JPS6336616A - Remote control transmitter - Google Patents

Abstract

PURPOSE:To eliminate the trouble of battery replacement and to improve the ease of use by constituting a display section as a light transmission type and arranging a solar battery at the rear part of the display section. CONSTITUTION:In placing a remote control transmitter to a location having a prescribed lightness or over, an electromotive force is generated in a solar battery 5 receiving a light transmitted through the display section 4 comprising a light transmission type liquid crystal or the like and a secondary battery 15 is charged by the power. In this case, when the radiation intensity to the solar battery 5 is excessively large, the secondary battery 15 tends to be over- charged, but the overcharging is prevented by an overcharge preventing circuit 16. Thus, when the transmitter is palced at a location having a prescribed lightness or over, the secondary battery 15 is charged to have a prescribed terminal voltage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a remote control transmission system used in connection with an electric appliance such as an air conditioner.

(Prior Art) As is well known, recent air conditioners, etc.
Of course, many devices use remote control transmission, which allows various controls to be performed remotely without touching the main body of the device. These remote control transmission trowels usually use ultrasonic signals or infrared signals as signals.

By the way, such remote control transmission generally uses dry batteries as a power source. but,
When using dry batteries, you may realize that you have to replace the batteries only when the electromotive force of the dry batteries decreases and the transmitter stops working, or when replacing the batteries (it is easy to make a mistake). There was a problem that it was difficult to use.In particular, if we take recent air conditioners as an example, they automatically detect the temperature etc. of a place where one person is present without the user having to operate a remote control transmitter. Based on this detection result, the remote control transmitter automatically sends out a control signal once every 10 minutes, which inevitably shortens the battery life. For some people, replacing batteries was a hassle.

Therefore, in order to eliminate such problems.

A solar cell with a relatively wide light-receiving area and this person lJ!
Incorporates a secondary battery that is charged by the battery output,
Proposals have been made to eliminate the hassle of battery replacement by using this secondary battery as a power source.

However, it is desired that the remote control transmitter be of a size that allows the user to carry it freely and operate it with one hand.

It is desirable that a large number of key switches for detailed control and a display device for displaying control details etc. be integrated into such a size.

For this reason, if a solar cell with a relatively large light-receiving area is incorporated as described above, the entire transmitter will inevitably become larger, and as a result, there is a problem in that the demand for miniaturization cannot be met.

(Problems to be Solved by the Invention) As described above, there is a problem in that when a solar cell and a secondary battery are incorporated, the entire transmitter becomes larger and becomes difficult to use.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a remote control transmitter that can incorporate a solar cell and a secondary battery without increasing the overall size and further improves ease of use.

[Structure of the Invention] (Means for Solving the Problems) As described above, a remote control transmitter always includes a display device for displaying control contents, etc., and requires a large display area. . The present invention focuses on this point. In other words, in the remote control transmitter according to the present invention, the display section of the display device is configured to be a light-transmissive type,
A solar cell is arranged behind this light-transmissive display section.

(Function) When the display section is composed of a light-transmissive liquid crystal display section or the like, the light transmitted through the display section enters the solar cell. In this case, even if the solar cell is placed in close contact with one display section, there is no support for the answer. Therefore, fat 1! II! Incorporating a pond does not change the external configuration in any way, and in the end, incorporating solar cells can prevent the overall size from increasing.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a remote control transmitter for an air conditioner according to an embodiment of the present invention.

FIG. 2 is a partially exploded perspective view of the transmitter.

In these figures, 1 indicates a flat housing that can be carried with one hand, and 2 indicates a key switch, etc., which is protruded from the surface of the housing 1 and is used to input a setting signal to control an air conditioner (not shown). 3 shows the input switch part of
(a> indicates a setting changeover switch for transmitting the signal inputted by the input switch section 2, 3 (b) indicates a switch for turning on and off the power of the air conditioner, and 4 indicates the input switch section. 2 shows a display section composed of a light-transmissive liquid crystal display that displays the transmission content inputted by 2. Behind the 2-display section 4, there is a light-transmissive display section as shown in FIG. Solar cell 5 serves as a reflector for 4.
is located. The housing 1 also accommodates the following elements, which are connected as shown in FIG. 3 to constitute the main electrical part of the remote control transmitter.

That is, in FIG. 3, 11 indicates a power supply section, and 12
indicates the remote control transmitter. Power supply part 1
1 is a diode 1 for preventing backflow at the output end of the solar cell 5.
3. It is connected to a secondary battery 15 via a charging current limiting resistor 14, and an overcharge prevention circuit 16 is connected between the terminals of the secondary battery 15. On the other hand, the remote control transmitting section 12 includes the input switch section 2 and switches 3(a) and 3 for inputting signals for changing signals, settings, etc. for controlling the air conditioner and for transmitting. (b) and processes the signal from this input circuit 17.

and a processing circuit 18 for generating a code signal for transmission and a display signal for displaying the contents.

It is comprised of one transmitting circuit for transmitting infrared rays as a signal to the air conditioner, and a display circuit 20 for displaying control details etc. on the display section 4.

These circuits operate using the secondary battery 15 as a power source.

With a remote control transmitter configured in this way, if the transmitter is placed in a place with a predetermined brightness or higher,
An electromotive force is generated in the solar cell 5 upon receiving the light transmitted through the display section 4, and the secondary battery 15 is charged by this electric power. At this time, if the irradiation intensity to the solar cell 5 is extremely high, the secondary battery 15 tends to be overcharged, but such overcharging is prevented by the overcharge prevention circuit 16. Therefore, when the secondary battery 15 is placed in a place with a predetermined level of brightness or higher, the secondary battery 15 is always charged so that the terminal voltage is constant.

When a predetermined key switch of the input circuit 17 is operated in a place where the brightness is above a predetermined level, current is supplied from the large IW battery 5 and the secondary battery 15 to one transmitting circuit, and an infrared ray is sent as a remote control signal. When a signal is output and a predetermined key switch of the input circuit 17 is operated in a place where the brightness is below a predetermined level, the secondary battery 15
A current is supplied to 9, an infrared signal is output as a remote control signal, and the function as a remote control transmitter is exhibited.

In this way, since the solar cell 5 and the secondary battery 15 that is charged by the output of the solar cell 5 are incorporated,
Troublesome work such as battery replacement can be eliminated, and ease of use can be improved. In addition, in particular, the third display section 4 is constructed of a light-transmissive liquid crystal, etc., and the solar cell 5 is arranged behind the display section 4, so that space can be used effectively, and the solar cell 5 By incorporating this, it is possible to prevent the overall size from increasing, which is likely to occur.

Therefore, ease of use can be further improved.

In addition, in the embodiment described above, an infrared signal is transmitted, but an ultrasonic signal may be transmitted. Furthermore, the present invention is of course applicable not only to air conditioners but also to remote control transmitters for televisions and other electrical equipment in general.

[Effects of the Invention] As described above, the present invention provides a remote control transmitter that can eliminate the trouble of replacing batteries, suppress the overall size, and further improve ease of use. Can be provided.

[Brief explanation of drawings]

FIG. 1 is a front view of a remote control transmitter according to an embodiment of the present invention, FIG. 2 is a partially exploded perspective view of the transmitter, and FIG. 3 is a block-like electrical diagram of the transmitter. It is a circuit diagram. 1... Housing, 2... Input switch section, 4... Display section. 5...Thick rJI4 battery, 15...Secondary battery, 17.
...Input circuit. 18... Processing circuit, 19... Transmission circuit, 20...
display circuit. Figure 1

Claims (1)

[Claims] A solar cell, a secondary battery charged by the output of the solar cell, a remote control transmitter body using the secondary battery as a power source, and a display means for displaying the contents of the transmitter body, etc. In a remote control transmitter comprising input means such as a key switch for supplying an input signal to the remote control transmitter main body, the display section of the display means is configured to be a light-transmissive type, and the solar cell is arranged behind the display section. A remote control transmitter characterized by being placed in a remote control transmitter.