JP6573103B2 - Display device - Google Patents

Description

  The present invention relates to a display device including a case in which a display unit is accommodated.

  Conventionally, various display devices in which a display unit is housed in a case have been proposed, and for example, disclosed in Patent Document 1. The display device includes a display unit and a case in which the display unit is stored. The display unit includes a display element called a TFT type, a backlight device that illuminates the display element, a display element, A synthetic resin holder that holds the backlight device, a metal presser frame that fixes the display element and the backlight device to the holder, and an electronic device that is placed behind the holder to drive the display element and turn on the light source A circuit board on which components are mounted and a shield case made of steel are provided.

  Such a display unit is generally known in which a mounting portion provided in the display unit, a case, and a circuit board are fixed by screwing.

JP-A-11-268557

However, when the display unit is fixed to the resin case with the circuit board interposed therebetween, there is a problem that the display screen is deformed due to the mounting distortion transmitted to the display unit.

The present invention has been made in view of these points, and an object of the present invention is to provide a display device with good merchantability in which deformation of the display screen is suppressed.

In order to achieve the above object, the present invention provides a display unit for displaying an image, a circuit board disposed on the back side of the display unit, and an intermediate case made of a material softer than the circuit board for housing the display unit. And a lower case for housing the circuit board, wherein the display unit is provided with a first mounting portion for mounting the middle case, and for penetrating the middle case and for mounting the circuit board and the lower case. a second attachment portion, were closed, and the first attachment portion is disposed on one side without placing the circuit board of the display unit on the rear side, the second mounting portion, the circuit of the display unit It arrange | positions at the other side opposite to the said one side which arrange | positions a board | substrate on the back side .

The display unit is further disposed on the one side and further includes a third attachment portion for attaching the middle case and the lower case.

The display unit is disposed on the other side, and further includes a fourth mounting portion for penetrating the middle case and mounting only the circuit board.

  Further, the first mounting portion and the second mounting portion of the display unit are integrally formed in a metal shield case.

ADVANTAGE OF THE INVENTION According to this invention, the display apparatus with favorable merchantability which suppressed that a display screen deform | transforms can be provided.

The front view of the display apparatus which shows 1st Embodiment of this invention. FIG. 2 is an AA cross-sectional view of FIG. The rear view of the middle case of the display apparatus which shows 2nd Embodiment of this invention. The rear view of the circuit board of the display apparatus. The rear view of the lower case of the display apparatus. The rear view of the middle case and circuit board of the display device. BB sectional drawing of FIG. CC sectional drawing of FIG.

  An example in which the present invention is applied to a vehicle display device will be described as a first embodiment with reference to FIGS. 1 and 2.

  The display unit 1 includes a TFT type display element 13 in the present embodiment, and although not shown, a holder, a lighting member, a shield case 5 and the like in which the display element 13 is accommodated are unitized.

  The case 2 is composed of, for example, a middle case 2A molded from a white synthetic resin or the like, and a lower case 2B molded from a black synthetic resin or the like, and is engaged and fixed by an engagement portion such as a hook. ing.

  In this embodiment, the shield case 5 is made of a metal material and is disposed so as to cover the outer peripheral side of the display element 13. Although not shown, a flexible wiring member (FPC) extends from the display element 13 and is connected to the circuit board 8 located behind. The shield case 5 is integrally formed with a plurality of attachment portions 51 to which screws 10 to be described later are tightened.

  The attachment portion 51 includes a first attachment portion 51A to which only the middle case 2A is attached, and a second attachment portion 51B to which the circuit board 8 and the lower case 2B are attached.

Middle casing 2A, as shown in FIG. 2, housing portion 21 is formed of the display unit 1 is accommodated. A through hole 2 </ b> A <b> 1 through which the second attachment portion 51 </ b> B passes is formed on the bottom surface of the storage portion 21 . Further, as shown in FIG. 2, the middle case 2A is formed with an insertion hole 2A2 for inserting the screw 10 into the first mounting portion 51A.

  The lower case 2B is formed with an insertion hole 2B3 for inserting the screw 10 into the second mounting portion 51B.

  As shown in FIG. 2, the circuit board 8 has a smaller area than the middle case 2A and the lower case 2B, and the screw 10 inserted from the insertion hole 2B3 is inserted into the second mounting portion 51B. A hole 81 is formed.

  A pointer-type meter 30 is disposed on the right side of the display unit 1 in FIG. The pointer-type meter 30 includes a pointer 31, a dial plate 32 having an indicator portion indicated by the pointer 31, and a light source 33 that illuminates the dial plate 32 from behind. The pointer 31 is attached to the tip of a pointer shaft extending from a drive source 35 disposed on the back side of the circuit board 8. The dial 32 is held by the middle case 2A. The light source 33 is disposed on the circuit board 8.

The assembly of the display unit 1 to the middle case 2A and the lower case 2B will be described. The display unit 1 is accommodated in the accommodating part 21 so that the second attaching part 51B of the attaching part 51 formed in the shield case 5 of the display unit 1 penetrates the through hole 2A1 of the middle case 2A. The first mounting portion 51A and the middle case 2A are fastened with screws 10 inserted from the insertion holes 2A2 of the middle case 2A.

  The circuit board 8 is arranged on the back side of the middle case 2A so that the second mounting portion 51B penetrates the through hole 2A1 and comes into contact with the circuit board 8. The second mounting portion 51B is connected to the circuit board 8 after the screw 10 inserted from the insertion hole 2B3 formed in the lower case 2B passes through the through hole 81 of the circuit board 8 and the through hole 2A1 of the middle case 2A. The lower case 2B is screwed.

  In this way, the display unit 1 for displaying an image, the circuit board 8 disposed on the back side of the display unit 1, the middle case 2A for housing the display unit 1, the lower case 2B for housing the circuit board 8, The display unit 1 includes a mounting portion 51 on the back side thereof, and the mounting portion 51 includes a first mounting portion 51A for mounting the middle case 2A, and a first mounting portion for mounting the circuit board 8 and the lower case 2B. The first mounting portion 51A to which only the middle case 2A is screwed without using the circuit board 8 and the circuit board 8 and the lower case 2B are attached. 2 and a mounting portion 51 that is screwed to the middle case 2A, which is a softer material than the circuit board 8, and the mounting distortion transmitted to the display unit 1 is alleviated. It is possible to reduce the distortion.

  In this embodiment, the example in which the attachment portion 51 is integrally formed with the shield case 5 of the display unit 1 has been described. However, for example, the attachment portion 51 is formed in the resin case of the display unit 1 and penetrates the shield case. It may be a structure exposed from a hole or notch, and the material of the attachment portion is not limited to metal as long as each part is assembled.

  The second embodiment will be described based on FIGS. 3 to 8. In addition, description of the structure which overlaps with 1st Embodiment is abbreviate | omitted.

  The attachment portion 51 includes a first attachment portion 51A to which only the middle case 2A is attached, a second attachment portion 51B to which the circuit board 8 and the lower case 2B are attached, and a third attachment portion to which the middle case 2A and the lower case 2B are attached. 51C and 4th attaching part 51D which penetrates the middle case 2A and to which the circuit board 8 is attached.

  As in the first embodiment, the first attachment portion 51A is screwed by the screw 10 inserted from the insertion hole 2A2 formed in the middle case 2A.

In the second mounting portion 51B, as in the first embodiment, the screw 10 inserted from the insertion hole 2B3 formed in the lower case 2B passes through the through hole 81 of the circuit board 8 and the through hole 2A1 of the middle case 2A. Thereafter, the circuit board 8 and the lower case 2B are screwed together.

  In the middle case 2A, a through hole 2A1 and an insertion hole 2A2 are formed as in the first embodiment. Further, as shown in FIGS. 3, 6, 7, and 8, the middle case 2A is inserted with a through hole 2A3 through which the screw 10 inserted into the third mounting portion 51C passes and a screw 10. A through hole 2A4 through which the fourth attachment portion 51D passes is formed.

  The lower case 2B is formed with insertion holes 2B3 and 2B4 through which the screw 10 is inserted into the second attachment portion 51B and the third attachment portion 51C.

  As shown in FIGS. 4 and 6, the circuit board 8 has an area smaller than that of the middle case 2 </ b> A, and a through hole 81 for inserting the screw 10 into the second attachment portion 51 </ b> B and the fourth attachment portion 51 </ b> D, 82 is formed along the center line M in the short direction of the circuit board 8.

  The assembly of the display unit 1 to the middle case 2A and the lower case 2B will be described. The display unit 1 is accommodated so that the second mounting portion 51B and the fourth mounting portion 51D among the mounting portions 51 formed on the shield case 5 of the display unit 1 pass through the through holes 2A1 and 2A4 of the middle case 2A. Housed in part 21. The first mounting portion 51A is screwed with the screw 10 inserted from the insertion hole 2A2 of the middle case 2A.

  The circuit board 8 is disposed on the back side of the middle case 2A so that the fourth mounting portion 51D passes through the through hole 2A4 of the middle case 2A and contacts the circuit board 8. The fourth mounting portion 51D is screwed after the screw 10 inserted from the insertion hole 82 of the circuit board 8 passes through the through hole 2A4 of the middle case 2A.

  The second mounting portion 51B is screwed by the screw 10 inserted from the insertion hole 2B3 of the lower case 2B. The second mounting portion 51B comes into contact with the circuit board 8, and the screws 10 are inserted from the insertion holes 2B3 formed in the lower case 2B so as to correspond to the second mounting portion 51B, and the second mounting portion 51B and the lower case 2B are connected. Tighten the screws.

  The third mounting portion 51C is screwed after the screw 10 inserted from the insertion hole 2B4 formed in the lower case 2B passes through the through hole 2A3 of the middle case 2A.

  Thus, the display unit 1 for displaying an image, the circuit board 8 disposed on the back side of the display unit 1, the middle case 2A for housing the display unit 1, the lower case 2B for housing the circuit board 8, The display unit 1 includes a mounting portion 51 on the back side thereof, and the mounting portion 51 includes a first mounting portion 51A for mounting the middle case 2A, and a first mounting portion for mounting the circuit board 8 and the lower case 2B. The display unit 1 is screwed only to the middle case 2A without the circuit board 8 by including the second mounting portion 51B and the third mounting portion 51C for mounting the middle case 2A and the lower case 2B. The circuit board 8 includes a first attachment part 51A, a second attachment part 51B to which the circuit board 8 and the lower case 2B are attached, and a third attachment part 51C to which the middle case 2A and the lower case 2B are attached. Because it has an attachment portion 51 which is screw-fastened to the case 2A in a softer material than can be attached strain transmitted to the display unit 1 is reduced, to reduce the distortion of the display screen.

Further, the display unit 1 for displaying an image, a circuit board 8 disposed on the back side of the display unit 1, a middle case 2A for housing the display unit 1, and a lower case 2B for housing the circuit board 8 are provided. The display unit 1 includes a mounting portion 51 on the back side, and the mounting portion 51 has a first mounting portion 51A for mounting the middle case 2A, and a second mounting for mounting the circuit board 8 and the lower case 2B. A third mounting portion 5 for mounting the portion 51B and the middle case 2A and the lower case 2B
1C and the fourth mounting portion 51D for mounting the circuit board 8 and the middle case 2A, the display unit 1 can be screwed only in the middle case 2A without the circuit board 8 therebetween. 51A, a second mounting portion 51B to which the circuit board 8 and the lower case 2B are mounted, a third mounting portion 51C to which the middle case 2A and the lower case 2B are mounted, and a circuit board 8 and the middle case 2A are mounted. 4 mounting portion 51D and the mounting portion 51 screwed to the middle case 2A, which is a soft material compared to the circuit board 8, and the mounting distortion transmitted to the display unit 1 is alleviated. Distortion can be reduced.

DESCRIPTION OF SYMBOLS 1 Display unit 2A Upper case 21 Storage part 2A1 Through-hole 2A2 Insertion hole 2A3 Through-hole 2A4 Through-hole 2B Lower case 2B3 Insertion hole 2B4 Insertion hole 5 Shield case 8 Circuit board 10 Screw 51 Attachment part 51A 1st attachment part 51B 2nd attachment Part 51C Third attachment part 51D Fourth attachment part 13 Display element 81 Through hole 82 Insertion hole

Claims (4)

A display unit for displaying an image, a circuit board disposed on the back side of the display unit , a middle case made of a softer material than the circuit board for housing the display unit, and a lower case for housing the circuit board And comprising
Wherein the display unit, possess a first mounting portion for mounting said in case, and a second mounting portion for mounting the circuit board and the lower case together with passing the said in case,
The first mounting portion is disposed on one side of the display unit not disposed on the back side of the circuit board,
The display device according to claim 1, wherein the second attachment portion is disposed on the other side opposite to the one side where the circuit board of the display unit is disposed on the back side . 2. The display device according to claim 1, wherein the display unit further includes a third attachment portion that is disposed on the one side and for attaching the middle case and the lower case. 3. The display device according to claim 2, wherein the display unit further includes a fourth attachment portion that is disposed on the other side , passes through the middle case, and attaches only the circuit board. 4. The display device according to claim 1, wherein the first attachment portion and the second attachment portion of the display unit are integrally formed in a metal shield case.

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