CN85104715B - Incandescent lamp tube - Google Patents
Incandescent lamp tube Download PDFInfo
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- CN85104715B CN85104715B CN85104715A CN85104715A CN85104715B CN 85104715 B CN85104715 B CN 85104715B CN 85104715 A CN85104715 A CN 85104715A CN 85104715 A CN85104715 A CN 85104715A CN 85104715 B CN85104715 B CN 85104715B
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- index layer
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Abstract
The present invention relates to an incandescent lamp tube which comprises a layer of film which can be transmitted by visual light and can reflect infrared light. The film is composed of laminated layers alternately superimposed by high-refractivity layers and low-refractivity layers formed in at least one of an inner layer and an outer layer of a tubular transparent lamp, wherein the thickness range of a light film of any high-refractivity layers is from 0.21 to 0.31 micrometer, the thickness range of a light film of the low-refractivity layer on an uppermost layer is from 1/2*0.21 to 1/2*0.31 micrometer, the thickness range of a light film of at least one low-refractivity layer is from 2*0.21 to 2*0.31 micrometer, and the thickness range of a light film of any remaining low-refractivity layers is from 0.21 to 0.31 micrometer.
Description
What the present invention relates to is the structure that has improved the incandescent lamp tube of luminescence efficiency.
The inventor etc. once proposed a kind of tubular transparent incandescent lamp, it comprise one deck in inside and outside of fluorescent tube at least on the one side formed permission visible light see through and with the film of infrared reflection, this film is made up of the lamination that the layer with high and low different refractivity alternately stacks.Lamination is respectively titania (TiO
2) and silicon dioxide (SiO
2), this fluorescent tube also comprises a tungsten filament of vertically installing at its center.
The visible optical radiation of just sending from the filament of incandescent lamp tube just can be passed infrared reflection film, and thoroughly to outside, and infrared radiation is reflected by infrared reflection film, sends back to filament, makes the further heating of filament, has therefore improved significantly the efficient of incandescent lamp.
The infrared reflection film of this routine has formed in fact the interference light filter of 1/4 wavelength (entering), why like this design is for so that the maximum reflection wavelength enters consistent with the peak wavelength (about 1 micron) during infrared energy at filament distributes.
As a result, the luminescence efficiency of lamp is undesirable, since since quite high near the reflectivity of infrared radiation, so the transmissivity of visible light just is not enough to consider.
The purpose of this invention is to provide a kind of further incandescent lamp tube that improves luminescence efficiency, its means be strengthen simultaneously as much as possible the bulb outside and inboard arbitrary (or two sides) upper formed permission visible transmission and to the film of infrared reflection to ultrared reflectivity with to the transmissivity of visible light.
Main points of the present invention are all to be improved to the reflectivity of infrared light with to the transmissivity of visible light, its method is to rely on to form one group of high refractive index layer, every layer light film thickness scope is 0.21 to 0.31 micron, and one group of low-index layer, the light film thickness scope of its superiors is 1/2 * 0.21 to 1/2 * 0.31 micron, namely from 0.105 to 0.150 micron, wherein one deck is from 2 * 0.21 to 2 * 0.31 microns at least, namely from 0.42 to 0.62 micron, from 0.21 to 0.31 micron of all the other each layer.
Fig. 1 is that expression is according to vertical diagrammatic cross-sectional view of a kind of embodiment of incandescent lamp tube of the present invention.
Fig. 2 is the simple enlarged drawing according to the essential part of embodiment shown in Figure 1 or multilayer film.
Fig. 3 and Fig. 4 show respectively infrared reflection film light characteristic spectrum according to embodiment and the most preferred embodiment of the present invention of routine.
At length with reference to the most preferred embodiment according to " halogen " of the present invention lamp shown in Figure 1, (1) represents a straight transparency silica glass fluorescent tube now, and the visible light that (2) representative is formed on the outside surface of fluorescent tube (1) penetrates and infrared reflection film.
(3) and (3) each all represent lamp holder compacting and the hermetic unit of fluorescent tube (1), each all represents to be embedded in molybdenum lead foil in the hermetic unit (3) (4) and (4), each all represents to be inserted in the interior inner lead of fluorescent tube (1) (5) and (5).
(6) representative is connected across inner lead (5) and (5) and along the spiral tungsten filament of fluorescent tube (1) central shaft installation, (7) and (7) each all represent the support of filament supports (6), (8) and (8) each all represent the terminal that is installed in hermetic unit (3) end, and be connected on the lead foil (4), be full of inert gas and needed a certain amount of halogen material as argon gas in the lumiline lamp.
Represented such as Fig. 2, above-mentioned permission visible light sees through and the film of infrared reflection is made of many laminations, and wherein two kinds of different types of layers alternately are stacked: a kind of is high refractive index layer (2H), by such as titania (TiO
2), tantalum pentoxide (Ta
2O
5), zirconium dioxide (ZrO
2) or the such material formation of zinc sulphide (ZnS); Another kind is low-index layer (2L), by such as silicon dioxide (SiO
2) or magnesium fluoride (MgF
2) such material formation.
The light film thickness scope of each high refractive index layer (2H) is 0.21 to 0.31 micron.
The light film thickness scope of the low-index layer of the superiors (2L) is 1/2 * 0.21 to 1/2 * 0.31 micron, namely from 0.105 to 0.150 micron, the light film thickness scope that has one deck in the remainder layer at least is 2 * 0.21 to 2 * 0.31 microns, namely from 0.42 to 0.62 micron, arbitrary layer from 0.21 to 0.31 micron of light film thickness in the remainder layer.Additional disclosure, " light film thickness " refer to that actual film thickness value multiply by refractive index.
In order to form this infrared light reflecting film (2), at first must filament (6) and other hermetic units install and be sealed in fluorescent tube with inert gas needed a certain amount of halogen material after, discharge the air exist in the fluorescent tube.
In addition, also must prepare following two kinds of solution: a kind of is compound titanium solution, and the content of control titanium accounts for 2% to 10% of weight, and organic titanic compound such as tetraisopropyl titanate are dissolved in the organic solvent, makes its viscosity be about 2.0 centipoises (cps); Another kind is silicon compound solution, and the content of control silicon accounts for weight 2% to 10%, and organo-silicon compound such as silester are dissolved in the organic solvent, makes its viscosity be about 1.0 centipoises (cps).
Above-mentioned sealing fluorescent tube is at first under the atmospheric conditions of constant temperature and humidity, immerse compound titanium solution and the speed taking-up to be scheduled to, next be aerial dry run and in 600 ℃ temperature, carry out five minutes sintering process, so just formed high refractive index layer (2H).
Then, the sealing fluorescent tube that will scribble again high refractive index layer (2H) immerses silicon compound solution and the speed taking-up to be scheduled under the atmospheric conditions of constant temperature and humidity, next be aerial dry run and in 600 ℃ temperature, carry out five minutes sintering process, and then formed low-index layer (2L) on the high refractive index layer of just mentioning in front like this.
With above-mentioned method, high refractive index layer (2H) and low-index layer (2L) replace, generate continuously, until reach predetermined lamination number.Adjust viscosity or the tenor of aforementioned two kinds of solution, just can suitably control the light film thickness of these layers (2H and 2L).
The working condition of this incandescent lamp tube will be described now.
When suitable voltage be added to terminal (8) and (8) thus when electric light was lighted on both sides, filament was flowed through wherein current flow heats to turning white-hot, and produces visible radiation, also produces a large amount of infrared radiation simultaneously.
From the optical radiation that filament produces, visible light is arranged by wavelength and is passed infrared reflection film (2), is transmitted to the outside, and filament is sent in infrared radiation tunicle (2) reflection back to, and enhancing turns white-hot.As a result, for a certain size the actual current of the filament of flowing through, the radiant quantity of visible light significantly increases, that is has greatly improved luminescence efficiency.
Certainly, so a kind of lamp tube structure, in order to keep high-level efficiency, the transmission of visible light of film (2) should be as far as possible high, and infrared ray is particularly near ultrared reflection of light rate, also should be as far as possible high.
The transmissivity of the visible light of same layer infrared reflection film (2) and must not mutually take into account ultrared reflectivity, namely an index has improved, and must cause another index to reduce.
According to principle of the present invention, as previously mentioned, the light film thickness degree scope of each high refractive index layer (2H) is decided to be 0.21 to 0.31 micron, is near ultrared wavelength coverage.
And, light film thickness standard or main of each low-index layer (2L) has same scope, namely 0.21 to 0.31 micron, in addition, the thickness of some layer is decided to be the twice of standard thickness, namely 0.42 to 0.62 micron, and the thickness of the superiors is decided to be 1/2nd of standard thickness, namely 0.105 to 0.150 micron.
As a result, infrared reflection rate, particularly near infrared reflection rate and transmission of visible light, the two all is improved significantly, has greatly improved fluorescent tube efficient.
Table 1 expression is compared with the conventional structure example, according to several concrete structure embodiment of infrared reflection film of the present invention (2).
Although 2 for for simplicity, in the table 1 corresponding to the 3rd or the specification of the odd-level (all are 2H) of higher order layer be omitted, their light film thickness scope all is d, i.e. the standard thickness scope.
3, the standard size unit to all light film thicknesses is d, i.e. certain arbitrary value in 0.21 to 0.31 micrometer range.
Fig. 3 and Fig. 4 show the optical indicatrix figure of the multilayer film that the embodiment that improved according to the example of routine and the present invention draws.
In two figure, wavelength (nm) and light transmission (%) are respectively as horizontal ordinate and ordinate.
Among Fig. 3, curve A I and A II have been drawn respectively the spectral-transmission favtor according to the multilayer film of embodiments of the invention I and II; And curve B I and B II can not drawn the spectral-transmission favtor of conventional example I and II.
Equally, in Fig. 4, curve A III and A IV have been drawn respectively the spectral-transmission favtor according to embodiments of the invention III and IV; And curve B I and B II have been drawn respectively the spectral-transmission favtor of aforesaid conventional example.
Table 2 is to be that 100V, power are 500W to rated voltage, the light characteristics of structure " halogen " fluorescent tube as shown in Figure 1 carries out this and the result of study that obtains, and these fluorescent tubes have adopted the infrared reflection film (2) of the embodiment that has improved according to conventional example with by the present invention.
Annotate:
1, " transmission of visible light " refers to the transmissivity of the visible light (380-780nm) proofreaied and correct by luminescence efficiency.
2, " infrared ray " refers to the optical radiation of spectral range from 800 to about 2500nm.
3, " luminescence efficiency " refers to a relative value, and the luminescence efficiency of the electric light that usually " becomes clear " is got and done 100%.
Can find out significantly that from table 2 according to embodiments of the invention, any infrared reflection film in that fluorescent tube forms not only at transmission of visible light but also aspect the infrared reflection rate, all is better than any conventional example.And the peak value of reflectivity is near ultrared range.These characteristics have improved luminescence efficiency greatly.
According to above-mentioned embodiments of the invention, the low-index layer that doubles the standard light film thickness is to process as the low-index layer of innermost layer or relative internal layer.
Yet verified, even this one deck is processed as skin, still can obtain good result.
According to the present invention, in infrared reflection film (2), can in these layers, change more or less as the d of the standard size unit of the thickness of layer 2H and 2L, in this case, variation range still remains between 0.21 to 0.31 micron.
And it is undoubted forming infrared light reflecting film (2) in the inside of fluorescent tube, because fluorescent tube has at least one deck to be covered by multilayer film (2).And then even selected the low-index layer of thickness to be placed between high refractive index layer and the surface of the light tube, effect of the present invention still remains unchanged.
Also verified, fluorescent tube can be T shape or any geometric configuration, gets on as long as the infrared ray that reflects back from these infrared-reflecting layers can be sent back to filament.
Much less, the present invention can also be used for common bulb.
Brigh emitter value constructed in accordance comprises that one deck allows visible transmission and to the film of infrared reflection, this film by tubular clear lamp outside, in the inner face at least layer lamination that alternately stacks with high and low different refractivity that form of one side form.Wherein the light film thickness scope of arbitrary high refractive index layer is 0.21 to 0.31 micron, the light film thickness scope of the superiors' low-index layer is 1/2 * 0.21 to 1/2 * 0.31 micron, the light film thickness scope that has one deck in the remainder layer at least is 2 * 0.21 to 2 * 0.31 microns, and the light film thickness scope of any remainder layer is 0.21 to 0.31 micron.
This lamp tube structure has not only improved the transmission of visible light of infrared light reflecting film, and has improved its infrared reflection rate, and the peak value of catoptrical spectral power distribution is near infra-red range, and the result has improved luminescence efficiency.
Claims (4)
1, a kind of incandescent lamp tube comprises: one deck allows visible transmission and to the film of infrared reflection, this film by in inside and outside of tubular clear lamp at least the lamination that alternately stacks of the high and low refractive index layer that forms of one side form; The filament that the tungsten filament of installing along said fluorescent tube longitudinal axis center is made; Wherein the light film thickness scope of arbitrary high refractive index layer is 0.21 to 0.31 micron, the light film thickness scope of the superiors' low-index layer is 1/2 * 0.21 to 1/2 * 0.31 micron, the light film thickness scope that has a low-index layer at least is 2 * 0.21 to 2 * 0.31 microns, and the light film thickness scope of any other low-index layer is 0.21 to 0.31 micron.
2, according to a kind of incandescent lamp tube of claim 1, wherein the light film thickness scope in the said low-index layer is said at least one low-index layer of 2 * 0.21 to 2 * 0.31 microns, relatively is placed on the lower levels of multilayer film.
3, according to a kind of incandescent lamp tube of claim 1, wherein light film thickness scope is said at least one low-index layer of 2 * 0.21 to 2 * 0.31 microns, relatively is placed on the higher level face of multilayer film.
4, according to a kind of incandescent lamp tube of claim 1, wherein light film thickness scope is said at least one low-index layer of 2 * 0.21 to 2 * 0.31 microns, relatively is placed on the lower levels and higher level face of multilayer film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104715A CN85104715B (en) | 1985-06-19 | 1985-06-19 | Incandescent lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104715A CN85104715B (en) | 1985-06-19 | 1985-06-19 | Incandescent lamp tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104715A CN85104715A (en) | 1987-03-25 |
| CN85104715B true CN85104715B (en) | 1987-08-26 |
Family
ID=4794014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85104715A Expired CN85104715B (en) | 1985-06-19 | 1985-06-19 | Incandescent lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85104715B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005005754A1 (en) * | 2005-02-07 | 2006-08-17 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | NIR light bulb |
| CN105759334A (en) * | 2016-02-01 | 2016-07-13 | 张汉新 | Filter coating and lamp filtering device |
-
1985
- 1985-06-19 CN CN85104715A patent/CN85104715B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85104715A (en) | 1987-03-25 |
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