JPS627232A - Remote control device - Google Patents

Abstract

PURPOSE:To make a remote control device thin-walled by providing a micro-lens irradiating an optical signal from an infrared light emitting diode chip in an optional directivity from the remote control device to a card medium. CONSTITUTION:The operator operates a switch of a keyboard part, a prescribed circuit converts key information into a digital signal and inputted to the infrared light emitting diode LED chip 9. In the light emitting part, an optical medium 8 made of a resin having a refractive index 2 between the optical glass and a semiconductor constituting the micro-lens 7 is used. Thus, an optical signal is outputted efficiently from the LED chip 9 and the directivity of the optical signal from the LED chip 9 by the convex micro-lens 7 is made optional to be dissipated from the remote control device.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a remote control device used for electronic devices such as television receivers and video tape recorders, and in particular to a remote control device using infrared rays. The present invention relates to a wireless remote control device.

BACKGROUND OF THE INVENTION In recent years, remote control devices have been widely applied to electronic devices such as television receivers, and it is expected that they will be increasingly applied to other electronic devices in the future. Furthermore, multi-remote control devices have also appeared that allow a single remote control device to remotely control a plurality of electronic devices.

In addition, there is a demand for a smaller, thinner, and easier-to-use device.

A conventional remote control device will be described below with reference to the drawings. FIG. 5 is a sectional view of a light emitting part of a conventional remote control device, and 22 is a front cover. 23 is an optical filter, and 24 is an infrared light emitting diode (hereinafter simply referred to as IID). 25 is a substrate, and 26 is a back cover.

The operation of the conventional remote control device configured as described above will be described below.

First, the operator operates the keyboard formed on the surface of the front cover 22, and the key information is converted into a digital signal by the electronic circuit formed on the board 25, and the IR:D2
4 can be conveyed. The digital signal transmitted to the LED 24 is output by the LED 24 as an optical signal. After receiving this optical signal, the device to be remotely controlled operates in accordance with the signal.

Problems to be Solved by the Invention However, in the above configuration, the LID 24, which outputs information to be remotely controlled as an optical signal, is mounted in a cylindrical package in the remote control device. However, there was a problem in that it was not possible to obtain a thinner remote control device.

Means for Solving the Problems In order to solve the above problems, the remote control device of the present invention includes an infrared light emitting diode chip that outputs information to be remotely controlled as an optical signal; A card-shaped carrier is equipped with a microlens for emitting an optical signal from a remote control device with arbitrary directionality.

According to the above-described structure, the present invention mounts an infrared light emitting diode as a chip in a remote control device, and is provided with a microlens for emitting an optical signal from the infrared light emitting diode chip in an arbitrary direction. However, the light emitting section of the remote control device can be made thin.

Embodiment Hereinafter, a remote control device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram of the operation panel of a remote control device according to an embodiment of the present invention, FIG. 2 CQ and (b) are cross-sectional views of the light emitting part of the remote control device, and FIG. FIG. 2 is a circuit block diagram for explaining the operation of the remote control device.

In FIG. 1, numeral 1 is a keyboard section composed of, for example, a group of switches for channel selection, and numeral 2 is a battery storage section. 3 is an infrared light emitting diode chip (hereinafter simply referred to as L)
4 is a light-emitting section on which an LED chip (referred to as an ED chip) is mounted, and 4 is an optical signal output from the LED chip. Figure 2 (
In a), 5 is the remote control device n! 5 is a cover film, and 6 is an insulating base material made of PVC1 glass epoxy or the like. 7 is a microlens that makes the directivity of the optical signal output from the LED chip arbitrary; 8 is an optical medium that protects the LED chip and increases luminous efficiency.

9 is an LED that outputs information to be remotely controlled as an optical signal
1o is a bonding wire that connects the LED chip 9 and the electronic circuit inside the remote control device. 11 is a conductor made of copper foil or the like on which gold plating is applied, and 12 is a substrate made of PVC, glass epoxy, etc. In Figure 2(b),
5 to 12 are the same as those shown in FIG. 2 (&).

The operation of the remote control device of this embodiment configured as described above will be described below.

When the operator of the remote control device operates a switch included in the keyboard section 1, the key information is converted into a digital signal and input to the LICD chip 9 through a circuit as shown in FIG. optical signal 4
is output as At this time, in the light emitting section 3, the second
As shown in Figure (a), the optical glass that constitutes the microlens 7 (its typical refractive index value is around 1.6)
The LED Optical signals are efficiently output from chip 9,
Further, the convex microlens 7 allows the optical signal from the LED chip 9 to have arbitrary directivity and to be emitted from the remote control device. Furthermore, as shown in FIG. 2(b), the microlens 7 can be made up of four parts to make the directivity of the optical signal from the LED chip 9 arbitrary, or the position where the LED chip 9 is mounted can be changed. Thus, the directivity of the optical signal 4 from the remote control device can be made arbitrary.

As described above, according to this embodiment, the LED chip 9 outputs information to be remotely controlled as an optical signal, and the microcontroller for emitting the optical signal from the LED chip 9 from the remote control device with arbitrary directivity. By providing the lens 7 on a card-shaped carrier, the remote control device can be made thin and lightweight.

Next, other embodiments of the present invention will be described with reference to the drawings.

FIGS. 3(a) and 3(b) are cross-sectional views of a light emitting part of a remote control device according to another embodiment of the present invention.

In FIG. 3 (2L), 13 is a cover film that covers the remote control device, and 14 is PVC.

It is an insulating base material made of glass epoxy or the like. 15 is LE
This is a reflector that reflects the optical signal output from the D chip, and 16 is a microlens that allows the directivity of the optical signal to be arbitrary. Reference numeral 17 is an optical medium for protecting the LED chip and increasing luminous efficiency, and reference numeral 18 is an LED chip that outputs information to be remotely controlled as an optical signal. 19 is a bonding wire for connecting the LED chip 18 and an electronic circuit inside the remote control device, and 2o is a conductor made of copper foil or the like on which gold plating is applied.

21 is a substrate made of PVC, glass epoxy, or the like. In Fig. 3(b), 13 to 21 are as shown in Fig. 3(a).
It is the same as the one with the same number shown in .

FIG. 1 shows the operation of the remote control device of this embodiment configured as described above.

This will be explained using FIGS. 3(&) and (b) and FIG. 4.

When the operator of the remote control device operates a switch included in the keyboard section 1, the key information is converted into a digital signal and input to the LED chip 18 by the circuit shown in FIG. optical signal 4
is output as

At this time, in the light emitting section 3, as shown in FIG.
Since the optical medium 17 (for example, it can be made of a resin having a refractive index of about 2) having an intermediate refractive index (the refractive index of which is around 3.5) is used, the LED chip 18 is not efficient. A reflecting plate 1 that outputs a good optical signal and has a refractive index between that of the optical medium 17 and a semiconductor.
5 (for example, can be composed of a metal member having a refractive index of about 2.6), the optical signal from the LED chip 18 can be efficiently focused on the microlens 16, and the convex shape The microlens 16 allows the optical signals mentioned above to be emitted from the remote control device with arbitrary directivity. Furthermore, the microlens 16 can be used to arbitrarily control the directivity of the optical signal from the LED chip 18 by using four microlenses 16 as shown in FIG. 3(b).

As described above, according to this embodiment, the LED chip 18 outputs information to be remotely controlled as an optical signal, and the
A reflector plate 15 that efficiently emits the optical signal from the D-chip 18 from the remote control device with arbitrary directivity.
By providing the card-like carrier with the microlens 16 and the microlens 16, the remote control device can be made thin and lightweight.

Although this embodiment describes a remote control device for a television receiver, it is possible to introduce a remote control device similar to the above embodiment to other electronic devices having remote control devices. Not even.

Effects of the Invention As described above, the present invention includes an LED chip that outputs information to be remotely controlled as an optical signal, and a microlens that allows the optical signal from the LED chip to be emitted from a remote control device in an arbitrary direction. By providing the card-like carrier with the remote control device, the remote control device can be made thin and lightweight, and it is possible to provide a remote control device that is easier to use.

[Brief explanation of drawings]

FIG. 1 is a diagram of the operation panel of a remote control device according to an embodiment of the present invention, FIGS. 2(a) and (b) are sectional views of the light emitting part of the remote control device, and FIG.
2L) and (b) are cross-sectional views of the light emitting part of a remote control device according to another embodiment of the present invention, FIG. 4 is a circuit block diagram for explaining the operation of the remote control device, and FIG. 6 is a conventional one. FIG. 3 is a sectional view of a light emitting part of the remote control device. DESCRIPTION OF SYMBOLS 1... Keyboard part, 2... Battery storage part, 3... Light emitting part, 4... Light signal, 6
, 13...Cover film, 6.14...
...Insulating base material, 7,16...Microlens,
8.17... Optical medium, 9.18...
Infrared light emitting diode chip, 10.19... Bonding wire, 11.20... Conductor, 12
゜21...Substrate, 15...Reflector, 2
2...Front cover, 23...Optical filter 1
．． 24... Infrared light emitting diode, 26...
...Baseboard, 26...Back cover.

Claims (2)

[Claims] (1) In a remote control device that can remotely control an electronic device using an infrared light emitting diode, an infrared light emitting diode chip that outputs information to be remotely controlled as an optical signal, and the above infrared light emitting diode chip. 1. A remote control device comprising a card-like carrier and a microlens for emitting optical signals from the remote control device in arbitrary directionality. (2) In order to protect the above-mentioned infrared light-emitting diode chip and increase luminous efficiency, a refractive index between the optical glass and the semiconductor that constitutes the microlens is used between the above-mentioned microlens and the infrared light-emitting diode chip. 2. The remote control device according to claim 1, wherein the remote control device uses an optical medium having: