the elastic force F4 of the elastic part 94 and is hung on the opening 71. In this way, by elastically sandwiching the connector 61 between the third hook 93 and the elastic part 94 in the Y direction, it is possible to reduce the rattling of the connector cover 80 in the Y direction with respect to the connector 61.

[0031] Also, the part where the third hook 93 contacts the third side surface 61c and the part where the elastic part 94 contacts the fourth side surface 61d face each other in the Y direction and are set to have the same position in the height direction (Z direction) of the connector 61. With this configuration, it is possible to suppress the application of unnecessary external forces other than the Y-direction component to the connector 61, and reduce the burden on the connector 61.

[0032] As shown in FIG. 6, the first spring portion 83 is a leaf spring-like portion that protrudes outward from the first portion 81a of the frame-shaped portion 81. The second spring portion 84 is a leaf spring-like portion that protrudes outward from the second portion 81b of the frame-shaped portion 81.

[0033] As shown in FIG. 10, the first spring portion 83 and the second spring portion 84 face each other with the connector 61 interposed therebetween in the X direction. FIG. 10 shows a state after the connector 61 is inserted into the connector cover 80 attached to the shield cover 70. In FIG. 10, the first spring portion 83 and the second spring portion 84 are represented by cross-sections along the ZX plane. The first spring portion 83 has an elastic force F5 in the -Z direction, and the shield cover 70's main surface 70a is pushed by this elastic force F5. The second spring portion 84 has an elastic force F6 in the -Z direction, and the shield cover 70's main surface 70a is pushed by this elastic force F6. That is, the first spring portion 83 and the second spring portion 84 push the shield cover 70 toward the circuit board 50 by the elastic forces F5 and F6. As a result, portions of the connector cover 80 other than the first spring portion 83 and the second spring portion 84 are biased in the +Z direction with respect to the shield cover 70. Due to this biasing force in the +Z direction, the claw N1 of the first hook 91 and the claw N2 of the second hook 92 are lifted in the +Z direction with respect to the shield cover 70 and are hooked on the opening 71 as shown in FIG. 7. Specifically, the claw N1 of the first hook 91 is hooked on the opening 71 by the elastic force F5 of the first spring portion 83. Also, the claw N2 of the second hook 92 is hooked on the opening 71 by the elastic force F6 of the second spring portion 84.

[0034] As shown in FIG. 6, the first wall portion 85 is provided to stand in the +Z direction from the first portion 81a of the frame portion 81. The second wall portion 86 is provided to stand in the +Z direction from the second portion 81b of the frame portion 81. The first wall portion 85 and the second wall portion 86 face each other in the X direction. Further, as shown in FIG. 11, the first wall portion 85 faces the first side surface 61a of the connector 61, and the second wall portion 86 faces the second side surface 61b of the connector 61. The state of FIG. 11 will be described later. The first wall portion 85 and the second wall portion 86 can suppress the connector 61 from moving excessively in a direction in which it is likely to fall when inserting and removing the aforementioned corresponding connector with respect to the connector 61. This is the description of the configuration of the HUD device 1 and the circuit board protection unit 50 provided in the HUD device 1.

[0035] Subsequently, an example of an assembly method when the connector cover 80 is provided around the connector 61 will be described with reference to FIGS. 7 to 11.

[0036] First, as shown in FIG. 7, the connector cover 80 is attached to the shield cover 70 by hanging the first hook 91 and the second hook 92 on the opening 71 of the shield cover 70. The elastic force F1 of the first hook 91 and the elastic force F2 of the second hook 92 determine the position of the connector cover 80 in the X direction with respect to the shield cover 70.

[0037] Also, when the first hook 91 and the second hook 92 are hung on the opening 71, as shown in FIG. 10, the first spring portion 83 and the second spring portion 84 bias the first hook 91 and the second hook 92 in the +Z direction by elastic forces F5 and F6. By this biasing force, the claw N1 of the first hook 91 and the claw N2 of the second hook 92 are pressed against the opening 71 in the +Z direction. By this action, the position of the connector cover 80 in the Z direction with respect to the shield cover 70 is determined.

[0038] Note that although the first hook 91 and the second hook 92 are hooked on the opening 71 of the shield cover 70, when the connector 61 is not inserted into the connector cover 80, as shown in FIG. 8, the third hook 93 is separated from the opening 71 and is not hooked on the opening 71.

[0039] Subsequently, the shield cover 70 with the connector cover 80 attached is moved as shown in FIG. 8 so that the connector 61 is inserted into the connector cover 80. In the process of this movement, the third hook 93 slides on the third side surface 61c, and the elastic portion 94 slides on the fourth side surface 61d. Along with this sliding, the third hook 93 bends in the -Y direction as the inclined surface 93b is pushed by the third side surface 61c of the connector 61. Then, when the shield cover 70 and the connector cover 80 reach the state shown in FIG. 9 with respect to the connector 61, the third hook 93 is pushed by the third side surface 61c of the connector 61 that receives the elastic force F4 of the elastic portion 94 and is hooked on the opening 71. By this action, the position of the connector cover 80 in the Z direction with respect to the shield cover 70 is determined.

[0040] Also, when the connector 61 is inserted into the connector cover 80, the first hook 91, the second hook 92, the third hook 93, and the elastic portion 94 each come into contact with the connector 61. Thereby, the positions of the connector cover 80 in the X and Y directions with respect to the connector 61 are determined. Note that the position of the connector cover 80 in the Z direction with respect to the connector 61 is determined by fixing the shield cover 70 to the substrate fixing portion 41 or the circuit board 60.

[0041] Here, when the connector 61 is inserted into the connector cover 80, as shown in FIG. 9, the connector 61 may not be properly sandwiched by the third hook 93 and the elastic portion 94, and the third hook 93 or the elastic portion 94 may separate from the connector 61. In this case, the operator performing the assembly presses the connector cover 80 in the -Z direction with respect to the shield cover 70 to release the engagement of the first hook 91 and the second hook 92 with the opening 71, as shown in FIG. 11. That is, the portion of the connector cover 80 other than the first spring portion 83 and the second spring portion 84 is moved in the -Z direction. Then, the operator moves the connector cover 80 in the Y direction while pressing it in the -Z direction with respect to the shield cover 70 to adjust the Y-direction position of the connector cover 80 with respect to the shield cover 70. By this adjustment, as shown in FIG. 9, a state where the connector 61 is properly sandwiched by the third hook 93 and the elastic portion 94 can be realized. If the operator stops pressing the connector cover 80 in the -Z direction with respect to the shield cover 70, the first hook 91 and the second hook 92 are re-engaged with the opening 71 by the restoring force of the first spring portion 83 and the second spring portion 84.

[0042] After inserting the connector 61 into the connector cover 80 as described above, the circuit board protection unit 50 is assembled by fixing the outer edge portion of the shield cover 70 to the board fixing portion 41 or the circuit board 60 with screws or the like.

[0043] Note that the present disclosure is not limited to the above embodiments and drawings. It is possible to make appropriate changes (including deletion of components) to the embodiments without changing the gist of the present disclosure.

[0044] (Modification example) In the above embodiment, the connector cover 80 fixed to the opening 71 of the shield cover 70 by the hook portion 90 has been described. However, the fixing means is not limited to the hook portion 90. The connector cover 80m according to a modified example fixed to the shield cover 70 by other fixing means will be described with reference to FIG. 12. The connector cover 80m includes bosses 87 and 88, and an adhesive portion 89, in addition to the frame-shaped portion 81, the first wall portion 85, and the second wall portion 86 similar to the above embodiment. Note that the connector cover 80m according to the modified example does not include the hook portion 90, the elastic portion 94, the beam portions 82a to 82c, the first spring portion 83, and the second spring portion 84.

[0045] The boss 87 is a cylindrical portion protruding outward from the first portion 81a of the frame-shaped portion 81. The boss 88 is a cylindrical portion protruding outward from the second portion 81b of the frame-shaped portion 81. The connector cover 80m is fixed to the shield cover 70 by screws (not shown) passed through each of the bosses 87 and 88.

[0046] The adhesive portion 89 is made of, for example, a double-sided tape or an adhesive, and is provided on the surface of the frame-shaped portion 81 facing the -Z direction. The connector cover 80m is also fixed to the shield cover 70 by this adhesive portion 89.

[0047] Note that either the method of fixing with screws using the bosses 87 and 88 or the method of fixing with the adhesive portion 89 can be omitted. That is, the connector cover 80m only needs to include at least one of the bosses 87 and 88 and the adhesive portion 89. Here, the opening 71, which is the position where the connector cover 80m according to the modified example is fixed, is the periphery of the opening formed in the shield cover 70, and includes the portions of the shield cover 70 that come into contact with the bosses 87 and 88 and the portion that comes into contact with the adhesive portion 89. This is the description of the connector cover 80m.

[0048] The in-vehicle display device provided with the circuit board protection unit 50 is not limited to the HUD device 1 and is arbitrary. The in-vehicle display device may be an instrument, a CID (Center Information Display), or the like. Further, the posture of the circuit board 60 with respect to the vehicle 2 and the position of the connector 61 with respect to the circuit board 60 can be arbitrarily changed.

[0049] Also, the type of vehicle 2 on which the HUD device 1 is mounted is not limited. The HUD device 1 can be mounted on various vehicles such as automobiles and motorcycles.

[0050] Hereinafter, the effects of the circuit board protection unit 50 will be described.

[0051] (Effect) (1) The circuit board protection unit 50 includes a circuit board 60 having a connector 61, a metal shield cover 70 that has an opening 71 for exposing the connector 61 and covers the circuit board 60, and a frame-shaped portion 81 that surrounds the connector 61, and resin connector covers 80, 80m that are fixed to the opening 71, and is provided in an in-vehicle display device.

[0052] Here, when all the components corresponding to the shield cover 70 and the connector covers 80, 80m are formed of resin, molding is easy, but it is difficult to provide an electromagnetic wave shielding function. On the other hand, when all the components corresponding to the shield cover 70 and the connector covers 80, 80m are made of metal, molding is difficult. According to the configuration of (1) above, the connector covers 80, 80m that surround the connector 61 can protect the connector 61 and suppress connection failure of the connector 61, and the shield cover 70 can be provided with an electromagnetic wave shielding function.

[0053] (2) In particular, the connector cover 80 according to the above embodiment includes a hook portion 90 that is located closer to the circuit board 60 than the frame-shaped portion 81, and is fixed to the opening 71 by hanging the hook portion 90 on the opening 71.

[0054] According to the configuration of (2) above, it is easy to attach the connector cover 80 to the shield cover 70.

[0055] (3) The open end 71a of the opening 71 has a first side S1 and a second side S2 that are paired and along the first direction (Y direction), and a third side S3 and a fourth side S4 that are paired and along the second direction (X direction). The connector 61 has a first side surface 61a along the first side S1, a second side surface 61b along the second side S2, a third side surface 61c along the third side S3, and a fourth side surface 61d along the fourth side S4. The hook portion 90 includes a first hook 91 hung from the first side S1 to the opening 71, a second hook 92 hung from the second side S2 to the opening 71, and a third hook 93 hung from the third side S3 to the opening 71. The connector cover 80 further includes an elastic portion 94 that presses the fourth side surface 61d with an elastic force F4. The third hook 93 is pushed by the third side surface 61c of the connector 61 that has received the elastic force F4 of the elastic portion 94 and is hung on the opening 71.

[0056] According to the configuration of (3) above, compared with the case where four hooks are provided, the force required to push when attaching the connector cover 80 to the opening 71 can be reduced, so that unnecessary stress can be suppressed from occurring in each of the connector cover 80 and the shield cover 70.

[0057] (4) The portion where the third hook 93 contacts the third side surface 61c and the portion where the elastic portion 94 contacts the fourth side surface 61d face each other in the second direction (Y direction) and have the same position in the height direction (Z direction) of the connector 61.

[0058] With the configuration of (4) above, it is possible to suppress the application of unnecessary external force to the connector 61 other than the second direction, and reduce the burden on the connector 61.

[0059] (5) The connector cover 80 further includes a first spring portion 83 and a second spring portion 84 that face each other across the connector 61 in the second direction (X direction). The first spring portion 83 and the second spring portion 84 push the shield cover 70 toward the circuit board 60 by elastic forces F5 and F6. The first hook 91 and the second hook 92 are pressed against the opening 71 by having elastic forces F1 and F2 in directions away from each other. The claw N1 of the first hook 91 is hooked on the opening 71 by the elastic force F5 of the first spring portion 83, and the claw N2 of the second hook 92 is hooked on the opening 72 by the elastic force F6 of the second spring portion 84.

[0060] According to the configuration of (5) above, not only the elasticity in the Y direction due to the configuration of (3) above, but also the elasticity in the X and Z directions is provided, and the relative positions of the connector cover 80 and the shield cover 70 are determined. That is, since the connector cover 80 and the shield cover 70 are positioned while being relatively elastic in each of the X, Y, and Z directions, play in each direction can be suppressed and the buffering property is excellent.

[0061] (6) The outer shape of the connector 61 is a rectangular parallelepiped shape that is long in the first direction (Y direction), and the connector cover 80 further includes a first wall portion 85 that faces the first side surface 61a and a second wall portion 86 that faces the second side surface 61b.

[0062] According to the configuration of (6) above, when inserting and removing the aforementioned corresponding connector with respect to the connector 61, it is possible to suppress the connector 61 from moving excessively in a direction in which it is likely to fall.

[0063] In the above description, for the sake of facilitating the understanding of the present disclosure, the description of well-known technical matters has been appropriately omitted.

Explanation of Reference Numerals

[0064] 1…HUD device 10…display unit, 20…first mirror, 30…second mirror, 40…housing, 41…substrate fixing portion 50…circuit board protection unit 60…circuit board 61…Connector, 61a~61d…First side~Fourth side 70…Shield cover 71…Opening, 71a…Open end, S1~S4…First side~Fourth side 80…Connector cover 81…Frame-like part, 83…First spring part, 84…Second spring part, 85…First wall part, 86…Second wall part 90…Hook part 91…First hook, N1…Claw 92…Second hook, N2…Claw 93…Third hook, N3…Claw 94…Elastic part F1,F2,F4~F6…Elastic force, F3…Pressing force

Claims

1. A circuit board protection unit provided in an in-vehicle display device, a circuit board having a connector, a metal shield cover having an opening for exposing the connector and covering the circuit board, a resin connector cover having a frame-shaped portion surrounding the connector and fixed to the opening, and the connector cover includes a hook portion located closer to the circuit board than the upper part of the frame, and the hook portion is fixed to the opening by being hung on the opening, the opening edge of the opening has a first side and a second side that are paired along a first direction, and a third side and a fourth side that are paired along a second direction orthogonal to the first direction, the connector has a first side surface along the first side, a second side surface along the second side, a third side surface along the third side, and a fourth side surface along the fourth side, the hook portion includes a first hook hung on the opening from the first side, a second hook hung on the opening from the second side, and a third hook hung on the opening from the third side, the connector cover further includes an elastic portion that presses the fourth side surface with an elastic force, the third hook is pushed by the third side surface of the connector that receives the elastic force of the elastic portion and is hung on the opening, a portion where the third hook contacts the third side surface and a portion where the elastic portion contacts the fourth side surface face each other in the second direction and have the same position in the height direction of the connector, a circuit board protection unit.

2. A circuit board protection unit provided in an in-vehicle display device, a circuit board having a connector, a metal shield cover having an opening for exposing the connector and covering the circuit board, a resin connector cover having a frame-shaped portion surrounding the connector and fixed to the opening, and the connector cover includes a hook portion located closer to the circuit board than the upper part of the frame, and the hook portion is fixed to the opening by being hung on the opening, the opening edge of the opening has a first side and a second side that are paired along a first direction, and a third side and a fourth side that are paired along a second direction orthogonal to the first direction, the connector has a first side surface along the first side, a second side surface along the second side, a third side surface along the third side, and a fourth side surface along the fourth side, The hook portion includes a first hook hung from the first side on the opening, a second hook hung from the second side on the opening, and a third hook hung from the third side on the opening. The connector cover further includes an elastic portion that presses the fourth side surface with an elastic force. The third hook is pushed against the third side surface of the connector that has received the elastic force of the elastic portion and is hung on the opening. The connector cover further includes a first spring portion and a second spring portion that face each other across the connector in the second direction and press the shield cover toward the circuit board by an elastic force. The first hook and the second hook are pressed against the opening by having an elastic force in a direction away from each other. The claw of the first hook is hung on the opening by the elastic force of the first spring portion. The claw of the second hook is hung on the opening by the elastic force of the second spring portion. Circuit board protection unit.

3. The outer shape of the connector is a rectangular parallelepiped shape that is long in the first direction. The connector cover further includes a first wall portion facing the first side surface and a second wall portion facing the second side surface. The circuit board protection unit according to claim 1 or claim 2.

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