LED low-voltage lamp bulb

Abstract

The invention discloses an LED low-voltage lamp bulb. The LED low-voltage lamp bulb comprises a lamp holder (1) and a lamp body (2), wherein an LED lighting slab (3) is mounted at the upper part of the lamp body (2) in a position close to the lamp holder (1); a DC constant-voltage power supply appliance (6) is arranged between the LED lighting slab (3) and the lamp holder (1); the incoming line of the DC constant-voltage power supply appliance (6) is connected with the lamp holder (1); the outgoing line of the DC constant-voltage power supply appliance (6) is connected with the LED lighting slab (3); when the LED low-voltage lamp bulb works, the lamp holder (1) is connected to a low DC safe voltage of 6 V, 12V, 24 V or 36 V; a concave lens (4) is fixed on the lamp body (2) in a position below the LED lighting slab (3); a spherical crown-shaped frosted lamp shade (5) is fixedly mounted on the lamp body (2) in a position below the concave lens (4); the area of each radiating window in the lamp body (2) is equal to or larger than that of the part, closed by the lamp body (2), of each support bar (8). As the back of the LED low-voltage lamp bulb provided by the invention is in dark color, heat radiation is enhanced; an aluminum radiator is eliminated, which lowers the cost. The LED low-voltage lamp bulb adopts a low safe voltage for power supply, has a good illuminating effect, and is low in manufacturing cost, and easy to popularize.

Description

technical field [0001] The present invention relates to an LED low-voltage light bulb. Background technique [0002] Although the existing LED lighting bulbs on the market have the advantages of high efficiency, energy saving, environmental protection and longevity, they are all AC 220V (110V in some countries) directly connected to the lamp holder, and then converted to the light-emitting board by a constant current power supply. Safety regulations It is determined that the heat dissipation window of the lamp body is small and the effect is poor, so an aluminum heat sink has to be used, but the cost is high. In addition, the optical characteristics of the narrow-angle beam of the emitted light from the LED lead to poor lighting effect, which increases the difficulty of LED lighting promotion. Contents of the invention [0003] The object of the present invention is to provide a low-voltage LED light bulb that is powered by a low-voltage direct current safety voltage, has ...

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Problems solved by technology

[0002] Although the existing LED lighting bulbs on the market have the advantages of high efficiency, energy saving, environmental protection and longevity, they are all AC 220V (110V in some countries) directly connected to the lamp holder, and then converted to the light-emitting board by a constant current power supply. Safety regulations It is determined that the heat dissipation window of the lamp body is small and the effect is poor, so an aluminum heat sink has to be used, but the cost is high. In addition, the optical characteristics of the narrow-angle beam of the emitted light from the LED lead to poor lighting effect, which increases the difficulty of LED lighting promotion.

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