JPS6229022A - Control panel for electric and electronic appliance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control panel for electrical/electronic equipment.

[Prior Art] Conventional operation panels of this type generally include electrical switches such as a power switch and a command input switch as switching means, a variable resistor as variable operation means, and an indicator lamp or light emitting diode as display means. Attach a liquid crystal display, etc. to the board, connect electric wires to each switching means, variable means, and display means as a single wire, and perform some processing on the signals from the operation panel or display on the operation panel. It was an M4 structure that was connected to a device that outputs signals to the vehicle.

[Problems to be solved by the invention] However, when the control panel and the main body are connected with electric wires and signals are transmitted, noise may be received due to the induction of electromagnetic waves, and electrostatic voltage from the human body may enter the machine and damage the equipment. There was a problem with it being damaged. Also, if there is a fire hazard in the external environment due to the generation of sparks from the electrical switch contacts,
There was a problem with the explosive 1-rigger.

An object of the present invention is to provide an operation panel for electrical/electronic equipment that can prevent electrical noise from entering and does not generate sparks.

[Means for Solving the Problems] The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 to 9 corresponding to embodiments. 3.5 and an optical display element 6 are attached, and optical fibers 7 are connected to the optical switch 3.5 and the optical display element 6 as lead wires, respectively.

[Function] In this way, by attaching only the optical means to the substrate 2, the operation panel 1
When the optical fiber 7 is used as a lead wire, noise can be prevented from entering. Also, since the spark is reduced to ζヱ, there is no possibility of it becoming a trigger for an explosion.

[Example] Hereinafter, an example of the present invention will be described with reference to FIG. The operation panel 1 for electrical/electronic equipment of this embodiment has a substrate 2 made of plastic or the like, and a plurality of optical switches 3 are attached to the substrate 2 in two rows as switching means for input operations. There is. An optical variable element 4 as a variable operation means and an optical switch 5 as a power supply switching means are attached to a portion of the substrate 2 that is an extension of the row of these optical switches 3. Furthermore, an optical display cable 6 as input display means is attached to a portion of the substrate 2 parallel to the rows of optical switches 3. On the back side of the board 2, each optical switch 3, 5,
Optical fibers 7 are connected to the optical variable cable 4 and the optical display element 6 as lead wires, respectively. The tip of each optical fiber 7 is connected to a light emitting diode array 8 or a photodiode array 9, and the main body 10
It is connected to the.

The operation panel 1 as described above can be operated optically and displayed optically. The optical signal is transmitted to the main body 10 via the optical fiber 7 and the photodiode array 9, or from the main body 10 to the operation panel 1 via the light emitting diode array 8.

FIGS. 2 and 3 show two examples of optical switches 3.5.

The optical switch 3.5 shown in FIG.
One end of a pair of optical fibers 7 is disposed adjacent to the back surface side of the switch board 11 so as to face each other with a gap 12 in between. 13 is inserted or removed by the action of a push button 14 and a spring 15, thereby switching an optical signal from one optical fiber 7 to the other optical fiber 7. In addition, 16 is a light emitting part that sends an optical signal to one optical fiber 7 on the main body 10 side, 17 is a light receiving part that receives an optical signal from the other optical fiber 7 on the main body 10 side, and 18 is a light emitting part 1
This is a light shielding plate that partitions between the light receiving section 6 and the light receiving section 17.

The optical switch 3.5 shown in FIG. 3 is an example in which there is only one optical fiber 7. That is, the optical switch 3.5 of this embodiment has a mirror operator 1 operated by a push button 14.
A reflector 20 is pivotally supported by a pivot 21 so as to be able to move forward and backward between the tip of the optical fiber 9 and the tip of one optical fiber 7.

Along with this, the other end of the optical fiber 7 is branched into two on the main body 10 side, and one of the branch parts 7A is provided with a light emitting part, and the other branch part 7B is provided with a light receiving part 17. It is arranged.

In such an optical switch 3.5, when the push button 14 is not pressed, the reflector 20 is in a state opposite to the end surface of the optical fiber 7, so that the optical signal input from the branch part 7A is reflected to the optical fiber 7. The light reaches the reflector 20, is reflected there, passes through the optical fiber 7, and is received by the light receiving section 17.

When the push button 14 is pressed, the reflector 20 connects to the optical fiber 7.
, and even if the light emitting section 16 sends an optical signal, the light receiving section 17 will not receive the light.

FIGS. 4 and 5 show two examples of the variable optical element 4. FIG.

The variable optical element 4 shown in FIG. 4 has a structure in which a circular variable reflectance plate 22 is rotatably disposed around the center thereof, facing the end face of the optical fiber 7. Reflectance variable plate 22
has a structure in which the reflectance gradually changes in the circumferential direction. The main body 10 side has the same structure as that shown in FIG.

The variable optical cable 4 shown in FIG. 5 has a structure in which a rectangular variable reflectance plate 22 is disposed facing the end face of the optical fiber 7 so as to be movable in the longitudinal direction thereof. Reflectance variable plate 22
has a structure in which the reflectance gradually changes along the longitudinal direction. The main body 10 side has the same structure as that shown in FIG.

Each of the variable light elements 4 irradiates the variable reflectance plate 22 with a constant amount of light from the light emitting unit 16 through the branching unit 7A and the optical fiber 7, and the variable reflectance plate 22 at the irradiation position.
A reflected light signal corresponding to the reflectance of is received by the light receiving section 18 via the optical fiber 7 and the branch section 7B, and an electric signal etc. corresponding to the amount of received light is output. By rotating or moving the variable reflectance plate 22 in the longitudinal direction, parts with different reflectances come to face the end face of the optical fiber 7, and signals of different sizes can be extracted from the light receiving section 17.

6 to 8 show examples of the optical display element 6. FIG. This light display element 6 is provided with a plurality of light-transmitting windows 24 that match the shape of the numbers to be displayed on the light-shielding casing 23, and a light-transmitting piece 25 is fitted into each light-transmitting window 24. On the back side of the transparent piece 25, an optical path changing body 26 made of a spoon-shaped reflector that changes the optical path to a substantially right angle is provided, and a light shielding casing 2 is provided on the incident side of the optical path changing body 26.
The enlarged diameter portions 7C of the distal ends of the optical fibers 7, which are oriented parallel to the optical fibers 3, are arranged opposite to each other, and the mounting portions 26A of each optical path changing body 26 are crimped to the respective optical fibers 7,
The tip end of each optical fiber 7 is attached to the light shielding casing 23 with an adhesive 27, and the other end of each optical fiber 7 is connected to a light emitting diode array 28. The enlarged diameter portion 7G at the tip of the optical fiber 7 is formed by deforming the tip of the optical fiber 7, for example, by pressing the tip of the optical fiber 7 against a flat plate while avoiding heating and softening.

In such an optical display element 6, when an optical signal is sent from each light emitting diode array 28 to a specific optical fiber 7, the optical path is changed by 90 degrees by the optical path changing body 26 at the tip of the optical fiber 7, and the light is transmitted. The light is incident on the piece 25, and the transparent piece 25
shines and displays numbers. When the optical fiber 7 is provided with the enlarged diameter portion 7c, the light spreads and the surface of the transparent piece 25 can be uniformly illuminated.

FIG. 9 shows an example of the optical display element 6. In this example, a 45° reflective surface 26B is used as the optical path changing body 26.
An example is shown in which the tip of the optical path changing body 26 is fitted into the light-transmitting window 24 of the light-shielding casing 23 using a prism having a shape. In this case, the tip of the optical fiber 7 is h
The light path changing member 26 is in contact with the incident surface of the optical path changing body 26.

In such a light display cable 6, a separate light-transmitting piece 25
is no longer necessary, the structure is simplified, and the optical path changing body 26 is
(Contra) Problems such as clouding of the first surface 26B are also eliminated. In addition,
In the case where variable control is performed digitally, the optical variable element 4 can be omitted.

[Effects of the Invention] As explained above, in the present invention, the operation panel is constructed by attaching the optical switch and the optical display element to the housing plate and connecting them with optical fibers as lead wires, so that the operation panel has excellent electrical noise resistance and It is possible to provide an operation panel with excellent anti-static properties and explosion-proof properties.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the operation panel according to the present invention, and FIG.
3 and 3 are side views showing two examples of optical switches used in the present invention, FIGS. 4 and 5 are perspective views showing two examples of optically variable elements, and FIG. 6 is an optical display element. A perspective view showing an example; FIG. 7 is a perspective view showing the relationship between the optical fiber and the optical path changing body; FIG. 8 is a longitudinal cross-sectional view showing the relationship between the optical fiber, the optical path changing body, and the transparent piece. The top view and FIG. 9 are longitudinal sectional views showing another example of the optical display element. 1... Operation panel, 2... Board, 3... Optical switch,
4... Optical variable element, 5... Optical switch, 6... Optical display element, 7... Optical fiber, 8... Light emitting diode array, 9... Photodiode array. Figure 6

Claims (1)

[Claims] 1. An operation panel for electrical/electronic equipment, characterized in that an optical switch and an optical display element are attached to a substrate, and optical fibers are connected as lead wires to the optical switch and the optical display element, respectively.