CN101144591A

CN101144591A - LED fluorescent lamp

Info

Publication number: CN101144591A
Application number: CNA2007101240017A
Authority: CN
Inventors: 李旭亮
Original assignee: 李旭亮
Current assignee: Dongguan Kingsun Optoelectronic Co Ltd
Priority date: 2007-10-16
Filing date: 2007-10-16
Publication date: 2008-03-19
Anticipated expiration: 2027-10-16
Also published as: CN100538163C

Abstract

The invention relates to a lighting device, in particular to an LED daylight lamp. The LED daylight lamp comprises a cylindrical tube body. The invention is characterized in that two LED luminous bodies are respectively arranged at the both ends of the tube body, and the light extracting surfaces of the two LED luminous bodies are arranged in the opposite direction. The LED luminous bodies are LED bulbs enclosed one time, secondary optical lenses are arranged at the front parts of the light extracting surfaces of the LED luminous bodies, and light induced surfaces of the secondary optical lenses are abutted the light extracting surfaces of the LED luminous bodies. The invention provides the LED daylight lamp with high heat sinking performance and the light extracting mode being similar to the prior daylight lamp.

Description

The LED fluorescent lamp

Technical field

The present invention relates to lighting device, relate in particular to a kind of LED fluorescent lamp.

Background technology

Compare with traditional fluorescent lamp, it is long that the LED lamp has the life-span again, the light efficiency height, low in power consumption, existing LED fluorescent lamp, as, such as the disclosed LED fluorescent lamp of Chinese utility model patent document CN2908989Y, circuit board and led array all are set in the body of fluorescent tube, the LED illuminator is generally arranged along the body axial direction, the LED illuminator go out the tube wall of light center towards body, it is unsatisfactory that existing LED fluorescent lamp is promoted, on the one hand this structure heat radiation is bad, and it goes out optical mode and existing fluorescent lamp bright dipping pattern differentials is too big on the other hand, does not meet the use habit that people form for a long time.

Summary of the invention

The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part and provide a kind of and have excellent heat dispersion performance, go out the optical mode LED fluorescent lamp similar to existing fluorescent lamp.

Purpose of the present invention can be achieved through the following technical solutions:

The LED fluorescent lamp comprises the body of column it is characterized in that body two ends are provided with a LED illuminator respectively, and the exiting surface of two LED illuminators is provided with in opposite directions.

The LED fluorescent lamp is characterized in that, the LED illuminator is through an encapsulated LED bulb, and LED illuminator exiting surface the place ahead is provided with secondary optical lens, the incidence surface of the exiting surface butt secondary optical lens of LED illuminator.

The LED fluorescent lamp is characterized in that, also comprises two reflectors, and two reflectors are arranged on two ends of body, and the reflective surface of reflector is provided with in opposite directions; Two LED illuminators are separately positioned on the bottom centre of reflector.

The LED fluorescent lamp is characterized in that, the LED illuminator is arranged on the aluminium base, and the aluminium base front has insulating barrier and printed circuit, and the aluminium base reverse side is provided with radiating block, and aluminium base is connected by securing member with radiating block, and the end face of radiating block contacts with aluminium base formation face; Radiating block also is provided with heat dissipating ring outward, and heat dissipating ring is sheathed on outside the radiating block with interference fit; Also be provided with led drive circuit in the hole of heat dissipating ring, led drive circuit is electrically connected the printed circuit of aluminium base; The combination of aluminium base, radiating block, heat dissipating ring snaps onto the end of body by end cap; The other end in the hole of heat dissipating ring is provided with capping, and two strip electrodes that are electrically connected with led drive circuit are arranged in inside and outside the capping.

The LED fluorescent lamp is characterized in that, radiating block is a segment type material, and along the profile length direction, diverse location has identical cross section, and the cross section of section bar two recess, two prominent positions round by one and that be arranged on the circumference are formed; Two recess are symmetrical arranged along a diameter of circle, and two recess extend along the profile length direction, form two grooves; Two prominent positions are symmetrical arranged along a diameter of circle, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the cross-sectional periphery direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; Heat dissipating ring also is a segment type material, and along the profile length direction, diverse location has identical cross section, and section bar has heat conducting wall cylindraceous; The surface is provided with the heat radiation wing outside the heat conducting wall, and the heat radiation wing along the circumferential direction evenly distributes at the heat conducting wall outer surface, and the wing that respectively dispels the heat is highly equal; The surface has two recess within the heat conducting wall, and two recess are symmetrical arranged in opposite directions and along a diameter, and two recess extend along the profile length direction, form two grooves; The surface has two prominent positions within the heat conducting wall, and two prominent positions are symmetrical arranged in opposite directions and along a diameter, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the heat conducting wall circumferencial direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively.

The LED fluorescent lamp is characterized in that, a two-sided reflecting piece is set in the body, and two-sided reflecting piece is arranged between two LED illuminators.

The LED fluorescent lamp is characterized in that, two light reflecting piece are arranged on the symmetrical centre of two LED illuminators.

The LED fluorescent lamp is characterized in that, two-sided reflecting piece has the reflective sphere that two parallel reflective planes can two projections.

The LED fluorescent lamp is characterized in that, the LED illuminator is through an encapsulated LED bulb, and LED illuminator exiting surface the place ahead is provided with secondary optical lens, the incidence surface of the exiting surface butt secondary optical lens of LED illuminator; The LED illuminator is arranged on the aluminium base, and the aluminium base front has insulating barrier and printed circuit, and the aluminium base reverse side is provided with radiating block, and aluminium base is connected by securing member with radiating block, and the end face of radiating block contacts with aluminium base formation face; Radiating block also is provided with heat dissipating ring outward, and heat dissipating ring is sheathed on outside the radiating block with interference fit; Also be provided with led drive circuit in the hole of heat dissipating ring, led drive circuit is electrically connected the printed circuit of aluminium base; The combination of aluminium base, radiating block, heat dissipating ring snaps onto the end of body by end cap; The other end in the hole of heat dissipating ring is provided with capping, and two strip electrodes that are electrically connected with led drive circuit are arranged in inside and outside the capping; Radiating block is a segment type material, and along the profile length direction, diverse location has identical cross section, and the cross section of section bar two recess, two prominent positions round by one and that be arranged on the circumference are formed; Two recess are symmetrical arranged along a diameter of circle, and two recess extend along the profile length direction, form two grooves; Two prominent positions are symmetrical arranged along a diameter of circle, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the cross-sectional periphery direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; Heat dissipating ring also is a segment type material, and along the profile length direction, diverse location has identical cross section, and section bar has heat conducting wall cylindraceous; The surface is provided with the heat radiation wing outside the heat conducting wall, and the heat radiation wing along the circumferential direction evenly distributes at the heat conducting wall outer surface, and the wing that respectively dispels the heat is highly equal; The surface has two recess within the heat conducting wall, and two recess are symmetrical arranged in opposite directions and along a diameter, and two recess extend along the profile length direction, form two grooves; The surface has two prominent positions within the heat conducting wall, and two prominent positions are symmetrical arranged in opposite directions and along a diameter, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the heat conducting wall circumferencial direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; One two-sided reflecting piece is set in the body, and two-sided reflecting piece is arranged between two LED illuminators; Two light reflecting piece are arranged on the symmetrical centre of two LED illuminators; Two-sided reflecting piece has the reflective sphere that two parallel reflective planes can two projections.

The LED fluorescent lamp is characterized in that, the LED fluorescent lamp also comprises two reflectors, and two reflectors are arranged on two ends of body, and the reflective surface of reflector is provided with in opposite directions; Two LED illuminators are separately positioned on the bottom centre of reflector; The LED illuminator is arranged on the aluminium base, and the aluminium base front has insulating barrier and printed circuit, and the aluminium base reverse side is provided with radiating block, and aluminium base is connected by securing member with radiating block, and the end face of radiating block contacts with aluminium base formation face; Radiating block also is provided with heat dissipating ring outward, and heat dissipating ring is sheathed on outside the radiating block with interference fit; Also be provided with led drive circuit in the hole of heat dissipating ring, led drive circuit is electrically connected the printed circuit of aluminium base; The combination of aluminium base, radiating block, heat dissipating ring snaps onto the end of body by end cap; The other end in the hole of heat dissipating ring is provided with capping, and two strip electrodes that are electrically connected with led drive circuit are arranged in inside and outside the capping; Radiating block is a segment type material, and along the profile length direction, diverse location has identical cross section, and the cross section of section bar two recess, two prominent positions round by one and that be arranged on the circumference are formed; Two recess are symmetrical arranged along a diameter of circle, and two recess extend along the profile length direction, form two grooves; Two prominent positions are symmetrical arranged along a diameter of circle, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the cross-sectional periphery direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; Heat dissipating ring also is a segment type material, and along the profile length direction, diverse location has identical cross section, and section bar has heat conducting wall cylindraceous; The surface is provided with the heat radiation wing outside the heat conducting wall, and the heat radiation wing along the circumferential direction evenly distributes at the heat conducting wall outer surface, and the wing that respectively dispels the heat is highly equal; The surface has two recess within the heat conducting wall, and two recess are symmetrical arranged in opposite directions and along a diameter, and two recess extend along the profile length direction, form two grooves; The surface has two prominent positions within the heat conducting wall, and two prominent positions are symmetrical arranged in opposite directions and along a diameter, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the heat conducting wall circumferencial direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; One two-sided reflecting piece is set in the body, and two-sided reflecting piece is arranged between two LED illuminators; Two light reflecting piece are arranged on the symmetrical centre of two LED illuminators; Two-sided reflecting piece has the reflective sphere that two parallel reflective planes can two projections.

The LED fluorescent tube that the present invention relates to, the body that comprises column, body two ends are provided with a LED illuminator respectively, and the exiting surface of two LED illuminators is provided with in opposite directions, the contrast prior art, the two ends ratio that the LED illuminator is arranged on body is enclosed in the easier heat radiation in body inside; Existing LED fluorescent lamp heat radiation technology, on the one hand the body inner air flow is not smooth, and the LED illuminator is too far away apart from the body end on the other hand, can't form effective heat loss through conduction with heat radiation part such as end cap; And the heat that the present invention's LED illuminator produces can not rely on the heat transmission of body itself, does not rely on the circulation of inner air tube yet, and directly other part by being arranged on body two ends (as end cap or special-purpose heat dissipating ring etc.) dispels the heat; Compared with prior art has better radiating effect.From use angle, the optical mode that goes out of the LED fluorescent tube that the present invention relates to is arranged on the middle irradiation of the LED illuminator of body two ends to body, by the tube body wall bright dipping, and prior art LED fluorescent lamp, the LED illuminator go out the tube wall of light center towards body, therefore, the LED fluorescent lamp that the present invention relates to go out optical mode, than the more approaching traditional fluorescent lamp of the LED fluorescent lamp of prior art, more meet people's use habit.

Description of drawings

Fig. 1 is the front view of first embodiment of the invention.

Fig. 2 is the A-A cutaway view among Fig. 1.

Fig. 3 is the B-B cutaway view among Fig. 2.

Fig. 4 is the side view of first embodiment of the invention.

Fig. 5 is a C-C profile among Fig. 2.

Fig. 6 is the partial perspective view of first embodiment of the invention.

Fig. 7 is the decomposing schematic representation of first embodiment of the invention.

Fig. 8 is a D place partial enlarged drawing among Fig. 2.

Fig. 9 is an E place partial enlarged drawing among Fig. 3.

Figure 10 is a F place partial enlarged drawing among Fig. 7.

Figure 11 is a G place partial enlarged drawing among Fig. 7.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing.

First embodiment of the present invention is a kind of LED fluorescent tube, referring to figs. 1 to Figure 11, the LED fluorescent lamp comprises the body 101 of column, also comprises two LED illuminators 107, two LED illuminators 107 are separately positioned on two ends of body 101, and the exiting surface of two LED illuminators 107 is provided with in opposite directions; A two-sided reflecting piece 113 is set in the body 101, and two-sided reflecting piece 113 is arranged between two LED illuminators 107; Body 101 2 ends also are respectively equipped with led drive circuit 110 and the heat abstractor that works alone.The cross section of body 101 is circular, and reflecting piece 113 also is circular; Heat abstractor in the present embodiment is the heat dissipating ring 103 of hollow, and the outer wall of heat dissipating ring 103 is provided with the heat radiation wing, and described drive circuit 110 is arranged on heat dissipating ring 103 inside; Two light reflecting piece 113 are arranged on the symmetrical centre of LED illuminator 107; Body 101 2 ends also are respectively equipped with a reflector 108, the heart among LED illuminator 107 is arranged at the bottom of 108 glasss of the reflectors; Two-sided reflecting piece 113 has two parallel reflective planes.In the present embodiment, body 101 inwalls are provided with the rib of two projections, and angle is greatly most 120 ° between two ribs, with reference to figure 7 and attached 10, reflective membrane 111 and diffusion barrier 112 are set in the body 101, separate with aforesaid two ribs.In the present embodiment, two ends of body 101 only are provided with a LED illuminator 107 respectively, and two end structure symmetries, only be illustrated below with regard to an end structure, LED illuminator 107 is arranged on the aluminium base 106, with reference to figure 8,9,10, aluminium base 106 the place aheads are provided with reflector 108, and aluminium base 106, LED illuminator 107, reflector 108 all are arranged in the end cap 102; The end of heat dissipating ring 103 endoporus connects a radiating block 109 by interference fit, and in the present embodiment, heat dissipating ring 103 and radiating block 109 are aluminum component, certainly, also can make of aluminium alloy or other hot good conductor; Refer again to Fig. 8,9,10, end cap 102 and aluminium base 106 are connected heat dissipating ring 103 ends by screw, and in the present embodiment, screw is connected with radiating block 109; For heat radiation better, aluminium base 106 be with forming contact-making surface between the radiating block 109, in case of necessity, can give with the faying face of radiating block 109 at aluminium base 106 and be coated with heat-conducting glue, to reach better heat-conducting effect.Reflector 108 is arranged in the end cap 102 by adhesive means (can certainly be welding or by mechanical connection manners such as securing members); The other end of heat dissipating ring 103 opposite end of end cap 102 (connect) connects capping 105, two strip electrodes 104 and is arranged in capping 105, two strip electrodes 104 and heat dissipating ring 103 interior led drive circuits 110 and is electrically connected; Be connected by screw between capping 105 and the heat dissipating ring 103; Led drive circuit 110 is connected with the LED illuminator 107 that is arranged at aluminium base 106; In the present embodiment, end cap 102 is provided with button bit, and body 101 ends are provided with and the corresponding perforate of button bit, and end cap 102 is connected with body 101 by the mode of snapping; With reference to Figure 11, in the present embodiment, two-sided reflecting piece 113 is to insert body 101 by an opening on the body 101, for the mechanical performance of body 101 not because of opening weakens, pack into after the two-sided reflecting piece 113, can also opening be sealed with glue; The LED luminescence technology itself is a mature technology, and led drive circuit 110, aluminium base 106, LED illuminator 107 can adopt commercial product.

Second embodiment of the present invention also is a kind of LED fluorescent tube, be with the difference of first embodiment of the invention, the cross section of body is oval, accordingly, reflecting piece also is oval, described heat abstractor is the oval heat dissipating ring of hollow, and the outer wall of heat dissipating ring is provided with the heat radiation wing, and described drive circuit is arranged on heat dissipating ring inside; Certainly can make hexagon or other shape; And two light reflecting piece are apart from the distance of a LED illuminator, greater than the distance of two light reflecting piece apart from another illuminator; The place ahead of the exiting surface of LED illuminator is provided with secondary optical lens, replaces the reflector among first embodiment, and secondary optical lens is used to control light direction, makes to penetrate light more equably to the body scattering; Secondary optical lens can be chosen commercial product; The reflective plane that is not both two-sided reflecting piece with another point of first embodiment is the cambered surface of projection, so that reverberation is to the body directional scattering.

With reference to above two embodiment, be easy to realize other technical scheme of summary of the invention, no longer repeat.

Claims

1.LED fluorescent lamp comprises the body of column it is characterized in that body two ends are provided with a LED illuminator respectively, and the exiting surface of two LED illuminators is provided with in opposite directions.

2. LED fluorescent lamp according to claim 1 is characterized in that, the LED illuminator is through an encapsulated LED bulb, and LED illuminator exiting surface the place ahead is provided with secondary optical lens, the incidence surface of the exiting surface butt secondary optical lens of LED illuminator.

3. LED fluorescent lamp according to claim 1 is characterized in that, also comprises two reflectors, and two reflectors are arranged on two ends of body, and the reflective surface of reflector is provided with in opposite directions; Two LED illuminators are separately positioned on the bottom centre of reflector.

4. according to the described LED fluorescent lamp of aforementioned any claim, it is characterized in that, the LED illuminator is arranged on the aluminium base, the aluminium base front has insulating barrier and printed circuit, the aluminium base reverse side is provided with radiating block, aluminium base is connected by securing member with radiating block, and the end face of radiating block contacts with aluminium base formation face; Radiating block also is provided with heat dissipating ring outward, and heat dissipating ring is sheathed on outside the radiating block with interference fit; Also be provided with led drive circuit in the hole of heat dissipating ring, led drive circuit is electrically connected the printed circuit of aluminium base; The combination of aluminium base, radiating block, heat dissipating ring snaps onto the end of body by end cap; The other end in the hole of heat dissipating ring is provided with capping, and two strip electrodes that are electrically connected with led drive circuit are arranged in inside and outside the capping.

5. LED fluorescent lamp according to claim 4 is characterized in that, radiating block is a segment type material, and along the profile length direction, diverse location has identical cross section, and the cross section of section bar two recess, two prominent positions round by one and that be arranged on the circumference are formed; Two recess are symmetrical arranged along a diameter of circle, and two recess extend along the profile length direction, form two grooves; Two prominent positions are symmetrical arranged along a diameter of circle, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the cross-sectional periphery direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; Heat dissipating ring also is a segment type material, and along the profile length direction, diverse location has identical cross section, and section bar has heat conducting wall cylindraceous; The surface is provided with the heat radiation wing outside the heat conducting wall, and the heat radiation wing along the circumferential direction evenly distributes at the heat conducting wall outer surface, and the wing that respectively dispels the heat is highly equal; The surface has two recess within the heat conducting wall, and two recess are symmetrical arranged in opposite directions and along a diameter, and two recess extend along the profile length direction, form two grooves; The surface has two prominent positions within the heat conducting wall, and two prominent positions are symmetrical arranged in opposite directions and along a diameter, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the heat conducting wall circumferencial direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively.

6. according to any described LED fluorescent lamp of claim 1 to 3, it is characterized in that a two-sided reflecting piece is set in the body, and two-sided reflecting piece is arranged between two LED illuminators.

7. LED fluorescent lamp according to claim 6 is characterized in that two light reflecting piece are arranged on the symmetrical centre of two LED illuminators.

8. LED fluorescent lamp according to claim 6 is characterized in that, two-sided reflecting piece has the reflective sphere that two parallel reflective planes can two projections.

9. LED fluorescent lamp according to claim 1 is characterized in that, the LED illuminator is through an encapsulated LED bulb, and LED illuminator exiting surface the place ahead is provided with secondary optical lens, the incidence surface of the exiting surface butt secondary optical lens of LED illuminator; The LED illuminator is arranged on the aluminium base, and the aluminium base front has insulating barrier and printed circuit, and the aluminium base reverse side is provided with radiating block, and aluminium base is connected by securing member with radiating block, and the end face of radiating block contacts with aluminium base formation face; Radiating block also is provided with heat dissipating ring outward, and heat dissipating ring is sheathed on outside the radiating block with interference fit; Also be provided with led drive circuit in the hole of heat dissipating ring, led drive circuit is electrically connected the printed circuit of aluminium base; The combination of aluminium base, radiating block, heat dissipating ring snaps onto the end of body by end cap; The other end in the hole of heat dissipating ring is provided with capping, and two strip electrodes that are electrically connected with led drive circuit are arranged in inside and outside the capping; Radiating block is a segment type material, and along the profile length direction, diverse location has identical cross section, and the cross section of section bar two recess, two prominent positions round by one and that be arranged on the circumference are formed; Two recess are symmetrical arranged along a diameter of circle, and two recess extend along the profile length direction, form two grooves; Two prominent positions are symmetrical arranged along a diameter of circle, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the cross-sectional periphery direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; Heat dissipating ring also is a segment type material, and along the profile length direction, diverse location has identical cross section, and section bar has heat conducting wall cylindraceous; The surface is provided with the heat radiation wing outside the heat conducting wall, and the heat radiation wing along the circumferential direction evenly distributes at the heat conducting wall outer surface, and the wing that respectively dispels the heat is highly equal; The surface has two recess within the heat conducting wall, and two recess are symmetrical arranged in opposite directions and along a diameter, and two recess extend along the profile length direction, form two grooves; The surface has two prominent positions within the heat conducting wall, and two prominent positions are symmetrical arranged in opposite directions and along a diameter, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the heat conducting wall circumferencial direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; One two-sided reflecting piece is set in the body, and two-sided reflecting piece is arranged between two LED illuminators; Two light reflecting piece are arranged on the symmetrical centre of two LED illuminators; Two-sided reflecting piece has the reflective sphere that two parallel reflective planes can two projections.

10. LED fluorescent lamp according to claim 1 is characterized in that, the LED fluorescent lamp also comprises two reflectors, and two reflectors are arranged on two ends of body, and the reflective surface of reflector is provided with in opposite directions; Two LED illuminators are separately positioned on the bottom centre of reflector; The LED illuminator is arranged on the aluminium base, and the aluminium base front has insulating barrier and printed circuit, and the aluminium base reverse side is provided with radiating block, and aluminium base is connected by securing member with radiating block, and the end face of radiating block contacts with aluminium base formation face; Radiating block also is provided with heat dissipating ring outward, and heat dissipating ring is sheathed on outside the radiating block with interference fit; Also be provided with led drive circuit in the hole of heat dissipating ring, led drive circuit is electrically connected the printed circuit of aluminium base; The combination of aluminium base, radiating block, heat dissipating ring snaps onto the end of body by end cap; The other end in the hole of heat dissipating ring is provided with capping, and two strip electrodes that are electrically connected with led drive circuit are arranged in inside and outside the capping; Radiating block is a segment type material, and along the profile length direction, diverse location has identical cross section, and the cross section of section bar two recess, two prominent positions round by one and that be arranged on the circumference are formed; Two recess are symmetrical arranged along a diameter of circle, and two recess extend along the profile length direction, form two grooves; Two prominent positions are symmetrical arranged along a diameter of circle, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the cross-sectional periphery direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; Heat dissipating ring also is a segment type material, and along the profile length direction, diverse location has identical cross section, and section bar has heat conducting wall cylindraceous; The surface is provided with the heat radiation wing outside the heat conducting wall, and the heat radiation wing along the circumferential direction evenly distributes at the heat conducting wall outer surface, and the wing that respectively dispels the heat is highly equal; The surface has two recess within the heat conducting wall, and two recess are symmetrical arranged in opposite directions and along a diameter, and two recess extend along the profile length direction, form two grooves; The surface has two prominent positions within the heat conducting wall, and two prominent positions are symmetrical arranged in opposite directions and along a diameter, and extend along the profile length direction two prominent positions, forms two lug, nibs; Two recess and two prominent settings of on the heat conducting wall circumferencial direction, staggering; Two prominent positions also have a thread Pilot hole along the setting of profile length direction respectively; One two-sided reflecting piece is set in the body, and two-sided reflecting piece is arranged between two LED illuminators; Two light reflecting piece are arranged on the symmetrical centre of two LED illuminators; Two-sided reflecting piece has the reflective sphere that two parallel reflective planes can two projections.