CN201149207Y - LED energy-saving lighting - Google Patents

Abstract

A kind of LED energy-saving illuminating lamp, there is a reflective plate with a plurality of holes in a housing, a circuit board is installed behind the reflective plate, and the positions corresponding to the holes on the reflective plate are equipped with the same number of LED light-emitting tubes and mounted on the circuit board. On the other side of the step-down circuit, the head of the LED light-emitting tube protrudes from the hole of the reflector, the mouth of the housing has a transparent protective cover, and the tail has electrical connection parts; the step-down circuit is composed of capacitors and resistors connected in parallel, and the LED emits light The tubes with the same polarity are connected in series and parallel to form a string of luminous tubes, and the two strings of luminous tubes are connected in parallel with opposite polarities and then connected in series with the step-down circuit. The utility model LED energy-saving lighting lamp adopts dozens or even hundreds of light-emitting tubes connected in series and parallel to form a full-bridge circuit, which is connected in series with a capacitor step-down circuit and directly powered by 220V AC, realizing the daily lighting use of LED light-emitting tubes. The utility model has the advantages of simple structure, low cost, high luminous rate, strong and durable, and easy to popularize.

Description

LED energy-saving lighting

technical field

The utility model relates to a lighting lamp, in particular to a long-life and energy-saving LED energy-saving lighting lamp.

Background technique

Lighting lamps are daily necessities. The current civilian lighting lamps mainly include incandescent lamps, fluorescent lamps and energy-saving fluorescent lamps. Incandescent lamps have low luminous efficiency, fluorescent lamps flicker, and energy-saving fluorescent lamps are expensive and have a short lifespan. Society's requirements for energy-saving lamps have not yet been ideally resolved.

Utility model content

In order to make up for the above shortcomings, the utility model provides a long-life energy-saving lighting lamp using a white light-emitting tube.

The utility model LED energy-saving lighting lamp comprises a housing and an LED luminous tube, wherein: a reflector with a plurality of holes is arranged in the housing, and a circuit board is installed behind the reflector, and the circuit board is connected with the The position corresponding to the hole on the reflector is equipped with the same number of LED light-emitting tubes and a step-down circuit on the other side. The head of the LED light-emitting tube partially protrudes from the hole of the reflector, and the housing mouth There is a transparent protective cover at the top, and there are electrical connection parts at the tail.

The utility model LED energy-saving lighting lamp, wherein: the step-down circuit is composed of capacitors and resistors connected in parallel, the LED light-emitting tubes are connected in series and parallel with the same polarity to form a light-emitting tube string, and the two light-emitting tube strings are connected in parallel with the opposite polarity to the described Step-down circuits are connected in series.

The LED energy-saving lighting lamp of the utility model, wherein: a piezoresistor is connected in series and parallel with the light-emitting tubes connected in parallel.

The LED energy-saving lighting lamp of the utility model, wherein: the housing is in an inverted cone shape, and the electrical connection part is a screw lamp cap.

The LED energy-saving lighting lamp of the utility model, wherein: the housing can also be in the shape of a cylinder, the transparent protective cover can be in the shape of a pot, and the electrical connection parts can be double connecting wires.

The utility model LED energy-saving lighting lamp adopts dozens or even hundreds of light-emitting tubes connected in series and parallel to form a full-bridge circuit, which is connected in series with a capacitor step-down circuit and directly powered by 220V AC, realizing the daily lighting use of LED light-emitting tubes. The utility model has the advantages of simple structure, low cost, high luminous rate, strong and durable, and easy to popularize.

Description of drawings

Fig. 1 is the structural representation of LED energy-saving illuminating lamp of the present utility model;

Fig. 2 is a schematic diagram of looking up of the utility model LED energy-saving lighting lamp;

Fig. 3 is a structural schematic diagram of another scheme of the LED energy-saving lighting lamp of the present invention;

Fig. 4 is a schematic bottom view of another scheme of the LED energy-saving lighting lamp of the present invention;

Fig. 5 is a schematic circuit diagram of the LED energy-saving lighting lamp of the present invention.

Detailed ways

In order to further elaborate the LED energy-saving lighting lamp of the present utility model, a more detailed description will be given below in conjunction with the embodiments.

LED is a high-efficiency light-emitting device, and the color temperature of the light emitted by its white tube is very close to that of sunlight. But a single luminous tube can be driven with only a very low voltage, and can only supply direct current.

We generally use 220 AC for lighting and so on. If the scheme of energy-saving fluorescent lamps (complex power conversion circuit) is adopted, it will obviously increase the cost of lighting lamps.

The utility model adopts capacitor step-down and luminescent tubes to be used in series and parallel to realize 220V AC power supply, and is made into a civilian lighting lamp.

Its specific circuit is shown in Figure 5. A number of LED light-emitting tubes 4 are connected in series and parallel with the same polarity to form two light-emitting tube strings 41, 42. Each light-emitting tube string may have only one series of light-emitting tubes, or several series of light-emitting tubes. How much depends on the desired lighting intensity.

The two light-emitting tube strings 41 and 42 are connected in parallel with opposite polarities and connected in series with the step-down circuit 5 composed of a capacitor 43 and a resistor 44 connected in parallel. The size of the capacitor depends on the number of light-emitting tubes, which can be calculated by the capacitive reactance formula of the capacitor. In order to protect the luminous tubes 4, a piezoresistor 45 can be connected in parallel to the luminous tube strings 41 and 42 connected in parallel. Capacitor step-down is the simplest step-down circuit, suitable for non-inductive reactance and non-capacitive reactance circuits, just suitable for light-emitting tubes; the biggest problem with capacitive step-down is that there is high voltage on the line. As a light bulb, it is A separate object can be used as long as the insulation of the lamp body is done, and the insulation of the lamp body is relatively easy to do.

The shape and specific structure of the utility model LED energy-saving lighting lamp can be diversified, and two embodiments are provided here.

One is bulb-shaped, see Fig. 1 and Fig. 2, there is the reflective plate 3 with a plurality of luminous tube holes in the inverted conical shell 1, the inner wall of the inverted conical shell 1 also can be coated with reflective layer, reflective plate 3 A circuit board 2 is adorned at the back, and the position corresponding to the hole on the reflector 3 on the circuit board 2 is equipped with the same number of LED light-emitting tubes 4 and the step-down circuit 5 that is contained on the other side, and the head of the LED light-emitting tubes 4 from the reflector Part in the hole of 3 protrudes, and shell 1 mouth portion has flat plate transparent protective cover 6, and afterbody has screw cap 7. The luminous tube 4 and the step-down circuit 5 are connected by copper foil on the circuit board 2, and there are two AC connection terminals on the circuit board 2, which are respectively connected to the shell and the center contact of the isotome 7. This form can directly replace ordinary incandescent lamps.

The second is a dome light type, see Fig. 3 and Fig. 4, the profile is flat, in a cylindrical housing 1 there is a reflector 3 with some luminous tube holes, a circuit board 2 is adorned behind the reflector 3, and the circuit board 2 The position corresponding to the hole on the reflector 3 is equipped with the same number of LED light-emitting tubes 4 and the step-down circuit 5 on the other side. The head of the LED light-emitting tube 4 partially protrudes from the hole in the reflector 3, and the housing 1. There is a bowl-shaped transparent protective cover 6 at the mouth, and a cover plate 8 is arranged at the rear. The luminescent tube 4 and the step-down circuit 5 are connected by copper foil on the circuit board 2, and there are two AC connection terminals on the circuit board 2, and two wires are respectively reserved for connecting the power supply. This form can be installed on the wall to replace fluorescent lamps, and can be made to have a larger luminous area.

Claims (5)

1, a kind of LED energy-saving lighting lamp; comprise housing (1) and LED luminous tube; it is characterized in that: the reflector (3) with some holes is arranged in described housing (1); described reflector (3) back dress-wiring board (2); described wiring board (2) is gone up the reduction voltage circuit (5) that the position corresponding with the hole on the described reflector (3) is equipped with the LED luminous tube (4) of same quantity and is contained in another side; the head of described LED luminous tube (4) part from the hole of described reflector (3) is stretched out; described housing (1) oral area has a transparent protective shield (6), and afterbody has electric connecting part.

2, LED energy-saving lighting lamp according to claim 1, it is characterized in that: described reduction voltage circuit (5) is composed in parallel by electric capacity (43) and resistance (44), luminous tube string (41,42) is formed in described LED luminous tube (4) same polarity connection in series-parallel, connects with described reduction voltage circuit (5) after two luminous tube strings (41,42) reversed polarity parallel connection.

3, LED energy-saving lighting lamp according to claim 2 is characterized in that: with described luminous tube string in parallel (41,42) piezo-resistances in parallel (45).

4, LED energy-saving lighting lamp according to claim 3 is characterized in that: described housing (1) is a back taper, and described electric connecting part is screw holder (7).

5, LED energy-saving lighting lamp according to claim 3 is characterized in that: described housing (1) is a cartridge type, and described transparent protective shield (6) is an alms bowl shape, and described electric connecting part is doubly-linked wiring (7A).

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