JPH08128864A - Display device - Google Patents

Abstract

PURPOSE: To provide a display device wherein lighting luminance with a display design part provided on a liquid crystal display part and a back bending board is made uniform, the whole device is easily miniaturized, the number of parts is small, and the assembling man-hour is small. CONSTITUTION: Near the center of a case 21, a valve 22 and a lamp case 23, as a light source L for back light, are housed and fixed. A diffusion board 24 is provided on the front face of the lamp case 23. A liquid crystal display part 26 is fixed to an aperture part 27 of an back bending board 25, and, on both sides of the aperture part 27, a communicating part 28 leading from the back of the back bending board 25 to the back, and, the communicating part 28 is close to the peripheral end part of the diffusion board 24 of the light source L. Into the communicating part 28, light of the light source L is guided, so that, a display design part 29 is illuminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device provided with a transmissive display unit such as a liquid crystal display unit which is illuminated by a light source called a backlight from the back of the display unit.
In particular, the present invention relates to a display device that indirectly illuminates a display design portion provided separately from the display portion using light from the light source.

[0002]

2. Description of the Related Art Conventionally, when a display device using a translucent display unit is used as an instrument for vehicles such as automobiles and motorcycles,
As shown in FIG. 4, a liquid crystal display 2 having a cold cathode tube (CCT) (not shown) as a light source for a backlight and a liquid crystal display (not shown) is housed and fixed in a case 1, and the liquid crystal display is shown in FIG. Facing plate 4 having window portion 3 formed corresponding to 2
Is arranged in the front opening 5 of the case 1. A light-transmitting display having good light-transmitting properties is provided on both sides of the window part 3, and display design parts 7a and 7b having a light-transmitting paint printed on the surface side of each light-transmitting member 6 are provided. A plate 8 is provided and a plurality of LEDs are provided corresponding to various display contents of the display design portions 7a and 7b.
A display substrate 10 provided with 9 is arranged below the display plate 8, and a liquid crystal display 2 and a control substrate 11 for the LED 9 are arranged at the bottom of the case 1. Then, the illumination light of the illumination lamp 12 standing upright on the control substrate 11 below the light guide 6 is introduced from the light guide 6 so that the transillumination is performed from the rear side of the display design portions 7a and 7b. Configure.

In the display device of the prior art, the display design portion 7a disposed near the liquid crystal display 2 is shaded by the light from the illumination lamp 12 being blocked by the peripheral portion of the liquid crystal display 2. There is a problem that the translucent brightness is lowered and the display design portion 7a near the liquid crystal display 2 looks darker than the display design portion 7b. Further, since the display design portions 7a and 7b appear darker than the liquid crystal display 2,
In order to solve this, there is a problem that the illumination brightness of the light source of the liquid crystal display 2 and the illumination lamp 12 that illuminates the display design portions 7a and 7b must be adjusted. As the space inside case 1 becomes smaller, the illumination lamp 12
The temperature rise inside Case 1 due to
It is very difficult to reduce the size of the entire device, because problems such as deformation of the device are likely to occur.

Therefore, as a solution to the above-mentioned problems, there is Japanese Utility Model Laid-Open No. 5-29001 filed by the applicant of the present application.

[0005]

However, in the above-mentioned prior art, since the display design portion has to be formed on a translucent member different from the dial plate in order to illuminate the display design portion with translucent illumination, It had a large number of points and required man-hours for assembling the parts. Therefore, the present invention solves the above-mentioned problems, the illumination brightness of the liquid crystal display unit and the display design unit is uniform, and it is possible to easily downsize the entire device, and the number of parts is small, It is an object of the present invention to provide a display device that is inexpensive and has high illumination quality that can reduce the number of assembling steps.

[0006]

The present invention corresponds to a translucent display section, a light source for translucently illuminating the translucent display section and housed and fixed in a case, and the translucent display section. A dial plate having a window portion, a display design portion formed around the window portion, and a communication portion formed in the dial plate for indirectly illuminating light from the light source to the display design portion, and a communication portion. It is a thing.

Further, a diffusing section is provided behind the translucent display section, and a diffusing section for diffusing light of the light source is integrally formed with the diffusing section in the communicating section.

Further, the translucent display section is made to face behind the window section and the communication section.

[0009]

With the above construction, good indirect illumination is performed on the display design portion through the communication portion formed on the dial plate. Also,
Since the light from the light source for illuminating the translucent display unit is used for indirect illumination, the number of parts is small and the number of assembling steps can be reduced.

Further, the provision of the diffusing portion makes it easy to adjust the illumination brightness.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings as a vehicle instrument.

FIGS. 1 to 3 show an embodiment of the present invention. A backlight bulb 22 and a lamp case 23 as a light source L are provided in a substantially center of a synthetic resin case 21. On the front surface of the lamp case 23, a light diffusing plate 24, which is a translucent resin plate and has a texture, is provided as a diffusing portion for diffusing light from the bulb 22. Reference numeral 25 is a dial plate, and a liquid crystal display unit 26 for displaying measured values such as vehicle speed and engine speed
It is fixed at 27. The liquid crystal display unit 26 is illuminated with light from the light source L via the diffusion plate 24. The window of this facing plate 25
On both sides of 27, a communication portion 28 that connects from the rear side to the front side of the dial plate 25 is provided. The light from the light source L is introduced. The diffusion plate 24 also serves as a diffusion portion between the liquid crystal display portion 26 and the communication portion 28.

Further, on the front surface of the dial plate 25, a plurality of characters such as characters and stylized symbols for displaying various vehicle states such as an operating state of a handbrake, an upward lighting state of headlights, running out of fuel, running out of oil, etc. The display design portion 29 is printed with white or red paint. Further, a plurality of display holes 30 are formed in the dial plate 25 corresponding to the display contents of the display design portion 29, and a display substrate 32 having a plurality of LEDs 31 attached below the display holes 30 is fixed by screws 33. Assembled and fixed to the dial plate 25, the liquid crystal display unit 26 and the LED 31
A control board 34 for driving the LCD is assembled and fixed to the bottom surface of the case 21 with screws 33, and the liquid crystal display unit 26 and each display board 32 are fixed.
And the control board 34 are electrically connected to each other so that the image display by the liquid crystal display unit 26 and the lighting operation by each LED 31 are controlled according to the traveling state of the vehicle.

When the light source L is powered on through the control board 34, the light from the light source L is diffused by the diffuser plate 24.
The light is emitted to the outside through the, and the liquid crystal display unit 26 is transilluminated. At this time, the light of the light source L is introduced from the communicating portion 28 through the diffusion plate 24 partitioned by the window portion 27 of the dial plate 25, so that each display design portion 29 is indirectly illuminated with uniform brightness.

As described above, in the above-described embodiment, the light emitted from the light source L illuminates each display design portion 29 through the communicating portion 28, so that the display design portion is different from the conventional example. Since it is not necessary to dispose the illumination lamp 12 on the bottom surface side of the case 1 below 29, downsizing of the entire device is facilitated, and the display design portion 29 disposed near the upper side of the liquid crystal display portion 26 is shaded. The display design portion 29 is illuminated with uniform illumination brightness. Further, since the same light source as the liquid crystal display unit 26 is used for illumination, each display design unit 29
The illumination efficiency is extremely high, and the liquid crystal display unit 26 and the display design unit 29 are illuminated with the same illumination brightness.

Moreover, since the display design portion 29 is formed directly on the dial plate 25, the number of parts can be reduced.

Further, various illumination adjustments can be performed by changing the diffuser plate 24 variously. For example, by forming a portion corresponding to the liquid crystal display portion 26 and a portion corresponding to the communication portion 28 in different colors, the liquid crystal display portion 26 and the design display portion
You can get different illumination colors with 29.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, the liquid crystal display section 26 is exposed to the back of the communication section 28. A configuration in which the liquid crystal display unit 26 is divided into a display unit and a non-display unit by using the dial plate 25, and the communication unit 28 is exposed to the non-display unit to indirectly illuminate the display design unit 29 formed on the front face of the dial plate 25. Also good.

According to the above construction, since the liquid crystal display section 26 is divided into the display section and the non-display section by the look-back plate 25, it is possible to drive the liquid crystal display section 26 separately for the display section and the non-display section. It is also possible to intentionally illuminate the liquid crystal display section 26 and the design display section 29 with different illumination brightness.

[0020]

According to the present invention, a translucent display section and a light source for translucently illuminating the translucent display section and being housed and fixed in a case are provided.
A facing plate having a window part corresponding to the translucent display part,
A display design portion formed around the window portion, and a communication portion formed on the dial plate for indirectly illuminating light from the light source to the display design portion, and,
By providing a diffusing member on the front surface of the light source, it is possible to make the illumination brightness to the display design portion uniform, and it is possible to easily downsize the entire device, and the number of parts is small, and the number of assembling steps is small, It is possible to provide a display device that is inexpensive and has high illumination quality.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a front view showing the same embodiment.

FIG. 3 is a perspective view showing the same embodiment.

FIG. 4 is a sectional view showing a conventional example.

[Explanation of symbols]

 2 Liquid crystal display 21 Case 22 Bulb 23 Lamp case 24 Diffusing plate (diffusing part) 25 Look-back plate 26 Liquid crystal display part 27 Window part 28 Communication part 29 Display design part L Light source

Claims (3)

[Claims] 1. A translucent display unit, a light source that translucently illuminates the translucent display unit and is housed and fixed in a case, and a dial plate having a window portion corresponding to the translucent display unit. A display device, comprising: a display design portion formed around the window portion; and a communication portion formed on the dial plate that guides light from the light source to the display design portion and indirectly illuminates the display design portion. . 2. A diffusion part is provided behind the translucent display part, and a diffusion part for diffusing the light of the light source is integrally formed with the diffusion part in the communication part. Display device. 3. The light transmissive display section is made to face behind the window section and the communication section.
Display device described.