CN205454161U

CN205454161U - LED (Light -Emitting diode) light engine

Info

Publication number: CN205454161U
Application number: CN201620159702.9U
Authority: CN
Inventors: 戴小琴
Original assignee: SHENZHEN CRESCENT OPTOELECTRONIC CO Ltd
Current assignee: Crescent Optoelectronics (Shenzhen) Limited by Share Ltd
Priority date: 2016-03-03
Filing date: 2016-03-03
Publication date: 2016-08-10
Anticipated expiration: 2026-03-03

Abstract

The utility model provides a LED (Light -Emitting diode) light engine, includes support, light source, drive power supply, light source, drive power supply all locate on the support, the light source is connected with drive circuit, the light source is the LED integrated optical source who adopts the COB encapsulation, the light source includes LED wafer, mirror aluminum substrate, mirror aluminum substrate surface one end is located to the LED wafer, LED wafer surface covering has fluorescent gel, fluorescent gel is equipped with the box dam colloid all around, drive power supply is including using ACDrv2.1 as driver chip's drive circuit, drive circuit locates the mirror aluminum substrate other end to be connected with the LED wafer, mirror aluminum substrate is equipped with screw fixing hole around LED wafer four corners, it is fixed with the support that mirror aluminum substrate passes through screw fixing hole. The utility model discloses a mirror aluminum substrate, reasonable circuit, light source are arranged for the radiating effect is more even, the utility model discloses no EMI disturbs, but this concrete embodiment direct substitution tradition LED projecting lamp, floodlight, and the equipment is convenient.

Description

A kind of LED light engine

Technical field

This utility model relates to LED field, espespecially a kind of LED light engine.

Background technology

At present, in LED, photo engine directly affects its illuminating effect, and therefore, photo engine is also one of most important parts in LED.Photo engine generally comprises heat-dissipating casing, light source, the big major part of driving power supply three.Conventional separated LED drives power supply with irresistible problems: regulated power supply curent change, transformator the big efficiency of weight low, capacitance-resistance power supply immediate current big, efficiency is low, light-out effect is poor.Existing driving power supply and light source are separate type, electric light source matching process difficulty is big, time length and production efficiency is low, Split type electric light source volume is big, occupies greater room.Common driving power circuit design complexity, requires the highest to the characterisitic parameter of each element, slightly deviation result in the biggest capacitive reactance, induction reactance flicker when causing light source switch, frequently switch on and easily puncture electric capacity.Additionally, the output electric current flexibility ratio of common power is low, the most adjustable, with EMI defect, complexity is installed.

Utility model content

For solving the problems referred to above, this utility model provide a kind of easy for installation, cost-effective, disturb without EMI, LED projector lamp engine that light-out effect is good.

nullFor achieving the above object，The technical solution adopted in the utility model is: a kind of LED light engine，Including support、Light source、Drive power supply，Described light source、Power supply is driven all to be located in support，Described light source is connected with drive circuit，Described light source is the LED integrated optical source using COB encapsulation，Described light source includes LED wafer、Mirror-surface aluminum base board，Described LED wafer is located at one end, mirror-surface aluminum base board surface，Described LED wafer surface is coated with fluorescent colloid，Described fluorescent colloid is formed around box dam colloid，Described driving power supply includes the drive circuit with ACDrv2.1 as driving chip，The mirror-surface aluminum base board other end is located at by described drive circuit，And it is connected with LED wafer，Described mirror-surface aluminum base board is rectangle mirror-surface aluminum base board，Described mirror-surface aluminum base board is provided with screw fixing hole around LED wafer corner，Described mirror-surface aluminum base board is screwed hole and fixes with support.

Specifically, described LED wafer is arranged in the mode of rectangle and is located in mirror-surface aluminum base board, and described LED wafer uses EK-EEBLKE11B wafer blue-light LED chip.

Specifically, described drive circuit includes ACDrv2.1 driving chip, first metal-oxide-semiconductor, second metal-oxide-semiconductor, 3rd metal-oxide-semiconductor, 4th metal-oxide-semiconductor, MB6S chip, resistance, electric capacity, described first metal-oxide-semiconductor, second metal-oxide-semiconductor, 3rd metal-oxide-semiconductor, the grid of the 4th metal-oxide-semiconductor respectively with the G1 of ACDrv2.1 driving chip, G2, G3, G4 pin connects, drain electrode is all connected with LED light source negative pole, source electrode passes through resistance R1, R2, R3, R4 is connected with public terminal GND, described MB6S chip external AC power supply, output head anode is connected with LED light source positive pole, and it is connected by the VCC pin of resistance R6 and ACDrv2.1 driving chip, negative pole of output end is connected with public terminal GND.

nullSpecifically，The S1 pin of described ACDrv2.1 driving chip passes through resistance R1、R2、R3、R4 is connected with public terminal GND，S2 pin passes through resistance R2、R3、R4 is connected with public terminal GND，S3 pin passes through resistance R3、R4 is connected with public terminal GND，S4 pin is connected with public terminal GND by resistance R4，VCC pin passes through resistance R6、R9、R10 is connected with public terminal GND，It is connected with public terminal GND also by electric capacity C4，Vsense pin is connected with public terminal GND by resistance R10，PWM pin passes through resistance R8、Electric capacity C5 is connected with public terminal GND，VREFO pin passes through resistance R8、Electric capacity C5 is connected with public terminal GND，VREFI pin is connected with public terminal GND by electric capacity C5.

Specifically, the input of described MB6S chip is in parallel with electric capacity C1, electric capacity C2 the most respectively.

The beneficial effects of the utility model are: this utility model uses the LED integrated optical source of COB encapsulation, light-out effect is more uniform, soft, power supply is driven to use ACDrv2.1 driving chip, eliminate the element such as electrochemical capacitor and transformator, simplify design circuit, and effectively reduce and take up room, there is low cost, small size, stable performance, the advantage of life-span length.Ideal source parameter based on ACDrv2.1 driving chip, compatible different types of controllable silicon dimmer, and support that 0-10V simulates direct non-pole light regulating.And this utility model uses mirror-surface aluminum base board, LED wafer is arranged in the mode of rectangle and is located on single-sided aluminum-base plate, LED wafer is located at one end of mirror-surface aluminum base board, the other end of mirror-surface aluminum base board is located at by drive circuit, reasonably circuit, light source arrangement so that evenly, this utility model disturbs radiating effect without EMI, this specific embodiment can directly replace tradition LED projector lamp, flood light, easy to assembly.

Accompanying drawing explanation

Fig. 1 is part-structure schematic diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Drawing reference numeral illustrates: 1. light source；11.LED wafer；12. mirror-surface aluminum base board；13. screw fixing holes；2. drive power supply；3. fluorescent colloid；4. box dam colloid.

Detailed description of the invention

nullRefer to shown in Fig. 1-2，This utility model about this utility model about a kind of LED light engine，Including support、Light source 1、Drive power supply 2，Described light source 1、Power supply 2 is driven all to be located on support，Described light source 1 is connected with drive circuit 2，Described light source 1 is the LED integrated optical source 1 using COB encapsulation，Described light source 1 includes LED wafer 11、Mirror-surface aluminum base board 12，Described LED wafer 11 is located at one end, mirror-surface aluminum base board 12 surface，Described LED wafer 11 surface is coated with fluorescent colloid 3，Described fluorescent colloid 3 is formed around box dam colloid 4，Described driving power supply 2 includes the drive circuit with ACDrv2.1 as driving chip，Mirror-surface aluminum base board 12 other end is located at by described drive circuit，And it is connected with LED wafer 11，Described mirror-surface aluminum base board 12 is rectangle mirror-surface aluminum base board 12，Described mirror-surface aluminum base board 2 is provided with screw fixing hole 13 around LED wafer 1 four jiaos，Described mirror-surface aluminum base board 12 is screwed hole 13 and fixes with support.

Compared with prior art, this utility model uses the LED integrated optical source 1 of COB encapsulation, light-out effect is more uniform, soft, power supply 2 is driven to use ACDrv2.1 driving chip, eliminate the element such as electrochemical capacitor and transformator, simplify design circuit, and effectively reduce and take up room, there is low cost, small size, stable performance, the advantage of life-span length.Ideal source parameter based on ACDrv2.1 driving chip, compatible different types of controllable silicon dimmer, and support that 0-10V simulates direct non-pole light regulating.This utility model disturbs without EMI, and this specific embodiment can directly replace tradition LED projector lamp, flood light, easy to assembly.

Specifically, the mode that described LED wafer 11 is arranged in rectangle is located in mirror-surface aluminum base board 12, and described LED wafer 11 uses EK-EEBLKE11B wafer blue-light LED chip.

Specifically, described drive circuit includes ACDrv2.1 driving chip, first metal-oxide-semiconductor, second metal-oxide-semiconductor, 3rd metal-oxide-semiconductor, 4th metal-oxide-semiconductor, MB6S chip, resistance, electric capacity, described first metal-oxide-semiconductor, second metal-oxide-semiconductor, 3rd metal-oxide-semiconductor, the grid of the 4th metal-oxide-semiconductor respectively with the G1 of ACDrv2.1 driving chip, G2, G3, G4 pin connects, drain electrode is all connected with LED light source 1 negative pole, source electrode passes through resistance R1, R2, R3, R4 is connected with public terminal GND, described MB6S chip external AC power supply, output head anode is connected with LED light source 1 positive pole, and it is connected by the VCC pin of resistance R6 and ACDrv2.1 driving chip, negative pole of output end is connected with public terminal GND.

Below by specific embodiment, this utility model is further described.

nullThis specific embodiment includes support、Light source 1、Drive power supply 2，Described light source 1、Power supply 2 is driven all to be located on support，Light source 1 is connected with driving power supply 2，Light source 1 is the LED integrated optical source 1 using COB encapsulation，Light source 1 includes LED wafer 11、Mirror-surface aluminum base board 12，LED wafer 11 is located on mirror-surface aluminum base board 12 surface，LED wafer 11 surface is coated with fluorescent colloid 3，Fluorescent colloid 3 is formed around box dam colloid 4，Power supply 2 is driven to include the drive circuit with ACDrv2.1 as driving chip，Drive circuit is located in mirror-surface aluminum base board 12，And it is connected with LED wafer 11，LED wafer 11 connects in the way of going here and there also，Mirror-surface aluminum base board 12 is rectangle mirror-surface aluminum base board 12，Mirror-surface aluminum base board 12LED wafer 11 is formed around screw fixing hole 13，Mirror-surface aluminum base board 12 is screwed hole 13 and fixes with support.

Use ACDrv2.1 driving chip; single ACDrv2.1 driving chip maximum 50W power; high efficiency, high power, low THD, compatible variety classes TRIAC light modulation, excess temperature and overvoltage protection; AC alternating voltage in chip Vsense foot tube is compared by the voltage after electric resistance partial pressure, the reference voltage fixing with inside.Export the pwm signal that dutycycle changes with input voltage change, VrefO signal is modulated, produce the control signal with input voltage negative correlation, be input to control unit.Thus when input voltage raises, compensate the trend that luminous flux becomes big, thus reach the logical control of constant light.Adding the simple peripheral drive circuit of this specific embodiment, four sections of LED current can be configured respectively, improves the utilization rate of LED and improves THD, eliminating electrochemical capacitor and the element of these LED lamp life-span bottlenecks of transformator.

This specific embodiment can directly replace tradition LED projector lamp, flood light, 4046 sized package light sources 1, it is not necessary to external power supply can be applied.Light source uses standard COB packaging technology, and use specular aluminium is base material, and reflecting rate is up to 98.9%, and surface copper thickness is 1oz, and surface treatment is processed as turmeric, uses high temperature resistant high reflectance ink, and ink reflectance is higher than 86%.Lamp plate size 56*99*1.2mm, light-emitting area size 34*50mm, radiating effect evenly, whole lamp housing temperature < 70 DEG C.

Through test; this specific embodiment has high-energy source conversion efficiency; power 30W during AV220V; naked luminous efficiency of source 105Lm/W, Ra>70, PF=0.98, THD=13.6; anti surge voltage>1KV; high pressure resistant>AC1500V; life-span>30000H; normally light 1000 hours light decays<5%; chip environments operating temperature-40-110 DEG C; when ambient temperature is too high or too low, chip can check and close work automatically until reaching in working range, reaches overheat protector function, can be applicable to industrial lighting LED projector lamp, flood light etc..

Embodiment of above is only to be described preferred implementation of the present utility model; not scope of the present utility model is defined; on the premise of without departing from this utility model design spirit; various deformation that the technical solution of the utility model is made by this area ordinary skill technical staff and improvement, all should fall in the protection domain that claims of the present utility model determine.

Claims

null1. a LED light engine，Including support、Light source、Drive power supply，Described light source、Power supply is driven all to be located on support，Described light source is connected with drive circuit，It is characterized in that: described light source is the LED integrated optical source using COB encapsulation，Described light source includes LED wafer、Mirror-surface aluminum base board，Described LED wafer is located at one end, mirror-surface aluminum base board surface，Described LED wafer surface is coated with fluorescent colloid，Described fluorescent colloid is formed around box dam colloid，Described driving power supply includes the drive circuit with ACDrv2.1 as driving chip，The mirror-surface aluminum base board other end is located at by described drive circuit，And it is connected with LED wafer，Described mirror-surface aluminum base board is rectangle mirror-surface aluminum base board，Described mirror-surface aluminum base board is provided with screw fixing hole around LED wafer corner，Described mirror-surface aluminum base board is screwed hole and fixes with support.
A kind of LED light engine the most according to claim 1, it is characterised in that: described LED wafer is arranged in the mode of rectangle and is located in mirror-surface aluminum base board, and described LED wafer uses EK-EEBLKE11B wafer blue-light LED chip.
nullA kind of LED light engine the most according to claim 1，It is characterized in that: described drive circuit includes ACDrv2.1 driving chip、First metal-oxide-semiconductor、Second metal-oxide-semiconductor、3rd metal-oxide-semiconductor、4th metal-oxide-semiconductor、MB6S chip、Resistance、Electric capacity,Described first metal-oxide-semiconductor、Second metal-oxide-semiconductor、3rd metal-oxide-semiconductor、The grid of the 4th metal-oxide-semiconductor respectively with the G1 of ACDrv2.1 driving chip、G2、G3、G4 pin connects，Drain electrode is all connected with LED light source negative pole，Source electrode passes through resistance R1、R2、R3、R4 is connected with public terminal GND，Described MB6S chip external AC power supply，Output head anode is connected with LED light source positive pole，And it is connected by the VCC pin of resistance R6 and ACDrv2.1 driving chip，Negative pole of output end is connected with public terminal GND.
nullA kind of LED light engine the most according to claim 3，It is characterized in that: the S1 pin of described ACDrv2.1 driving chip passes through resistance R1、R2、R3、R4 is connected with public terminal GND，S2 pin passes through resistance R2、R3、R4 is connected with public terminal GND，S3 pin passes through resistance R3、R4 is connected with public terminal GND，S4 pin is connected with public terminal GND by resistance R4，VCC pin passes through resistance R6、R9、R10 is connected with public terminal GND，It is connected with public terminal GND also by electric capacity C4，Vsense pin is connected with public terminal GND by resistance R10，PWM pin passes through resistance R8、Electric capacity C5 is connected with public terminal GND，VREFO pin passes through resistance R8、Electric capacity C5 is connected with public terminal GND，VREFI pin is connected with public terminal GND by electric capacity C5.
A kind of LED light engine the most according to claim 3, it is characterised in that: the input of described MB6S chip is in parallel with electric capacity C1, electric capacity C2 the most respectively.