A high-power led light

Abstract

The invention discloses a high-power LED lamp without a metal radiator. The high-power LED lamp comprises at least one LED lamp tube, wherein each lamp tube is provided with a light-transmitting bulb housing; at least one LED light-emitting strip is mounted in each bulb housing; each light-emitting strip is provided with a metal radiating fin and comprises a metal substrate, at least one metal radiating fin integrated with the metal substrate, a light reflection layer arranged on the metal substrate, at least one string of LED chips and transparent medium layers or light-emitting powder layers applied to the LED chips; at least one electrical lead wire of the LED light-emitting strip is connected with the output of a driver, and the input of the driver is connected with an electrical connector; the electrical connector is connected with an external power supply, and the light-emitting strips and the lamp are turned on after the external power supply is connected. According to the high-power LED lamp, heat generated during operation of LEDs is easily dissipated through the metal substrate and the radiating fins, the radiating effect is good, the power of the light-emitting strips, the working current of the chips and the output light flux can be increased, the light-emitting efficiency can be improved, the process is simplified, and the cost is reduced; incandescent lamps, fluorescent lamps, metal halogen lamps and high-voltage sodium lamps are replaced.

Description

technical field [0001] The invention relates to an LED lamp, in particular to a high-power LED lamp, which can replace incandescent lamps, fluorescent energy-saving lamps, metal halide lamps and high-pressure sodium lamps, and is used for lighting. Background technique [0002] The LED light strips of the LED light strip (or LED filament) lamps in the prior art are all composed of a transparent or opaque substrate and at least a string of LED chips and their luminescent powder layer. The substrate is a glass substrate, a quartz glass substrate, Sapphire substrate, AlN ceramic substrate, alumina ceramic substrate or metal substrate; at least one string of LED chips is installed on one or both sides of the substrate, and the LED chips are connected in series or in parallel, and the electrodes of the LED chips are connected by electrodes located at one or two ends of the substrate. The lead-out line leads out. When the LED light-emitting strip is working, the heat generated by...

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Problems solved by technology

[0003] However, the heat dissipation area of ​​the above-mentioned luminous strip is small, and the thermal resistance from the LED chip to the heat dissipation gas is relatively large, so it is not easy to manufacture a high-power lamp with an output luminous flux greater than 1000lm

[0004] In addition, in order to improve the photoelectric performance of the LED lighting strip, a sapphire substrate can be used. Sapphire has a high thermal conductivity of about 35-46 W / m·K and a high light transmittance. The photoelectric performance of the lighting strip is better, but the cost is high.

[0005] At the same time, in order to improve the heat dissipation effect of the luminous strip and increase the output luminous flux of the lamp, the luminous strip with a sapphire substrate can be pasted on a transparent ceramic tube. The transparent ceramic tube has a high thermal conductivity of about 25W / (m·K). High efficiency and large heat dissipation area, so that the output luminous flux of the lamp can be improved, and a high-power LED lighting lamp with an output luminous flux of up to 1600lm or higher can be made, such as Chinese patent CN203023841; but the cost of sapphire and transparent ceramic tubes is relatively high

[0006] In addition, the manufacturing process of the above-mentioned various light-emitting strips is relatively complicated and the cost is high; for example, when using sapphire and transparent ceramic tubes, it is necessary to paste the sapphire strip on the metal support for solid crystal and wire bonding of the LED chip, and then solid crystal, Make wires, apply luminous powder glue, and make luminous strips, and then use luminescent powder glue to paste the luminous strips on the transparent ceramic tubes with conductive lines in advance, and then weld and fix the transparent ceramic tubes with luminous strips on the light-transmitting Inside the bulb, there are many processes, the process is more complicated, and the cost is higher

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