CN201054344Y - Reflective cold cathode lamp tube - Google Patents
Reflective cold cathode lamp tube Download PDFInfo
- Publication number
- CN201054344Y CN201054344Y CNU2007200395247U CN200720039524U CN201054344Y CN 201054344 Y CN201054344 Y CN 201054344Y CN U2007200395247 U CNU2007200395247 U CN U2007200395247U CN 200720039524 U CN200720039524 U CN 200720039524U CN 201054344 Y CN201054344 Y CN 201054344Y
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- CN
- China
- Prior art keywords
- cold cathode
- tube
- fluorescent lamp
- cathode fluorescent
- light
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The utility model provides a reflection type cold cathode lamp tube, which comprises a glass tube (101) and inducing substance sealed in the glass tube (101), a first electrode component (102) and a second electrode component (103) which are respectively positioned at two ends of the glass tube (101), a fluorescent layer (105) coated on the surface of the inner wall of the glass tube (101), and also arc-shaped reflective coating (106) coated on the surface of the outer wall of the glass tube (101); the radian of the arc is smaller than 360 DEG. When the lamp tube is communicated with a power supply and the radiant energy is absorbed, fluorescent powder emits visible light, after the visible light is reflected by the reflective coating, the light diffused all around by the visible light is transformed to be relatively centralized light, and can be centralized to the part not being coated with the reflective coating, thus the light energy can be more effectively collected, thereby improving the light utilization rate and achieving the aim of energy conservation.
Description
Technical field
The utility model relates to a kind of fluorescent tube, relates in particular to a kind of cold cathode fluorescent lamp that can improve the utilance of light.
Background technology
At present, the liquid crystal material of no self-luminous character has been widely used on the LCD as different sizes such as TV, computer screen, crystal projection, mobile phone and personal digital assistants, in order to reach the purpose of developing, the light source of must arranging in pairs or groups comes irradiating liquid crystal.Because light source generally places the back of liquid crystal panel, so be called backlight.Backlight is generally selected light-emitting diode or cold cathode fluorescent lamp for use.Because light-emitting diode is owing to luminance shortage needs several light-emitting diode point-source of lights of assembling, the brightness that cold cathode fluorescent lamp but can provide the LCD of virtually any size to need is still the most common light source of back lighting so far.
The structure of the cold cathode fluorescent lamp of prior art is made up of a glass-tube, pair of electrodes group and fluorescence coating, wherein, fluorescence coating is coated on the inner wall surface of glass-tube, and group of motors is disposed at the two ends of glass-tube, and is electrically connected with a power supply, in addition, suitable mercuryvapour and the inert gas of the inner injection of glass-tube.When the electrode group is electrically connected with power supply, mercuryvapour is excited to excite state, return ground state immediately, when mercuryvapour is got back to ground state again, can give off energy with the form that discharges a large amount of ultraviolet lights, when the ultraviolet light that mercuryvapour discharged is beaten fluorescence coating on the inner tubal wall surface of glass-tube, send visible light behind the fluorescent material absorbed radiation energy, thereby reach luminous purpose.But because in the process of cold cathode fluorescent lamp irradiating liquid crystal, the just cold cathode fluorescent lamp that plays radiation is in the face of the part of LCD, do not work back to the part of LCD, therefore wasted part luminous energy, makes that the utilance of light is not high.
Summary of the invention
The purpose of this utility model is to provide a kind of reflective cold cathode fluorescent lamp, can overcome the not high defective of utilance of light in the prior art, reaches the purpose of the utilance that improves light.
For reaching above-mentioned technical purpose, the technical solution adopted in the utility model is: this reflective cold cathode fluorescent lamp comprises glass-tube, seals up for safekeeping in the evocating substance of described glass-tube inside; Lay respectively at first electrode assemblie and second electrode assemblie at described glass-tube two ends; Be coated in the fluorescence coating of described glass-tube inner wall surface, this reflective cold cathode fluorescent lamp also further comprises the arc reflectance coating of the outer wall surface that is coated on described glass-tube, and the radian of described arc is less than 360 degree;
Preferably, the radian of described arc reflectance coating is 180 degree;
Preferably, described arc reflectance coating is positioned at described first electrode assemblie and second electrode assemblie zone in addition;
Preferably, reflectance coating is a metal film;
Preferably, reflectance coating is the aluminium film;
Preferably, reflectance coating is a silverskin.
Because the outer surface of glass-tube of the present utility model is coated with the arc reflectance coating, and the radian of this arc is less than 360 degree, so when this fluorescent tube with after power supply is electrically connected, behind the fluorescent material absorbed radiation energy, sent visible light, this visible light is through after the reflection of reflectance coating, visible light by to around the light dispersed change the light of concentrating relatively into, can concentrate on the part of uncoated reflectance coating, thus can more effective collection luminous energy, thereby improved the utilance of light, and then reached purpose of energy saving;
In a preferred embodiment of the present utility model, because the radian of arc reflectance coating is 180 degree, thus can more effective collection luminous energy, thus the more effective utilance that improves light;
In a preferred embodiment of the present utility model, because the arc reflectance coating is positioned at the zone beyond described first electrode assemblie and second electrode assemblie, so the scattering of first electrode assemblie and second electrode assemblie is good, life-span that can fluorescent tube.
In a preferred embodiment of the present utility model because reflectance coating is aluminium film or silverskin, and aluminium film or silverskin can make light loss still less, thereby make that this cold cathode fluorescent lamp can more effective collection luminous energy, improve the utilance of light.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a cross-sectional view of the present utility model.
Embodiment
As shown in Figure 1, the reflective cold cathode fluorescent lamp that the utility model provides comprises glass-tube 101, seals up for safekeeping in the evocating substance of described glass-tube 101 inside; Lay respectively at first electrode assemblie 102 and second electrode assemblie 103 at described glass-tube 101 two ends; Be coated in the fluorescence coating 105 of described glass-tube 101 inner wall surface, this reflective cold cathode fluorescent lamp also further comprises the arc reflectance coating 106 of the outer wall surface that is coated on described glass-tube 101, and the radian of described arc is less than 360 degree; Arc reflectance coating 106 is positioned at the zone beyond described first electrode assemblie 102 and second electrode assemblie 103; The radian of arc reflectance coating 105 is 180 degree;
As shown in Figure 2, glass-tube 101 is cylindrical, and glass-tube 101 inner wall surface are coated with fluorescence coating 105, and glass-tube 101 outer wall surface are coated with arc reflectance coating 106.
Wherein, reflectance coating 105 is aluminium film or silverskin, and evocating substance is inert gas and mercury; Fluorescence coating 105 is a rare earth three-wavelength fluorescent material.
Claims (9)
1. a reflective cold cathode fluorescent lamp comprises glass-tube (101), seals up for safekeeping in the inner evocating substance of described glass-tube (101); Lay respectively at first electrode assemblie (102) and second electrode assemblie (103) at described glass-tube (101) two ends; Be coated in the fluorescence coating (105) of described glass-tube (101) inner wall surface, it is characterized in that, this reflective cold cathode fluorescent lamp also further comprises the arc reflectance coating (106) of the outer wall surface that is coated on described glass-tube (101), and the radian of described arc is less than 360 degree.
2. reflective cold cathode fluorescent lamp as claimed in claim 1 is characterized in that, described glass-tube (101) is cylindrical.
3. reflective cold cathode fluorescent lamp as claimed in claim 1 is characterized in that, the radian of described arc reflectance coating (106) is 180 degree.
4. reflective cold cathode fluorescent lamp as claimed in claim 1 is characterized in that, described arc reflectance coating (106) is positioned at described first electrode assemblie (102) and second electrode assemblie (103) zone in addition.
5. as claim 1 or 3 described reflective cold cathode fluorescent lamp, it is characterized in that described reflectance coating (105) is a metal film.
6. reflective cold cathode fluorescent lamp as claimed in claim 5 is characterized in that, described reflectance coating (105) is the aluminium film.
7. reflective cold cathode fluorescent lamp as claimed in claim 5 is characterized in that, described reflectance coating (105) is a silverskin.
8. reflective cold cathode fluorescent lamp as claimed in claim 1 is characterized in that, described evocating substance is inert gas and mercury.
9. reflective cold cathode fluorescent lamp as claimed in claim 1 is characterized in that, described fluorescence coating (105) is a rare earth three-wavelength fluorescent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200395247U CN201054344Y (en) | 2007-06-08 | 2007-06-08 | Reflective cold cathode lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200395247U CN201054344Y (en) | 2007-06-08 | 2007-06-08 | Reflective cold cathode lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201054344Y true CN201054344Y (en) | 2008-04-30 |
Family
ID=39394004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200395247U Expired - Fee Related CN201054344Y (en) | 2007-06-08 | 2007-06-08 | Reflective cold cathode lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201054344Y (en) |
-
2007
- 2007-06-08 CN CNU2007200395247U patent/CN201054344Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20120608 |