JP2550075Y2 - Switch with display device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knob for operating a switch and a switch with a display device for illuminating and displaying the outer periphery of the knob with a single light source.

[0002]

2. Description of the Related Art Heretofore, as a switch with a display device of this type, for example, a technique disclosed in Japanese Utility Model Application Laid-Open No. 62-104191 has been generally used. In this method, a flat light guide plate is fixedly arranged around a knob, and illumination of a single light source is derived from the outer periphery of the knob, and the illumination is derived by an indicator via a light guide path provided in the knob. Things.

[0003]

However, in the above-mentioned prior art, since the light source is arranged outside the knob, the illuminance of the illumination around the knob and the illumination of each indicator becomes non-uniform, causing uneven illumination. And the entire switch becomes large.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a light- transmitting display panel on an operation surface.
And a light source for illuminating the display panel.
The light source is unitary and
The knob is disposed substantially at the center and below the knob, and the knob is
Translucent side walls to direct source illumination to the outer perimeter of the knob
A light-guiding section, and the outer periphery of the knob is provided with the light-guiding section.
The illuminating light introduced through the light unit is guided toward the operation surface.
A light-transmitting light guide tube that emits light is arranged, and the light guide tube is non-light-transmitting.
The cover and the light guide tube are fitted into a cover made of a material.
Is to solve the above-mentioned problem by sticking to the case .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a switch with a display device according to the present invention will be described in detail with reference to the accompanying drawings. Reference numeral 1 denotes a case, on which the movable platen 2 is fitted so as to be vertically movable. Movable board 2
Is a movable contact piece 5 urged upward by a compression spring 3 and slidably connected to a fixed contact 4 disposed in the case 1.
It has. In addition, the movable platen 2 has an arm portion 2a protruding from the lid 1a of the case 1.

Reference numeral 6 denotes a knob formed in a cylindrical shape or a rectangular tube shape. The knob is fitted around the lower end with the arm portion 2a, and has a translucent display panel 7 on the operation surface 6a at the upper end. Knob 6
The upper part is composed of an operation part 8 made of a non-translucent material, and the lower part is composed of a light guide part 9 made of a translucent material. Both parts are integrally formed by ultrasonic welding or two-color molding. Note that the knob 6 is not limited to the above configuration, and the operation unit 8 may be integrally formed of the same material as the light guide unit 9, and a non-translucent coating film may be applied to the outer periphery of the operation unit 8.

Reference numeral 10 denotes a single light source, which is constituted by a lamp, a light-emitting diode, or the like, and is disposed at the center and below the knob 6 in the lid 1a of the case 1. Reference numeral 11 denotes a light guide tube formed of a translucent material in a cylindrical shape or a rectangular tube shape, and the knob 6 is inserted therethrough. The light guide tube 11 is fitted into a cover 12 made of a non-translucent material, and the cover 12 is fixed to the case 1 by fitting the cover 12 with a cover 1 a of the case 1. Light guide tube 1
Reference numeral 1 denotes a display surface 11a at the upper end, which is formed around the knob 6 in the same direction as the operation surface 6a. Reference numeral 13 denotes a panel on which the case 1 is mounted.

Next, the operation of the switch with a display device having the above configuration will be described. When the knob 6 is pressed, the movable platen 2 moves down to bring the movable contact piece 5 into contact with the fixed contact 4 to make it conductive. Light source 1
Illumination emitted from the light source 10 in a lighting state of 0
14 illuminates the whole inside of the knob 6. Part of the knob 6
The illuminated light 14 hitting the display plate 7 to be formed passes through the display plate 7 and is led out of the knob 6 from the direction of the operation surface 6a. Also the knob
Illumination 14 hitting the light guide 9 constituting a part of the light guide 6 passes through the light guide 9 of the knob 6 and is introduced into the light guide tube 11 to cover
-12, the cover 12 and the operation unit 8
And is led out of the panel 13 . The illumination 14 emitted from the single light source 10 is
If, you illuminated display is derived from the two positions of the display surface 11a of the outer periphery of the knob 6. Such a switch with a display device,
For example, switches used in emergency situations such as hazard switches for vehicles
Ru is used to switch. The switch with a display device is
Display plate 7 showing the function of the switch and the ring around the knob 6
The display position of the switch can be emphasized by illuminating the display surface 11a . For example, panel 13
When a plurality of knobs 6 are arranged side by side,
By disposing the light guide tube 11 in one, the circumference of the knob 6 can be increased.
The surrounding display surface 11a is illuminated in a ring shape to be used in an emergency.
The position of the switch can be identified at a glance.
The display panel 7 and the display surface 11a are illuminated by a single light source.
10 is disposed substantially at the center and below the knob 6,
The light guide tube 11 fitted in the cover 12 is arranged in the surrounding area.
Thus, the entire display surface 11a is illuminated with uniform brightness without unevenness.
You. The present invention is not limited to the configuration of the push button switch shown in the above embodiment, but may be, for example, a tumbler switch.

[0009]

[Effects of the Invention] The present invention has the following unique effects.
You. (1) The present invention provides a knob having a translucent display plate on the operation surface.
And a light source for illuminating the display panel.
In this case, the light source is a single light source and is substantially in the middle of the knob.
The knob is located at the center and below, and the knob illuminates the light source.
A light-transmitting light guide is provided on the side wall so that it can be led out around the knob.
Having, and around the knob, through the light guide section
Light transmissive to guide the introduced illumination toward the operation surface
And a light guide tube made of a non-translucent material.
The cover and the light guide tube are fitted in the bar,
By being fixed, a single light source was provided on the operation surface of the knob
In addition to lighting the display board, the light guide tube provided around the knob
Switch used in an emergency by lighting in a ring
The position of the knob can be determined at a glance in the dark, etc.
The knob can be illuminated with emphasis as possible. (2) In the present invention, the light source is a single light source and the knob
Approximately at the center and below, the knob has a light-transmitting light guide on the side wall
And the outer periphery of the knob is guided through the light guide section.
A translucent light guide that guides incoming illumination toward the operation surface.
A light guide tube is disposed in a cover made of a non-translucent material.
The top of the light guide tube has a uniform and even brightness
Now, the illumination display is performed in a ring shape.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 6 Knob 6a Operation surface 7 Display plate 8 Operation part 9 Light guide part 10 Light source 11 Light guide cylinder 11a Display surface 14 Illumination

Claims (1)

(57) [Scope of request for utility model registration] 1. A translucent display plate (7) on an operation surface (6a).
And a light for illuminating the display panel (7)
And a light source (10).
(10) is a single unit and substantially the center of the knob (6)
And the knob (6) controls the illumination (14) of the light source (10).
A light-transmitting side wall is drawn out around the knob (6).
A light guide (9) is provided, and the light guide (9) is provided around the knob (6).
The illumination (14) introduced through the operation surface (6)
a) a light-transmitting light guide tube (11) leading out in the direction is arranged, and the light guide tube (11) is provided with a cover (1) made of a non-light-transmitting material;
2) The cover (12) and the light guide tube (11) are fitted into the case.
(1) A switch with a display device, which is fixed to (1) .