JP2503815Y2 - Light guide structure of light emitting element and light receiving element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial field of application The present invention relates to the structure of a light guide member of a light emitting element for an indicator and a light receiving element for a remote control of an electronic device, and in particular, a display window for an indicator is used. The present invention relates to a light-emitting element and a light-guiding element light-guiding structure suitable for being used as both a window and a light-receiving window for remote control.

(B) Prior Art Conventionally, as shown in FIGS. 3 and 4, many light guide structures for an indicator and a signal light guide structure for a remote control (hereinafter referred to as a remote controller) have been provided.

In the figure, 2 is a light emitting element for an indicator, which is an LED or a lamp.

Reference numeral 3 denotes a light receiving element for a remote controller, which receives a signal beam of infrared rays or ultrasonic waves emitted from a remote controller transmitter (not shown) and outputs a signal.

Reference numeral 11 denotes a light guide member for an indicator, which has a display window 11a provided on a panel surface (not shown).

Reference numeral 12 is a display device for displaying various signals by a fluorescent display tube (hereinafter referred to as FL). Reference numeral 13 denotes a plate-shaped light guide member, which is generally called a front glass, and is provided with an FL display window 13b and a light receiving window 13a for the light receiving element 3.

Reference numeral 14 is a light guide member for the light receiving element 3 and is provided with a light receiving window 14a.

In the above-described structure, the light guide structure of the electronic device including the light emitting element for the indicator and the light receiving element for the remote controller is the electronic device including the FL12 as shown in FIG. As the light guide member for guiding the signal light beam to the light receiving element 3, the light guide member 13 of the FL 12 is extended slightly to the side and also serves as the light guide member for the remote controller. Therefore, the light receiving window 13a was provided in the frame of the light guide member 13 beside the FL display window 13b.

Further, the indicator display window is provided separately from the remote control light receiving window, and the light emitting element 2 and the light guide member 11 facing the light emitting element 2 are provided at a predetermined position, and the light guide member 11 has a display window 11a.
Had formed.

These windows are fitted into holes provided on the panel surface, and the remote control signal light is received by the light receiving window 13a on the panel surface, guided to the light receiving element 3 through the light guide member 13, and the indicator light emitting element 2 The light flux emitted from the light source was guided to the display window 11a on the panel surface through the light guide member 11.

In an electronic device without FL, as shown in FIG. 4, the light guide member 14 of the light receiving element 3 for remote control and the light guide member 11 of the light emitting element 2 for indicator are separately provided, and each light guide member 14 and
By the light receiving window 14a and the display window 11a provided on the panel 11, these windows are fitted into the holes provided on the front panel, and the light receiving window on the panel surface is formed.
The signal light for remote control is received by 14a, guided to the light receiving element 3 through the light guide member 14, and the luminous flux emitted from the light emitting element 2 for indicator is guided through the light guide member 11 to the display window 11a on the panel surface.

(C) Problems to be solved by the invention However, the above-mentioned conventional light guide structure of the indicator is
In the one that also uses the light guide part for remote control as the light guide member for FL,
The expensive light guide member for FL (front glass) becomes large,
There was a drawback that the cost was very high.

In addition, in a device that does not include an FL, a light guide member for a remote controller has to be adhered to the back surface of the panel, which results in an additional component cost and assembly cost.

This invention was made in view of the above points,
The purpose is to solve the drawbacks of the conventional example, to reduce the cost by using the window of the light emitting element for the indicator and the light receiving element for the remote controller, and to increase the degree of freedom in designing the light emitting element and the light receiving element. It is in the area of providing a light guiding structure.

(C) Means for Solving the Problem The light guide structure of the light emitting element and the light receiving element of the present invention is an electronic device provided with a display window of a light emitting element for an indicator and a light receiving window of a light receiving element for a remote control on a panel surface. A substantially Y-shaped light guide member having first, second and third end faces is provided, and the first end face is set to face the light emitting element,
The light flux of the light emitting element incident from the first end surface is guided to the third end surface, and the remote control signal light beam irradiated on the third end surface is guided to the second end surface set opposite to the light emitting element. It was formed in.

(E) Operation According to the present invention, the substantially Y-shaped light guide member having the first, second and third end faces is provided, and the third end face is used as the window portion for displaying and receiving light. , The luminous flux of the light emitting element for the indicator which has entered from the first end face is reflected by the first reflecting surface in the light guide portion, and then the second reflecting surface, the third reflecting surface and finally the fourth reflecting surface. And is guided to the window which is the third end face.

Further, the signal light beam emitted from the remote control transmitter to the window which is the third end face is guided to the second end face through the remote control light guide portion to operate the light receiving element for the remote control.

(F) Example An example of the light guide structure of the light emitting element and the light receiving element according to the present invention will be described with reference to FIGS. 1 and 2.

The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

In the figure, reference numeral 1 is a substantially Y-shaped light guide member, which has first, second and third end faces 1a, 1b and 1c, and all of the light emitting elements incident from the first end face 1a. In order to guide the light flux to the third end surface 1c which is a window for displaying and emitting light on the panel surface,
The remote control signal light emitted from the remote control transmitter is incident on the first, second, third and fourth reflecting surfaces and the third end surface 1c, and all the light beams are guided to the second end surface 1b. For example, a straight remote control light guide portion 1h is provided so as to be protected.

Indicator light emitting element 2 and remote control light receiving element 3
Are provided so as to face the first end surface 1a and the second end surface 1b of the light guide member 1, respectively.

In the above structure, in the light guide structure of the light emitting element for the indicator and the light receiving element for the remote controller, as shown in FIG. 1 and FIG. 2, the light guide structure having the first, second and third end faces 1a, 1b and 1c The luminous flux emitted from the indicator light emitting element 2 provided with the Y-shaped light guide member 1 and facing the first end surface 1a is incident from the first end surface 1a, and all the incident luminous flux is The light is reflected by the first reflection surface 1d in the light guide portion, then by the second reflection surface 1e, the third reflection surface 1f and finally the fourth reflection surface 1g, and then by the third end surface 1c. Guided to a window.

In addition, the signal light beam emitted from the remote control transmitter to the window which is the third end face 1c is incident from this window,
All of the incident light flux is guided to the second end face 1b through the remote control light guide section 1h, and activates the remote control light receiving element 3.

The window portion that is the third end surface 1c may have any shape other than the above-mentioned rectangle, a circle, a polygon, and the like.

(G) Effect of the Invention According to the light guide structure of the light emitting element and the light receiving element according to the present invention, since the light guide part for the remote control is separated from the light guide member for FL (front glass), the light guide part for FL is guided. Since the member can be made smaller by that amount, there is an effect that the cost can be reduced.

Also, the one that was dedicated to the light guide member for remote control,
Since this is unnecessary, there is an effect that the parts cost and the assembly labor cost can be reduced.

Furthermore, there is no need to provide a dedicated window for the remote controller in the design, so that the degree of freedom is increased.

Moreover, it has excellent features such as a simple structure and easy implementation.

[Brief description of drawings]

1 and 2 show an embodiment of a light guide structure of a light emitting element and a light receiving element according to the present invention. FIG. 1 is a perspective view and FIG. 2 is a side view showing a light guide state. 3 and 4 show a conventional light guide structure for a light emitting element and a light receiving element, FIG. 3 is an exploded perspective view showing a light guide structure of an electronic device having an FL, and FIG. 4 is for a remote controller. FIG. 6 is an exploded perspective view showing a light guide structure of an electric device in which a light receiving window and a display window for an indicator are separately provided. Description of main symbols 1: Y-shaped light guide member 1a: First end surface 1b: Second end surface 1c: Third end surface 1d: First reflection surface 1e: Second reflection surface 1f: Third Reflective surface 1g: 4th reflective surface 1h: Light guide for remote control 2: Light emitting element for indicator 3: Light receiving element for remote control

Claims (1)

(57) [Scope of utility model registration request] 1. An electronic device comprising a display window for a light-emitting element for an indicator and a light-receiving window for a light-receiving element for remote control on a panel surface, and a substantially Y-shaped conductor having first, second and third end faces. An optical member is provided, a first end face is set to face the light emitting element, the luminous flux of the light emitting element incident from the first end face is guided to the third end face, and the remote control is irradiated to the third end face. A light-guiding structure for a light-emitting element and a light-receiving element, characterized in that it is formed so as to guide a signal light beam for use to a second end face set facing the light-emitting element.