CN102635789B - LED (light emitting diode) fluorescent tube - Google Patents
LED (light emitting diode) fluorescent tube Download PDFInfo
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- CN102635789B CN102635789B CN201110038628.7A CN201110038628A CN102635789B CN 102635789 B CN102635789 B CN 102635789B CN 201110038628 A CN201110038628 A CN 201110038628A CN 102635789 B CN102635789 B CN 102635789B
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- led
- lgp
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- light led
- fluorescent tube
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Abstract
The invention discloses an LED (light emitting diode) fluorescent tube. The LED fluorescent tube comprises a white light LED light source, a lamp plate, a long-strip-shaped heat dissipation backboard, a long-strip-shaped light dispersion lamp cover, a red light LED, a green light LED, a circuit and a long-strip-shaped light guide plate, wherein an LED is installed on the lamp plate, the lamp plate is installed on the long-strip-shaped heat dissipation backboard, the long-strip-shaped light dispersion lamp cover is arranged on the heat dissipation backboard and covers the white light LED, the circuit is used for adjusting the brightness of the red light LED and the green light LED, and the long-strip-shaped light guide plate can uniformly mix the light LED and a green light LED. The brightness ratio of the red light LED to the green light LED is adjusted when an LED lamp strip is manufactured, the ray sent by the white light LED is uniformly mixed and then is ejected through the light guide plate, the ray sent by the white light LED is reinforced or neutralized, and the LED fluorescent tube manufactured by the LED with colour temperature difference has same colour temperature; and the assembly manufacture of the white light LED with the colour temperature difference is used in manufacture, the cost is reduced, and the popularization of the LED fluorescent tube is facilitated.
Description
[technical field]
The present invention relates to lighting field, refer in particular to a kind of LED fluorescent tube.
[background technology]
LED (Light-emitting diode, light emitting diode) as a kind of luminescent device that directly converts electrical energy into visible ray and radiant energy, be widely regarded as top quality green light source of 21 century, it has a series of advantage, as low in operating voltage, power consumption is little, the life-span is long, and LED itself and manufacturing process are all pollution-free, stable and reliable for performance.Under the policy guide of energy-saving and emission-reduction, be widely used in lighting field.
LED fluorescent tube is in the market mainly such structure: the lamp plate that many white light LEDs are installed is fixed on the heat radiation backboard of a strip, at the transparent face mask by a strip, covers described white light LEDs and be arranged on heat radiation backboard.Wherein white light LEDs generally adopts blue chip to excite the method for gold-tinted fluorescent material to make, reason due to chip processing procedure, just there is difference in the light consistency of blue chip, simultaneously, in the encapsulation technology of LED, owing to joining the slight difference of glue with some glue, capital is caused with the colour temperature of a collection of LED inconsistent, for reach LED fluorescent tube colour temperature control and luminous evenly, must carry out to LED element the screening of finished product, only have same levels colour temperature LED could for combination, make light fixture, so just improved the cost of manufacture of LED fluorescent tube, make it cannot replace traditional tube.
[summary of the invention]
The object of the present invention is to provide a kind of cheap for manufacturing cost, colour temperature uniformity is high, the LED fluorescent tube that colour rendering is high.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of LED fluorescent tube, comprise white LED light source, the lamp plate of LED is installed, the strip heat radiation backboard of lamp plate is installed, be arranged on the strip astigmatism lampshade that covers described white light LEDs on heat radiation backboard, it is characterized in that: also include red-light LED and green light LED, for regulating and the fixing circuit of red-light LED and green light LED brightness ratio, LGP for strip that red-light LED and green light LED light are mixed, described LGP is arranged on heat radiation backboard, by strip astigmatism lampshade, covered together with white light LEDs.
In addition, the present invention can also make further improvements by the following technical programs:
In the middle of described LGP is arranged on, comprise front, the back side, two ends and both sides, white light LEDs is arranged on the both sides of LGP.
The back side that described red-light LED and green light LED can be arranged on LGP also can be arranged on the two ends of LGP, and while being arranged on the back side, ruddiness and green glow are injected from the back side of LGP respectively, and the front from LGP after LGP mixes is penetrated; While being arranged on two ends, ruddiness and green glow are injected in opposite directions from the two ends of LGP respectively, and the front from LGP after LGP mixes is penetrated.
Red-light LED and green light LED are separately positioned on the two ends at the LGP back side, the position of the corresponding red-light LED in the positive two ends of LGP and green light LED is provided with reflective inclined-plane, and ruddiness and green glow are reflected back from described reflective inclined-plane in LGP and from LGP is positive, penetrate mixing.
Described reflective inclined-plane is a minute surface.The incidence angle of reflective inclined-plane and red-light LED and green light LED forms total reflection angle, total reflection occurs on the reflective inclined-plane described in ruddiness and green glow are irradiated to and enter mixing in LGP.
The back side of described LGP can be set to reflective surface, and reflective surface is the reflector layer that is coated in the reflectorized material at the LGP back side or sticks on the LGP back side.The light that red-light LED and green light LED can be sent so all reflects, and increases the utilization rate of light, improves brightness.
The front of described LGP is also provided with light diffusion layer.Can make so the mixed light of ruddiness and green glow increase by LGP emittance area, can in fluorescent tube, better mix with the light of white light LEDs, make light-emitting uniformity best.
Beneficial effect of the present invention is: owing to having the present invention includes red-light LED and green light LED, regulate and the fixing circuit of red-light LED and green light LED brightness the LGP of the strip that red-light LED and green light LED light are mixed.In the production of LED fluorescent tube, by regulating the brightness ratio of red-light LED and green light LED, the light sending after LGP mixes, then reinforcement or in and the colour temperature of the light that sends of white light LEDs, guarantee to have the LED fluorescent tube that the LED of colour temperature difference produces and there is identical colour temperature.Can use the differentiated white light LEDs assembling of colour temperature tool to produce, reduce cost of material, and by suitable adjustment, can also improve colour rendering index and the qualification rate of fluorescent tube, be conducive to the extensively universal of LED fluorescent tube.
[accompanying drawing explanation]
Fig. 1 is the explosive view of LED fluorescent tube of the present invention.
Fig. 2 is the outside drawing of LED fluorescent tube of the present invention.
Fig. 3 is the disposition-plan of light-emitting component in the first embodiment of LED fluorescent tube of the present invention.
Fig. 4 is the cross-sectional view of the first embodiment of LED fluorescent tube of the present invention.
Fig. 5 is the position assumption diagram of LGP and red-light LED and green light LED in the first embodiment of the present invention.
Fig. 6 is red-light LED or the light propagation schematic diagram of green light LED in LGP in the present invention.
Fig. 7 is the schematic diagram of the second embodiment of LED fluorescent tube of the present invention.
Fig. 8 is the schematic diagram of the third embodiment of LED fluorescent tube of the present invention.
Fig. 9 is the improved schematic diagram of doing on LGP in the present invention.
[specific embodiment]
In order to further illustrate structure of the present invention, below in conjunction with accompanying drawing, be described in detail.
Referring to Fig. 1, Fig. 2, a kind of LED fluorescent tube of the present invention, include white LED light source 11, the lamp plate 2 of LED is installed, the heat radiation backboard 6 of the strip of lamp plate is installed, be arranged on the strip astigmatism face shield 5 that covers LED light-emitting component on heat radiation backboard, also comprise red-light LED 12, green light LED 13, regulates the circuit 4 of red-light LED and green light LED brightness, the LGP 3 that the light that red-light LED and green light LED are sent mixes.
Referring to Fig. 3, Fig. 4 and Fig. 5, heat radiation backboard 6 comprises the radiating fin at the back side and the installed surface 62 corresponding with radiating fin, installed surface central authorities are provided with the groove 61 of a strip, on groove 61, be fixed wtih lamp plate 2c, red-light LED 12 and green light LED 13 are installed on lamp plate 2c two ends, on lamp plate 2c, be provided with circuit, this circuit one end is connected with the circuit 4 of brightness adjusting, one end is connected with the lamp base of red-light LED and green light LED, the circuit 4 of brightness adjusting is two variable resistors, controlling respectively the electric current of red-light LED and green light LED, change variable-resistance resistance, just can change the brightness of corresponding red-light LED and green light LED.Red-light LED 12 and green light LED 13 are being placed LGP 3 above, LGP size matches with the groove of heat radiation backboard, so that LGP energy inlay card is in groove, LGP 3 includes the front 31 that light penetrates, the back side 32 with vis-a-vis, both ends of the surface 34a, 34b and two sides 33, at both ends of the surface 34a, on 34b, be provided with reflective inclined-plane 341a, 341b, this reflective inclined-plane is both ends of the surface and positive phase cross surface, the reflective inclined-plane 341a of the position of red-light LED 12 and green light LED 13 and LGP, 341b is corresponding, the light that they send is reflected back in LGP mixing and penetrates from the front 31 of LGP from reflective inclined-plane.On heat radiation backboard installed surface, be fixed wtih white light LEDs, white light LEDs has many, be divided into two groups of 11a and 11b, be installed on respectively on lamp plate 2a and 2b, lamp plate 2a and 2b are electrically connected to the white light LEDs being installed on it, and lamp plate 2a is connected with external power source by wire with 2b, lamp plate 2a is fixed on a side 62a of heat radiation backboard installed surface groove, and lamp plate 2b is fixed on the opposite side 62b of heat radiation backboard installed surface groove.The astigmatic face shield 5 of one strip is also installed on the installed surface of heat radiation backboard 6; be covered with described LGP 3, lamp plate 2 and white light LEDs 11 thereof; with protection white light LEDs and other element, also have mixed white light LED light and from the irradiant function of LGP and a function of beautifying product simultaneously.The two ends of heat radiation backboard 6 and astigmatic face shield 5 also have the plug 7 that is connected external power source, to facilitate the installation of fluorescent tube.
Referring to Fig. 6, for red-light LED in the present invention or green light LED, the light in LGP is propagated schematic diagram.The Ray Of Light a sending from red-light LED or green light LED incides the reflective inclined-plane 341 of LGP, be reflected back toward in LGP, this reflection ray is b, light b arrives the back side 32 of LGP, again reflect to form reflection ray c, light c propagates into the front of LGP, part light reflects at place, front, form refracted ray d, a part is reflected in addition, forms light e, light e is reflected at the LGP back side, form light f, so carry out, this bundle light is just evenly dispersed through LGP.
Referring to Fig. 7, for the second embodiment of the present invention, red-light LED 12 and green light LED 13 are arranged on the centre at the LGP back side, ruddiness and the green glow front from LGP from mixing is injected at the LGP back side is injected, in the relevant position of placing red-light LED 12 and green light LED 13, can do simple process, this simple process can be on the LGP back side, to leave the groove that holds ruddiness and green light LED.
Referring to Fig. 8, for the third embodiment of the present invention, red-light LED 12 and green light LED 13 are arranged at both ends of the surface 34a and the 34b of LGP, and the light that red-light LED and green light LED send is injected in opposite directions from the two ends of LGP respectively, and the front 31 from LGP after LGP mixes is penetrated.
In addition, the present invention can also do following improvement:
Referring to Fig. 9, in order to increase light in the reflected intensity at the LGP back side, the place of the LGP back side 32 beyond installation red-light LED and green light LED is set to reflective surface, this reflective surface can be at LGP backside coating one deck reflectorized material, can be also at the LGP back side, to paste reflector layer 321.In order to increase red-light LED and green light LED light by the light-emitting uniformity after LGP, in the front 31 of LGP, be also provided with light diffusion layer 311.
The reflective inclined-plane 341 of LGP forms total reflection angle with the incidence angle of red-light LED and green light LED, and ruddiness and green glow are irradiated to and on described reflective inclined-plane, total reflection occur and enter mixed light in LGP.
In addition, in this invention, the circuit of described adjusting and fixedly red-light LED and green light LED brightness, can also be the control circuit with corresponding function.
The foregoing is only preferred embodiment of the present invention, protection scope of the present invention is not limited to this, within any equivalent transformation based in technical solution of the present invention all belongs to protection domain of the present invention.
Claims (9)
1. a LED fluorescent tube, it comprises white LED light source, the lamp plate of LED is installed, the strip heat radiation backboard of lamp plate is installed, be arranged on the strip astigmatism lampshade that covers described white light LEDs on heat radiation backboard, it is characterized in that, also include red-light LED and green light LED, for regulating the circuit of red-light LED and green light LED brightness, LGP for strip that red-light LED and green light LED light are mixed, described LGP is arranged on heat radiation backboard, by the astigmatic lampshade of strip, covered together with white light LEDs, described LGP is provided with reflective inclined-plane, ruddiness and green glow are reflected back from described reflective inclined-plane in LGP and from LGP is positive, penetrate mixed light.
2. LED fluorescent tube as claimed in claim 1, is characterized in that, in the middle of described LGP is arranged on, comprises front, the back side, two ends and both sides; Described white light LEDs is arranged on the both sides of LGP.
3. LED fluorescent tube as claimed in claim 2, is characterized in that, described red-light LED and green light LED are arranged at the back side of LGP, and ruddiness and green glow are injected from the back side of LGP respectively, and the front from LGP after LGP mixed light is penetrated.
4. LED fluorescent tube as claimed in claim 3, it is characterized in that, described red-light LED and green light LED are separately positioned on the two ends at the LGP back side, the position of the corresponding red-light LED in the positive two ends of LGP and green light LED is provided with reflective inclined-plane, ruddiness and green glow are reflected back from described reflective inclined-plane in LGP and from LGP is positive, penetrate mixed light, and described heat radiation backboard comprises installed surface.
5. LED fluorescent tube as claimed in claim 4, is characterized in that, described reflective inclined-plane is a minute surface.
6. LED fluorescent tube as claimed in claim 5, is characterized in that, described reflective inclined-plane and the incidence angle of red-light LED and green light LED form total reflection angle, and ruddiness and green glow are irradiated to the full transmitting of generation on described reflective inclined-plane and enter mixed light in LGP.
7. the LED fluorescent tube as described in claim 2 to 6 any one, is characterized in that, the back side of described LGP is set to reflective surface.
8. LED fluorescent tube as claimed in claim 7, is characterized in that, described reflective surface is the reflector layer that is coated in the reflectorized material at the LGP back side or sticks on the LGP back side.
9. the LED fluorescent tube as described in claim 2 to 6 any one, is characterized in that, the front of described LGP is also provided with light diffusion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110038628.7A CN102635789B (en) | 2011-02-10 | 2011-02-10 | LED (light emitting diode) fluorescent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110038628.7A CN102635789B (en) | 2011-02-10 | 2011-02-10 | LED (light emitting diode) fluorescent tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102635789A CN102635789A (en) | 2012-08-15 |
| CN102635789B true CN102635789B (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110038628.7A Expired - Fee Related CN102635789B (en) | 2011-02-10 | 2011-02-10 | LED (light emitting diode) fluorescent tube |
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| Country | Link |
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| CN (1) | CN102635789B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256504A (en) * | 2013-04-22 | 2013-08-21 | 中山市科业电子科技有限公司 | Plastic LED tube |
| CN104235633B (en) * | 2013-06-14 | 2017-04-26 | 展晶科技(深圳)有限公司 | Led lamp |
| CN104879716B (en) * | 2014-02-28 | 2021-05-04 | 林万炯 | Strip-shaped lamp and mounting method thereof |
| TW201600801A (en) * | 2014-06-26 | 2016-01-01 | Ahc Global Co Ltd | Low voltage driven LED lamp tube |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1215735A1 (en) * | 2000-12-13 | 2002-06-19 | Chao-Chin Yeh | Improved structure of lamp |
| CN101324308A (en) * | 2007-06-11 | 2008-12-17 | 精碟科技股份有限公司 | Illumination device |
| CN201339905Y (en) * | 2008-11-15 | 2009-11-04 | 和谐光电科技（泉州）有限公司 | LED radiating module and LED lamp with high heat dissipation |
| CN101725936A (en) * | 2008-10-30 | 2010-06-09 | 富准精密工业(深圳)有限公司 | Light-emitting diode lamp |
| CN202024130U (en) * | 2011-02-10 | 2011-11-02 | 鹤山市银雨照明有限公司 | LED fluorescent lamp tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06349451A (en) * | 1993-06-03 | 1994-12-22 | Fujitsu Ltd | Light source and liquid crystal display using it |
-
2011
- 2011-02-10 CN CN201110038628.7A patent/CN102635789B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1215735A1 (en) * | 2000-12-13 | 2002-06-19 | Chao-Chin Yeh | Improved structure of lamp |
| CN101324308A (en) * | 2007-06-11 | 2008-12-17 | 精碟科技股份有限公司 | Illumination device |
| CN101725936A (en) * | 2008-10-30 | 2010-06-09 | 富准精密工业(深圳)有限公司 | Light-emitting diode lamp |
| CN201339905Y (en) * | 2008-11-15 | 2009-11-04 | 和谐光电科技（泉州）有限公司 | LED radiating module and LED lamp with high heat dissipation |
| CN202024130U (en) * | 2011-02-10 | 2011-11-02 | 鹤山市银雨照明有限公司 | LED fluorescent lamp tube |
Non-Patent Citations (1)
| Title |
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| JP特开平6-349451A 1994.12.22 * |
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| CN102635789A (en) | 2012-08-15 |
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