CN201892056U - Dimming illumination lamp - Google Patents

Abstract

The utility model discloses a gradually brightening and dimming lighting lamp, which comprises a lighting lamp EL and a switch S, and the lighting lamp EL and the switch S are connected in series with 220V mains, and is characterized in that it also includes a gradually brightening and darkening circuit , the described fading circuit includes bidirectional thyristor VT1, thyristor VT2, Zener diode VS, diodes VD1, VD2, resistors R1-R3, capacitor C and switch S, which has the effect of fading light and dimming of lamps, thus It avoids damage to human eyes when it is turned on and on, and turns off when it is turned off, so that the lamp is more in line with the requirements of humanization; at the same time, the gradual brightening and dimming lamp can also avoid the damage of the impact of strong current on the lamp caused by repeated switching. Compared with ordinary lamps It has the advantages of longer life and safety.

Description

Fade-in Fade-in Lights

technical field

The utility model relates to an illuminating device, in particular to a gradually brightening and dimming illuminating lamp which has the effect of gradually brightening and dimming when it is turned on and off.

Background technique

Today, bedroom lamps are emerging in an endless stream. In order to enable users to obtain more comfortable and soft lighting, businesses have launched "soft lights" and "comfortable lights". Regardless of whether the soft light or the ordinary fluorescent lamp or incandescent lamp reaches the maximum brightness when the switch is pressed, it goes out instantly when the switch is turned off. These instant-on and off-off lamps in the living room have the following outstanding disadvantages: 1. Every time the lamp is turned on, a strong current repeatedly impacts the lamp, reducing the service life of the lamp and reducing its safety. 2. Although low-brightness lamps such as soft lights can reduce the stimulation of light to glasses, their brightness is not high and damage human vision; ordinary fluorescent lamps are full of brightness, but they are very dazzling when they are turned on, which is not good for human eye health. 3. Immediate extinguishment of lamps will make it difficult for human eyes to adapt to the sudden dark environment, and even cause dizziness. To solve the above problems, a delay circuit can be inserted into the ordinary household bedroom lamps to make the lamps light up slowly and turn off slowly.

Contents of the invention

In order to solve the deficiencies in the prior art, the utility model provides a gradually brightening and dimming lighting lamp, which realizes the effect of gradually brightening and dimming the lamp, so as to avoid damage to human eyes when it is turned on and off, and makes the lamp It is more in line with the requirements of humanization; at the same time, the gradually brightening and dimming lamp can also avoid the damage caused by the strong current impact on the lamp caused by repeated switching, and has a longer life and safety than ordinary lamps.

The technical problem to be solved by the utility model is achieved through the following technical solutions. The gradually brightening and dimming lighting lamps include the lighting lamp EL and the switch S. The lighting lamp EL and the switch S are connected in series to the 220V mains. In that: it also includes a fade-in and fade-out circuit, and the fade-in and fade-out circuit includes a bidirectional thyristor VT1, a thyristor VT2, a Zener diode VS, a diode VD1, VD2, resistors R1-R3, a capacitor C and a switch S, each The connection relationship of the components is that the anode of the bidirectional thyristor VT1, the anode of the diode VD2, and the negative pole of the Zener diode VS are all connected to the negative pole of the commercial power, and the gate of the described bidirectional thyristor VT1 is connected to the positive pole of the Zener diode VS. connected, the negative pole of the bidirectional thyristor VT1 is connected in series with the positive pole of the Zener diode VS after being connected in series with the resistor R1, the negative pole of the described bidirectional thyristor VT1 is also connected with the positive pole of the diode VD1 and the negative pole of the thyristor VT2, and the diode The negative electrode of VD1 is connected in series with the switch S connected with the positive electrode of the thyristor VT2, and then connected in series with the illuminating lamp EL and then connected to the positive electrode of the mains. The negative electrode of the diode VD2 is connected in series with the resistors R2 and R3 in sequence and then connected to the gate electrode of the thyristor VT2. A capacitor C is connected between the intermediate junction of the resistors R2 and R3 and the junctions of the negative pole of the bidirectional thyristor VT1, the negative pole of the thyristor VT2, and the positive pole of the diode VD1.

Normally, the switch S is in the off state, VT2 is off, and VT2 is not conducting: when the switch S is just turned on, VT2 is off, VD1 and VT1 are on, and EL is about 110V due to the operating voltage drop (VD1 conducts in the negative half cycle of the alternating current. C is charged through R2 and VD2, and after a certain period of time (when the voltage at both ends of C is charged to a certain value), VT2 is triggered and turned on (current flows only in the positive half cycle of the AC >, EL works at full voltage and emits light normally.

When the switch S is turned off, C discharges the gate of VT2 through R3, so that VT2 remains on, but because VD1 has been disconnected by S, the working voltage of EL drops to about 110V, and its luminous brightness is halved. As the voltage across C drops continuously, the conduction angle of VT2 becomes smaller and smaller, the working voltage of EL also drops gradually, and the light gradually dims. After a certain time delay, VT2 ends and EL goes out.

Changing the capacitance of C can change the delay time of turning on and off the lights.

The utility model has the advantages of: the effect of gradually brightening and dimming the lamps, so as to avoid damage to human eyes when they are turned on and off, and make the lamps more in line with the requirements of humanization; It avoids damage caused by repeated switching and strong current impact on the lamps, and has a longer life and safety than ordinary lamps.

Description of drawings

Fig. 1 is the circuit diagram of the gradually brightening and dimming illuminating lamp of the utility model.

Detailed ways

A gradually brightening and dimming illuminating lamp, as shown in Figure 1, includes an illuminating lamp EL and a switch S, and the described illuminating lamp EL and switch S are connected in series with 220V mains, and it is characterized in that: it also includes a gradually brightening and dimming circuit, the described fading circuit includes bidirectional thyristor VT1, thyristor VT2, Zener diode VS, diodes VD1, VD2, resistors R1-R3, capacitor C and switch S, and the connection relationship of each component is as follows: The positive pole of the two-way thyristor VT1, the positive pole of the diode VD2, and the negative pole of the Zener diode VS are all connected to the negative pole of the mains, the gate of the two-way thyristor VT1 is connected to the positive pole of the Zener diode VS, and the two-way thyristor VT1 After the negative pole is connected in series with the resistor R1, it is also connected to the positive pole of the Zener diode VS. The negative pole of the bidirectional thyristor VT1 is also connected to the positive pole of the diode VD1 and the negative pole of the thyristor VT2. The negative pole of the diode VD1 is connected in series with the switch S and the thyristor. The anode of VT2 is connected to the positive pole of the lighting lamp EL and then connected to the positive pole of the mains. The negative pole of the diode VD2 is connected to the gate of the thyristor VT2 in series with the resistors R2 and R3 in series. The middle of the resistors R2 and R3 A capacitor C is connected between the contact point and the negative electrode of the triac VT1 , the negative electrode of the thyristor VT2 , and the positive electrode of the diode VD1 .

Obviously, those of ordinary skill in the art can also make various forms without departing from the basic technical idea of the present utility model according to the technical knowledge and conventional means they have mastered, and all the changes in these forms are included in the present utility model. within the scope of protection.

Claims (1)

1. bright-dark illuminating lamp, comprise illuminating lamp EL, switch S, described illuminating lamp EL, switch S is serially connected with the 220V civil power, it is characterized in that: it also comprises the bright-dark circuit, described bright-dark circuit comprises bidirectional thyristor VT1, IGCT VT2, Zener diode VS, diode VD1, VD2, resistor R 1-R3, capacitor C and switch S, the annexation of each components and parts is, the positive pole of described bidirectional thyristor VT1, the positive pole of diode VD2, the negative pole of Zener diode VS all is connected in the civil power negative pole, the gate pole of described bidirectional thyristor VT1 is connected with the positive pole of Zener diode VS, also be connected after 1 series connection of the negative pole of described bidirectional thyristor VT1 and resistor R with the positive pole of Zener diode VS, the negative pole of described bidirectional thyristor VT1 also with diode VD1 positive pole, the negative pole of IGCT VT2 connects, be connected to the civil power positive pole after being connected in series illuminating lamp EL again after the negative pole of described diode VD1 is connected in series switch S and the positive pole of IGCT VT2 is connected, the negative pole of described diode VD2 is resistors in series R2 successively, gate pole with IGCT VT2 behind the R3 is connected, described resistor R 2, the negative pole of R3 intermediate contact and bidirectional thyristor VT1, the negative pole of IGCT VT2, be connected with capacitor C between the anodal three's of diode VD1 the contact.

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