JP2007013251A - Remote control transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote control transmitter capable of operating receivers installed over a wide range at the same time without changing the light reaching distance. <P>SOLUTION: The remote control transmitter includes a light emission unit for emitting an infrared ray; a lens for collecting lights emitted from the light emission unit; a reflector located around the focus of the lens, and a drive unit for rocking or turning the reflector wherein the infrared ray emitted from a light emission unit of a remote control receiver is once collected by the lens, the reflector located around the focus is rocked or turned to vary a reflection angle of the infrared ray emitted from the light emission unit thereby switching the directivity of the remote control transmitter. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a remote control transmitter in which directivity can be switched.

  Remote control transmitters are commonly used in electrical equipment as means for transmitting signals to remote receivers.

  When transmitting a signal to the receiver side, the remote control transmitter is generally used for the remote control transmitter in the light receiving section provided in the receiver, but the remote control transmitter is directly used as the light receiving section on the receiver side. When the positional relationship is such that the person operating the remote control transmitter needs to move to an area where light can be received, there is an inconvenience.

As an improvement measure, for example, as shown in FIG. 6, a diffusion plate for diffusing light is installed on the front surface of the light emitting unit of the remote control transmitter so that the light emitted from the remote control transmitter can be spread over a wide range. There is a proposal of a remote control transmitter (see, for example, Patent Document 1). In FIG. 6, 101 is a light emitting part, 102 is a diffuser, and 103 and 104 are infrared signal transmission ranges.
Japanese Utility Model Publication No. 61-021155

  However, in the configuration according to the prior art, the area that can be operated is widened because of the method of diffusing the light with the diffusion plate, but the emission distance of the emitted light from the remote control transmitter is shortened. There was a drawback of having to approach.

  The problem to be solved is to expand the operation area without changing the emission distance of the light emitted from the light emitting unit of the remote control transmitter.

  The most important feature of the present invention is that the operation area is expanded without changing the emission distance by reflecting the light emitted from the light emitting unit to a reflector that oscillates or rotates.

  Since the remote control transmitter of the present invention is a method of reflecting light emitted from the light emitting unit to a oscillating or rotating reflector, the operation area can be expanded without changing the emission distance, and the device is placed over a wide range. There is an advantage that the operating person can respond without moving.

(Embodiment 1)
FIG. 1 is a partial cross-sectional view of an example of an embodiment of the device of the present invention, where 1 is a light emitting section, 2 is a condenser lens, 3 is a reflector, 4 is a drive device, and 5 is a casing of a remote control transmitter. , 6 is infrared rays.

  The infrared rays 6 emitted from the light emitting unit 1 are collected by the condenser lens 2. The optical axis 6A of the infrared ray 6 is reflected like 6A 'by the reflector 3 located in the vicinity of the condensing part. The infrared ray reflected at this time transmits a signal in a range such as 6AA '.

  Next, the case where the reflector 3 is caused to swing is described with reference to FIGS.

  In FIG. 2, when the reflector 3 swings clockwise by the driving device 4, the optical axis 6A of the infrared ray 6 is reflected in the direction of 6B ′ by the reflector 3, and the reflected infrared ray spreads as 6BB ′. It becomes.

  In FIG. 3, when the reflector 3 swings counterclockwise by the drive device 4 as described above, the optical axis 6A of the infrared ray 6 is reflected in the direction of 6C ′ by the reflector 3, and the reflected infrared ray is 6CC ′. It becomes like this. Further, as shown in FIG. 4, the infrared signal can be transmitted to a range such as 6BC ′ by these left and right swinging motions.

  FIG. 5 is a cross-sectional view of an example of an embodiment according to another method, in which the reflector of FIG. 1 is a polyhedral mirror-7. The infrared ray 6 emitted from the light emitting part 1 is condensed by the condenser lens 2 as in FIG. 1, and the optical axis 6A of the infrared ray 6 is reflected as 6A ′ by the reflector 7 located in the vicinity of the condenser part. The At this time, when the reflector 7 is rotated by the driving device 8, the spread of the reflected infrared light is spread as 6BC '.

  As described above, the remote control transmitter of the present invention achieves the purpose of expanding the operation area without changing the emission distance of the light emitted from the light emitting unit with the minimum number of parts.

  By switching with a switch attached to the remote control transmitter, one limited receiver can be operated in a spot manner, and it can also be applied to applications that operate receivers located in a wide range at the same time. .

The block diagram which concerns on embodiment of the remote control transmitter of this invention The block diagram which concerns on embodiment of the remote control transmitter of this invention The block diagram which concerns on embodiment of the remote control transmitter of this invention The block diagram which concerns on embodiment of the remote control transmitter of this invention The block diagram which shows a different example which concerns on embodiment of the remote control transmitter of this invention Explanatory drawing which showed the implementation method of the remote control transmitter in the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light emission part 2 Condensing lens 3 Reflector 4 Drive apparatus 5 Case of remote control transmitter 6 Infrared ray 6A Optical axis of infrared ray 6A 'Optical axis after reflection of infrared ray 6B' Optical axis after reflection of infrared ray 6C 'Infrared ray Optical axis 6 after reflection 6AA 'Signal transmission range after reflection of infrared 6 6BB' Signal transmission range after reflection of infrared 6 6CC 'Signal transmission range after reflection of infrared 6 6BC' Signal transmission after reflection of infrared 6 Range 7 Reflector 8 Drive device 101 Light emitting unit 102 Diffuser plate 103 Infrared signal transmission range 104 Infrared signal transmission range

Claims (1)

A light emitting unit that emits infrared light, a lens that collects light emitted from the light emitting unit, a reflector that is located near the focal point of the lens, and a drive unit that swings or rotates the reflector, and is emitted from the light emitting unit A remote control transmitter capable of switching directivity by changing the angle of reflection of infrared rays.

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