JPH08194446A - High brightness light-emitting diode flickering device - Google Patents

Abstract

PURPOSE: To require no transmitting circuit for controlling, shorten a time for designing and the like, and downsize a device and reduce a manufacturing cost resulting from the reduction of the number of parts by utilizing a flickering type light-emitting diode for a control portion. CONSTITUTION: A high brightness light-emitting diode L2 is used in a flickering portion, a transistor TR1 is used in a drive portion, and a flickering type light- emitting diode L1 is used instead of an oscillator OS for control signal generation used in a current light emitting-diode flickering device in a control portion. When a positive voltage is applied to the flickering type light-emitting diode L1 from the positive voltage side of a power source portion, the flickering type light-emitting diode L1 starts to flicker. Since the cathode of the flickering type light-emitting diode L1 takes a voltage in response to flickering (a square wave), the voltage is amplified by the drive portion TR1 as a control signal so as to switch on and off. The high brightness light-emitting diode L2 is flickered by the switching of the drive portion TR1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved device for repeatedly flashing a high-intensity light emitting diode.

[0002]

2. Description of the Related Art Conventionally, in order to blink a light emitting diode, a drive circuit is controlled by a control signal generated by an oscillator produced by using 5 to 6 parts such as a transistor and an integrated circuit to emit light. The diode was blinking.

This device is generally as shown in FIG. 3, in which a control signal produced by an oscillator OSC is amplified by a transistor TR1 and converted into an ON-OFF signal, and a light emitting diode L2 is energized. And the light emitting diode L2 is made to blink by repeating this. Further, recently, a blinking type light emitting diode for display has been developed and put on the market.

[0004]

However, the flashing type light emitting diode which has recently been sold does not have sufficient brightness, so that if the surroundings are slightly bright, the flashing cannot be confirmed and the function as a display is not sufficient. It was Therefore, as a display for which sufficient luminance is required, a conventional oscillator OSC is used.
A light emitting diode blinking device that utilizes

However, this light emitting diode blinking device also requires the number of parts in the oscillation circuit portion due to the presence of the oscillator OSC, which causes problems such as an increase in the size of the entire device and an increase in cost. The present invention solves this problem by using a blinking type light emitting diode in the control unit,
It is an object of the present invention to eliminate the need for a conventional oscillator circuit for control signals, shorten the time for designing, etc., reduce the size of the device by reducing the number of parts, and reduce the manufacturing cost.

[0006]

In order to achieve the above object, the present invention provides a blinking section using a high brightness light emitting diode,
In a high-intensity light emitting diode blinker consisting of a drive unit that drives the blinking operation of the blinking unit and a control unit that generates a blinking control signal, a blinking light emitting diode is used for the control unit, and it is driven by the voltage change of the blinking light emitting diode. A high-intensity light-emitting diode blinking device, characterized in that a high-intensity light-emitting diode blinks by operating a unit.

[0007]

Embodiments will be described below with reference to the illustrated embodiments. Figure 1
It is a circuit diagram showing a high-intensity light emitting diode blinking device according to the present invention, the high-intensity light emitting diode blinking device according to the present invention comprises a blinking unit, a drive unit, a control unit and a power supply unit.

A high-brightness light emitting diode L2 is used for the blinking portion, a transistor TR1 is used for the drive portion, and the control portion is used in the conventional light emitting diode blinking device shown in FIG. A blinking light emitting diode L1 is used instead of the oscillator OSC for generating the control signal.

Although the transistor TR1 is used for the control section in the embodiment, it is also possible to use an integrated circuit having a similar function. Moreover, FIG. 1 and FIG.
In the figure, R1 is a current limiting resistor for the high-intensity light emitting diode L2, R2 is a base current limiting resistor, and R3 is a bias resistor.

FIG. 2 is a cross-sectional explanatory view of a display device 1 according to the present invention, in which a transparent panel is used to display characters and figures which react to light on a power source section using AAA dry cells 2 and 3. The panel 4 is provided, and the high-intensity light emitting diodes L2 and L3 are arranged so that light is projected in one direction from the light-shielding portion provided at the side end portion of the display panel 4 toward the other end portion of the display panel 4. The high-intensity light-emitting diodes L2 and L3 according to the invention are caused to blink, and the letters and figures that react to the light of the display panel 4 are blinked and displayed.

[0011]

The operation of the present invention will be described together with the operation of the embodiment. When a positive voltage is applied to the blinking light emitting diode L1 from the positive voltage side of the power supply unit, the blinking light emitting diode L1 starts blinking. Since the cathode of the blinking type light emitting diode L1 has a voltage (rectangular wave) according to the blinking, this voltage is amplified as a control signal by the drive unit (transistor TR1 in the embodiment) and switched on and off.
By switching the drive unit (transistor TR1), the high-intensity light emitting diode L2 blinks.

【The invention's effect】

As compared with the conventional light emitting diode blinking device, since a transmitting circuit for a control signal is not required, it is possible to shorten the time for design and the like, and to reduce the device size and manufacturing cost by reducing the number of parts. It was

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a high-intensity light-emitting diode blinking device according to the present invention.

FIG. 2 is an explanatory sectional view of a display device using the present invention.

FIG. 3 is a circuit diagram showing a conventional light emitting diode blinking device.

[Explanation of symbols]

 L1. . . . . Flashing type light emitting diode TR1. . . . Transistors L2, L3. . High brightness light emitting diode OSC. . . . Transmitter R1. . . . . Current limiting resistor for high brightness light emitting diode R2. . . . . Base current limiting resistor R3. . . . . Bias resistance 1. . . . . . Display device 2, 3. . . . Dry battery 4. . . . . . Display panel

Claims (1)

[Claims] 1. A blinking section using a high brightness light emitting diode,
In a high-intensity light emitting diode blinker consisting of a drive unit that drives the blinking operation of the blinking unit and a control unit that generates a blinking control signal, a blinking light emitting diode is used for the control unit, and it is driven by the voltage change of the blinking light emitting diode. A high-intensity light-emitting diode blinking device, characterized in that a high-intensity light-emitting diode is caused to blink by operating the unit.