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Lighting device and lamp

A lighting device and transparent technology, applied in the field of lighting, can solve problems such as limited conversion efficiency of excitation light and waste of light energy, and achieve the effects of improving heat dissipation efficiency, avoiding heat accumulation, and improving use efficiency

Pending Publication Date: 2020-11-24
SHANGHAI BLUE LAKE LIGHTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the conversion efficiency of the fluorescent material per unit area to the excitation light is limited. After the fluorescent material reaches thermal saturation, increasing the excitation light unilaterally will cause a waste of light energy.

Method used

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  • Lighting device and lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the prior art, the method of using LED chips to excite fluorescent materials to emit excited light has been widely used in the lighting industry, but the light intensity obtained by using this method still does not meet people's needs for high-brightness light sources; therefore, Someone proposed to use two light sources to irradiate the same fluorescent material at the same time to obtain higher brightness outgoing light. However, the conversion ability of the fluorescent material per unit area to the excitation light is limited, which makes the thermal saturation of the fluorescent material occur when two light sources illuminate the same fluorescent material, resulting in most of the excitation light not being converted into excited light and directly This directly causes a waste of light energy and also poses a safety hazard. So, if figure 1 As shown, this patent provides a new method that allows us to obtain high-brightness light while reducing the potential sa...

Embodiment 2

[0037] Such as figure 2 As shown, in this embodiment, the difference from Embodiment 1 is that the fluorescent sheet 214 can also choose to use fluorescent ceramics to convert the excitation light from the second light source. Fluorescent ceramics have higher absorption coefficient and refractive index than traditional phosphors, and they have good transparency, high hardness, corrosion resistance, high temperature resistance, simple manufacturing process, low production cost, can be mass-produced, and the doping concentration is easy control. Fluorescent ceramics are equivalent to realizing the functions of fluorescent materials and transparent heat-conducting substrates at the same time, and also avoid the problem that part of the outgoing light will be lost due to total reflection when light exits from the fluorescent sheet.

Embodiment 3

[0039] Such as image 3 As shown, since the lighting device can be used as a lamp, such as car lights, search lights or special lighting fields, etc., these fields often require an outgoing light with a small divergence angle, so a reflector 303 is also included, and the reflector 303 The mixed light 323 is reflected and emitted to the outside. After the mixed light 323 emitted from the illuminating device reaches the reflective cup 303, it is reflected by the reflective cup 303, and the angle of the mixed light 323 is adjusted before being emitted, finally obtaining a collimated outgoing light beam. In order to make the outgoing light effect better, a preferred implementation is that the lighting device needs to be set at the focal point of the reflective cup 303, so that the reflective cup 303 can receive more mixed light 323 and reflect them out. , so that the brightness of the outgoing light is further enhanced.

[0040] In this embodiment, the position of the second lig...

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Abstract

The invention discloses a lighting device and a lamp. A first light source comprises an LED chip and a first fluorescent material layer coating the LED chip, and light emitted by the LED chip excitesthe first fluorescent material layer to emit first emergent light; a fluorescent sheet abuts against the first fluorescent material layer is also comprised, the fluorescent sheet transmits first emergent light, and an air gap is formed between the fluorescent sheet and the first fluorescent material layer; light emitted by the second light source excites the fluorescent sheet to emit second emergent light, and the first emergent light transmitted from the fluorescent sheet and the second emergent light are mixed to form mixed light to be emitted; a heat conduction block is also comprised, andthe fluorescent piece is fixed to the heat conduction block which is used for conducting heat generated by the fluorescent piece. The lighting device has the beneficial effects that light emitted by the light source is fully utilized, so that the lighting device can emit light with higher brightness; according to the invention, the heat dissipation device in the light source is improved, so that the heat generated by each element in the lighting device can be conducted to the outside at the maximum efficiency.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a lighting device and a lamp. Background technique [0002] Since the beginning of the new century, people's demand for high-brightness light has become increasingly strong. However, due to the problems of large volume and high energy consumption of traditional tungsten lamps and xenon lamps, people are looking for a low energy consumption, small size and long service life. new light source. [0003] In order to solve the above problems, LED light sources have been widely used by people. Among them, white light LED is highly praised by people. The way white LEDs emit light can be divided into two types: monocrystalline and polycrystalline, mainly according to the number of LED light-emitting diodes used. Polymorphism, that is, using two or more complementary two-color LED light-emitting diodes or mixing three primary-color LED light-emitting diodes to form white light. The m...

Claims

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Application Information

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IPC IPC(8): F21K9/20F21V9/32F21V19/00F21V7/04F21V29/503F21V29/70F21Y115/10
CPCF21V7/04F21V19/001F21V29/503F21V29/70F21K9/20F21Y2115/10F21V9/32
Inventor 杨毅
Owner SHANGHAI BLUE LAKE LIGHTING TECH CO LTD
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