CN201180948Y - A kind of energy-saving lamp - Google Patents

Abstract

The utility model discloses an energy-saving lamp which comprises a lamp holder, a lampshade connected with the lamp holder and a plurality of lighting diodes arranged in the lampshade and connected with the lamp holder. A power adapter is arranged on the lamp holder; the power adapter is electrically connected with the lighting diodes; the power adapter comprises an adjustable three-terminal regulator which adopts an LM317 chip. The energy saving lamp adopting the structure has the advantages of simple structure, low cost, long service life, and high electro-optical efficiency. The energy saving lamp is an ideal substitute for the prior lamps.

Description

A kind of energy-saving lamp

technical field

The utility model relates to a lamp, in particular to an energy-saving lamp with high energy-saving efficiency.

Background technique

At present, incandescent lamps, fluorescent lamps and rare earth three primary color fluorescent lamps are the main lamps for living lighting. The usable area of a general resident's room is about ten square meters. If the lighting brightness requirements are met, if an incandescent lamp is used, its power should be about 60W; if a fluorescent lamp is used, its power should be about 40W; if a rare earth lamp is used The power of tri-color fluorescent lamps should be more than 20W to meet the requirements. The disadvantages are: 1. The incandescent lamp has poor electro-optical conversion efficiency and does not save electricity; 2. The fluorescent lamp has power-saving effect, but its life is short; Tricolor fluorescent lamps have high efficiency, but are expensive and have a limited lifespan. In today's increasingly tense energy environment, it is very important to develop a high-efficiency energy-saving lamp.

Utility model content

The technical problem to be solved by the utility model is to provide an energy-saving lamp with high electro-optic conversion efficiency, low operating cost and long service life in view of the above shortcomings.

In order to solve the above-mentioned technical problems, the energy-saving lamp includes a lamp holder and a lampshade connected to the lamp holder. The power converter is electrically connected with the light emitting diode.

The power converter converts the 220V AC mains power into a DC voltage suitable for the power supply requirements of the LEDs. The DC voltage is applied to both ends of the LEDs to supply power to the LEDs, and the LEDs can emit dazzling light; the more the LEDs, the more The higher the brightness, the higher the power consumption; because the light-emitting diode is used as the electro-optic conversion element, the electro-optic conversion efficiency is high, and the energy-saving effect is obvious. A 5W energy-saving lamp is equivalent to the brightness of a 40W fluorescent lamp, which is higher than that of a 40W fluorescent lamp. At present, about 78% of rare earth tricolor fluorescent lamps can be saved, which can save a lot of electricity for the country. Using light-emitting diodes as light-emitting elements has a long service life of more than 50,000 hours; the cost of a light-emitting diode is about a few cents or even a few cents, which is much more cost-effective than fluorescent lamps and rare earth tricolor fluorescent lamps.

As an improvement, in order to make the output voltage of the power converter stable and adjustable, the power converter uses a three-terminal adjustable voltage regulator, and the three-terminal adjustable voltage regulator uses an LM317 chip. When it is necessary to increase the power supply voltage of the LED, the adjustment resistor of the LM317 can be adjusted to increase the output voltage of the LM317 appropriately, or when the number of LEDs increases, the output voltage of the LM317 also needs to be increased, otherwise, the output voltage of the LM317 Voltage turned down.

To sum up, the energy-saving lamp with this structure has low cost, long life, and high electro-optical conversion efficiency. It is an ideal substitute product for current lighting fixtures and can be called a green and environmentally friendly electric light source.

Description of drawings

The utility model is described in further detail in conjunction with accompanying drawing:

Fig. 1 is a structural schematic diagram of an energy-saving lamp;

Fig. 2 is A-A sectional view of Fig. 1;

Figure 3 is an electrical schematic diagram of an energy-saving lamp.

In the figure: 1 is the lamp holder, 2 is the lampshade, 3 is the light-emitting diode, 4 is the power converter, F is the fuse, T is the transformer, Q is the rectifier bridge, C1 and C2 are the filter capacitors, IC is the three-terminal adjustable stabilizer Voltage regulator, R1 is a voltage divider resistor, R2 is a variable resistor.

Detailed ways

As shown in Figure 1 and Figure 2, this energy-saving lamp includes a lamp holder 1, a lampshade 2 connected to the lamp holder 1, and 108 light-emitting diodes 3 connected to the lamp holder 1 are arranged in the lamp shade 2, and the lamp holder 1 There is a groove in the middle, and a power converter 4 is arranged in the groove, and the power converter 4 is electrically connected to the light emitting diode 3, and the light emitting diode 3 is connected to an AC power source through the power converter 4. The power converter 4 includes a three-terminal adjustable voltage regulator IC, and the three-terminal adjustable voltage regulator IC adopts an LM317 chip.

Specifically, the power converter 4 includes a transformer T, the voltage input terminal of the transformer T is connected to the mains 180-260V through the fuse F, the voltage output terminal of the transformer T outputs an AC voltage of about 14V, and the output terminal of the transformer T It is electrically connected to the input terminal of the rectifier bridge Q, and the output terminal of the rectifier bridge Q outputs a pulsating DC voltage of about 19V, and then a relatively stable DC voltage is obtained after filtering by the filter capacitor C1; the positive pole of the DC voltage and the three-terminal adjustable voltage regulator The voltage input terminal of the three-terminal adjustable voltage regulator IC is electrically connected, and the controllable end of the three-terminal adjustable voltage regulator IC is electrically connected to the negative pole of the DC power supply through the variable resistor R2. The piezoresistor R1 is electrically connected to the output end of the three-terminal adjustable voltage regulator IC; the output voltage of the DC power supply after passing through the three-terminal adjustable voltage stabilizer IC is more stable, and the output end of the three-terminal adjustable voltage stabilizer IC is connected to the light-emitting diode The positive pole of the DC power supply is electrically connected to the negative pole of the light-emitting diode. In this embodiment, the light-emitting element is an LED array. By adjusting the resistance value of the variable resistor R2, the three-terminal adjustable voltage regulator IC can be changed. output voltage value, thereby changing the brightness or quantity of the light-emitting diode 3; as an improvement, in order to obtain a more stable output voltage value, a filter capacitor is connected in parallel between the output terminal of the three-terminal adjustable voltage regulator IC and the negative pole of the DC power supply C2, as shown in Figure 3.

In the above embodiment, the specifications of the fuse F are (1/8)W, 0.2Ω, the specifications of the transformer T are BW220/14V, the specifications of the rectifier bridge Q are 1A100V, and the specifications of the filter capacitor C1 are 35V/1000μF electrolytic capacitors, The three-terminal adjustable voltage regulator IC adopts LM317 chip, the specification of variable resistor R2 is 5KΩ, the specification of voltage dividing resistor R1 is (1/8)W, 250Ω, the specification of filter capacitor C2 is 16V/220μF electrolytic capacitor, LED The specifications of the array are Φ5, 3.2V, 20mA, R534W202CA light-emitting tube square array. In the above embodiments, the light emitting diode 3 is an LED array, and multiple light emitting diodes can also be used to meet different illumination requirements, or be designed as lighting fixtures of various styles.

Claims (2)

1. An energy-saving lamp, comprising a lamp holder (1), and a lampshade (2) connected to the lamp holder (1), characterized in that: inside the lampshade (2), there are multiple lights mounted on the lamp holder (1). a light emitting diode (3), and a power converter (4) is also arranged on the lamp holder (1), and the power converter (4) is electrically connected with the light emitting diode (3). 2. The energy-saving lamp according to claim 1, characterized in that: the power converter (4) includes a three-terminal adjustable voltage regulator (IC), and the three-terminal adjustable voltage regulator (IC) adopts an LM317 chip.

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