JP6287585B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device including a liquid crystal display capable of reducing the number of parts.

  2. Description of the Related Art Conventionally, a vehicle display device that displays vehicle information or the like by illuminating a liquid crystal display element with light from a light source disposed behind the liquid crystal display element is known. Moreover, in order to make illumination of a liquid crystal display element uniform, what has the diffusion plate between the liquid crystal display element and the light source is common.

  In addition, such a display apparatus for a vehicle is known in which a non-uniform illumination of a liquid crystal display element is further suppressed by performing halftone printing on a diffusion plate to adjust the luminance.

JP-A-6-261700

  However, the operation of applying halftone dots to the diffusion plate and the management cost of the diffusion plate are required, and reduction of the number of parts by simplification has been expected.

  Therefore, the present invention has been made in view of such a point, and an object thereof is to provide a vehicle display device including a liquid crystal display capable of reducing a diffusion plate.

The present invention includes a display,
A case body for holding the indicator;
A housing for storing the case body;
A light source for illuminating the indicator;
In a vehicle display device comprising a display plate disposed behind the display,
In a vehicle display device comprising: a display plate on which a part of the back side of the display device is disposed,
The case body has a holding member that holds the indicator projecting to the indicator side,
The display board includes a brightness adjusting unit that adjusts the brightness of light from the light source in a region corresponding to the display, and has a through hole through which the holding member passes.

  In the present invention, the indicator is held by the holding member penetrating the display plate.

  In the present invention, the indicator is illuminated with light transmitted through the display plate.

  ADVANTAGE OF THE INVENTION According to this invention, the display apparatus for vehicles provided with the liquid crystal display which can reduce a diffuser plate can be provided.

1 is an exploded perspective view of a vehicle display device according to an embodiment of the present invention. The principal part expansion perspective view same as the above. The front view of a middle case same as the above.

  Embodiments of a display device for a vehicle according to the present invention will be described below with reference to the accompanying drawings.

  As shown in FIG. 1, the vehicle display device includes a panel display A, a front cover 1 formed of a light-transmitting resin, a turn-back member 2 having a visible window, a display plate 3, The middle case 4, the circuit board 5, the lower case 6, the pointer 7, and the light source 11 are configured, and the panel display A is disposed between the turning member 2 and the display plate 3. The panel display A includes a liquid crystal display panel 8 and a panel holder 9. The display panel 3 includes a luminance adjustment unit 31 that adjusts the luminance of light from the light source 11 in a region behind the liquid crystal display panel 8 and corresponding to the liquid crystal display panel 8. The middle case 4 includes a holding member 41 that holds (supports) the display panel 3 from behind, and is housed in a lower case 6 made of an impermeable resin.

  The pointer-type display portion B is a visible range partitioned by the turning member 2 and is formed so as to surround the outer periphery of the panel display A.

  The pointer 7 is a light emitting pointer that is molded from a translucent resin material and emits light by the light of the light source 11a for pointer illumination.

  Although not shown, the liquid crystal display panel 8 includes liquid crystal molecules sealed between a front glass substrate and a rear glass substrate, and a polarizing film attached to each glass substrate. Then, when a signal (voltage) according to an external measurement amount is applied to an electrode portion (not shown) provided on each glass substrate, a panel that displays the operating state of the vehicle (for example, the travel distance of the vehicle and the remaining fuel amount). The indicator appears in black. Although not shown, the liquid crystal display panel 8 is provided with connecting members such as lead pins and flexible printed wiring boards for electrical connection with the circuit board 5.

  The panel retainer 9 is made of, for example, a stainless copper plate that is a metal material, and includes an edge portion 91, an enclosure portion 92, and a panel engagement portion 93. The panel engaging portion 93 of the panel retainer 9 includes a through hole 33 corresponding to the panel engaging portion 93, a through hole (not shown) in the middle case, and a through hole corresponding to the panel engaging portion 93 of the circuit board 5. (Not shown), the liquid crystal display panel 8 is pressed against the display plate 3 and is engaged (clamped) with the circuit board 5.

The display board 3 is obtained by printing a design (not shown) such as a warning or a number on a light transmissive plate material. The display plate 3 is formed with a shaft hole for passing a pointer shaft of a movement (not shown) through the surface side of the display plate 3, and the pointer 7 is attached to the tip of the pointer shaft.
In addition, the display panel 3 is formed with a luminance adjusting unit 31 for adjusting the luminance of the light source 11b for the liquid crystal display panel 8 at a position where the panel display A is disposed. The brightness adjusting unit 31 is a place where the design or background of the display panel 3 is not printed, and printing such as halftone dots is performed on the front surface or the back surface. A through hole 32 through which a holding member 41 (described later) passes is formed in the vicinity of the brightness adjusting unit 31. In the present embodiment, the L-shaped portion has a slight gap corresponding to the shape of the holding member 41. Holes are formed.

The middle case 4 is formed from, for example, a white synthetic resin and is disposed on the circuit board 5. In the present embodiment, the middle case 4 includes a holding member 41 that holds the display plate 3 from the back surface, a wall portion 42, and a bottom portion 43. As shown in FIG. 3, the bottom portion 43 is formed with an opening 44 for the light of the light source 11b to be irradiated in the direction of the display plate 3, but the design of the display plate 3 and the panel display A are the same. In the case of illuminating with the light source, it may be configured such that the light of the light source 11b is irradiated in the far direction without forming the wall portion 42 and the bottom portion 43 that partition the space.
In this case, the middle case 4 is preferably formed with a reflecting portion for reflecting light from the light source 11b mounted on the circuit board 5 around the pointer axis in the direction of the display board 3.

  The holding member 41 is a columnar member that is integrally formed with the middle case 4 and protrudes in the direction of the display panel 3. In the present embodiment, four holding members 41 having an L-shaped cross section are formed on diagonal lines corresponding to the squares of the liquid crystal display panel 8.

  As the circuit board 5, a hard circuit board made of glass epoxy resin can be applied. As shown in FIG. 1, in addition to the light source 11a for illuminating the pointer 7 and the light source 11b for illuminating the panel display A, the control circuit has the same surface. A circuit pattern (not shown) that is mounted on top and supplies power to these electronic members is formed. In addition, a through hole (not shown) through which the panel engaging portion 93 passes is formed. After the panel engaging portion 93 has penetrated the circuit board 5, the end of the panel engaging portion 93 is the back surface of the circuit board 5. It is bent at a right angle on the side.

  In a state where the panel engaging portion 93 is crimped and fixed to the circuit board 5, the holding member 41 passes through the L-shaped through hole 32 of the display plate 3 and the back surface of the display plate 3 abuts against the wall portion 42. The upper surface portion 45 of the holding member 41 contacts the inner side of the edge portion 91 of the panel holding member 9. As a result, the panel display A is assembled to the display board 3, the middle case 4, and the circuit board 5.

  Thus, according to the present invention, the panel display A, the middle case 4 holding the panel display A, the lower case 6 in which the middle case 4 is stored, and the light source 11b that illuminates the panel display A In the vehicular display device including the display panel 3 on which a part of the back side of the panel display A is disposed, the middle case 4 holds the panel display A protruding to the panel display A side. The display panel 3 includes a member 41, and the display panel 3 includes a brightness adjustment unit 31 that adjusts the brightness of light from the light source 11b in a region corresponding to the panel display A side, and includes a through hole 32 through which the holding member 41 passes. Therefore, it is possible to provide a vehicle display device that does not require a separate diffusion plate.

  Further, according to the present invention, the panel display A is held by the holding member 41 penetrating the display plate 3, so that the panel retainer 9 can be fixed in a state where the display plate 3 is sandwiched.

1 Front cover 2 Look-back member 3 Display board 4 Middle case (case body)
5 Circuit board 6 Lower case (housing)
7 Pointer 8 Liquid crystal display panel 9 Panel restraint 10 Liquid crystal display element 11a, 11b Light source 31 Luminance adjustment part 41 Holding member 91 Edge part 92 Enclosure part 93 Engagement part 94 Wall part 95 Bottom part 96 Space part A Panel display (display)
B Pointer type indicator

Claims (3)

An indicator,
A case body for holding the indicator;
A housing for storing the case body;
A light source for illuminating the indicator;
In a vehicle display device comprising: a display plate on which a part of the back side of the display device is disposed,
The case body has a holding member that holds the indicator projecting to the indicator side,
The display panel includes a brightness adjusting unit that adjusts the brightness of light from the light source in a region corresponding to the display, and has a through-hole through which the holding member passes. apparatus.   The vehicle display device according to claim 1, wherein the display is held by the holding member penetrating the display plate. The vehicle display device according to claim 1, wherein the display is illuminated by light transmitted through the display plate.

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