JP2009005777A - Button with illumination - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a user-friendly button with an illumination having a size smaller than conventional ones. <P>SOLUTION: This button with the illumination includes: two light-emitting diodes LD1 and LD2; a secondary battery 2 for supplying a power to the light-emitting diodes LD1 and LD2; a solar battery 3 for supplying a charging current to the secondary battery 2; a control circuit 4 for controlling the power supply from the secondary battery 2 to the light-emitting diodes LD1 and LD2; and a button body 10 consisting of a three-dimensional circuit board mounted with the light-emitting diodes LD1 and LD2, the secondary battery 2, a solar battery 3, and the control circuit 4. The button body 10 formed of the three-dimensional circuit board is mounted with the light-emitting diodes LD1 and LD2, the secondary battery 2, the solar battery 3 and the control board 4 so as to, different from conventional ones, eliminate any necessity of connecting a separate-body battery case to the button body with an electric wire and provide the user-friendly button with the illumination having the size smaller than the conventional ones. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an illuminated button attached to clothes or the like.

2. Description of the Related Art Conventionally, a lighted button with a built-in light bulb that can be attached to clothes such as a coat has been proposed for the purpose of ensuring the safety of pedestrians at night (see, for example, Patent Document 1). This conventional example consists of a button body with a miniature bulb built in, and a battery case containing a battery that is connected to the button body with a wire and supplies power to the miniature bulb, and the battery case is stored in a pocket of clothes. Then, the miniature light bulb blinks by turning on and off the switch attached to the battery case.
Japanese Utility Model Publication No. 49-44404

  However, since the button body and the battery case are separate in the structure of the conventional example, it is not practical in terms of portability and design, and is not easy to use.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a button with illumination that is smaller and easier to use than conventional ones.

  In order to achieve the above object, the invention of claim 1 provides one or more light emitting diodes, a secondary battery that supplies power to the light emitting diodes, a solar battery that supplies charging current to the secondary batteries, and a secondary battery. A button body that consists of a control circuit that controls the power supply from the battery to the light-emitting diode, and a three-dimensionally molded circuit board on which the light-emitting diode, secondary battery, solar battery, and control circuit are mounted. It is characterized by comprising.

  According to the invention of claim 1, since the light emitting diode, the secondary battery, the solar battery, and the control circuit are mounted on the button body made of the three-dimensional molded circuit board, the separate battery case is attached to the button body as in the conventional example. There is no need to connect with an electric wire, and it is possible to realize a lighted button that is smaller and easier to use than before.

  According to a second aspect of the present invention, in the first aspect of the present invention, the control circuit monitors the output voltage of the solar cell and causes the secondary battery to supply power to the light emitting diode when the output voltage is lower than a predetermined threshold value. Features.

  According to the second aspect of the present invention, the brightness of the surroundings is determined based on the output voltage of the solar cell, and the light emitting diode is automatically caused to emit light when the surroundings are darker than the predetermined brightness. improves.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the button body is provided with a plurality of storage recesses for storing the light emitting diode, the secondary battery, the solar cell, and the control circuit, respectively. It is sealed with a stop resin.

  According to invention of Claim 3, waterproofing improves by sealing with sealing resin.

  The invention of claim 4 is the invention of any one of claims 1 to 3, wherein a reflective layer for reflecting light is provided on the surface of the button body.

  According to the invention of claim 4, even when the light emitting diode is not emitting light, for example, the safety of a pedestrian can be ensured by reflecting the light emitted from the headlight of the automobile by the reflective layer on the button body surface.

  According to the present invention, since the light emitting diode, the secondary battery, the solar battery, and the control circuit are mounted on the button body made of the three-dimensionally formed circuit board, a separate battery case is connected with the button body and the electric wire as in the conventional example. There is no need for connection, and an illuminated button that is smaller and easier to use than before can be realized.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, as shown in FIG. 1, a plurality (two in the illustrated example) of light emitting diodes LD1 and LD2, a secondary battery 2 that supplies power to the light emitting diodes LD1 and LD2, and a charging current to the secondary battery 2 are used. A solar battery 3 for supplying power, a control circuit 4 for controlling the power supply from the secondary battery 2 to the light emitting diodes LD1 and LD2, and the light emitting diodes LD1 and LD2, the secondary battery 2, the solar battery 3 and the control circuit 4 are mounted. And a button body 10 made of a three-dimensional molded circuit board.

  FIG. 2 shows a circuit block diagram of the present embodiment, in which two light emitting diodes LD 1 and LD 2 are connected in parallel between both electrodes of the secondary battery 2 via the control circuit 4. The cathode of the diode D is connected to the positive electrode of the secondary battery 2, the positive electrode of the solar battery 3 is connected to the anode of the diode D, and the negative electrode of the solar battery 3 is connected to the negative electrode of the secondary battery 2. The secondary battery 2 is charged by supplying the output of the solar battery 3 via the diode D. The control circuit 4 compares the output voltage of the solar battery 3 with a predetermined threshold, and when the output voltage is lower than the threshold, the control circuit 4 supplies power from the secondary battery 2 to emit light (lights up or blinks). Let

  FIG. 1A is a perspective view of the present embodiment, and FIG. 1B is a cross-sectional view taken along line X-X ′ of FIG. The button body 10 has a flat disk shape and is formed of a three-dimensional molded circuit board in which a pair of thread holes 14 and 14 penetrating in the thickness direction are formed. On the surface of the button body 10, a pair of first housing recesses 11, 11 in which the light emitting diodes LD 1, LD 2 are housed, a second housing recess 12 in which the secondary battery 2 and the solar cell 3 are housed, and a control circuit 4 Are arranged in parallel at substantially equal intervals so as to surround the thread holes 14 and 14.

  The first housing recesses 11 and 11 are formed in a mortar shape, and light emitting diodes LD1 and LD2 that radiate white light are mounted on the bottom surface thereof. The bottom and peripheral surfaces of the first storage recesses 11 and 11 are mirror-finished by plating or the like, and efficiently radiate white light emitted from the light emitting diodes LD1 and LD2 forward (upward in FIG. 1). It can be done.

  A step portion 12a is formed on the inner peripheral surface of the second storage recess 12, the secondary battery 2 is mounted on the bottom surface side, and the solar cell 3 is mounted on the step portion 12a. That is, the secondary battery 2 and the solar cell 3 are stored in the second storage recess 12 so as to overlap each other, but external light can enter the solar cell 3 through the opening of the second storage recess 12. Although not shown, conductor patterns are formed on the surfaces of the first to third storage recesses 11, 12, 13 and the button body 10, and the light emitting diodes LD 1, LD 2, secondary are formed by the conductor patterns. The battery 2, the solar battery 3, the control circuit 4, and the diode D (not shown in FIG. 1) are electrically connected to constitute the circuit shown in FIG.

  The first to third storage recesses 11 to 13 are each sealed with a sealing resin. However, at least the first housing recesses 11 are sealed with a transparent sealing resin. Thus, waterproofing can be improved by sealing with sealing resin.

  Since the illuminated button of the present embodiment configured as described above has a pair of thread holes 14 formed in the center of the button body 10, for example, clothes such as rain feathers and outerwear worn by children. In addition, the light emitting diodes LD1 and LD2 can be easily attached to a school bag or an umbrella, and the light emitting diodes LD1 and LD2 emit light in the attached state, so that visibility can be improved regardless of day and night. In addition, since the light emitting diodes LD1 and LD2, the secondary battery 2, the solar battery 3, and the control circuit 4 are mounted on the button body 10 made of a three-dimensional molded circuit board, a separate battery case is used as the button body as in the conventional example. There is no need to connect with an electric wire, and it is possible to realize a lighted button that is smaller and easier to use than before. Further, the control circuit 4 monitors the output voltage of the solar cell 3 and supplies power from the secondary battery 2 to the light emitting diodes LD1 and LD2 when the output voltage is lower than a predetermined threshold value. Based on this, the brightness of the surroundings is determined, and when the surroundings become darker than the predetermined brightness, the light emitting diodes LD1 and LD2 are automatically caused to emit light, thereby further improving usability.

  Instead of storing the secondary battery 2 and the solar battery 3 in the second storage recess 12 in an overlapping manner, the secondary battery 2 is stored in the second storage recess 12 as shown in FIG. The circuit 4 may be stored in the third storage recess 13 side by side. Further, if a reflective layer made of alumina, titanium oxide, barium sulfate or the like is formed on the surface of the button body 10, for example, even when the light emitting diode is not emitting light, the light emitted from the headlight of an automobile is transmitted to the button body surface. The safety of pedestrians can be ensured by reflecting on the reflective layer.

FIG. 2A is a perspective view and FIG. 2B is a cross-sectional view taken along line X-X ′ in FIG. It is a circuit block diagram same as the above. It is a perspective view which shows another structure same as the above.

Explanation of symbols

LD1, LD2 Light emitting diode 2 Secondary battery 3 Solar cell 4 Control circuit 10 Button body

Claims (4)

  One or more light emitting diodes, a secondary battery for supplying power to the light emitting diodes, a solar battery for supplying charging current to the secondary batteries, a control circuit for controlling power supply from the secondary batteries to the light emitting diodes, An illuminated button comprising: a button body having a thread hole penetrating in a central portion thereof, comprising a light emitting diode, a secondary battery, a solar battery, and a three-dimensional molded circuit board on which a control circuit is mounted.   2. The illuminated button according to claim 1, wherein the control circuit monitors the output voltage of the solar cell and supplies power from the secondary battery to the light emitting diode when the output voltage is lower than a predetermined threshold value.   2. The button main body is provided with a plurality of storage recesses for storing a light emitting diode, a secondary battery, a solar cell, and a control circuit, respectively, and each storage recess is sealed with a sealing resin. Or the button with illumination of 2.   The button with illumination according to claim 1, wherein a reflection layer that reflects light is provided on a surface of the button body.

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