JP3080166U - Light emitting device for mobile phone - Google Patents

Abstract

(57) [Summary] It is an object of the present invention to provide a light-emitting device capable of further improving fashionability and originality without lowering antenna efficiency of a mobile phone. [Constitution] Interface connector 1 of mobile phone 9
The light-emitting device 1 is attached to the light-emitting device 0. A coil 3 electromagnetically coupled to a transmission / reception carrier of a mobile phone 9 on a printed circuit board 2 of the light emitting device 1 and a coil 4
A circuit formed by connecting ED5 is provided. This allows
The communication performance of the mobile phone 9 can be fully exhibited without lowering the efficiency of the antenna 12 above the mobile phone 9 used for normal transmission and reception.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a light emitting device that lights up when a mobile phone is in a transmission / reception state.

[0002]

[Prior art and problems]

 In recent years, light-emitting devices, such as LEDs, which indicate that a cellular phone is in an incoming call state, have been actively used to change the light-emitting state to give a fashion effect. This light-emitting device is configured by connecting an LED to an LC resonance circuit that tunes to a transmission / reception carrier of a mobile phone, generates a DC voltage by detection rectification, and uses the DC voltage as the lighting power of the LED.

However, since the light emitting device is mounted on the antenna top of the mobile phone, the antenna efficiency is reduced, and the usable range of the mobile phone, that is, the communication range is narrowed. Therefore, in a place where the radio wave condition is poor, such as an underground shopping mall or a mountainous area, this problem is conspicuous, and the user feels inconvenience in using the mobile phone. In addition, this problem occurred regardless of the communication system (half rate / full rate) of the mobile phone.

[0004] As described above, although the light emitting device is of an antenna top mounted type having a disadvantage in terms of the purpose of use of the mobile phone, young people who attach importance to fashionability and originality are more likely to suffer from deterioration in the communication performance of the mobile phone. They prioritize wearing light-emitting devices, which are a means of self-assertion. Nevertheless, from the point of view of the use of mobile phones, a reduction in communication range is by no means desirable given emergency calls.

[0005] Further, with respect to the above communication method (half rate / full rate), the illuminant flashes only when the light emitting device is mounted on a half rate mobile phone. When mounted, the illuminator does not blink until it is illuminated.

[0006]

【Purpose】

 The present invention has been made in view of the above-described problems, and has as its object to provide a light-emitting device capable of further improving fashionability and originality without lowering the antenna efficiency of a mobile phone. Things.

[0007]

[Means to solve the problem]

 The gist of the present invention is that a coil which is electromagnetically coupled to a transmission / reception carrier wave of a mobile phone is mounted on a substrate which can be mounted on an interface connector of the mobile phone, and a light emitter is connected to this coil via a diode. This is a light-emitting device for a mobile phone, which is characterized by having such a circuit.

[0008] To explain the present invention in more detail, a mobile phone to which the light emitting device is applied is a mobile phone that talks at a high frequency. The high frequency is transmitted or received by a fixed-length or length-adjustable antenna means provided in the mobile phone, and the transmitted radio wave and the received radio wave are generally called transmission / reception carrier waves.

The mobile phone is provided with a connection port for transmitting and receiving data to and from an external device such as a portable personal computer, and this connection port is generally called an interface connector. . At or near the interface connector, there is an external antenna terminal in addition to the antenna provided on the upper part of the mobile phone. When the mobile phone is in the transmitting / receiving state, the transmitted / received carrier leaks from the connection terminal.

[0010] A board is mounted on the interface connector, and a coil that electromagnetically couples to a transmission / reception carrier of the mobile phone leaked from the external antenna terminal is provided on the board, and a rectifying diode is connected to the coil. A circuit to which a light emitting body such as an LED is connected is provided. Further, a cover may be provided on the substrate, and the cover may be partially or entirely formed of a transparent material or a transparent material. For mounting to the board, it may be inserted into the connector, screwed, or mounted with double-sided tape.

The substrate may be a printed circuit board. The coil may be a commercially available coil component or a coil with a pattern printed thereon, and the printed surface may be on one side or both sides of the substrate. Further, the coil shape may be a spiral type or a bellows type. It is preferable that the board and the interface connector are electrically insulated. Further, when the external antenna terminal is provided not in the interface connector but in another place, it is preferable that the substrate and the external antenna terminal are also electrically insulated.

Further, a C-MOS having low power IC may be provided between the rectifying diode of the circuit and the LED which is a light emitter, and the LED may emit light by the output of the C-MOS. Good. The C-MOS is for turning on / off a DC voltage input from a diode at an appropriate cycle and outputting the ON / OFF signal. That is, a constant level voltage is switched between a high level and a zero level and output. The switching cycle may be set appropriately by using a resistor or a capacitor to set the time constant, but may be based on switching of the IC itself.

Further, a plurality of LEDs, for example, three LEDs of red, green, and blue are provided adjacent to each other, and two of the three colors are alternately blinked at an appropriate cycle, and one color is added thereto at an appropriate cycle. You may do so. Specifically, red and green are alternately blinked at an appropriate cycle, and blue which is blinked at an appropriate cycle is added thereto. As a result, the emission colors become four colors. Further, as the LED, a one-chip LED having red, green and blue colors may be used. The method of blinking is not particularly limited, and a blinking circuit may be formed using suitable components. However, it is desirable to form the blinking circuit using a C-MOS which is a low power IC. The blinking time for turning on and off can be set by appropriately setting the time constant with a resistor or a capacitor.

[0014]

[Action]

 Since the light-emitting device of the present invention is configured as described above, when the mobile phone is in the transmitting / receiving state, a voltage is generated in the antenna of the mobile phone, a coil electromagnetically coupled to the antenna is excited, and the voltage is applied to the diode. Is rectified to a DC voltage, and is applied to the LED, which is a light emitting body, so that the LED is turned on.

In the case where the C-MOS is provided between the diode and the LED of the circuit, a voltage rectified to a DC voltage by a diode is applied to the C-MOS, and the C-MOS converts the DC voltage to a resistance. It switches between high level and zero level at the cycle of the time constant set by the capacitor and supplies it to the LED connected to the output terminal of the C-MOS. As a result, the LED blinks at the set cycle regardless of the communication method (half rate / full rate).

[0016] Furthermore, a flash circuit using a C-MOS is configured such that a voltage rectified to a DC voltage by a diode alternately flashes two colors and a C-MOS that flashes independently. The DC voltage is applied to each of the C-MOSs, and each of the C-MOSs is connected to the output terminal of each C-MOS by switching the DC voltage between a high level and a zero level at a time constant cycle set by a resistor and a capacitor, respectively. Supply to each LED. As a result, the two LEDs alternately flash, and the single LED flashes independently at the cycle of the set time constant.

[0017] When the LED that blinks alternately is red and green and one color that blinks alone is blue, red and green, and red and blue are mixed to form purple, and green and blue are mixed. Are mixed and become sky blue. As a result, the emission color becomes four colors, and a composite color of light emission can be created.

[0018]

【Example】

 The light emitting device of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a mobile phone equipped with a light emitting device according to the present invention, and 1 is a light emitting device, and an interface connector 10 below a mobile phone 9. (FIG. 2). Reference numeral 12 denotes an antenna of the main body of the mobile phone 9, 13 denotes a display, 14 denotes a number button, 15 denotes an earpiece, and 16 denotes a mouthpiece.

FIG. 2 is a perspective view of one internal structure of the light emitting device and a lower part of the mobile phone, where 1 is a light emitting device, 1 a is a cover, and 2 is a printed circuit board, which leaks from the external antenna terminal 11 of the mobile phone 9. A coil 3 that is electromagnetically coupled to a transmitted / received carrier wave of the mobile phone 9 that has come out, and an LED 5 that is a light emitter is connected to the coil 3 via a diode 4 for rectification. Reference numeral 10 denotes an interface connector provided below the mobile phone 9, and reference numeral 11 denotes an external antenna terminal provided on the interface connector 10.

FIG. 3 is an electric circuit diagram of the light emitting device. Reference numeral 3 denotes a coil that is electromagnetically coupled to a transmission / reception carrier of the mobile phone 9, 4 denotes a rectifying diode, and 5 denotes an LED. Reference numeral 6 denotes a virtual capacitor, which is a capacitor effect obtained by insulating the printed circuit board 2 or a conductor (not shown) in the circuit and the interface connector 10 from each other, and does not actually exist in the circuit. .

FIG. 4 is an electric circuit diagram for blinking the LED regardless of the communication method, that is, an electric circuit for blinking the LED regardless of the half rate / full rate. 3 is a coil, 4 is a diode, and 5 is an LED. Reference numeral 6 denotes a virtual capacitor, which is a capacitor effect obtained by insulating the printed board 2 or a conductor (not shown) in the circuit and the interface connector 10 from each other, and does not actually exist in the circuit. . Reference numeral 7 denotes a C-MOS, which is a low-power IC, which switches a DC voltage between a high level and a zero level at a period of a time constant set by a resistor 71 and a capacitor 72, supplies the DC voltage to the LED 5, and blinks the LED 5. Let it.

FIG. 5 is a diagram showing a voltage output by the C-MOS. The time constant of the C-MOS 7 is obtained by the resistor 71 and the capacitor 72. The output of the C-MOS 7 has a pulse waveform as shown in the right figure. The DC voltage is controlled to the high level (H) and the zero level (0) and supplied to the LED 5, and the LED 5 flashes.

FIG. 6 is an electric circuit diagram for producing a composite color. Reference numeral 3 denotes a coil that is electromagnetically coupled to a transmission / reception carrier of the mobile phone 9, and reference numeral 4 denotes a rectifying diode. Reference numeral 6 denotes a virtual capacitor, which is a capacitor effect obtained by insulating the printed circuit board 2 or a conductor (not shown) in the circuit and the interface connector 10 from each other, and does not actually exist in the circuit. . Since this circuit produces a composite color, the LED 5 is a one-chip LED incorporating three colors of a red LED 51, a green LED 52, and a blue LED 53. Reference numeral 7 denotes a C-MOS, which is a low-power IC, which switches a DC voltage between a high level and a zero level at a cycle of a time constant set by a resistor 71 and a capacitor 72, and outputs a red LED 51, a green LED 52, and a blue LED. It supplies to LED53 and makes each LED blink. Reference numeral 8 denotes a voltage adjusting resistor.

FIG. 7 is an output pulse waveform diagram of the C-MOS when generating at least four emission colors. (A) In the figure, the circuit is configured so that red and green are inverted or flashed alternately, blue with pulse width 1.5 times that of red / green is added, and the blue is lit even when blue is zero. It was done. Thus, green, red, purple, and sky blue light are emitted. (B) In the figure, the circuit is configured so that red and blue are inverted, that is, alternately flashed, green is added with a pulse width of 1.5 times that of red / blue, and the blue is also turned on when it is zero. It was done. Thereby, blue, red, yellow, and sky blue light are emitted. (C) In the figure, red and green are reversed, that is, alternately flashed, blue is added to the pulse width which is half (red) of red / green, and it is also lit when blue is zero. The circuit is configured as shown in FIG. As a result, green, sky blue, red and purple colors are emitted. Further, by changing the setting of the pulse width or changing the combination of the two colors, it is possible to obtain a more variety of emission colors.

[0025]

【effect】

 As described above, the light-emitting device of the present invention includes, on the board attached to the interface connector of the mobile phone, a coil that electromagnetically couples to the transmitted / received carrier wave leaked from the external antenna terminal, and a rectifying diode in the coil. Since the circuit connected to the LED via the LED is provided, the efficiency of the antenna in the upper part of the main body used for normal transmission and reception is not reduced. Therefore, the communication performance of the mobile phone can be fully exhibited. In addition, since the lower part of the mobile phone emits light, it is rich in fashion and originality.

In the case where a C-MOS is provided in the circuit of the light-emitting device and the LED emits light at its output, the light-emitting device can be operated by a half-rate type by using a C-MOS that operates without any problem even with a small amount of power. The LED, which is a light emitter, flashes regardless of whether it is attached to a telephone or a full-rate mobile phone. Also, the setting of the blinking cycle can be facilitated. Therefore, this light emitting device can meet the desire of the user who wants to wear it regardless of the communication method of the mobile phone, that is, the desire of young people who appeal the fashion and originality by blinking the light emitting body.

Further, when the light-emitting portion of the light-emitting device is composed of LEDs of red, green, and blue light-emitting colors, a desired light-emitting color can be easily created by combining the three colors. That is, multicolor can be easily created. In addition, since a C-MOS that operates at a low voltage is used for the blinking circuit for combining the three colors, the operation can be performed without any problem even with a small amount of power, and the blinking cycle can be easily set. Therefore, it is possible to emit light with excellent visibility by multi-color, and it is also possible to periodically change the emission color, so that the fashion, originality and visibility are both at a high level. Can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mobile phone equipped with a light emitting device according to the present invention.

FIG. 2 is a perspective view of one internal structure of a light emitting device and a lower part of a mobile phone.

FIG. 3 is an electric circuit diagram of a light emitting device.

FIG. 4 is an electric circuit diagram when blinking an LED regardless of a communication method.

FIG. 5 is a voltage output diagram by a C-MOS.

FIG. 6 is an electric circuit diagram when a composite color is created.

FIG. 7 is an output pulse waveform diagram by a C-MOS.

[Explanation of symbols]

1-light-emitting device, 1a-cover, 2-printed circuit board, 3-
Coil, 4-diode, 5-LED, 51-red LE
D, 52-green LED, 53-blue LED, 6-virtual capacitor, 7-C-MOS, 71-resistor, 72-capacitor, 8-resistor, 9-cellular phone, 10-interface connector, 11-external antenna Terminal, 12-
Main unit antenna, 13-display, 14-number button, 15-earpiece, 16-mouthpiece

Claims (7)

[Utility model registration claims] 1. A circuit mountable on a substrate attachable to an interface connector of a mobile phone, comprising a coil electromagnetically coupled to a carrier wave transmitted and received by the mobile phone, and a circuit in which a light emitter is connected to the coil via a diode. Light emitting device for mobile phone 2. A light emitting device for a portable telephone according to claim 1, wherein a low power IC is provided in said circuit, and said light emitter emits light by an output of said low power IC. 3. A plurality of said light emitters, each of which is of a different color, two of which flash alternately in a desired cycle, and the other light emitters also light up or flash in a desired cycle. The light emitting device for a mobile phone according to claim 1, wherein 4. A light emitting device for a portable telephone according to claim 3, wherein said light emitting body is a one-chip LED having red, green and blue colors. 5. A light emitting device for a portable telephone according to claim 3, wherein said light emitting body is blinked by a low power IC. 6. A light emitting device for a portable telephone according to claim 2, wherein said low power IC is a C-MOS. 7. A light emitting device for a portable telephone according to claim 1, wherein said substrate is electrically insulated from an interface connector.