Light-emitting diode (LED) lighting device

Abstract

The invention provides a light-emitting diode (LED) lighting circuit. The LED lighting circuit comprises a first lighting module, a second lighting module and a module connecting mechanism, wherein the first lighting module comprises a first light source substrate and a first LED light source arranged on the first light source substrate; the second lighting module comprises a second light source substrate and a second LED light source arranged on the second light source substrate; the first LED light source is opposite to the second LED light source; the module connecting mechanism is connected with the first lighting module and the second lighting module; and the first light source substrate and the second light source substrate are parallel with each other and are not overlapped with each other in the direction parallel with the light source substrates. The LED light circuit has a wide light diverging angle, high luminous flux and high heat-dissipating property.

Description

technical field [0001] The invention relates to an illuminating device, in particular to an illuminating device using LED as a light source. Background technique [0002] Compared with traditional light sources, light-emitting diodes (LEDs) have higher luminous efficiency (the temperature of the light source is lower than ordinary bulbs), low radiation, low power consumption, long life, low voltage, fast startup, environmental protection and pollution-free, shock and pressure resistance, Due to the advantages of miniaturization of lamps, lighting devices using LEDs as light sources are currently widely used in various lighting applications, such as indoor lighting, outdoor lighting, portable lighting (such as flashlights), and situational lighting. However, since LED itself is a point light source and its luminous characteristics have strong directionality, the luminous angle is mostly smaller than that of traditional light sources (such as incandescent lamps, energy-saving ...

AI Technical Summary

Problems solved by technology

Because the effective lighting range of the LED lighting device is much smaller than that of the traditional light source, the application of replacing the traditional light source will not match the characteristics of the light source required by the original lighting design, making the LED lighting device unable to directly replace the traditional light source equivalently

[0003] refer to image 3 As shown, in order to improve the problem of insufficient light divergence angle of the LED lighting device, multiple sets of LED light source substrates 10 can be bonded into a ring-shaped light-emitting module. Although this method can greatly improve the light divergence angle of the LED lighting device, the multi-chip light source The bonding of the substrate 10 will make the electrical connection complicated. In addition, the bonding between the light source substrates 10 will make the heat energy (indicated by the arrow) generated by the LED 11 unable to be effectively and naturally discharged, so this method is mostly used in low luminous flux (low power (low calorific value) ) lighting products, there are also some applications with high-efficiency heat sinks to form LED lighting devices with high luminous flux. However, in the application of high-luminous flux products, it is necessary to join multiple LED light source substrates and high-efficiency heat sinks at the same time, which greatly increases the cost.

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