CN2674642Y - Local high brightness gas discharge lamp - Google Patents
Local high brightness gas discharge lamp Download PDFInfo
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- CN2674642Y CN2674642Y CN 200320103569 CN200320103569U CN2674642Y CN 2674642 Y CN2674642 Y CN 2674642Y CN 200320103569 CN200320103569 CN 200320103569 CN 200320103569 U CN200320103569 U CN 200320103569U CN 2674642 Y CN2674642 Y CN 2674642Y
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- Prior art keywords
- discharge lamp
- gas discharge
- fluorescent tube
- reflective membrane
- high light
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Abstract
The utility model discloses a local high brightness gas discharge lamp comprising a light tube, electrodes at the both sides of the light tube and gas filled in the light tube. The inner surface or the external surface of the light tube is covered with a reflecting film, and a window without reflecting film covered is left. The size of the window can be decided as the size of the irradiated region of an irradiated thing. Supplying local high brightness, the utility model effectively improves the efficiency of a gas-discharge lamp, increases the illumination intensity of the irradiated thing, effectively decreases the temperature of the light tube and perpetuate the service life of the light tube.
Description
Technical field
The utility model relates to a kind of lighting device, particularly a kind of Localized High Light Gas Discharge Lamp.
Background technology
Gaseous discharge lamp have two types a kind of be that gas directly discharges, another kind is that gas discharge fluorescence excitation material is luminous.
The direct discharge lamp of gas comprises metal gas that charges in the electrode, lamp of lamp tube ends and the inert gas of assisting discharge.When on the electrode during making alive, directly penetrate light with the corresponding characteristic spectrum of metal gas kind that charges into thereby will produce gas discharge, and when charging into the increased pressure of gas, luminescence spectrum can develop also to continuous spectrum.The direct discharge lamp of low-pressure gas has low pressure mercury lamp, low-pressure sodium lamp, cadmium lamp etc. usually, and the direct discharge lamp of gases at high pressure has high-pressure mercury lamp, high-pressure sodium lamp, xenon lamp etc. usually.
Gas discharge fluorescence excitation material electroluminescent lamp is provided with electrode in lamp tube ends usually, charges into mercury vapour, argon steam in the fluorescent tube; Also be coated with fluorescent material in this external fluorescent tube.When adding voltage on the electrode, mercury vapor discharge under the assistance of argon steam is launched the ultraviolet ray that wavelength is 253.7nm, just inspires visible light during the fluorescent material of these ultraviolet irradiations to tube wall.
In order to improve the brightness of the direct discharge lamp of gas, method commonly used is to strengthen the length and the diameter of fluorescent tube; Can also strengthen the pressure that charges into gas for high-voltage gas discharging light.
In order to improve the brightness of gas discharge fluorescence excitation material electroluminescent lamp, method commonly used also is to strengthen the length and the diameter of fluorescent tube; In addition, also to develop high efficiency aluminate-series blue fluorescent material and carbon nano-tube.
The processing technology more complicated of said method, and cost height.
In addition, a kind of local high-brightness fluorescent lamp pipe is disclosed in the patent of notification number CN-86 1 01905, different with conventional fluorescent is, this invention is reserved the netted clear glass that some are not coated with fluorescent material at the inner surface of tube, and the high intensity visible that the phosphor powder layer inner surface gives off just directly penetrates fluorescent tube by this transparent glass window.Because this part visible light is without the decay of phosphor powder layer, thereby the brightness meeting improves.Though the gaseous discharge lamp cost of this kind structure is cheaper, but, the raising of brightness is only owing to the decay of light without the fluorescent material on the tube inner wall obtains, thereby brightness improves not clearly, and fluorescent tube is still luminous to all directions, luminous uniformity is not fine, and manufacturing process is more complicated also.
Many science, technology and production occasion also do not require in extensively space acquisition illumination, but only require little zone of illumination, the zone of the strip that for example only throws light on.At this moment, if adopt above-mentioned common fluorescent tube, as shown in Figure 1, and the even directive all directions of the light of fluorescent tube 10, the illumination that the to be illuminated regional d of photographed object 20 obtains will be very low, thereby can not meet the demands.
Therefore for obtaining local high brightness, mostly on half area of fluorescent tube, be coated with aluminium reflector.Though this lamp can improve the luminosity in attached column space, the infrared ray in the lamp is difficult for transmission goes out, thereby has following defective: 1) the lamp internal gas pressure raises, and luminous efficiency reduces; 2) electrode temperature raises, and sputtering phenomenon increases the weight of, and electron emissivity reduces, and the fluorescent tube blackening is accelerated; 3) case temperature increases, and can disengage gas, even crystallization, luminescent properties is descended and the reduction of shell transparency.
The utility model content
For overcoming above-mentioned defective, the utility model provides a kind of Localized High Light Gas Discharge Lamp, and its part can produce the light of high brightness, thereby has effectively improved the efficient of gaseous discharge lamp, and effectively reduces lamp hole temperature, has kept the useful life of fluorescent tube.
For achieving the above object, the utility model adopts following technical scheme.
Localized High Light Gas Discharge Lamp of the present utility model comprises fluorescent tube, encloses gas in the fluorescent tube and the electrode that is arranged on lamp tube ends; Wherein for realizing the purpose of this utility model, be coated with reflective membrane at the inner surface of fluorescent tube, and a window that is not coated with reflective membrane is also left on the surface within it, the angle of cut of these window two edges and the fluorescent tube line of centres can be between 10 ° to 50 °; In addition, for simplifying manufacturing process of the present utility model, this reflective membrane preferably is coated in the outer surface of fluorescent tube, and leaves a window that is not coated with reflective membrane at its outer surface, and the angle of cut of the two edges of window and fluorescent tube center line equally can be between 10 ° to 50 °.
Reflective membrane in fluorescent tube outer surface or inner surface coating can be for example TiO of multilayer dielectricity cold light film
2And SiO
2Multilayer dielectric film, also can be ZnS and MgF
2Multilayer dielectric film, this reflective membrane only reflects useful spectrum, for example visible light, ultraviolet ray etc., and the useless spectrum of transmission, particularly infrared spectrum, thereby can reduce the temperature of fluorescent tube greatly.
The lamp tube shapes of Localized High Light Gas Discharge Lamp of the present utility model can be straight tubular, can be the arcuation tubular also, so that shine the local surfaces externally and internally of cylindrical photographed object and the local arcwall face on the plane.
Have following advantage according to Localized High Light Gas Discharge Lamp of the present utility model:
1, the utility model is coated with reflective membrane in the major part of fluorescent tube, but leave the window that a part is not coated with reflective membrane, can make light only penetrate after reflection from this window, improved about about 5 times of localized lighting brightness, increase the illumination efficiency of gaseous discharge lamp, overcome the defective of photographed object luminance shortage;
2, reflective membrane wherein preferably is coated in the fluorescent tube outer surface, has simplified manufacturing process;
3, reflective membrane only reflects useful spectrum and the useless spectrum of transmission, particularly infrared spectrum, can reduce the temperature of gaseous discharge lamp, prolongs its useful life;
4, with low cost, simple in structure.
Description of drawings
Figure 1 shows that the gaseous discharge lamp fluorescent tube radiation situation schematic diagram of prior art;
Figure 2 shows that Localized High Light Gas Discharge Lamp of the present utility model radiation situation schematic diagram;
Figure 3 shows that the structural representation of an embodiment of Localized High Light Gas Discharge Lamp of the present utility model;
Figure 4 shows that the structural representation of another embodiment of Localized High Light Gas Discharge Lamp of the present utility model;
Figure 5 shows that the radiation situation schematic diagram of two Localized High Light Gas Discharge Lamps of the present utility model.
Embodiment
Be elaborated to 5 pairs of preferred embodiments of the present utility model of accompanying drawing hereinafter with reference to accompanying drawing 2.
Figure 2 shows that radiation situation schematic diagram of the present utility model, as we know from the figure, the utility model comprises fluorescent tube 10, outer surface at fluorescent tube 10 is coated with one deck reflective membrane 12, wherein also leave the window 14 of a uncoated reflective membrane, the angle β of the two edges of this window 14 and the fluorescent tube line of centres can decide with the size of the need irradiation area d of photographed object 20 and the distance of gaseous discharge lamp and photographed object, generally between 10 ° to 50 °.This reflective membrane 12 also can be coated in the inner surface (not looking among the figure) of fluorescent tube 10, but manufacturing process is relatively complicated.
This reflective membrane 12 is multilayer dielectric reflective coating, for example TiO
2And SiO
2The cold light film of alternative coating, its working temperature allows to reach 1000 ℃; Also can be ZnS and MgF
2Alternative coating, its working temperature allows to reach 300 ℃.Therefore this reflective membrane 12 can be gone out the infrared spectrum transmission, greatly reduces the temperature of fluorescent tube 10, helps keeping of its useful life.These reflective membrane 12 vacuum available coating methods or dipping coating method manufacturing, the latter is with the organic solvent alcohol dissolving material that will plate for example; Fluorescent tube is immersed in this solvent then; Heat organic solvent afterwards, organic solvent evaporation is fallen; Last sintering is attached on the fluorescent tube.
Gaseous discharge lamp can be divided into gas directly discharge and the luminous two kinds of situations of gas discharge excitation fluorescent material, describes architectural feature of the present utility model in detail at above-mentioned two kinds of situations respectively below.
The Localized High Light Gas Discharge Lamp of directly discharging for gas is that example describes with the uviol lamp.Uviol lamp is to charge into mercury vapour in fluorescent tube 10, and apply reflective membrane 12 at the inner surface of fluorescent tube 10 or outer surface, leave a window 14 that is not coated with reflective membrane, when making alive on the electrode at fluorescent tube 10 two ends, the ultraviolet ray that mercury vapor discharge produces is penetrated from window 14 by reflective membrane reflection back, and infrared ray wherein can be gone out from reflective membrane 12 transmissions.The big I of adjusting window makes the suitable irradiation area d of acquisition on the photographed object 20.The uviol lamp of this kind structure can produce local high brightness, improved the efficient of uviol lamp, improved the illumination of the irradiation area d of photographed object 20 simultaneously, can be widely used in the check of the quality and the true and false of medical exposure and banknote, for example, in its material, be typically provided with fluoroscopic image, the ultraviolet light of Localized High Light Gas Discharge Lamp's emission of present embodiment for increasing the antiforge function of banknote material, but as seen the fluoroscopic image in the excitation material makes it, thereby can quality inspection, tell truth from falsehood.Compare with common uviol lamp, uviol lamp of the present utility model can provide the more high brightness in the required irradiation area, and heating is lower.
The luminous Localized High Light Gas Discharge Lamp of gas discharge fluorescence excitation material is that example describes with the fluorescent lamp.The inner surface of fluorescent lamp tube 10 scribbles fluorescent material, mercury gas in the fluorescent tube is discharged by two end electrodes, giving off the wavelength that is invisible to the naked eye is that 253.7nm is main ultraviolet ray, shine the fluorescent material on fluorescent tube 10 inwalls then, produce visible light, after this visible light passes through the reflection of the inner surface of fluorescent tube 10 or the reflective membrane 12 that outer surface applies, after useful visible light reflection, penetrate from the window 14 of uncoated reflective membrane 12, and reflective membrane 12 transmissions that useless spectrum wherein, particularly Infrared can apply from the outer wall of fluorescent tube 10 are gone out.The brightness of the visible light that penetrates from window 14 is very strong like this, the fluorescence of this high brightness is shone the appropriate area d of photographed object 20 by the big I of adjusting window 14.Improve the efficient of gaseous discharge lamp 10, strengthen the illumination of photographed object 20.
The gas that is filled in material on the gaseous discharge lamp inwall and the lamp can change, and for example, if only charge into mercury vapour in gaseous discharge lamp 10, can obtain the mercury lamp of local high brightness; If in fluorescent tube 10, charge into metal gas, can obtain the metalized lamp of local high brightness; If in gas discharge lamp tube 10, charge into inert gas, then can obtain the glow lamp of local high brightness; If on the inwall of fluorescent tube 10, coat the luminescent coating of fluorescent lamp, just can obtain the fluorescent lamp of high brightness.
Fig. 3 and the structural representation that is respectively other two kinds of embodiment of the present utility model shown in Figure 4.The utility model can also be the arcuation tubular except that being the form of straight pipe as shown in the figure, and this kind shape is convenient to shine the outer surface of cylindrical photographed object or the inner surface of annular object.For the fluorescent tube among Fig. 3 10, the window of its uncoated reflective membrane is opened in the inner surface of circular arc fluorescent tube 10, when being placed on cylindrical photographed object 20 in the circular arc fluorescent tube 10, can obtain the fluorescence of high brightness in the partial circle of cylindrical photographed object 20.
Equally for the pipe of the Localized High Light Gas Discharge Lamp among Fig. 4 10, the window of its uncoated reflective membrane is opened in the outer surface of fluorescent tube 10, when hollow cylinder photographed object 20 is enclosed within fluorescent tube 10 peripheral, can obtain the high-brightness light of partial circle at the medial surface of hollow cylinder photographed object 20.
Figure 5 shows that the schematic diagram that shines the same area d of same photographed object 20 with two Localized High Light Gas Discharge Lamps of the present utility model.As shown in the figure, adjust the position of window 14 of the uncoated reflective membrane 12 of gaseous discharge lamp 10, making the irradiate light that penetrates from window 14 is the zone of d to the width of photographed object 20; Equally, adjust the position of window 14a of the uncoated reflective membrane 12a of gaseous discharge lamp 10a, making the irradiate light that penetrates from window 14a is the same area of d to the same width of photographed object 20.Like this, can further improve the illumination of the field of illumination of photographed object 20.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (9)
1. Localized High Light Gas Discharge Lamp, comprise fluorescent tube, enclose gas in the described fluorescent tube and the electrode that is arranged on described lamp tube ends, it is characterized in that: be coated with reflective membrane on the inwall of described fluorescent tube, and also leave a window that is not coated with described reflective membrane within it on the wall.
2. Localized High Light Gas Discharge Lamp according to claim 1 is characterized in that:
Described reflective membrane also can be coated in the outer surface of described fluorescent tube, and leaves a window that is not coated with described reflective membrane at its outer surface.
3. Localized High Light Gas Discharge Lamp according to claim 1 and 2 is characterized in that: the angle of the two edges of described window and the described fluorescent tube line of centres is between 10 ° to 50 °.
4. Localized High Light Gas Discharge Lamp according to claim 1 and 2 is characterized in that: described reflective membrane is a multilayer dielectricity cold light film.
5. Localized High Light Gas Discharge Lamp according to claim 4 is characterized in that:
Described reflective membrane is the multilayer dielectric film of TiO2 and SiO2.
6. Localized High Light Gas Discharge Lamp according to claim 4 is characterized in that:
Described reflective membrane is ZnS and MgF
2Multilayer dielectric film.
7. Localized High Light Gas Discharge Lamp according to claim 1 and 2 is characterized in that: the shape of described gas discharge lamp tube can be straight tube shape also can be the arcuation tubular.
8. Localized High Light Gas Discharge Lamp according to claim 1 and 2 is characterized in that: the gas of enclosing in the described fluorescent tube can be mercury vapour, metal gas or inert gas.
9. Localized High Light Gas Discharge Lamp according to claim 1 and 2 is characterized in that: the inwall of described fluorescent tube can scribble phosphor powder layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320103569 CN2674642Y (en) | 2003-11-21 | 2003-11-21 | Local high brightness gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320103569 CN2674642Y (en) | 2003-11-21 | 2003-11-21 | Local high brightness gas discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674642Y true CN2674642Y (en) | 2005-01-26 |
Family
ID=34474138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320103569 Expired - Lifetime CN2674642Y (en) | 2003-11-21 | 2003-11-21 | Local high brightness gas discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674642Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777326A (en) * | 2019-05-14 | 2020-02-11 | 淮安亮谷光电科技有限公司 | Preparation method of semi-gold-plated high-reflection infrared heating hollow pipe |
-
2003
- 2003-11-21 CN CN 200320103569 patent/CN2674642Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777326A (en) * | 2019-05-14 | 2020-02-11 | 淮安亮谷光电科技有限公司 | Preparation method of semi-gold-plated high-reflection infrared heating hollow pipe |
| CN110777326B (en) * | 2019-05-14 | 2022-01-14 | 淮安亮谷光电科技有限公司 | Preparation method of semi-gold-plated high-reflection infrared heating hollow pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Inst. of Printing Science, Peolpe's Bank of China Assignor: China banknote printing and Minting Corporation Contract fulfillment period: 2008.11.11 to 2013.11.10 Contract record no.: 2008110000159 Denomination of utility model: Local high brightness gas discharge lamp Granted publication date: 20050126 License type: Exclusive license Record date: 20081205 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.11 TO 2013.11.10; CHANGE OF CONTRACT Name of requester: PEOPLE S BANK OF CHINA SCIENCE PRINTING TECHNOLOGY Effective date: 20081205 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131121 Granted publication date: 20050126 |