JPH06242733A - Led lamp for alternating-current lighting - Google Patents

Abstract

PURPOSE:To obtain the LED lamp which has small electric power loss and is small in size and usable for the commercial power source. CONSTITUTION:An LED light emission body 1 is fitted to one end of a cylindrical adapter 12 and a ferrule 13 is fixed to the other end. A thyristor 2a, a trigger element 11, and a capacitor 10 are mounted on the top surface of a printed wiring board 14 and on the reverse surface, a hybrid IC mounted with resistances 8 and 9 is put in the cylindrical adapter 12 and ferrule 13. The LED light emission body 1 is connected to the ferrule 13 by lead wires 16 and 16 through the resistance 8 and thyristor 2a. The resistance 9, capacitor 10, and trigger element 11 constitute a trigger circuit which turns on the thyristor 2a in a specific phase of an AC wave.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC lighting LED lamp used as an indicator lamp or the like.

[0002]

2. Description of the Related Art An LED (light emitting diode) is basically a semiconductor driven by a direct current, and when it is turned on by a commercial power source voltage, the commercial power source voltage is set to a low voltage range suitable for an LED light emitter. (Generally, 24 V or less) is stepped down by a transformer or the like and a current value is controlled by a resistor or the like so as to have a circuit configuration suitable for alternating current to be turned on, or converted into direct current to be turned on.

[0003]

DISCLOSURE OF THE INVENTION The conventional LED described above
According to the lamp, the lighting component is larger in volume than the LED light emitter, and the merit that the LED lamp is small is lost, and as a result, the lamp for commercial power supply tends to rely on an incandescent lamp. The reality is.

However, in recent years, as a result of increasing the brightness and reliability of the LED luminous body, there has been a demand from the user for a compact LED lamp that can be lit by a commercial power source.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an AC lighting LED lamp which has a small power loss and can be used as a commercial power source. Is.

[0006]

In order to achieve the above object, an LED lamp according to claim 1 is formed by connecting an LED light emitting body to an AC power source connecting terminal via a switching element, which is a switching element. An electronic control element such as a thyristor or a triac, which is switched on at a predetermined phase of an AC wave of an AC power supply, wherein the LED lamp according to claim 2 is the LED lamp according to claim 1. The LED lamp according to claim 1, wherein a limiter that cuts a current output by switching on the switching element with a predetermined amplitude is interveningly connected to a lighting circuit of the LED light emitter. L
In the ED lamp, a timing circuit for cutting a current output by switching on of the switching element with a predetermined width is interveningly connected to a lighting circuit of an LED light emitter, and the LED lamp according to claim 4, In the LED lamp according to items 1 to 3, a tubular adapter is fixed to a base, an LED light emitting body is attached to an opening of the tubular adapter, and the switching element and other lighting parts are provided in the tubular adapter and the base. It is characterized by being stored.

[0007]

As shown in FIG. 1, the LED light emitter 1 is connected to the AC power supply connection terminal 3 via the switching element 2, and the switching element 2 is switched on by the trigger circuit 4 at a predetermined phase of the AC wave of the AC power supply. According to the LED lamp of claim 1, when the switching element 2 is switched on, a current having a sawtooth waveform, which is suitable for lighting the LED, flows through the LED light-emitting body 1 as indicated by the diagonal lines in FIG. .

As shown in FIG. 3, L for connecting the LED light emitter 1 to the AC power supply connection terminal 3 via the switching element 2
According to the LED lamp of claim 2, wherein the limiter 6 is connected to the lighting circuit 5 of the ED light emitting body 1, the sawtooth current flowing by switching on the switching element 2 in a predetermined phase is as shown in FIG. The limiter 5 cuts with a predetermined amplitude M, and this current flows through the LED light emitter 1. This circuit is suitable for a large-capacity LED lamp and is not easily affected by noise contained in the AC power supply.

As shown in FIG. 5, a current output by switching on the switching element 2 to the lighting circuit 5 of the LED light emitting element 1 which connects the LED light emitting element 1 to the AC power supply connection terminal 3 via the switching element 2. According to the LED lamp of claim 3, in which the timing circuit 7 for cutting the LED with a predetermined width is interveningly connected, the LED lamp is suitable for lighting the LED, as shown in FIG. A pulsed current flows. This circuit is suitable for an LED lamp that increases brightness by increasing the amplitude while suppressing heat generation.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 7 shows an example of the circuit of the LED lamp according to the first aspect.

In the figure, 2a is a thyristor as a switching element, which is a current limiting resistor 8 and an LED.
The lighting circuit 5 is connected to the AC power supply connection terminal 3 connected to the commercial power supply of 100V and 200V through the light emitting body 1. Resistor 9, capacitor 10 and trigger element 11
Constitutes a trigger circuit 4 for switching on the thyristor 2a with an AC wave at a predetermined phase.

In the LED lamp according to the second aspect shown in FIG. 3, a constant voltage diode is used as the limiter 6.

In the LED lamp according to the third aspect shown in FIG. 5, the timing circuit 7 is a well-known circuit which is turned on by a trigger signal output from the trigger circuit 4 and turned off after a predetermined time.

8 and 9 are an exploded view and an assembly view of the LED lamp shown in FIG.

In the figure, the LED light emitter 1 is attached to one end of a cylindrical adapter 12, and the other end of the adapter 12 is fixed to an E10 base 13 defined by JIS, for example. The thyristor 2a, the trigger element 11, and the capacitor 10 are mounted on the front surface of the printed wiring board 14, and the resistors 8 and 9 are mounted on the back surface of the hybrid IC.
And is housed inside the adapter 12 and the base 13. The terminal 15 of the LED light emitter 1 is the printed wiring board 14
The lead wires 16 and 16 connected to the terminals (not shown) on the back surface of the other end are connected to the other terminals.
And to the shell 18. The eyelet 17 and the shell 18 correspond to the AC power supply connection terminal 3 in FIG. 7.

Although the thyristor 2a is used as the switching element 2 in the above embodiment, a triac can be used, and the hybrid IC is a semiconductor I.
It is also possible to use C as the semiconductor IC
It can be mounted on a printed wiring board together with a chip, and can be entirely molded with resin.

[0018]

The invention according to claim 1 has an effect that it is possible to obtain an LED lamp which has a small power loss and is small in size and can be used as a commercial power source.

The invention described in claim 2 has an effect that the effect of the invention described in claim 1 can be obtained and the influence of noise contained in the AC power supply can be removed.

The invention according to claim 3 has the effect that the effect of the invention according to claim 1 can be obtained, and the brightness can be increased while suppressing heat generation.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of the invention according to claim 1.

2 is a diagram showing a waveform of a current flowing through the circuit shown in FIG.

FIG. 3 is a block diagram showing the configuration of the invention described in claim 2.

FIG. 4 is a diagram showing a waveform of a current flowing through the circuit shown in FIG.

FIG. 5 is a block diagram showing the configuration of the invention described in claim 3.

6 is a diagram showing waveforms of radio waves flowing through the circuit shown in FIG.

FIG. 7 is a circuit diagram of an embodiment of the invention described in claim 1.

FIG. 8 is an exploded view of the embodiment shown in FIG.

FIG. 9 is a front view showing the embodiment shown in FIG. 7 in a partial cross section.

[Explanation of symbols]

1 LED luminous body 2 Switching element 2a Thyristor 3 AC power supply connection terminal 5 Lighting circuit 6 Limiter 7 Timing circuit 12 Cylindrical adapter 13 Base

Claims (4)

[Claims] 1. An LED light emitter is connected to an AC power supply connection terminal via a switching element, and the switching element is an electronic control element such as a thyristor or a triac, and is switched at a predetermined phase of an AC wave of the AC power supply. An AC lighting LED lamp that is characterized by being turned on. 2. The LED lamp for AC lighting according to claim 1, wherein a limiter for cutting a current output by switching on the switching element with a predetermined amplitude is interveningly connected to a lighting circuit of the LED light emitter. . 3. The switching of the switching element
The LED lamp for AC lighting according to claim 1, wherein a timing circuit for cutting off a current output by turning on the switch in a predetermined width is interveningly connected to a lighting circuit of the LED light emitter. 4. A tubular adapter is fixed to a base, an LED light emitting body is attached to an opening of the tubular adapter, and the switching element and other lighting parts are housed in the tubular adapter and the base. The LED lamp for AC lighting according to claim 1.