JPH07303081A - Remote control receiver - Google Patents

Abstract

PURPOSE:To attain cost reduction by commonly receiving remote control signals from two light receiving parts with one remote control sensor. CONSTITUTION:A light transmission body 12 provided with a first incident plane 12A for which a remote control signal (a) photodetected by the first light receiving part is made almost vertically incident from a direction A like an arrow and this signal (a) is straightly advanced as it is and emitted, second incident plane 12B to which a remote control signal (b) photodetected by the second light receiving part is made almost vertically incident from a direction B like an arrow, and reflection plane 12C for almost perpendicularly reflecting and emitting the remote control signal (b) made incident from this second incident plane 12B, is arranged between the first and second light receiving parts and a remote control sensor 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control receiver which is applied to various kinds of electronic equipment and which has two light receiving sections for respectively receiving remote control signals from two different directions.

[0002]

2. Description of the Related Art Recently, in-vehicle television receivers have become widespread. However, since the space inside the vehicle is limited, the screen display portion is used in home television receivers requiring a large installation space. Cathode ray tube (CRT)
Instead, a liquid crystal display device (LCD), which is thin and small, has been widely adopted. And this LCD
Many of the devices are configured so that they can be slid and stored in the housing except during viewing, which allows more efficient utilization of the space inside the vehicle.

FIG. 4 and FIG. 5 are perspective views showing a conventional example of a slide-storing type television receiver having such a screen display unit composed of an LCD, and a pair of slidable in a horizontal direction X is provided in a housing 33. The slide plates 34 are attached, and the screen display unit 32 is fixed between the slide plates 34. FIG. 4 shows the screen display unit 32 in the housing 3 except when viewing.
3 shows a stored state in which the screen display section 32 is slid out of the housing 33 at the time of viewing.

In such a slide-storing type television receiver, it is becoming popular to control the operation of the receiver by a remote controller. Therefore, the screen display unit 3
A first light receiving unit 22 and a second light receiving unit 23, which receive a remote control signal transmitted by a medium such as infrared rays, are provided at two different positions so that the receiver operates as a remote control receiving device. It has become. Here, since the posture of the screen display unit 32 changes depending on the stored state as shown in FIG. 4 and the used state as shown in FIG. 5, two screens are provided so that the remote control signal can be received in any state. Two light receiving portions 22 and 23 corresponding to remote control signals from different directions A and B are provided at different positions. Reference numeral 31 is a remote control transmitter that transmits a remote control signal.

FIG. 6 shows a specific configuration of a conventional remote control receiver, which is an L-shaped case 21 of the screen display unit 32.
On one side and the other side that is approximately 90 degrees apart from this,
A first light receiving portion 22 and a second light receiving portion 23 are provided respectively. The first light receiving portion 22 includes an opening 24, a visible light cut filter 25 that covers the front surface side, and a transparent plate 26 that covers the front surface side.
A first remote controller sensor 29A mounted on the substrate 30A is arranged on the back surface of the. In addition, the second light receiving unit 23
Is formed of an opening 27 and a visible light cut filter 28 that covers the front side of the opening 27, and the second remote control sensor 29 mounted on the substrate 30B is provided on the back surface of the second light receiving section 23.
B is arranged. Each board 30A, 30B is case 2
It is fixed to 1.

In such a configuration, the remote control signal output from the remote control transmitter 31 and received by the first light receiving section 22 proceeds straight as it is and is incident on the surface of the first remote control sensor 29A substantially vertically. Received. Similarly, the remote control signal received by the second light receiving unit 23 is
As it is, it goes straight on and is incident on the surface of the second remote control sensor 29B substantially perpendicularly to be received. Each remote sensor 2
9A and 29B have directivity, and this sensitivity deteriorates as the incident angle θ of the remote control signal deviates from the vertical plane. When the incident angle θ approaches 0, the remote control signal cannot be received.

[0007]

By the way, in the conventional remote control receiving device, it is necessary to provide a remote control sensor for each of the two light receiving portions, so that there is a problem that an increase in cost cannot be avoided.

That is, two remote control sensors 29
A and 29B are prepared and each is an independent substrate 30
Since it is necessary to mount them on A and 30B, not only the number of parts to be used increases but also the labor of assembling increases.
To solve such a problem, as shown in FIG. 7, one remote control sensor 29 is arranged at a position where the remote control signals received by the first light receiving unit 22 and the second light receiving unit 23 are commonly incident. It is possible to do it. However, in such a configuration, the incident angle of the remote control signal incident from any one of the light receiving units becomes substantially 0 (in the case of the example of FIG. 7, the incidence of the remote control signal from the second light receiving unit 23). When the angle θ becomes substantially 0), normal operation as a remote control receiver becomes impossible.

The present invention has been made to solve the above problems, and one remote control sensor can commonly receive remote control signals from two light receiving portions to reduce costs. The purpose is to provide a device.

[0010]

In order to achieve the above-mentioned object, the present invention according to claim 1 is a remote controller having two light receiving portions for receiving remote control signals from two different directions in a controlled device body. In the receiving device, a remote control signal received by one light receiving unit is made to enter substantially vertically and the first incident surface for making this signal go straight forward and emitted, and a remote control signal received by another light receiving unit is made to enter substantially vertically. A light guide body having a second incident surface for reflecting and a reflection surface for reflecting and emitting the remote control signal entered from the second incident surface, and one remote controller for entering the remote control signal emitted from the light guide body It is characterized by having a sensor.

[0011]

According to the configuration of the present invention according to claim 1, the remote control signal received by one light receiving portion is directly advanced by the first incident surface of the light guide and is emitted, and the other light receiving signal. The remote control signal received by the section is reflected by the reflecting surface of the light guide and is emitted, and all the remote control signals emitted from this light guide are made incident on one remote control sensor and commonly received.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a remote control receiver of the present invention, and FIG. 2 is an enlarged view of the main part of FIG. Case 1
On one side and the other side that is approximately 90 degrees apart from this,
A first light receiving portion 2 and a second light receiving portion 3 are provided respectively. The first light receiving portion 2 is composed of an opening portion 4, a visible light cut filter 5 covering the front surface side, and a transparent plate 6 covering the front surface side, and the second light receiving portion 3 has an opening portion 7.
And a visible light cut filter 8 covering the surface side. Reference numeral 9 denotes a remote control sensor arranged on the back surfaces of the first light receiving section 2 and the second light receiving section 3, which is mounted on the substrate 10. The remote control sensor 9 has the first light receiving section 2 and the second light receiving section 2 as will be described later. The remote control signal from the second light receiving unit 3 is arranged so as to be commonly received. 11 is direction A
From the direction B and the first light receiving portion 2 and the second light receiving portion 3 respectively.
It is a remote control transmitter that transmits a remote control signal to the.

Reference numeral 12 is a light guide made of resin or the like, and is arranged between the first light receiving portion 2 and the second light receiving portion 3 and the remote control sensor 9. As shown in the enlarged view of FIG. 2, the light guide 12 allows a remote control signal a from the direction A received by the first light receiving unit 2 to be incident substantially vertically as indicated by an arrow, and the signal is directly advanced. The first incident surface 12 that emits light by
A, a second incident surface 12B on which the remote control signal b from the direction B received by the second light receiving unit 3 is incident substantially vertically as indicated by an arrow, and the remote control signal b incident from the second incident surface 12B. Reflective surface 12 that reflects and emits light at a substantially right angle
The first incident surface 12A and the reflecting surface 12C are continuously formed in a stepwise manner. The remote control signals a and b emitted from the light guide body 12 are both incident on the remote control sensor 9 and commonly received.

In the above-mentioned structure, the first part is formed of the visible light cut filter 5 which is output from the remote control transmitter 11 and covers the opening 4 and the front side thereof, and the transparent plate 6 which covers the front side. The remote control signal a received by the light receiving portion 2 of the light enters the first incident surface 12A of the light guide body 12 substantially perpendicularly, is straightened out as it is, and then goes straight on to the surface of the remote control sensor 9. It is received by being incident almost vertically. Similarly, the remote control signal b received by the second light receiving unit 3 including the opening 7 and the visible light cut filter 8 covering the front surface side is the light guide 1
2 is incident on the second incident surface 12B substantially perpendicularly and the reflecting surface 12C
After being emitted by being reflected at a substantially right angle by, the light beam goes straight on as it is and is incident on the surface of the remote control sensor 9 substantially perpendicularly to be received. Thereby, the remote control sensor 9 can commonly receive the remote control signals a and b received by both the first light receiving unit 2 and the second light receiving unit 3.

As described above, according to the present embodiment, the remote control signal a from the direction A received by the first light receiving section 2 is made to enter substantially vertically as indicated by the arrow, and this signal is directly advanced and emitted. The first incident surface 12A, the second incident surface 12B on which the remote control signal b from the direction B received by the second light receiving section 3 is incident substantially vertically as indicated by the arrow, and the second incident surface 12B is incident. The light guide 12 having a reflecting surface 12C that reflects and emits the remote control signal b at a substantially right angle,
Since it is arranged between the first light receiving unit 2 and the second light receiving unit 3 and the remote control sensor 9, the remote control signals a and b from the two light receiving units 2 and 3 are transmitted by this one remote control sensor 9. Can be received in common. Therefore,
Since only one remote control sensor 9 as a component and one substrate 10 for mounting the remote control sensor 9 are required, the number of components can be reduced and the assembling work can be simplified. Further, as the light guide body 12, it is possible to easily select one having a lower cost than the remote control sensor 9. Therefore, the cost can be reduced.

FIG. 3 is an enlarged view showing another embodiment of the present invention. As the light guide 13, the remote control signal a from the direction A received by the first light receiving section 2 is made substantially vertical as shown by the arrow. The first incident surface 13A that allows the incident light to go straight ahead and be emitted as it is, and the second remote-control signal b from the direction B received by the second light receiving unit 3 that is incident substantially vertically as indicated by the arrow
Incidence surface 13B and the inclined surface 13 for reflecting and emitting the remote control signal b incident from the second incidence surface 13B.
It shows an example configured to have C. That is, in this embodiment, the inclined surface 13C is formed in place of the reflective surface 12C of the light guide 12 in the above-described embodiment, and the inclined surface 13C is formed.
It is configured to give a reflection function corresponding to C. In this case, the degree of inclination of the inclined surface 13C of the light guide body 13 is set to a range in which the remote control signal b which has entered the second incident surface 13B and has proceeded straight can be emitted toward the remote control sensor 9. To do.

According to such another embodiment, the remote control signal b received by the second light receiving section 3 is incident on the second incident surface 13B of the light guide 13 substantially perpendicularly and is caused by the inclined surface 13C. After being reflected and emitted, it goes straight ahead and enters the surface of the remote control sensor 9 after being slightly bent. However, as in the above-described embodiment, one remote control sensor 9 controls the remote control from the two light receiving portions 2 and 3. Since the signals a and b can be commonly received, the same effect can be obtained. In addition to this, since the inclined surface 13C for reflecting the remote control signal b only needs to be processed so as to have a predetermined inclination angle, complicated processing is not necessary, which is advantageous in cost. can get.

In the text, the slide storage type television receiver mounted on the vehicle has been described as an example, but the present invention is not limited to this, and any device in which the posture of the controlled device controlled by the remote controller changes depending on the usage form. For example, it can be applied not only to electronic devices but also to all devices. Further, the material of the light guide is not limited to a particular material, and any material can be selected as long as it has a light guide function.

[0019]

According to the first aspect of the present invention, the remote control signal received by one light receiving portion is made incident substantially vertically, and is made to go straight ahead and is emitted as it is. Second: The remote control signal is incident almost vertically
Since it is configured to include a light guide body having an incident surface and a reflection surface that reflects and emits the remote control signal that has entered, and one remote control sensor that receives the remote control signal that has been emitted from this light guide body. Since one remote control sensor can receive the remote control signals from the two light receiving sections in common, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a remote control receiver of the present invention.

FIG. 2 is an enlarged view showing a main part of this embodiment.

FIG. 3 is an enlarged view showing another embodiment of the present invention.

FIG. 4 is a perspective view showing a stored state of a slide storage type television receiver to which the present invention is applied.

FIG. 5 is a perspective view showing a usage state of a slide storage type television receiver to which the present invention is applied.

FIG. 6 is a block diagram showing a conventional remote control receiver.

FIG. 7 is a configuration diagram illustrating a conventional problem.

[Explanation of symbols]

 2 1st light receiving part 3 2nd light receiving part 4,7 Opening part 5,8 Visible light cut filter 6 Transparent plate 9 Remote control sensor 11 Remote control transmitter 12,13 Light guide 12A, 13A 1st incident surface 12B, 13B 2nd incident surface 12C reflective surface 13C inclined surface

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location H04B 10/22 H04Q 9/00 301 E 311 U

Claims (1)

[Claims] 1. A remote control receiver comprising two light receiving sections for receiving remote control signals from two different directions in a controlled device body, wherein a remote control signal received by one light receiving section is made to enter substantially vertically. A first incident surface for directly advancing this signal and emitting it, a second incident surface for making a remote control signal received by another light receiving section enter substantially vertically, and a remote control signal made incident from this second incident surface. A remote control receiving device comprising: a light guide having a reflection surface for reflecting and emitting the light; and one remote control sensor for inputting a remote control signal emitted from the light guide.