CN101182903A - Air discharge lamp (florescent lamp, CCFL) device - Google Patents
Air discharge lamp (florescent lamp, CCFL) device Download PDFInfo
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- CN101182903A CN101182903A CNA200610149142XA CN200610149142A CN101182903A CN 101182903 A CN101182903 A CN 101182903A CN A200610149142X A CNA200610149142X A CN A200610149142XA CN 200610149142 A CN200610149142 A CN 200610149142A CN 101182903 A CN101182903 A CN 101182903A
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- refractive body
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Abstract
The invention discloses a device of a gas discharge lamp (fluorescent lamp, CCFL), namely, a compact gas discharge lamp device which makes use of a paraboloid and a triangular face to reflect the light on the back of a lighting tube or enclosed by the lighting tube. The invention comprises a glisten (semi) sphere, a gas discharge lamp (fluorescent lamp, CCFL) tube, a ballast, lampholder parts and so on. The invention can make full use of the electrical energy to emit light, thereby improving the environmental illuminance .
Description
Technical field
The present invention relates to a kind of device of gas-discharge lamp, relate in particular to mechanical mechanism the light reflection of gas-discharge lamp device.
Background technology
We know in compact (making with gas discharge lamp tube) electricity-saving lamp, as in " 4U, 6U, 8U and double-helix energy-saving lamp ", the back side at fluorescent tube, light is stopped by fluorescent tube or is surrounded by fluorescent tube, and do not emit, the luminous efficiency of fluorescent tube is not fully utilized, and is that electric energy is not fully utilized yet, and is unfavorable for energy-conservation.
Summary of the invention
For addressing the above problem, the objective of the invention is to, the device of a kind of gas-discharge lamp (fluorescent lamp, CCFL) is provided, utilize parabolic next to the back side at fluorescent tube, the light that is stopped by fluorescent tube or surrounded by fluorescent tube, (fully) reflects fully, and it is very compact and low-cost that light fixture is accomplished.
For achieving the above object, the device of a kind of gas-discharge lamp provided by the invention (fluorescent lamp, CCFL) comprising:
Refractive body, described refractive body outer surface is manufactured with reflectorized material, and gas discharge lamp tube is installed in the outside of described refractive body, and Lighthead assembly is installed on the top of described refractive body;
Gas discharge lamp tube, gas discharge lamp tube are three-color fluorescent lamp or CCFL (cold cathode) fluorescent tube, and form along the spiral-shaped arrangement manufacturing of described refractive body outer surface; The two ends of described gas discharge lamp tube are fixed on (U type) disk that described refractive body top (lamp holder up) extends out, and described disk overlaps with Lighthead assembly and is connected;
Lighthead assembly comprises E40 or E27 or other lamp holders and connects the part of refractive body, and two electrodes of described E40 or E27 lamp holder are connected on the input of ballast; Or be directly connected in the two end electrodes of described gas discharge lamp tube;
Ballast, the inside of the described refractive body of packing into, the output line of ballast inserts in the two end electrodes of described gas discharge lamp tube, and the input line inserts in the Lighthead assembly; Or ballast is not installed in refractive body inside, and the electrode of described gas discharge lamp tube is connected with external ballast by the Lighthead assembly interface, and described ballast is installed in the outside of the device of gas-discharge lamp (fluorescent lamp, CCFL) as one whole;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature also is, described gas discharge lamp tube is the fluorescent tube of multistage U-shaped shape, the reflective cylinder of described refractive body, the fluorescent tube of described multistage U-shaped shape is arranged around reflective cylinder, and vertical with cylindrical base, the fluorescent tube of described multistage U-shaped shape is installed on (U type) disk that cylindrical base extends out, and described disk overlaps with described Lighthead assembly and is connected;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature also is, described gas discharge lamp tube is arranged by single-screw and is constituted, be the central authorities that an end of described gas discharge lamp tube is fixed on bottom, described refractive body surface (lamp holder is last), and go deep into the inside of described refractive body, described gas discharge lamp tube is done spiral-shaped arrangement along described refractive body surface, the other end of described gas discharge lamp tube is fixed on (U type) disk that described refractive body top extends out, and described disk overlaps with described Lighthead assembly and is connected; Its feature is that also described gas discharge lamp tube is made of double helix, promptly arranges gas discharge lamp tube two covers that constitute 180 degree that stagger by above-mentioned single-screw and forms; Or said fixing is at gas discharge lamp tube one end of refractive body bottom center, the bottom gas discharge lamp tube does not go deep into spheroid inside, but change the electrode of removing the gas discharge lamp tube two ends into, gas discharge lamp tube is welded to each other fuses, form the double helix gas discharge lamp tube, the two ends of described gas discharge lamp tube are fixed on (U type) disk that described refractive body top extends out, and described disk overlaps with described Lighthead assembly and is connected;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature also is, described gas discharge lamp tube is a toroidal, and by the gas discharge lamp tube of the described toroidal of a plurality of different sizes, forms around described refractive body outer surface;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature are that also described refractive body comprises following several shape: reflective (partly) spherosome; Reflective oval ball; Reflective cylinder; Reflective hemisphere adds reflective cylindrical compound body; Reflective cone; Reflective cone adds reflective cylindrical compound body; Reflective ball of excision all up and down; Reflective oval ball of excision all up and down; The reflective cone of top excision; Or the like;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature also is, described refractive body also comprises: along the gas discharge lamp tube direction, digging a cross section on described refractive body surface is parabolical reflective Cao, and the gas discharge lamp tube circular section just in time is positioned on the described parabolic focus; Its feature also is, go up reflective isosceles triangle of increase in described parabolical bottom (top), the summit of described reflective isosceles triangle towards the gas-discharge lamp tube side to, described parabola and described isosceles triangle form a resultant curve, along the gas discharge lamp tube direction, reflective Cao is dug on described refractive body surface as the cross section; Described reflective isoceles triangle body further reflects the light at the gas discharge lamp tube back side;
The Lighthead assembly of the device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature also is: open a wire hole on described lamp holder (without E40 or E27 lamp holder) parts, increase a hook or hook Cao, or increase a device that is used for other fixing described gas-discharge lamp (fluorescent lamp, CCFL) devices;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature are that also described Lighthead assembly also further extends a umbrella reflection shield, is used to reflect light up; Its feature is that also described Lighthead assembly also further extends a spherical light permeable protection, refractive body and gas-discharge lamp shroud is lived, or vacuumize in the cover;
Device based on above-mentioned gas-discharge lamp (fluorescent lamp, CCFL) provided by the invention, its feature also are, open louvre on described refractive body bottom and Lighthead assembly, or heat radiation Cao, are used for the ballast of refractive body inside is carried out heat loss through convection;
The device of another kind of gas-discharge lamp provided by the invention (fluorescent lamp, CCFL) comprising:
Refractive body is the cylinder that outer surface is manufactured with reflectorized material, and gas discharge lamp tube is installed in the outside of described refractive body, and Lighthead assembly is installed at the two ends of described refractive body; Described refractive body has reflective Cao in parabola cross section;
Gas discharge lamp tube, gas discharge lamp tube is three-color fluorescent lamp or CCFL (cold cathode) fluorescent tube, and form, or be parallel to described refractive body outer surface by many straight tube fluorescent lamps or CCFL (cold cathode) fluorescent tube and arrange and form along the spiral-shaped arrangement manufacturing of described refractive body outer surface; The two ends of described gas discharge lamp tube are separately fixed on (U type) disk that described refractive body two ends extend out, or G5 (or other) socket is installed on (U type) disk that described refractive body two ends extend out, described straight tube fluorescent lamp directly inserts in the described socket, and described disk overlaps with Lighthead assembly and is connected;
Lighthead assembly comprises G13 or G5E40 or E27 or other lamp holders and connects the part at described refractive body two, and the two end electrodes of described gas discharge lamp tube is connected on two electrodes of G13 or G5 or E40 or E27 lamp holder;
Or ballast, the inside of the described refractive body of packing into, the output line of ballast inserts in the two end electrodes of described gas discharge lamp tube, and the input line inserts in the Lighthead assembly;
The device of a kind of gas-discharge lamp of the present invention (fluorescent lamp, CCFL), it is a kind of compact, utilize and parabolicly to reflect fluorescent tube or the gas-discharge lamp device of the light that is surrounded by fluorescent tube behind, can make full use of electric energy and be used for outwards luminously, improve the illuminance of environment.
Description of drawings
The following drawings helps the detailed the present invention that understands, but only is to explain for example, should not be understood that limitation of the present invention.
Fig. 1 is first embodiment cross-sectional view of device of the present invention;
Fig. 2 is second embodiment cross-sectional view of device of the present invention;
Fig. 3 is the 3rd an embodiment cross-sectional view of device of the present invention;
Fig. 4 is the 4th an embodiment cross-sectional view of device of the present invention;
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.Following explanation will help those skilled in the art better to understand other advantages of the present invention, purpose and feature.
At first introduce first embodiment of device of the present invention, with reference to figure 1.The device 1 of gas-discharge lamp shown in Figure 1 (fluorescent lamp, CCFL), be used for illumination, device 1 is a kind of helical compact type fluorescent lamp (electricity-saving lamp), device 1 can be blocked fluorescent tube behind by fluorescent tube light, come out and be used with parabolic reflector, thus more energy-conservation; This device 1 mainly comprises: cylinder adds hemispheroidal refractive body 14, the spiral parabolic reflector face 12 that digs, single-screw formula fluorescent tube 15, Lighthead assembly 11, ballast 13 on cylinder 14; The output of ballast 13 inserts respectively in the two end electrodes of fluorescent tube 15, and input inserts in the Lighthead assembly 11; Fluorescent lamp tube 15 is installed on (U type) disk that cylindrical base extends out, and described disk overlaps with Lighthead assembly 11 and is connected; Like this, gas-discharge lamp device 1 is when Lighthead assembly 11 inserts power circuits, by ballast 13, to drive fluorescent tube 15 luminous; Fluorescent tube 15 light behind makes the stranded light in fluorescent tube behind reflect the increase ambient light illumination by the reflex of triangular facet 16, and the light of fluorescent tube side-scattered makes also that through the optically focused effect of parabolic reflector face 12 ambient light illumination further increases in addition.
Second embodiment of device of the present invention is with reference to figure 2.The device 2 of gas-discharge lamp shown in Figure 2 (fluorescent lamp, CCFL), be used for illumination, device 2 is a kind of spherical compact fluorescent lamps (electricity-saving lamp), and device 2 can be blocked fluorescent tube behind or be come out and be used with parabolic reflector by the light that fluorescent tube surrounds by fluorescent tube, thereby more energy-conservation; This device 2 mainly comprises: the refractive body 25 of spheroid, the spiral parabolic reflector face 23 that digs on spheroid 25, single-screw formula fluorescent tube 24, Lighthead assembly 21, ballast 22; The output of ballast 22 inserts respectively in the two end electrodes of fluorescent tube 24, and input inserts in the Lighthead assembly 21; Fluorescent lamp tube 24 is installed on (U type) disk that cylindrical base extends out, and described disk overlaps with Lighthead assembly 21 and is connected; Like this, gas-discharge lamp device 2 is when Lighthead assembly 21 inserts power circuits, by ballast 22, to drive fluorescent tube 24 luminous; Fluorescent tube 24 light behind makes the stranded light in fluorescent tube behind reflect the increase ambient light illumination by the reflex of triangular facet 26, and the light of fluorescent tube side-scattered makes also that through the optically focused effect of parabolic reflector face 23 ambient light illumination further increases in addition.
The 3rd embodiment of device of the present invention is with reference to figure 3.The device 3 of gas-discharge lamp shown in Figure 3 (fluorescent lamp, CCFL), be used for illumination, device 3 is a kind of straight tube shape spiral fluorescent lamps, and device 3 can be blocked fluorescent tube behind and be come out and be used with parabolic reflector by the light that fluorescent tube surrounds by fluorescent tube, thereby more energy-conservation; This device 3 mainly comprises: cylindrical refractive body 34, the spiral parabolic reflector face 32 that digs on cylinder 34, single-screw formula fluorescent tube 33, Lighthead assembly 31 and 35; Single-screw formula fluorescent tube 33; The electrode at fluorescent tube 33 two ends inserts Lighthead assembly 31 and 35 respectively; Fluorescent lamp tube 33 is installed on (U type) disk that cylindrical base extends out, and described disk overlaps with 35 with Lighthead assembly 31 and is connected; Like this, gas-discharge lamp device 3, when Lighthead assembly 31 and 35 inserts the support of band ballasts, and when connecting power supply, luminous by the ballast driven fluorescent tube 33 on the support; Fluorescent tube 33 light behind is by the reflex of triangular facet 36, make fluorescent tube stranded behind and reflected the increase ambient light illumination by the light that fluorescent tube surrounds, the light of fluorescent tube side-scattered makes also that through the optically focused effect of parabolic reflector face 32 ambient light illumination further increases in addition.
The 4th embodiment of device of the present invention is with reference to figure 4.The device 4 of gas-discharge lamp shown in Figure 4 (fluorescent lamp, CCFL), be used for illumination, device 4 is a kind of 4U compact fluorescent lamps (electricity-saving lamp), and device 4 can be blocked fluorescent tube behind and be come out and be used with parabolic reflector by the light that fluorescent tube surrounds by fluorescent tube, thereby more energy-conservation; This device 4 mainly comprises: cylindrical refractive body 43, the parabolic reflector face 42 that digs on cylinder 43,4U fluorescent tube 41, ballast 44; The electrode at 4U fluorescent tube 41 two ends inserts respectively in the output of ballast 44, and 4U fluorescent tube 41 is installed on (U type) disk that cylindrical base extends out, and described disk overlaps with described Lighthead assembly and is connected; Like this, gas-discharge lamp device 4, when ballast 44 inserted power circuit by Lighthead assembly, it is luminous that ballast 44 drives fluorescent tube 41; Fluorescent tube 41 light behind is by the reflex of triangular facet 46, make fluorescent tube stranded behind and reflected the increase ambient light illumination by the light that fluorescent tube surrounds, the light of fluorescent tube side-scattered makes also that through the optically focused effect of parabolic reflector face 42 ambient light illumination further increases in addition.
The 5th embodiment of device of the present invention is with reference to figure 4.The device 4 of gas-discharge lamp shown in Figure 4 (fluorescent lamp, CCFL), be used for illumination, device 4 is a kind of light fixtures of being made up of 8 straight tube fluorescent lamps, and device 4 can be blocked fluorescent tube behind and be come out and be used with parabolic reflector by the light that fluorescent tube surrounds by fluorescent tube, thereby more energy-conservation; This device 4 mainly comprises: cylindrical refractive body 43, the parabolic reflector face 42 that digs on cylinder 43,4U fluorescent tube 41, ballast 44; The electrode at 4U fluorescent tube 41 two ends inserts respectively in the output of ballast 44, described 8 straight tube fluorescent lamp fluorescent tubes directly insert respectively on (G5) socket be installed on (U type) disk that cylindrical base extends out, described disk overlaps with described Lighthead assembly and is connected, like this, gas-discharge lamp device 4, when ballast 44 inserted power circuit by Lighthead assembly, it is luminous that ballast 44 drives fluorescent tube 41; Fluorescent tube 41 light behind is by the reflex of triangular facet 46, make fluorescent tube stranded behind and reflected the increase ambient light illumination by the light that fluorescent tube surrounds, the light of fluorescent tube side-scattered makes also that through the optically focused effect of parabolic reflector face 42 ambient light illumination further increases in addition.
The device of a kind of gas-discharge lamp of the present invention (fluorescent lamp, CCFL), it is a kind of compact, utilize and parabolicly to reflect fluorescent tube or the gas-discharge lamp device of the light that is surrounded by fluorescent tube behind, can make full use of electric energy and be used for outwards luminously, improve the illuminance of environment.
Claims (10)
1. the device of a gas-discharge lamp (fluorescent lamp, CCFL) comprising:
Refractive body, described refractive body outer surface is manufactured with reflectorized material, and gas discharge lamp tube is installed in the outside of described refractive body, and Lighthead assembly is installed on the top of described refractive body;
Gas discharge lamp tube, gas discharge lamp tube are three-color fluorescent lamp or CCFL (cold cathode) fluorescent tube, and form along the spiral-shaped arrangement manufacturing of described refractive body outer surface; The two ends of described gas discharge lamp tube are fixed on (U type) disk that described refractive body top (lamp holder up) extends out, and described disk overlaps with Lighthead assembly and is connected;
Lighthead assembly comprises E40 or E27 or other lamp holders and connects the part of refractive body, and two electrodes of described E40 or E27 lamp holder are connected on the input of ballast; Or be directly connected in the two end electrodes of described gas discharge lamp tube;
Ballast, the inside of the described refractive body of packing into, the output line of ballast inserts in the two end electrodes of described gas discharge lamp tube, and the input line inserts in the Lighthead assembly; Or ballast is not installed in refractive body inside, and the electrode of described gas discharge lamp tube is connected with external ballast by the Lighthead assembly interface, and described ballast is installed in the outside of the device of gas-discharge lamp (fluorescent lamp, CCFL) as one whole;
2. device based on the described gas-discharge lamp of claim 1 (fluorescent lamp, CCFL), its feature also is, described gas discharge lamp tube is the fluorescent tube of multistage U-shaped shape, the reflective cylinder of described refractive body, the fluorescent tube of described multistage U-shaped shape is arranged around reflective cylinder, and vertical with cylindrical base, the fluorescent tube of described multistage U-shaped shape is installed on (U type) disk that cylindrical base extends out, and described disk overlaps with described Lighthead assembly and is connected;
3. one kind based on claim 1 or 2 described gas-discharge lamp (fluorescent lamps, CCFL) device, its feature also is, described gas discharge lamp tube is arranged by single-screw and is constituted, be the central authorities that an end of described gas discharge lamp tube is fixed on bottom, described refractive body surface (lamp holder is last), and go deep into the inside of described refractive body, described gas discharge lamp tube is done spiral-shaped arrangement along described refractive body surface, the other end of described gas discharge lamp tube is fixed on (U type) disk that described refractive body top extends out, and described disk overlaps with described Lighthead assembly and is connected; Its feature is that also described gas discharge lamp tube is made of double helix, promptly arranges gas discharge lamp tube two covers that constitute 180 degree that stagger by above-mentioned single-screw and forms; Or said fixing is at gas discharge lamp tube one end of refractive body bottom center, the bottom gas discharge lamp tube does not go deep into spheroid inside, but change the electrode of removing the gas discharge lamp tube two ends into, gas discharge lamp tube is welded to each other fuses, form the double helix gas discharge lamp tube, the two ends of described gas discharge lamp tube are fixed on (U type) disk that described refractive body top extends out, and described disk overlaps with described Lighthead assembly and is connected;
4. device based on claim 1 or 2 or 3 described gas-discharge lamps (fluorescent lamp, CCFL), its feature also is, described gas discharge lamp tube is a toroidal, and by the gas discharge lamp tube of the described toroidal of a plurality of different sizes, forms around described refractive body outer surface;
5. device based on claim 1 or 2 or 3 or 4 described gas-discharge lamps (fluorescent lamp, CCFL), its feature is that also described refractive body comprises following several shape: reflective (partly) spherosome; Reflective oval ball; Reflective cylinder; Reflective hemisphere adds reflective cylindrical compound body; Reflective cone; Reflective cone adds reflective cylindrical compound body; Reflective ball of excision all up and down; Reflective oval ball of excision all up and down; The reflective cone of top excision; Or the like;
6. device based on claim 1 or 2 or 3 or 4 or 5 described gas-discharge lamps (fluorescent lamp, CCFL), its feature also is, described refractive body also comprises: along the gas discharge lamp tube direction, digging a cross section on described refractive body surface is parabolical reflective Cao, and the gas discharge lamp tube circular section just in time is positioned on the described parabolic focus; Its feature also is, go up reflective isosceles triangle of increase in described parabolical bottom (top), the summit of described reflective isosceles triangle towards the gas-discharge lamp tube side to, described parabola and described isosceles triangle form a resultant curve, along the gas discharge lamp tube direction, reflective Cao is dug on described refractive body surface as the cross section; Described reflective isoceles triangle body further reflects the light at the gas discharge lamp tube back side;
7. Lighthead assembly based on the device of claim 1 or 2 or 3 or 4 or 5 or 6 described gas-discharge lamps (fluorescent lamp, CCFL), its feature also is: open a wire hole on described lamp holder (without E40 or E27 lamp holder) parts, increase a hook or hook Cao, or increase a device that is used for other fixing described gas-discharge lamp (fluorescent lamp, CCFL) devices;
8. device based on claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described gas-discharge lamps (fluorescent lamp, CCFL), its feature is that also described Lighthead assembly also further extends a umbrella reflection shield, is used to reflect light up; Its feature is that also described Lighthead assembly also further extends a spherical light permeable protection, refractive body and gas-discharge lamp shroud is lived, or vacuumize in the cover;
9. device based on claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described gas-discharge lamps (fluorescent lamp, CCFL), its feature also is, on described refractive body bottom and Lighthead assembly, open louvre, or heat radiation Cao, be used for the ballast of refractive body inside is carried out heat loss through convection;
10. the device of a gas-discharge lamp (fluorescent lamp, CCFL) comprising:
Refractive body is the cylinder that outer surface is manufactured with reflectorized material, and gas discharge lamp tube is installed in the outside of described refractive body, and Lighthead assembly is installed at the two ends of described refractive body; Described refractive body has reflective Cao in parabola cross section;
Gas discharge lamp tube, gas discharge lamp tube is three-color fluorescent lamp or CCFL (cold cathode) fluorescent tube, and form, or be parallel to described refractive body outer surface by many straight tube fluorescent lamps or CCFL (cold cathode) fluorescent tube and arrange and form along the spiral-shaped arrangement manufacturing of described refractive body outer surface; The two ends of described gas discharge lamp tube are separately fixed on (U type) disk that described refractive body two ends extend out, or G5 (or other) socket is installed on (U type) disk that described refractive body two ends extend out, described straight tube fluorescent lamp directly inserts in the described socket, and described disk overlaps with Lighthead assembly and is connected;
Lighthead assembly comprises G13 or G5E40 or E27 or other lamp holders and connects the part at described refractive body two, and the two end electrodes of described gas discharge lamp tube is connected on two electrodes of G13 or G5 or E40 or E27 lamp holder;
Or ballast, the inside of the described refractive body of packing into, the output line of ballast inserts in the two end electrodes of described gas discharge lamp tube, and the input line inserts in the Lighthead assembly;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610149142XA CN101182903A (en) | 2006-11-14 | 2006-11-14 | Air discharge lamp (florescent lamp, CCFL) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610149142XA CN101182903A (en) | 2006-11-14 | 2006-11-14 | Air discharge lamp (florescent lamp, CCFL) device |
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| Publication Number | Publication Date |
|---|---|
| CN101182903A true CN101182903A (en) | 2008-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200610149142XA Pending CN101182903A (en) | 2006-11-14 | 2006-11-14 | Air discharge lamp (florescent lamp, CCFL) device |
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| CN (1) | CN101182903A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953178A (en) * | 2016-05-27 | 2016-09-21 | 大族激光科技产业集团股份有限公司 | Light gathering device of LED light and method forming light gathering device |
-
2006
- 2006-11-14 CN CNA200610149142XA patent/CN101182903A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953178A (en) * | 2016-05-27 | 2016-09-21 | 大族激光科技产业集团股份有限公司 | Light gathering device of LED light and method forming light gathering device |
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Open date: 20080521 |