JP2575573Y2 - Ceiling fan receiver - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote controllable ceiling fan receiver.

[0002]

2. Description of the Related Art In recent years, there has been a demand for a receiving device of a ceiling fan which has a receiving function without a blind spot in a wide area and can be remotely operated from an unspecified place.

Conventionally, a receiving device of this type of ceiling fan has
The configuration was as shown in FIG. 3 and FIG.

[0004] As shown in the figure, a pipe 103 that fits and supports the ceiling fan body is fixed to the center of the motor 102, and a motor cover 104 covers the top and side surfaces of the motor 102. . The motor cover 104
The blades 105 are radially arranged on the lower surface. A control box 106 is attached to the lower end of the pipe 103, and an annular light guide 107 is attached to the outer peripheral surface of the control box 106. The light guide 107 has a plurality of optical signal input portions 107a protruding from the outer peripheral surface thereof, and has a substantially triangular cross section. Also, the light guide 107
A plurality of optical signal output units 107b protrude from the inner peripheral surface of the device, and a plurality of receivers 108 are mounted at positions facing the optical signal output units 107b.

In the above configuration, an optical signal transmitted from a remote control device (not shown) is introduced into the inside of the light guide 107 from an optical signal input portion 107a protruding from the outer peripheral surface of the light guide 107, and the light The light travels while being internally reflected inside the optical body, is transmitted from the optical signal output unit 107b, and is transmitted to the receiver 108. The optical signal received by the receiver 108 is processed in the control box 106 to control the operation of the motor 102.

[0006]

In such a conventional receiver for a ceiling fan, when the illuminator 109 is installed at substantially the same height as the ceiling fan, the infrared light emitted by the illuminator 109 is used. Penetrates into the optical signal input section on the side of the ceiling fan 101 and is input to the receiver 108, which causes noise with respect to the optical signal transmitted from the remote transmission device, and there is a problem that the ceiling fan cannot be operated properly. Was.

[0007] The present invention solves the above-mentioned problems, and an object of the present invention is to be able to correctly receive an optical signal from a remote control device without being affected by light of an illuminator even when the illuminator is installed near a ceiling fan. I do.

[0008]

In order to achieve the above object, the present invention provides a motor cover for surrounding a motor of a ceiling fan body, and a light guide provided annularly on a side peripheral surface of the motor cover. A plurality of optical signal input units on an outer peripheral surface of the light guide, an optical signal output unit provided on an inner peripheral surface of the light guide, and a receiving unit facing the optical signal output unit; In this configuration, a light receiving surface in the depression angle direction and an auxiliary surface in the elevation angle direction are provided adjacent to the optical signal input portion of the body.

[0009]

According to the present invention, a plurality of optical signal input portions formed in the light guide easily take in an optical signal from the remote control device on the input plane 1c by the above-described structure, but do not receive light from the side. Since the input plane 1c and the input plane 1b are almost totally reflected, it is possible to prevent light from the illuminator from affecting as noise.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Since the other parts are the same as the conventional example, the light receiving part will be mainly described.

As shown in FIG.
The light guide 1 attached to a has a plurality of optical signal input portions 1a protruding from the outer peripheral surface thereof. This optical signal input unit 1
“a” has a shape in which a triangular prism is laterally attached to a side surface of the light guide 1, and includes a light receiving surface 1 c in a depression angle direction and an auxiliary surface 1 d in an elevation angle direction. The angle θ between the light receiving surface 1c and the auxiliary surface 1d is set to 90 degrees or less. An optical signal output unit 1b is provided on the inner peripheral surface side of the light guide 1, and the receiver 2 is installed at a position facing the optical signal output unit 1b.

In the above configuration, the illuminator 109 is the main body 1
01, the light emitted from the illuminator 109 travels straight from the side of the ceiling fan main body 1 and the light signal input portion 1a of the light guide 1 is installed.
However, since the incident angle with respect to the light receiving surface 1c and the auxiliary surface 1d is 45 degrees or less, the light is substantially totally reflected by the light receiving surface 1c and the auxiliary surface 1d and does not enter the light guide.

On the other hand, the optical signal transmitted from the floor surface direction is incident on the light receiving surface 1c substantially perpendicularly, so that the optical signal is introduced into the light guide 1 and travels while reflecting inside the light guide 1 to generate an optical signal output portion. 1b irradiates the receiver 3.

As described above, according to the ceiling fan of the embodiment of the present invention, the light receiving surface 1c of the optical signal input portion 1a and the auxiliary surface 1d select the illumination light such as the illuminator 109 which is incident from the side of the ceiling fan. And the optical signal from the remote control device can be reliably received by the light receiving surface 1c.

[0015]

As is apparent from the above embodiments, according to the present invention, a light receiving surface inclined in the depression direction and an auxiliary surface inclined in the elevation direction are provided at the optical signal input portion of the light guide. By selectively reflecting the light of the illumination from the side and receiving the light signal from the remote control device on the light receiving surface, the influence of the strong light of the illuminator illuminated from the side of the ceiling fan can be reduced. It is possible to provide a receiving device for a ceiling fan, which has an effect of improving the S / N ratio of the light guide and reducing the number of the light guide, and which can accurately receive an optical signal.

[Brief description of the drawings]

FIG. 1 is a cutaway side view of a main part of a receiving device of a ceiling fan according to an embodiment of the present invention.

FIG. 2A is a perspective view of a main part of the optical signal input unit, FIG. 2B is a cross-sectional view of the main part, and FIG.

FIG. 3 is a cutaway side view of a main part of a conventional ceiling fan receiving device.

FIG. 4 is a plan view of the light guide.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light guide 1a Optical signal input part 1b Optical signal output part 1c Light receiving surface 1d Auxiliary surface 2 Receiver 101 Main body 102 Motor 104 Motor cover

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification symbol FI H04B 10/105 10/22 (58) Fields surveyed (Int.Cl. ⁶ , DB name) F04D 25/08 304 F04D 25/08 307 F04D 27/00 H04B 9/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A motor cover surrounding a motor of a ceiling fan main body, a light guide provided annularly on a side peripheral surface of the motor cover, and a plurality of optical signal input portions on an outer peripheral surface of the light guide. An optical signal output unit provided on the peripheral surface of the light guide, a receiving unit facing the optical signal output unit, and a light receiving surface in a depression angle direction and an elevation angle direction in the optical signal input unit of the light guide. A ceiling fan receiver with an auxiliary surface adjacent to it.