JP2002257603A - Displaying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effective means which relates to a displaying device guiding light from an illuminant such as an LED or the like to a displaying panel disposed on the front surface of an electrical equipment case and displaying an operating condition of the equipment, and in particular, guides the light form the light source to the displaying panel without attenuation. SOLUTION: The displaying panel 1 made of a light guiding material, on the back surface of which a pillar-like projection 2 is integrally formed, is fixed on the front surface of the equipment case 1 so that the edge of the projection 2 is exposed to the back surface of the equipment case 1 through a penetration formed in the equipment case 1. The illuminant 4 is fixed on the side of back surface of the equipment case 1 so as to be in close proximity to the edge of the projection 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an LED as a light source.
The present invention relates to a display device that displays an operation state of an electric device using a light emitting body such as a (Light Emitting Diode), and particularly has a feature in a unit for guiding light from a light source to a display panel.

[0002]

2. Description of the Related Art FIG. 2 is a sectional view of a display device using a conventional luminous body to guide the light to a predetermined position on the display panel.
Is fixed to the device housing 1 while leaving a predetermined space between the device housing 3 and the front surface of the device housing 3. In order to guide the light from the light emitter 4 to the display panel 1, the device housing 3 is attached to the device housing 3 by using screws 6 so that a predetermined space is formed between the light emitter 4 and the back surface of the housing 3. An LED guide member 7 having a light guiding property is fixed to the housing 3 so as to penetrate the formed through hole.

[0003] The light guided by the LED guide member 7 causes a part of the translucent or transparent display panel 1 to emit light to display the operating state of the electric equipment.

[0004]

However, in this configuration, an LED is used to guide the light of the luminous body 4 to the display panel 1.
The guide member 7 is required, and a member and man-hours for fixing the guide member 7 are required. Furthermore, the display panel 1
There is a possibility that the positional relationship between the display panel 1 and the LED guide member is deviated, so that there is a problem in that light is not guided to a predetermined position on the translucent or transparent display panel 1. Further, since there is a layer having a different medium between the display panel 1 and the LED guide member 7, there is also a problem that the light amount is attenuated.

SUMMARY OF THE INVENTION In view of the above problems, the present invention reduces the number of parts and man-hours for guiding light of a luminous body in a predetermined direction, and easily emits light to a predetermined position with almost no attenuation of light. A specific configuration for guiding the light is provided.

[0006]

According to the present invention, there is provided a light guide device, comprising: a display panel made of a light guide material having a projection integrally formed on a back surface; Through the formed through-hole, it is fixed to the front surface of the device housing so as to be exposed on the back surface of the device housing, and the luminous body is fixed to the back surface side of the device housing so as to be close to the tip of the projection. Since the light guide unit for guiding the light of the luminous body to the display panel is formed integrally with the display panel, without using a separate light guide member,
The light from the illuminant can be guided in a predetermined direction with little attenuation of the light amount.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A display device according to a first aspect of the present invention includes a display panel made of a light guide material having a projection integrally formed on a back surface, and a tip of the projection formed on an equipment housing. Through the through hole, fixed to the front surface of the device housing so as to be exposed on the back surface of the device housing, and the luminous body is fixed to the back surface side of the device housing so as to approach the tip of the protrusion. Since the light guide portion for guiding the light of the luminous body to the display panel is formed integrally with the display panel, the light amount can be reduced without using a separate light guide member. The light from the luminous body can be guided in a predetermined direction with almost no light.

Next, in the display device according to a second aspect of the present invention, the protrusion is formed in a columnar shape for guiding the light of the luminous body to the surface of the display panel in a limited manner. Item 4. The display device according to Item 1, wherein light from the luminous body can be guided to the display panel in a limited manner without reducing water.

Next, in a display device according to a third aspect of the present invention, the column-shaped projection is press-fitted into a through hole provided in the equipment housing, and the projection allows the display panel to be attached to the equipment housing. The display device according to claim 2, wherein the display panel is fixed to a front surface of the device housing by a projection that guides light from a luminous body, wherein the display panel is fixed to a front surface of the body. This does not require any means for fixing the display panel.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment) An embodiment of the present invention will be described below with reference to FIG. The same components as those in the above-described conventional example are denoted by the same reference numerals.

In FIG. 1, similarly to the conventional example, a printed wiring board 5 on which a light-emitting body 4 such as an LED is attached,
A screw 6 is attached to the back surface of the device housing 3 so that a predetermined space is formed between the light emitting body 4 and the back surface of the housing 3.

A feature of the present embodiment is that a columnar projection 2 is integrally formed on the back surface of a transparent or opaque display panel 1, and this projection 2 is made to pass through a through hole formed in a device housing 3. With its tip close to the light-emitting body 4,
The point is that the display panel 1 is fixed to the front surface of the housing. That is, the columnar projection 2 is used as a light guide material.

Since the display panel 1 and the light guide material are formed integrally, the light emitted from the light emitting body 4 emits light from the projection 2
And can reach the surface of the display panel 1 at a predetermined position with little attenuation.

If the projection 2 is press-fitted into a through hole formed in the equipment housing 3, the display panel 1 can be fixedly held on the front surface of the equipment housing 3 by the projection 2. No other holding and fixing means is required.

[0015]

As described above, according to the present invention, since the light guide for guiding the light of the illuminant to the display panel is formed integrally with the display panel, a separate light guide member is used. And can guide the light of the luminous body in a predetermined direction with little attenuation of the light amount. Therefore, it is possible to display the operation state and the like of the electric equipment with a simple structure and at a low cost, greatly improving productivity. It will contribute.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a display device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display panel 2 Columnar protrusion 3 Device housing 4 Light emitting body 5 Printed wiring board 6 Screw

Claims (3)

[The claims] 1. A display panel made of a light guide material having a projection integrally formed on a back surface thereof, such that a tip of the projection is exposed on a back surface of the equipment housing through a through hole formed in the equipment housing. A display device, wherein the luminous body is fixed to a front surface of the device housing, and a luminous body is fixed to a rear surface side of the device housing so as to approach a tip of the projection. 2. The display device according to claim 1, wherein the protrusion is formed in a columnar shape for guiding light of the luminous body to a surface of the display panel in a limited manner. 3. The device according to claim 1, wherein the columnar projection is press-fitted into a through-hole provided in the device housing, and the display panel is fixed to a front surface of the device housing by the press-fitted protrusion. The display device according to claim 2, wherein