CN102635789A - LED (light emitting diode) fluorescent tube - Google Patents
LED (light emitting diode) fluorescent tube Download PDFInfo
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- CN102635789A CN102635789A CN2011100386287A CN201110038628A CN102635789A CN 102635789 A CN102635789 A CN 102635789A CN 2011100386287 A CN2011100386287 A CN 2011100386287A CN 201110038628 A CN201110038628 A CN 201110038628A CN 102635789 A CN102635789 A CN 102635789A
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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 light and radiant energy; Extensively thought top quality green light source of 21 century, it has a series of advantage, and is low like operating voltage, power consumption is little, the life-span is long; And LED itself is all pollution-free, stable and reliable for performance with manufacturing process.Under the policy guide of energy-saving and emission-reduction, be widely used in the lighting field.
LED fluorescent tube in the market mainly is such structure: the lamp plate that many white light LEDs will be installed is fixed on the heat radiation backboard of a strip, the transparent face mask through a strip cover said white light LEDs and be installed in the heat radiation backboard on.Wherein white light LEDs generally adopts blue chip to excite the method for gold-tinted fluorescent material to make, because the chip processing procedure, just there is difference in the light consistency of blue chip; Simultaneously, in the encapsulation technology of LED, owing to join glue and the slight difference of putting glue; The capital is caused with the colour temperature of a collection of LED inconsistent, for the control that reaches LED fluorescent tube colour temperature and luminous evenly, must carry out the screening of finished product to the LED element; Have only the LED of same levels colour temperature just can be used for combination; Make light fixture, so just improved the cost of manufacture of LED fluorescent tube, make it can't 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 height, 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 comprises white LED light source; The lamp plate of LED is installed; The strip heat radiation backboard of lamp plate is installed, is installed in the strip astigmatism lampshade that covers said white light LEDs on the heat radiation backboard, it is characterized in that: also include red-light LED and green light LED; Be used to regulate and the fixing circuit of red-light LED and green light LED brightness ratio; The LGP of the strip that is used for mixing red-light LED and green light LED light, said LGP is installed on the heat radiation backboard and white light LEDs is covered by strip astigmatism lampshade together.
In addition, the present invention can also do further improvement through following technical scheme:
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 said red-light LED and green light LED can be arranged on LGP also can be arranged on the two ends of LGP, and when being arranged on the back side, ruddiness and green glow are injected from the back side of LGP respectively, mixes the front ejaculation of back from LGP through LGP; When being arranged on two ends, ruddiness and green glow are injected from the two ends of LGP respectively in opposite directions, 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 corresponding red-light LED in two ends, LGP front and green light LED is provided with reflective inclined-plane, and ruddiness and green glow mix the back from the positive ejaculation of LGP in described reflective inclined-plane reflected back LGP.
Described reflective inclined-plane is a minute surface.The incidence angle of reflective inclined-plane and red-light LED and green light LED forms the total reflection angle, and ruddiness and green glow shine and take place on the described reflective inclined-plane to mix in the total reflection entering LGP.
The back side of said 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.Can the light that red-light LED and green light LED send all be reflected like this, increase the utilization rate of light, improve brightness.
The front of said LGP also is provided with light diffusion layer.The mixed light of ruddiness and green glow is increased through the LGP emittance area, can be in fluorescent tube and the light better mixing of white light LEDs, make light-emitting uniformity best.
Beneficial effect of the present invention is:, 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 owing to the present invention includes red-light LED and green light LED.In the production of LED fluorescent tube; Through regulating the brightness ratio of red-light LED and green light LED; After the light that sends mixes through LGP, again reinforcement or in the colour temperature of the light that sends with white light LEDs, guarantee to have the LED fluorescent tube that the LED of colour temperature difference produces and have identical colour temperature.The white light LEDs assembling that can use colour temperature to have difference is produced, and has reduced cost of material, and through suitable adjustment, can also improve the colour rendering index and the qualification rate of fluorescent tube, helps extensively popularizing of LED fluorescent tube.
[description of drawings]
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 first kind of embodiment of LED fluorescent tube of the present invention.
Fig. 4 is the cross-sectional view of first kind of 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 first kind of embodiment of the present invention.
Fig. 6 is red-light LED or the light propagation sketch map of green light LED in LGP among the present invention.
Fig. 7 is the sketch map of second kind of embodiment of LED fluorescent tube of the present invention.
Fig. 8 is the sketch map of the third embodiment of LED fluorescent tube of the present invention.
Fig. 9 is the improved sketch map of being done on the LGP in the present invention.
[specific embodiment]
In order to further specify structure of the present invention, be described in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2, a kind of LED fluorescent tube of the present invention includes 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 installed in the strip astigmatism face shield 5 that covers the LED light-emitting component on the heat radiation backboard; Also comprise red-light LED 12; Green light LED 13 is regulated 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, and installed surface central authorities are provided with the groove 61 of a strip; On groove 61, fixing lamp plate 2c, red-light LED 12 and green light LED 13 are installed on the lamp plate 2c two ends, lamp plate 2c is provided with circuit; This circuit one end is connected with the circuit 4 of regulating brightness; One end is connected with the lamp base of red-light LED and green light LED, and the circuit 4 of regulating brightness is two variable resistors, is controlling the electric current of red-light LED and green light LED respectively; Change variable-resistance resistance, just can change the corresponding red-light LED and the brightness of green light LED.Red-light LED 12 with placing LGP 3 above the green light LED 13; The LGP size is complementary with the groove of heat radiation backboard so that LGP can inlay card in groove, LGP 3 includes the front 31 that light penetrates; With positive opposing backside surface 32; Both ends of the surface 34a, 34b and two sides 33, both ends of the surface 34a, 34b are provided with reflective inclined- plane 341a, 341b, and this reflective inclined-plane is both ends of the surface and positive crossing face; The position of red-light LED 12 and green light LED 13 is corresponding with reflective inclined-plane 341a, the 341b of LGP, and the light that they send mixes front 31 ejaculations of back from LGP in reflective inclined-plane reflected back LGP.Fixing white light LEDs on the heat radiation backboard installed surface; White light LEDs has many, is divided into two groups of 11a and 11b, is installed on respectively on lamp plate 2a and the 2b; Lamp plate 2a and 2b are electrically connected with the white light LEDs that is installed on it; And lamp plate 2a is connected with external power source through lead with 2b, and lamp plate 2a is fixed on the 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 also is installed on the installed surface of heat radiation backboard 6; Be covered with said 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 the 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 make things convenient for the installation of fluorescent tube.
Referring to Fig. 6, be red-light LED among the present invention or the light propagation sketch map of green light LED in LGP.The Ray Of Light a that sends from red-light LED or green light LED incides the reflective inclined-plane 341 of LGP, is reflected back toward in the LGP, and this reflection ray is b; Light b arrives the back side 32 of LGP, reflects to form reflection ray c once more, and light c propagates into the front of LGP; Part light reflects at the place, front, forms refracted ray d, and a part is reflected in addition; Form light e, light e is reflected at the LGP back side, forms light f; So carry out, this bundle light just is evenly dispersed through LGP.
Referring to Fig. 7; Be second kind of embodiment of the present invention; Red-light LED 12 and green light LED 13 are arranged on the centre at the LGP back side, and ruddiness and green glow are injected from the front of LGP after injecting from the LGP back side and mixing, 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; Be the third embodiment of the present invention; Red-light LED 12 and green light LED 13 are arranged at the 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 from the two ends of LGP respectively in opposite directions, 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 the reflected intensity of light at the LGP back side; The LGP back side 32 is set to reflective surface in the place of installing beyond red-light LED and the green light LED; This reflective surface can be to apply one deck reflectorized material at the LGP back side, also can be to paste reflector layer 321 at the LGP back side.In order to increase red-light LED and green light LED light, also be provided with light diffusion layer 311 in the front 31 of LGP through the light-emitting uniformity behind the LGP.
The reflective inclined-plane 341 of LGP forms the total reflection angle with the incidence angle of red-light LED and green light LED, and ruddiness and green glow shine mixed light in the total reflection entering LGP takes place on the said reflective inclined-plane.
In addition, in this invention, the described adjusting and the fixing circuit of red-light LED and green light LED brightness can also be the control circuits with corresponding function.
The above is merely preferred embodiment of the present invention, and protection scope of the present invention is not limited thereto, and anyly all belongs within the protection domain of the present invention based on the equivalent transformation on the technical scheme of the present invention.
Claims (10)
1. LED fluorescent tube, it comprises white LED light source, and the lamp plate of LED is installed; The strip heat radiation backboard of lamp plate is installed; Be installed in the strip astigmatism lampshade that covers said white light LEDs on the heat radiation backboard, it is characterized in that, also include red-light LED and green light LED; Be used to regulate the circuit of red-light LED and green light LED brightness; The LGP of the strip that is used for red-light LED and green light LED light are mixed, said LGP is installed on the heat radiation backboard and white light LEDs is covered by the astigmatic lampshade of strip together.
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 said 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 behind the 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 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 in the described reflective inclined-plane reflected back LGP behind the mixed light from the ejaculation of LGP front.
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, the incidence angle of described reflective inclined-plane and red-light LED and green light LED forms the total reflection angle, and ruddiness and green glow shine mixed light in the total reflection entering LGP takes place on the described reflective inclined-plane.
7. LED fluorescent tube as claimed in claim 2 is characterized in that said red-light LED and green light LED are arranged at the two ends of LGP respectively, and ruddiness and green glow are injected from the two ends of LGP respectively in opposite directions, and the front from LGP behind the LGP mixed light is penetrated.
8. like each described LED fluorescent tube of claim 2 to 7, it is characterized in that the back side of said LGP is set to reflective surface.
9. LED fluorescent tube as claimed in claim 8 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.
10. like each described LED fluorescent tube of claim 2 to 7, it is characterized in that the front of said LGP also is 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 true CN102635789A (en) | 2012-08-15 |
| CN102635789B 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) |
Cited By (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 |
| CN104235633A (en) * | 2013-06-14 | 2014-12-24 | 展晶科技(深圳)有限公司 | Led lamp |
| CN104879716A (en) * | 2014-02-28 | 2015-09-02 | 林万炯 | Strip-shaped lamp and mounting method thereof |
| CN105276390A (en) * | 2014-06-26 | 2016-01-27 | 锜安国际有限公司 | LED lamp tube capable of being driven by low voltage |
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| JPH06349451A (en) * | 1993-06-03 | 1994-12-22 | Fujitsu Ltd | Light source and liquid crystal display using it |
| 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 |
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2011
- 2011-02-10 CN CN201110038628.7A patent/CN102635789B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| 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 |
Cited By (5)
| 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 |
| CN104235633A (en) * | 2013-06-14 | 2014-12-24 | 展晶科技(深圳)有限公司 | Led lamp |
| CN104879716A (en) * | 2014-02-28 | 2015-09-02 | 林万炯 | Strip-shaped lamp and mounting method thereof |
| CN104879716B (en) * | 2014-02-28 | 2021-05-04 | 林万炯 | Strip-shaped lamp and mounting method thereof |
| CN105276390A (en) * | 2014-06-26 | 2016-01-27 | 锜安国际有限公司 | LED lamp tube capable of being driven by low voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102635789B (en) | 2014-11-26 |
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Granted publication date: 20141126 Termination date: 20170210 |