JPH05325706A - Illuminated display device - Google Patents

Abstract

PURPOSE:To provide an illuminated display device capable of preventing the reflection of the light, which has penetrated a display part of a switch-knob in an automobile, onto glass slates of a windshield and door-windows, while the display part is clearly visible by day and night. CONSTITUTION:In an illuminated display device in which the light from an internal light source is transmitted to illuminate a display part 11, a transparent member 6 is formed of aluminum powder mixed, while an LCF 12 is provided on the side of the light source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an illumination display device used for a switch knob of an automobile.

[0002]

2. Description of the Related Art Conventionally, for illumination of a switch knob or the like, a display portion formed by cutting a coating film on a semitransparent member transmits light from a light source such as a lamp provided behind the switch knob. As a result, the display section is illuminated.

[0003]

However, the switch of the automobile is provided near the center of the panel, the light transmitted through the display portion of the switch knob is dispersed, and the dispersed light is reflected on the glass of the front and door windows. It was in the eyes of the driver and passengers and was dazzling and dangerous for driving.

The present invention pays attention to such a problem, prevents the light transmitted through the display portion of the switch knob from being reflected on the glass of the front window or the door window, and visually recognizes the display portion day and night clearly. The purpose of the present invention is to provide an illumination display device capable of performing the above.

[0005]

In order to solve the above-mentioned problems, in the present invention, a display portion is formed by transmitting light from an internal light source and forming a coating film on the surface of a display translucent member. In the illuminating display device adapted to illuminate, the display translucent member is formed of a translucent material and a light reflective material, and the light from the light source is projected in the same direction on the back side of the translucent member for display. A directional member that emits light is provided.

[0006]

In the present invention, the light reflecting material of the display translucent member reflects the light incident on the display unit from the outside in the daytime, and the directivity arranged on the back side of the display translucent member at night. The light from the light source is aligned in the same direction by the member, passes through the transparent material, and is projected.

[0007]

Embodiments of the present invention will now be described in more detail with reference to the drawings. 1 to 4 are views showing an embodiment of the present invention, in which 1 is an air conditioner / eco switch including an air conditioner switch 2 for driving an air control device and an eco switch 3 for limiting the operating time of a compressor,
Reference numeral 4 is a case, 5 is an operation knob for operating the air conditioner switch 2, 6 is a translucent member (transmissive member for display) which is a base portion of the operation knob 5, and 7 is attached to a printed board 8 housed in the case 4. It is a lamp as a light source. Translucent member 6
Is mixed with a light-reflecting material that reflects light from the outside, for example, aluminum powder 9 (other than this, powdered metal such as titanium, chrome, magnesium, or the like having high reflectance, glass powder, glass fiber, or the like) may be mixed. A display unit 11 is provided on which the surface of the translucent member 6 is coated by vacuum deposition or the like, and the coating film 10 is laser-cut to form characters A / C which means an air conditioner.

A light-transmitting member having a directivity that polarizes incident light on the back surface side of the light-transmitting member 6 and projects the light only in a predetermined direction, for example, a member 12 called LCF (light control film). Are arranged.

Reference numeral 13 is an operating knob for operating the eco switch 3, 14 is a transparent member which is a base portion of the operating knob 13, and 15 is a lamp. This translucent member 14 is also molded by mixing aluminum powder 16, and the surface is coated with a film by vacuum vapor deposition or the like.
The display unit 18 formed with the letters
The LCF 19 is disposed on the back side of the.

Non-translucent knob cases 20 and 21 are provided at the rear ends of the operation knobs 5 and 13, respectively. Engaging portions 22 and 23 of the knob cases 20 and 21 are used as a switch body 24 for an air conditioner and an eco-friendly one. Drive units 26 and 2 of the switch body 25
7, the air conditioner switch body 24 and the eco switch body 25 are operated.

The light of the lamp 7 of this embodiment is LCF12.
After being polarized by the light-transmissive member 6 and slightly refracted downward by the translucent member 6, the light is projected toward the upper right as shown in FIG. The light of the lamp 15 is polarized by the LCF 19 and travels toward the upper right. Incidentally, L
The light polarized by the CF 12 is slightly refracted downward by the translucent member 6, but in this embodiment, the polarization angle of the LCF 12 is slightly different from that of the LCF 19.
Both the light from the lamp 7 and the light from the lamp 15 travel in the same direction, which is the position of the eyes of the driver. That is,
Since the lights of the lamps 7 and 15 travel only toward the driver's direction, the display unit 11 and the display unit 18 can be clearly seen from the direction in which the driver's eyes are located.

The transparent members 6 and 14 are made of aluminum powder 9 and 16, respectively.
Since they are mixed and molded, during the daytime, the display units 11, 18
Therefore, the dark interior cannot be seen, and the external light is reflected by the aluminum powders 9 and 16 so that the display portions 11 and 18 appear silver white, and the display can be clearly seen.

When glass fibers are used as the light-reflecting material, the glass fibers are aligned in a predetermined direction so that the glass fibers have a light guiding property and the light incident on the translucent member is projected in the predetermined direction. Can be made Therefore, the LCF provided on the back surface side of the translucent member can be eliminated.

[0014]

As is apparent from the above description, according to the present invention, since the light from the light source travels in the predetermined direction by the directional member having the directivity, the display portion can be clearly seen from the direction. Illuminated. Then, the light of the light source becomes a substantially parallel light beam by a directional member having a directivity and travels in a fixed direction, so that it does not disperse and it is not necessary to increase the light amount of the light source more than necessary. It has the effect of avoiding glare, etc. Also, since the translucent member for display is made of translucent material and light reflective material, the inside cannot be seen in the daytime, and external light is reflected on the translucent material to see the display part, so the display is clear. It has the effect of being visible.

[Brief description of drawings]

FIG. 1 is a front view of an air conditioner / eco switch using the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view of an essential part of an embodiment of the present invention.

[Explanation of symbols]

 4 Cases 5 and 13 Operation knobs 6 and 14 Translucent member 7 and 15 Lamp 9 and 16 Aluminum powder 10 and 17 Coating film 11 and 18 Display part 12 and 19 LCF

Claims (1)

[Claims] 1. An illumination display device which transmits light from an internal light source and illuminates a display section formed by cutting out a coating film on the surface of a display translucent member. Is formed of a light-transmitting material and a light-reflecting material,
An illuminating display device characterized in that a directional member for projecting light from a light source in the same direction is disposed on the back surface side of this display translucent member.