JPH03194200A - Electric fan - Google Patents

Abstract

PURPOSE:To improve light receiving efficiency, and prevent malfunction by extending outward the reflecting plate of a light receiving part, in an electric fan in which transmitted signal light is received at the light receiving part of a stand unit so as to remote-control an air feed unit. CONSTITUTION:An electric fan 1 comprises an air feed unit 2 and a stand unit 3 for supporting the air feed unit 2, and the air feed unit 2 is remote- controlled by receiving signal light transmitted from a transmittor by the light receiving part 6 of the stand unit 3. In this state, the light receiving part 6 is constituted as follows. Namely, a light receiving unit 9 is arranged inside the stand unit 3, and light receiving element 12 is arranged thereon. An opening part 11 facing to the light receiving element 12, is formed on the stand unit 3 and a reflecting plate 10 is arranged on the rim part thereof. Moreover, a light receiving lens 8 for covering the reflecting plate 10 is attached on the opening part 11. The reflecting plate 10 is extended outward from the rim part of the opening part 11 toward a center part, namely, in a direction going away from the light receiving element 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an electric fan equipped with a remote control function.

(b) Conventional technology As for electric fans equipped with a remote control function, Japanese Patent Application Laid-Open No. 59-68596 and Japanese Patent Application Laid-Open No. 63-8009
The one described in Publication No. 4 is known.

(c) Problems to be Solved by the Invention However, in these electric fans, the light-receiving structure of the light-receiving section of the remote controller provided on the main body side is simply a transparent light-receiving lens for transmitting light (a decorative plastic surface). There is only a light-receiving cover (light-receiving cover), and there is no disclosure of any attempt to improve the light-receiving ability by utilizing the light-receiving lens section or the main body stand section.

The present invention provides an electric fan that can efficiently receive signal light emitted from a transmitter by utilizing a light receiving lens section and a part of the main body stand section.

(d) Means for Solving the Problems This invention consists of an air blower and a stand that supports it, and the air blower is activated by receiving signal light transmitted from a transmitter with a light receiving section provided on the stand. In an electric fan that controls air blowing operation, a light receiving part includes a light receiving element disposed inside a stand part, an opening formed in the stand part so that signal light reaches the light receiving element, and a light receiving part provided at an edge of the opening. It consists of a reflector formed integrally with the stand, and a translucent light-receiving cover attached to the aperture covering the reflector, and the reflector receives signal light incident approximately parallel to the aperture surface. This electric fan extends outward from the edge of the opening toward the center of the opening so as to guide the light to the light receiving element.

In the above, the light receiving cover has a protrusion that is integrally formed with the light receiving cover and protruding toward the light receiving element so that the signal light incident approximately parallel to the aperture surface is reflected back to the light receiving element. Further, the reflecting plate may be configured to extend inward from the edge of the opening toward the center of the opening so as to guide the signal light reflected by the protrusion to the light receiving element.

(E) Function According to the present invention, a reflection plate formed integrally with the stand part is provided at the edge of the aperture, and when the signal light is incident approximately parallel to the aperture surface, The signal light is guided toward the light receiving element by the reflecting plate and is received by the light receiving element.

3. Therefore, since the reflector is formed integrally with the stand, it is possible to reduce the cost and improve the efficiency of light reception to the light receiving element.

Further, when the light receiving case has a protrusion formed integrally with the light receiving case, and the reflecting plate extends inward from the edge of the opening toward the center of the opening, the signal When light is incident approximately parallel to the aperture surface, the signal light is reflected by the protrusion toward the light receiving element, guided toward the light receiving element by the reflecting plate, and received by the light receiving element.

Therefore, the protrusion is formed integrally with the light receiving case, and
Since the reflector plate is formed integrally with the stand part, it is possible to improve the light reception efficiency to the light receiving element at low cost, and furthermore, since the signal light is reflected by both the protrusion and the reflector plate, , it is possible to reduce the influence of external light on the light receiving element and prevent malfunctions.

(f) Examples Hereinafter, the present invention will be described in detail based on examples shown in the drawings. Note that this invention is not limited to this.

FIG. 1 is an overall external perspective view of the electric fan of the present invention.

As shown in the figure, the electric fan l has an air blowing section 2 that generates wind.
It mainly consists of a stand section 3 that supports the air blower section 2, and the air blowing operation of the air blower section 2 is performed by receiving the signal light A transmitted from the transmitter 5 by the light receiving section 6 provided on the stand section 3. can be controlled remotely.

A membrane key 7 is arranged on the stand section 3 and can directly control the blowing operation of the blower section 2 in a system different from the transmitter 5.

FIG. 2 is a configuration explanatory diagram showing the configuration of the light receiving section 6. As shown in FIG.

As shown in the figure, a light receiving unit 9 covered with a shield case is disposed inside the stand portion 3, and a light receiving element 12 is provided on the light receiving unit 9.

A rectangular stand opening 11 is formed in the stand part 3 so that the signal light A can reach the light receiving element 12, and a reflective opening 11 formed integrally with the stand part 3 is formed at the edge of the stand opening +1. The board IO is installed diagonally.

The reflector 10 extends outward from the edge of the stand opening 11 toward the center of the stand opening 11, that is, toward the light receiving element I.
For example, the signal light A is formed to extend away from the stand opening 11 from the front of the stand 3, as shown by arrow B in the figure, and is incident parallel to the opening surface of the stand opening 11. The angle is such that the light is guided to the light receiving element 12.
The angle is appropriately set in the range of 30 degrees to 60 degrees with respect to the opening surface.

A light-receiving lens 8 made of a transparent plastic cover that covers the reflector 1.0 and whose light-receiving surface is smoothly finished is attached to the stand opening 11. I3 is a printed circuit board, and 14 is a back cover.

FIG. 3 is a circuit block diagram showing the control circuit of electric fan I.

As shown in the figure, the transmitter 5 includes an input command section 5a that inputs a command for controlling the blowing operation of the blower section 2, a signal generation circuit 5b that generates a signal corresponding to the input command, and a signal generating circuit 5b that generates a signal corresponding to the input command. It is composed of a light emitting element 5c that outputs as an optical signal.

Further, the light receiving unit 9 disposed inside the stand portion 3 of the electric fan 1 includes a light receiving element 12 that receives signal light via a light receiving lens 8 and converts it into an electrical signal, and an amplification device that amplifies the converted electrical signal. It is composed of a circuit 9a.

The electric fan l is supplied with power from a power supply section 4a, and signals are processed by a microcomputer 4b.
It receives an operation input from the oscillator 4c, and further receives a clock signal from the oscillation element 4c. And accordingly, LED4
In addition to displaying the processing status by d, the motor drive section 4e controls the fan motor 4f, and the swing motor drive section 4g controls the swing motor 4h.

In such a configuration, as shown in FIG. 2, when the signal light A transmitted from the transmitter 5 enters the light receiving lens 8, the signal light A passes through the light receiving lens 8 and is received. The light is received by the element 12.

When the signal light A is incident parallel to the opening surface of the stand opening II from the front of the stand section 3, as shown by the arrow B in FIG. I
The light is reflected by O and guided toward the light receiving element 12, and is received by the light receiving element 2. Note that at this time, if an aluminum plate or the like is attached to the reflection plate 10, the light receiving efficiency can be further improved.

In this way, by forming the reflection plate IO integrally with the stand part 3 at the edge of the stand opening 11 and reflecting the signal light A by the reflection plate IO, the signal light A is reflected parallel to the opening surface of the stand opening 11. Even if the signal light A is incident, the signal light A can be guided in the direction of the light receiving element 12 and received by the light receiving element 12, and the light receiving element I2 can be received at low cost.
It is possible to improve the light receiving efficiency.

Moreover, by finishing the light receiving surface of the light receiving lens 8 smoothly, it is possible to create a configuration in which dust and the like are less likely to adhere and the signal light A can easily enter the light receiving surface.

FIG. 4 is a configuration explanatory diagram showing another embodiment of the light receiving section 6. As shown in FIG.

In this example, the overall configuration shown in FIG. 1 and the control circuit shown in FIG. 3 are the same as the embodiment shown in FIG. 2. Further, in the figure, the same symbols are attached to the same components as those shown in FIG. 2, and the explanation thereof will be omitted.

As shown in the figure, in this embodiment, a horizontal light receiving unit I5 is used to reduce the influence of external light.

The light-receiving lens I6 is provided with a protrusion 17 that projects toward the light-receiving element I2 and is integrally formed with the light-receiving lens I6.

Further, a reflective plate 18 integrally formed with the stand portion 3 is provided diagonally on the edge of the stand opening 11.
The reflector plate ■8 moves inward from the edge of the stand opening Il toward the center of the stand opening 11, that is, toward the light receiving element 1.
It is formed to extend so as to approach 2.

The protrusion 17 directs the signal light A, which is incident from the front of the stand 3 in parallel to the opening surface of the stand opening 11, toward the reflector 18, for example, as shown by arrow C in the figure. For reflection, the angle is 3 with respect to the aperture plane.
The angle of the reflecting plate 18 is set appropriately in the range of 0 degrees to 80 degrees, and the angle of the reflecting plate 18 is set to the aperture surface so that the signal light A reflected by the protrusion 17 is guided to the light receiving element I2.
The angle is appropriately set in the range of 30 degrees to 80 degrees.

In such a configuration, as shown in FIG.
The light is received by the

When the signal light A is incident parallel to the opening surface of the stand opening 11 from the front of the stand section 3, as shown by the arrow C in FIG. 17
is reflected in the direction of the reflecting plate 18, and further reflected by the reflecting plate 1.
8 and guided toward the light receiving element I2, and is received by the light receiving element 12. Incidentally, at this time, the light receiving efficiency can be further improved by attaching an aluminum plate or the like to the reflecting plate 18 as in the navigational embodiment.

In this way, the protrusion 17 is formed on the light receiving lens 16 integrally with the light receiving lens 16, and the reflecting plate 18 is formed integrally with the stand part 3 on the edge of the stand opening II, and the protruding part I7 and the reflecting plate are formed on the edge of the stand opening II. By reflecting the signal light A at both the light receiving element 18 and the light receiving element 18, even if the signal light A is incident parallel to the opening surface of the stand opening 11, the signal light A is guided in the direction of the light receiving element 12. 12, the light receiving efficiency of the light receiving element 12 can be improved at low cost, and furthermore, the influence of external light on the light receiving element I2 can be reduced to prevent malfunctions.

(G) Effects of the Invention According to this invention, a reflection plate is formed integrally with the stand part at the edge of the aperture, and the reflection plate directs the signal light incident approximately parallel to the aperture surface to the light receiving element. Since the light is guided, the efficiency of light reception to the light receiving element 1 can be improved at low cost.

In addition, a protrusion is formed on the light receiving case integrally with the light receiving case, and the reflecting plate is formed by extending a stand part inward from the edge of the opening toward the center of the opening, so that the projecting part and the reflecting plate are formed. If the configuration is such that the signal light incident approximately parallel to the aperture surface is guided to the light receiving element in both cases, the light receiving efficiency to the light receiving element can be improved at low cost, and the light receiving element can be Malfunctions can be prevented by reducing the influence of external light on the device.

[Brief explanation of drawings]

Fig. 1 is an external perspective view showing the entire electric fan of the present invention, Fig. 2 is a configuration explanatory diagram showing the structure of the light receiving section, Fig. 3 is a circuit block diagram showing the control circuit of the electric fan, and Fig. 4 is the light receiving section. FIG. 2 is a configuration explanatory diagram showing another embodiment of the present invention. ■...Fan, 2...Blower section, 3...
・・・Stand part, 5...Transmitter, 6...
・Light receiving part, 7...Membrane key, 8.16・
... Light receiving lens, 9.15 ... Light receiving unit, 2 0 18 ... Reflection plate, 11 ... Stand opening, 2 Light receiving element, 17 Projection. CDj (01 Figure 3 a)

Claims (1)

[Claims] 1. An electric fan that includes an air blower and a stand that supports it, and that controls the air blowing operation of the air blower by receiving signal light transmitted from a transmitter with a light receiving section provided on the stand. In, the light receiving section includes a light receiving element disposed inside the stand section;
An aperture formed in the stand so that signal light reaches the light receiving element, a reflector provided at the edge of the aperture and formed integrally with the stand, and a translucent element attached to the aperture covering the reflector. The light receiving cover includes a light receiving cover, and the reflecting plate extends outward from the edge of the aperture toward the center of the aperture so as to guide the signal light incident approximately parallel to the aperture surface to the light receiving element. A fan. 2. In an electric fan that includes an air blower and a stand that supports it, and controls the air blowing operation of the air blower by receiving signal light transmitted from a transmitter with a light receiver provided on the stand, the light receiver comprises: A light receiving element arranged inside the stand part,
An aperture formed in the stand so that signal light reaches the light receiving element, a reflector provided at the edge of the aperture and formed integrally with the stand, and a translucent element attached to the aperture covering the reflector. a protrusion formed integrally with the light-receiving cover and protruding toward the light-receiving element so that the light-receiving cover reflects the signal light incident approximately parallel to the opening surface toward the light-receiving element; An electric fan, wherein the reflecting plate extends inward from the edge of the opening toward the center of the opening so as to guide the signal light reflected by the protrusion to the light receiving element.