CN106195677B

CN106195677B - LED light engine

Info

Publication number: CN106195677B
Application number: CN201610686842.6A
Authority: CN
Inventors: 张志海; 曾平; 程治明; 胡俊
Original assignee: China Energy Saving Jinghe Technology Co ltd
Current assignee: China Energy Saving Jinghe Technology Co ltd
Priority date: 2016-08-19
Filing date: 2016-08-19
Publication date: 2023-04-25
Anticipated expiration: 2036-08-19
Also published as: CN106195677A

Abstract

The invention discloses an LED light engine, which comprises an optical mask, a reflecting plate, an LED light source, a driving module, a vapor chamber, an adapter and a lightning protector. The reflector is embedded in the optical mask, the LED light source is installed on the reflector, the reflector is fixed on the soaking plate, the soaking plate is fixed at the bottom of the optical mask, the adapter is installed at the center of the soaking plate, the adapter is connected with the lamp shell, and the LED driving circuit is distributed on the driving module. The LED light engine disclosed by the invention adopts the design of the optical mask and the reflecting plate, and only one set of optical mask and the reflecting plate is needed for one set of lamp, so that the cost of product development is greatly reduced. The LED light engine adopts a mode of mounting from inside to outside, breaks through the traditional mode of mounting from outside, and is more beneficial to cleaning and maintenance of the surface of the optical mask.

Description

LED light engine

Technical Field

The invention belongs to the technical field of semiconductor illumination, and particularly relates to an LED light engine.

Background

In recent years, due to the development of LED technology, LED lighting has been accepted and adopted by most users, various LED lamps and lanterns are layered endlessly, and the structures of LED light engines are also various. In LED fixtures, the LED light engine directly affects its lighting effect, and therefore, the light engine is one of the most important components in the LED fixture.

However, the existing LED light engine is usually directly fixed on the lamp housing, so that an additional design of the lamp housing matched with the existing LED light engine is required, and the replacement of the LED light engine is poor. Meanwhile, the LED light engine has more parts, and gaps among the parts are larger, so that the size of the light engine is larger. The LED light engine is driven by an additional LED driving power supply, and certain cost and additional volume are certainly added to the LED lamp.

In addition, the existing LED lamp is generally composed of a plurality of LED light source modules, each LED light source module is provided with a lens surface cover, each lens surface cover is composed of a plurality of LED lenses in an arrangement mode, each LED lamp bead corresponds to one LED lens, the light distribution mode is single, the whole optical design cannot be carried out, the light energy is not fully utilized, the shape is irregular, the processing difficulty is high, and the manufacturing cost is high. Meanwhile, the surface of the lens is not smooth and uneven, dust is easy to be hidden and stained on the surface of the lens, and the luminous efficiency is affected after the surface of the lens is covered with the dust, so that the luminous flux is greatly reduced.

Disclosure of Invention

The invention aims to solve the technical problems that the existing LED light engine is large in size, high in cost and incapable of performing overall optical design, and provides the LED light engine which is simple, small and exquisite, good in universality and high in light energy utilization rate.

In order to solve the technical problems of the invention, the invention is realized by the following technical scheme: the LED light engine comprises an optical mask 1, a reflecting plate 2, an LED light source 3, a driving module 4, a soaking plate 5, an adapter 6 and a lightning protection device 7, wherein the reflecting plate 2 is embedded in the optical mask 1, the LED light source 3 is installed on the reflecting plate 2, the reflecting plate 2 is fixed on the soaking plate 5, the soaking plate 5 is fixed at the bottom of the optical mask 1, the adapter 6 is installed at the center of the soaking plate 5, and the adapter 6 is connected with a lamp shell; the driving module 4 is provided with an LED driving circuit 41.

Preferably, the lightning protection device 7 is disposed in the optical mask 1, and is disposed in a cavity formed by the smooth curved surface 122 and the reflector 2.

Preferably, the lightning protection device 7 is built into the adapter 6.

Preferably, the lightning protection device 7 is placed outside the LED light engine.

Preferably, the optical mask 1 is made of transparent material, the outer surface of the optical mask 1 is a smooth curved surface to form a light-emitting surface 11, the inner surface of the optical mask 1 is an incident surface 12, and an optical cavity 13 is formed inside the optical mask 1.

Preferably, the thickness between the light emitting surface 11 and the incident surface 12 is 1 mm-6 mm.

Preferably, the middle part of the incident surface 12 is a light distribution surface 121, the two end parts are smooth curved surfaces 122, and two sides of the light distribution surface 121 adjacent to the smooth curved surfaces 122 are respectively provided with a clamping point 14 for positioning the reflector 2.

Preferably, the light distribution surface 121 is provided with a plurality of pleats 1211, and the pleats 1211 are connected in sequence.

Preferably, the optical mask 1 has a central axis 15 in a longitudinal direction, and the pleats 1211 are positioned highest on the central axis 15 and gradually decrease toward both sides.

Preferably, the optical mask 1 is provided with an edge structure 16, positioning holes 161 for fixing the optical mask 1 are uniformly arranged on the edge structure 16, and mounting holes 51 matched with the positioning holes 161 are uniformly arranged on the edge of the soaking plate.

Preferably, the edge structure 16 is provided with a waterproof rubber ring groove 162, and the waterproof rubber ring groove 162 is embedded with a sealing rubber ring, so that the sealing performance is good, and the IP protection level is improved.

Preferably, the positioning hole 161 is disposed from the edge structure 16 to the outside, and does not penetrate the edge structure 16.

Preferably, the optical mask 1 is provided with a respirator, so that the waterproof capability can be improved, and the IP grade can be improved.

Preferably, the reflector 2 is placed in the optical cavity 13; the reflector plate 2 is in the shape of "

"shape including a bottom surface 21 and two reflecting surfaces 22 extending upward from the bottom surface 21 to the light distribution surface 121; the reflecting surface 22 is seamlessly joined to the optical mask 1 and is positioned by the clip point 14.

Preferably, the light distribution surface 121 is sandwiched between the two reflection surfaces 22 to form a light distribution region.

Preferably, a window 211 for placing the light source is arranged in the center of the bottom surface 21, and the LED light source 3 is fixed on the window 211.

Preferably, screw holes 212 are further formed on the bottom surface 21 of the reflector 2, so as to fix the reflector 2 to the profile.

Preferably, the smooth curved surface 122 and the reflecting surface 22 form an enclosed space for accommodating electronic components.

Preferably, the adapter 6 includes a hand-screwed nut 61 and a fixing base 62, the hand-screwed nut 61 is screwed on the fixing base 62, and the fixing base 62 is fixed at the center of the soaking plate 5.

Preferably, the hand-screwed nut 61 has a hollow cylindrical structure, the inner side is provided with an internal thread 611, and the outer side is uniformly provided with lugs 612.

Preferably, the outer side of the bottom of the fixing base 62 is provided with external threads 621 matching with the internal threads 611, and the top is provided with a wiring hole 622.

Preferably, the hand-screwed nut 61 is in threaded connection with the fixing seat 62, and lugs 612 are uniformly arranged on the outer side of the hand-screwed nut 61, so that the hand-screwed nut is convenient to assemble and disassemble by hands, and tools are not needed.

Preferably, a window and a cover are arranged at the top end of the fixing seat 62, and the cover is used for opening and closing the window, so that the lightning protection device 7 is convenient to install and maintain.

Preferably, the LED driving circuit 41 includes a dimming control module 421, a filtering rectification module 422 and a high-voltage linear constant current module 423, where the dimming control module 421 is connected to the high-voltage linear constant current module 423 through a dimming signal end 424, one end of the filtering rectification module 422 is connected to the ac mains supply, the other end is connected to the high-voltage linear constant current module 423, and the high-voltage linear constant current module 423 is connected to at least one group of LEDs connected in parallel to each other and its loop.

Preferably, the dimming control module 421 includes a PWM-, a self-recovery fuse F1, a first resistor R1, an optocoupler U1, a diode D1, and a pwm+, where the optocoupler U1 includes a photodiode D2 and a triode D3, a collector of the triode D3 is connected to the second resistor R2 in series and then to the dimming signal terminal 424, an emitter of the triode D3 is grounded, the PWM-, the self-recovery fuse F1, and the first resistor R1 are sequentially connected to an input terminal of the photodiode D2, and the pwm+, the diode D1 are sequentially connected to an output terminal of the photodiode D2.

Preferably, the driving circuit 41 further includes a TVS tube connected in parallel between pwm+ and PWM-, one end of which is connected between pwm+ and diode D1, and the other end of which is connected between PWM-and self-recovering fuse F1.

Compared with the prior art, the invention has the beneficial effects that:

according to the LED light engine disclosed by the invention, the lightning protector can be arranged in the shopping mask or the adapter or outside the light engine, and can be flexibly selected according to the needs, so that the LED light engine is effectively protected. By adopting the design of the optical face mask and the reflecting plate, one set of lamp only needs one set of optical face mask and the reflecting plate, thereby greatly reducing the cost of product development. The LED optical cavity is large, and when a plurality of light sources are placed, the reflecting plate is favorable for mixing light, so that the chromaticity is uniform, and the glare is reduced. The light-emitting surface of the optical mask is smooth, adhesion and accumulation of dust are not easy, a self-cleaning effect is achieved when the optical mask is washed by natural wind and rain, and the later-stage manual maintenance cost is reduced. The traditional lens face cover is a plurality of lenses of range, and the surface is uneven, very easily deposition, and rainwater washes also can not reach clean effect. The respirator and the waterproof rubber ring are arranged on the optical mask, so that the waterproof capability and the IP grade can be improved. The LED light engine adopts a mode of mounting from inside to outside, breaks through the traditional mode of mounting from outside, and is more beneficial to cleaning and maintenance of the surface of the optical mask. The adapter is connected with the traditional lamp housing, so that the standardization of an LED light engine interface is facilitated; the adapter adopts threaded connection, and is equipped with the tab, can bare-handed dismouting, need not the instrument, it is convenient to maintain. By adopting the design of the driving module, no additional driving power supply is needed, the volume and the weight are reduced, and the production cost is reduced.

Drawings

Fig. 1 is a block diagram of an LED light engine.

Fig. 2 is an exploded view of an LED light engine.

Fig. 3 is a block diagram of an optical mask.

Fig. 4 is a front view of an optical mask.

Fig. 5 is a structural view of a reflector.

Fig. 6 is a schematic diagram of a driving circuit.

Reference numerals: 1. an optical mask; 11. a light-emitting surface; 12. an incidence surface; 121 light distribution surface; 1211. folding; 122. a smooth curved surface; 13. an optical cavity; 14. a stuck point; 15. a central axis; 16. an edge structure; 161. positioning holes; 162. a waterproof rubber ring groove; 2. a light reflecting plate; 21. a bottom surface; 211. a window; 212. screw holes; 22. a reflecting surface; 3. an LED light source; 4. a driving module; 41. an LED driving circuit; 421. a dimming control module; 422. a filtering rectification module; 423. a high voltage linear constant current module; 424. a dimming signal terminal; 5. a soaking plate; 51. a mounting hole; 6. an adapter; 61. screwing the nut by hand; 611. an internal thread; 612. ear pieces; 62. a fixing seat; 621. an external thread; 622. a wiring hole; 7. a lightning arrester.

Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, the LED light engine comprises an optical mask 1, a reflector 2, an LED light source 3, a driving module 4, a soaking plate 5, an adapter 6 and a lightning protection device 7, wherein the reflector 2 is embedded in the optical mask 1, the LED light source 3 is installed on the reflector 2, the reflector 2 is fixed on the soaking plate 5, the soaking plate 5 is fixed at the bottom of the optical mask 1, the adapter 6 is installed at the center of the soaking plate 5, and the adapter 6 is connected with a lamp housing; the driving module 4 is provided with an LED driving circuit 41.

Further, the lightning protection device 7 is disposed in the optical mask 1, and disposed in a cavity formed by the smooth curved surface 122 and the reflector 2, for protecting the LED light engine.

Further, the lightning protection device 7 is built in the adapter 6 and is used for protecting the LED light engine.

Further, the lightning protector 7 is arranged outside the LED light engine for protecting the LED light engine.

Further, the optical mask 1 is made of transparent material, the outer surface of the optical mask 1 is a smooth curved surface to form a light-emitting surface 11, the inner surface of the optical mask 1 is an incident surface 12, and an optical cavity 13 is formed inside the optical mask 1.

Further, the thickness between the light emitting surface 11 and the incident surface 12 is 1mm to 6mm.

Further, the middle part of the incident surface 12 is a light distribution surface 121, the two end parts are smooth curved surfaces 122, and two sides of the light distribution surface 121 adjacent to the smooth curved surfaces 122 are respectively provided with a clamping point 14 for positioning the reflector 2.

Further, the light distribution surface 121 is provided with a plurality of wrinkles 1211, and the wrinkles 1211 are connected in sequence.

Further, the optical mask 1 has a central axis 15 in the longitudinal direction, and the pleats 1211 are positioned highest on the central axis 15 and gradually lower to both sides.

Further, the optical mask 1 is provided with an edge structure 16, positioning holes 161 for fixing the optical mask 1 are uniformly arranged on the edge structure 16, and mounting holes 51 matched with the positioning holes 161 are uniformly arranged on the edges of the soaking plates.

Further, the edge structure 16 is provided with a waterproof rubber ring groove 162, and the waterproof rubber ring groove 162 is embedded with a sealing rubber ring, so that the sealing performance is good, and the IP protection level is improved.

Further, the positioning hole 161 is disposed from inside to outside of the edge structure 16, does not penetrate through the edge structure 16, and breaks through the traditional mounting manner from outside by adopting the mounting manner from inside, thereby being more beneficial to cleaning and maintenance of the surface of the optical mask.

Further, the respirator is arranged on the optical mask 1, so that the waterproof capability can be improved, and the IP grade can be improved.

Further, the reflector 2 is arranged in the optical cavity 13; the reflector plate 2 is in the shape of "

Further, the light distribution surface 121 is sandwiched between the two reflecting surfaces 22 to form a light distribution area, the reflecting surfaces 22 are used for reflecting side light into the light distribution area, and no light is refracted out from the smooth curved surfaces 122 at the two ends of the incident surface 12.

Further, a window 211 for placing the light source is arranged in the center of the bottom surface 21, and the LED light source 3 is fixed on the window 211.

Further, screw holes 212 are further formed on the bottom surface 21 of the reflector 2, so as to fix the reflector 2 to the profile.

Further, the smooth curved surface 122 and the reflecting surface 22 form a closed space for accommodating electronic components.

Further, the adaptor 6 includes a hand-screwed nut 61 and a fixing base 62, the hand-screwed nut 61 is screwed on the fixing base 62, and the fixing base 62 is fixed at the center of the soaking plate 5.

Further, the hand-screwed nut 61 has a hollow cylindrical structure, the inner side is provided with an internal thread 611, and the outer side is uniformly provided with lugs 612.

Further, an external thread 621 matching with the internal thread 611 is provided on the outer side of the bottom of the fixing base 62, and a wiring hole 622 is provided on the top.

Further, the hand-screwed nut 61 is in threaded connection with the fixing seat 62, and lugs 612 are uniformly arranged on the outer side of the hand-screwed nut 61, so that the hand-screwed nut is convenient to assemble and disassemble by hands, and tools are not needed.

Further, a window and a cover are arranged at the top end of the fixing seat 62, and the cover is used for opening and closing the window, so that the lightning protection device 7 is convenient to install and maintain.

Referring to fig. 6, the LED driving circuit 41 includes a dimming control module 421, a filtering rectification module 422 and a high-voltage linear constant current module 423, where the dimming control module 421 is connected to the high-voltage linear constant current module 423 through a dimming signal end 424, one end of the filtering rectification module 422 is connected to the ac mains, and the other end is connected to the high-voltage linear constant current module 423, and the high-voltage linear constant current module 423 is connected to at least one group of LEDs connected in parallel with each other and its loop.

Further, the dimming control module 421 includes a PWM-, a self-recovery fuse F1, a first resistor R1, an optocoupler U1, a diode D1 and pwm+, the optocoupler U1 includes a photodiode D2 and a triode D3, a collector of the triode D3 is connected in series with the second resistor R2 and then connected to the dimming signal terminal 424, an emitter of the triode D3 is grounded, the PWM-, the self-recovery fuse F1 and the first resistor R1 are sequentially connected to an input terminal of the photodiode D2, the pwm+ and the diode D1 are sequentially connected to an output terminal of the photodiode D2, and direct electrical connection between two ends of the dimming control module 421 isolated by the optocoupler U1 is avoided, which not only effectively prevents interference caused by electrical connection between an internal high-voltage control circuit and an external high-voltage circuit, but also prevents electric shock. In addition, the duty ratio of the output end can be changed by adjusting the input end, and the output current is adjusted, so that the aim of accurately adjusting the power of the load LED is fulfilled.

Further, the driving circuit 41 further includes a TVS tube connected in parallel between pwm+ and PWM-, one end of which is connected between pwm+ and diode D1, and the other end of which is connected between PWM-and self-recovery fuse F1. When the high voltage is input externally, the protection can be carried out through the self-recovery fuse F1 and the TVS tube, the self-recovery fuse F1 can also effectively avoid the damage of the heavy current to the dimming control module 421, and the damage of the instantaneous high voltage to the main control chip of the dimming control module 421 can also be avoided through the TVS tube, so that the comprehensive protection of the main control chip of the dimming control module 421 is provided from the two angles of heavy current and instantaneous high voltage. As a sub-alternative, a varistor may also be connected in parallel between pwm+ and PWM-.

The above list is only one of the embodiments of the present invention. It will be obvious that the invention is not limited to the above embodiments, but that many similar variants are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.

Claims

An led light engine, characterized in that: the LED light source (3) is installed on the reflector (2), the reflector (2) is fixed on the soaking plate (5), the soaking plate (5) is fixed at the bottom of the optical mask (1), the adapter (6) is installed at the center of the soaking plate (5), and the adapter (6) is connected with the lamp shell; the LED driving circuit (41) is distributed on the driving module (4), the LED driving circuit (41) comprises a dimming control module (421), a filtering rectification module (422) and a high-voltage linear constant current module (423), the dimming control module (421) comprises a PWM-, a self-recovery fuse F1, a first resistor R1, an optocoupler U1, a diode D1 and PWM+, the optocoupler U1 comprises a photodiode D2 and a triode D3, a collector of the triode D3 is connected with a second resistor R2 in series and then is connected with a dimming signal end (424), an emitter of the triode D3 is grounded, the PWM-, the self-recovery fuse F1 and the first resistor R1 are sequentially connected with an input end of the photodiode D2, and the PWM+ and the diode D1 are sequentially connected with an output end of the photodiode D2; the dimming control module (421) is connected with the high-voltage linear constant current module (423) through a dimming signal end (424), one end of the filtering rectification module (422) is connected with alternating current mains supply, the other end of the filtering rectification module is connected with the high-voltage linear constant current module (423), and the high-voltage linear constant current module (423) is connected with at least one group of LEDs which are mutually connected in parallel and a loop of the LEDs.
2. An LED light engine as recited in claim 1, wherein: the lightning protection device (7) is arranged in the optical mask (1) or in the adapter (6) or arranged outside the LED light engine; the driving circuit (41) further comprises a TVS tube or a piezoresistor, one end of the TVS tube or the piezoresistor is connected between the PWM+ and the diode D1, and the other end of the TVS tube or the piezoresistor is connected between the PWM-and the self-recovery fuse F1.
3. The LED light engine of claim 2, wherein: the optical mask (1) is made of transparent materials, the outer surface of the optical mask is a smooth curved surface to form a light-emitting surface (11), the inner surface of the optical mask (1) is an incident surface (12), and an optical cavity (13) is formed in the optical mask (1).
4. The LED light engine of claim 3, wherein: the light distribution surface (121) is arranged in the middle of the incidence surface (12), the smooth curved surfaces (122) are arranged at the two end parts, and the clamping points (14) for positioning the reflecting plate (2) are respectively arranged at the two sides of the light distribution surface (121) adjacent to the smooth curved surfaces (122).
5. An LED light engine as recited in claim 4, wherein: the reflector (2) is arranged in the optical cavity (13); the reflector (2) is in the shape of "
"shape including a bottom surface (21) and two reflecting surfaces (22) extending upward from the bottom surface (21) to the light distribution surface (121); the reflecting surface (22) is in seamless connection with the optical mask (1) and is positioned by the clamping point (14).
6. An LED light engine as recited in claim 5, wherein: the light distribution surface (121) is sandwiched between the two reflection surfaces (22) to form a light distribution region.
7. An LED light engine as recited in claim 5, wherein: the center of the bottom surface (21) is provided with a window (211) for placing a light source, and the LED light source (3) is fixed on the window (211).
8. The LED light engine of claim 1 or 2, wherein: the adapter (6) comprises a hand-screwed nut (61) and a fixed seat (62), wherein the hand-screwed nut (61) is screwed on the fixed seat (62), and the fixed seat (62) is fixed at the center of the vapor chamber (5).
9. An LED light engine as recited in claim 8, wherein: the hand-screwed nut (61) is of a hollow cylindrical structure, the inner side of the hand-screwed nut is provided with an internal thread (611), and lugs (612) are uniformly arranged on the outer side of the hand-screwed nut.
10. An LED light engine as recited in claim 9, wherein: external threads (621) matched with the internal threads (611) are arranged on the outer side of the bottom of the fixing seat (62), and wiring holes (622) are formed in the top of the fixing seat.