JPH03263084A - Illuminating display device - Google Patents

Abstract

PURPOSE:To enable a user to visually recognize a display part at night and in the day time by arranging a light-transmissive member having a directivity on the rear face side of a light-transmissive member for display to control penetration of light to the inside. CONSTITUTION:A half mirror layer 9 as the light penetration control means which controls penetration of light from the outside is provided on the surface of a light-transmissive member 6, and a light-transmissive member 12 having a directivity which polarizes the incident light and emits the light in a prescribed direction is arranged on the rear face side of the light-transmissive member 6. Since the light from a light source 7 advances in parallel with the prescribed direction by the light-transmissive member 6 having a directivity, light is not dispersed and it is unnecessary to increase the quantity of light of the light source 7 more than necessary. Since the half mirror layer 9 to control penetration of light to the inside is provided, the inside cannot be seen in the day and external light is reflected by the light penetration control means and the display part can be seen. Thus, the display is distinctly visually recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in an illumination display device used for a switch knob of an automobile, etc.

(Prior art) Conventionally, lighting for switch knobs, etc. has been done by transmitting light from a light source such as a lamp installed behind the switch knob through a display section formed by cutting out letters from a coating film on a semi-transparent member. By this, the display section is illuminated.

(Problem to be solved by the invention) However, the switch of a car is installed near the center of the panel, and the light that passes through the display part of the switch knob is dispersed, and the dispersed light is reflected on the windshield and door windows, causing problems when driving. There was a problem in that it was visible to drivers and passengers, and was dangerous for driving.

The present invention has been made in view of this problem, and an object of the present invention is to provide an illumination display device whose display portion can be clearly viewed day and night.

(Means for Solving the Problems) In order to solve the above problems, the present invention allows light from an internal light source to pass through and illuminates a display part formed by cutting out a coating film on the surface of a transparent part for display. In the lighting display device, a directional light-transmitting member is disposed on the surface side of the display-use light-transmitting member, and a light intrusion restriction means is provided to restrict light from entering the interior. .

Then, as a means for controlling light intrusion, a half-mirror layer is used as the first layer.
In the embodiment, it is formed on the surface of a transparent display component, in the second embodiment it is formed on the surface of a display transparent component, and in the third embodiment it is formed on the surface of a directional transparent component.

(Function) During the day, external light is reflected by the light intrusion control means and does not reach the directional transparent parts. Therefore, the cut-out portions of the paint film reflect specularly on the display, giving it a silver-white appearance. Further, at night, the light emitted from the light source passes through the directional light-transmitting member and the light intrusion control means and is irradiated to the outside. At this time, the directional light-transmitting part has a function of restricting the light emitted from the light source in multiple directions to a predetermined direction, and the light from the light source is not restricted much by the light intrusion restricting means. Therefore, at night, the light power of the light source is emitted only in a predetermined direction.

The color corresponds to the color of the light source and the color of the directional light-transmitting member and the light intrusion control means.

(Example) Next, an example of the present invention will be described in more detail with reference to the drawings.

1 to 5 are diagrams showing a first embodiment of the present invention, in which 1 is an air conditioner switch 2 that drives an air control device and an economy switch 3 that limits the operating time of the compressor. economy switch,
4 is a case, 5 is an operating knob that operates the air conditioner switch 2, 6 is a transparent component (transparent component for display) that is the base of the operating knob 5, and 7 is attached to a printed board 8 housed in the case 4. This is a lamp that has been installed. As shown in FIG. 4, a half-mirror layer 9 is deposited on the surface of the transparent component 6 as a light intrusion regulating means for regulating the intrusion of light from the outside, and then a film is applied by vacuum evaporation or the like. A display section 11 is provided in which the letters A/C, meaning air conditioner, are formed by copying the coating film 10 with a laser.

On the back side of the transparent component 6, there is a directional transparent component that polarizes the incident light and emits the light only in a predetermined direction, such as a light control film (hereinafter abbreviated as LCF). ) is provided.

In FIG. 5, 13 is an operation knob that operates the economy switch 3, 14 is a transparent component that is the base of the operation knob 13,
There are 15 lamps. A half-mirror layer 16 is also deposited on the surface of the transparent component 14, and then coated by vacuum deposition, etc., and this coating 17 is cut with a laser to form the letters ECO, which means economy. A portion 18 is provided, and an LCF19 is provided on the back side of the light-transmitting member 14.

A non-light-transparent seven-piece case 20.21 is provided at the rear end of each operating knob 5.13, and the engaging portion 22.23 of the knob case 220.21 connects to the air conditioner switch body 24.21. The air conditioner switch body 24. engages with the driving portion 26.27 of the economy switch body 25. The switch body 25 for economy is operated.

The light from the lamp 7 in this embodiment is polarized by the LCFl2, refracted slightly downward by the transparent member 6, and then projected toward the upper right as shown in FIG. Further, the light from the lamp 15 is polarized by the LCF 19 and travels toward the upper right as shown in FIG.

Note that the light polarized by LCFl 2 is transmitted through the transparent part 6.
However, in this example, the LC
The polarization angle of Fl2 is made slightly similar to the polarization angle of LCFl9, so that the light from lamp 7 and the light from lamp 15 travel in the same direction, which is the position of the driver's eyes.

That is, since the light from the lamps 7 and 15 travels only in the direction of the driver, the display sections 11 and 18 can be clearly viewed from the direction where the driver's eyes are located.

In addition, since a half mirror is formed on the surface of the transparent parts 6 and 14, the dark interior cannot be seen from the display part 11.18 during the daytime, and external light is reflected on the half mirror layer 9.16 to display the image. The portions 11 and 18 appear silvery white, and the display can be clearly seen.

FIG. 6 shows a second embodiment of the present invention, in which the air conditioner switch 2
This is a diagram showing a half-mirror layer 31 formed by half-mirror vapor deposition on the surface of a transparent component 30, and the surface of the transparent component 3o is directly coated with a film by vacuum evaporation or the like. The display part 33 is cut by cutting the coating film 32 with a laser.
is formed. Then, the LCF is attached to the back of the transparent component 30.
34 are arranged. In this embodiment, as in the first embodiment, the light from the lamp (not shown) is transmitted through the LCF34.
The light is polarized so that it travels only in a predetermined direction, passes through the half mirror layer 3, is slightly refracted by the transparent member 3o, and travels through the display section 33 in the upper right direction, that is, in the direction where the driver is located. It has become.

In addition, since the surface of the transparent component 30 is half-mirror-deposited, the dark interior cannot be seen from the display section 33 during the daytime, and external light is reflected on the half-mirror layer 31 and passes through the transparent component 30. Since the light is emitted from the display section 33, the display section 33 appears silvery white, and the display can be clearly seen.

FIG. 7 is a diagram showing a third embodiment of the present invention, and shows the air conditioner switch 2. In FIG. In the second embodiment, half-mirror vapor deposition is applied to the surface of the light-transmitting member 30, but in contrast, half-mirror vapor deposition is applied to the surface of the LCF 34. In this embodiment, the light from the lamp passes through the mirror layer 31, is polarized by the LCF 34 so as to travel only in a predetermined direction, is slightly refracted by the transparent member 30,
The light travels through the display section only in the upper right direction, that is, in the direction where the driver is located. Therefore, no light is reflected on the window and glare is avoided.

In addition, in each of the above examples, for the sake of explanation, the half mirror layer and the coating film are shown to have a considerable thickness, but in reality the half mirror layer is 1 micron or less thick, and the coating film is is on the order of several microns.

(Effects of the Invention) As is clear from the above description, according to the present invention, the light from the light source travels approximately parallel to a predetermined direction by the directional transparent member, so that the light is not dispersed. This has the advantage that there is no need to increase the amount of light from the light source more than necessary. In addition, since a light intrusion restriction means is provided to restrict the intrusion of light into the interior, the interior cannot be seen during the daytime, and external light is reflected by the light intrusion restriction means and can be seen from the display section.
Develop effects such as being able to clearly see the display.

[Brief explanation of drawings]

Fig. 1 is a front view of an air conditioner/economy switch using the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a sectional view taken along line B-B in Fig. 2, Fig. 4, and FIG. 5 is a sectional view of the main part of the first embodiment of the invention, FIG. 6 is a sectional view of the main part of the second embodiment of the invention, and FIG. 7 is a sectional view of the main part of the third embodiment of the invention. FIG. 4... Case, 5.13... Operation knob, 30-...
Transparent parts, 7, 15... lamp, 31... half mirror layer, 10-17, 11, 18, 33... display section,
12・ICF0 6 ・ 14 ・ 9 ・ 16・ 32... Paint film, 9 ・34...

Claims (4)

[Claims] (1) In an illumination display device that transmits light from an internal light source and illuminates a display portion formed by cutting out a coating film on the surface of a transparent display member, the surface of the transparent display member 1. An illumination display device, characterized in that a directional light-transmitting member is disposed in the display device, and a light intrusion regulating means for regulating light intrusion into the interior is provided. (2) A half-mirror layer is formed on the surface of the transparent member for display, and a display portion formed by cutting out the coating film is provided on the surface of the half-mirror layer. Lighting display device. (3) The lighting display device according to claim (1), wherein a half mirror layer is formed between the display transparent member and the directional transparent member. (4) The lighting display device according to claim (1), wherein a half mirror layer is formed on the surface of the directional light-transmitting member.