TW200849314A - Fluorescent lamp - Google Patents

Abstract

A fluorescent lamp has a glass tube bulb, a low refractive index protective layer formed on the inner surface of the glass tube bulb from a substance of a lower refractive index than the glass, a fluorescent layer formed on the low refractive index protective layer, discharge gas encapsulated within the glass tube bulb, and electrodes that discharge the discharge gas. The fluorescent layer can also contain a low refractive index substance. The fluorescent layer can also have a low refractive index lower than the low refractive index protective layer. It is also possible for a high refractive index protective layer of a higher refractive index than the low refractive index protective layer to be provided between the low refractive index protective layer and the fluorescent layer.

Description

200849314 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a fluorescent lamp suitable for backlighting of a home illumination or liquid crystal display device. [Prior Art] The light intensity of a general fluorescent lamp is weakened with time because [the mercury contained in the glass bulb and the glass material of the glass bulb react with each other chemically, thereby causing discoloration of the transparent glass bulb. In order to suppress the disadvantages, a protective layer may be disposed between the inner surface of the glass bulb and the phosphor layer, and the protective layer prevents the mercury vapor from contacting the glass bulb to prevent discoloration of the glass bulb. The light is weakened, and such a technique has been disclosed in the unprecedented patent application KOKAI Publication No. 2003-272559. Part of the light that faces the outside of the fluorescent lamp, the glass bulb and the air (reflection between the interface and the interface between the surface of the glass tube and the protective layer, the protective layer is made of yttrium oxide, aluminum oxide, yttrium oxide, and A material having a refractive index greater than that of glass. In this example, due to the law of refraction, light that is reflected through the interface between the glass bulb and the air enters the protective layer. Such light cannot be used for illumination around the fluorescent lamp. Therefore, the usage and efficiency of general lighting are not sufficient. SUMMARY OF THE INVENTION The object of the present invention is to provide a fluorescent lamp having a high luminous flux.

2143-9608-PF 5 200849314 Another object of the present invention is to provide a fluorescent lamp having high usage rate and light generation efficiency. In order to achieve the above object, the fluorescent lamp of the present invention comprises a glass tube bulb; a substance of a low refractive index protective layer having a lower refractive index than the glass, and the low refractive index protective layer is formed on the inner surface of the glass tube bulb A phosphor layer is formed on the low refractive index protective layer; f a dispersive medium is encapsulated inside the glass tube bulb; and an electrode dispersing the dispersing medium. The fluorescent lamp of this service is capable of increasing the luminous flux by illuminating the outside of the glass tube bulb by light, which is caused by the total reflection light passing through the interface between the glass tube bulb and the air, and again via the glass tube bulb and The interface between the low refractive index protective layers produces total reflection. [Embodiment] I Hereinafter, the first to fourth embodiments of the present invention will be described in detail with reference to the accompanying drawings. First Embodiment A first embodiment of the present invention discloses a fluorescent lamp, which is a hot cathode fluorescent lamp. As shown in Fig. 1, the fluorescent lamp has a glass tube bulb 101, a low refractive index protective layer 1 〇 2, an electrode 1 〇 5, a phosphor layer 1 0 7 and a discharge gas 140.

The glass tube bulb 101 is made into a tubular shape having a total length of 24.5 mm, an internal diameter of 22.5 mm, and a total length of 225 mm, and the 1B is a 2143-9608-PF 6 200849314 glass tube bulb 101 A circular section along the Η line. The glass of the refractive index of I 52 to 1.54 has a weight percentage of 68: oxygen cut (5) (6), an oxide of 1% by weight (1) 2 〇 3), and a weight percentage of oxidized mold 3) , weight percentage of 5 - oxidized paralysis), weight percent = 1 oxidation (iv) (10), weight percentage of 7 potassium oxide (K2 〇), weight percentage of 5 magnesium oxide (Mg0), weight percentage of 4 5 Oxidation grade), cerium oxide (Sr 〇) in a weight percentage of 5, and cerium oxide (Ba 〇) in a weight percentage of 6. The low refractive index preserve layer j 〇 2 is formed substantially on the entire inner surface of the glass bulb (8), and divides the glass tube (4) 1〇1 from the discharge gas (10) so that the mercury inside the discharge gas 14G does not Contact the glass tube bulb 101. Low fold: rate protection layer 102 is made of refractive index! a calcium fluoride (CaF2) single crystal of 3 and a cerium oxide (Si〇2) having a refractive index of 145 to 17, a mixture of the two, and the percentage of mixing thereof is thus low refractive index protection | It has a lower rate than the glass tube bulb i 〇ι. The thickness of the low refractive index protective layer 102 is between 0.05 and 3 microns, and more preferably between 〇. 丨 and 2 microns, because the thickness of the low refractive index protective layer 102 is greater than 3 In the case of micron-days, the light is reported to be absorbed by the low-refractive-index protective layer 102, and the luminous flux emitted by the glass-tube bulb ι〇ι is reduced, and when the thickness of the low-refractive-index protective layer 丨〇2 is less than 0.05 μm , not only between the discharge gas 14〇 and the glass tube bulb ι〇ι

2143-9608-PF 7 200849314 It is difficult to separate, and the glass tube bulb 1 〇 1 external light is also difficult to produce full reflection (as described below). The phosphor layer 107 is formed on the entire inner surface of the low refractive index protective layer 丨〇2, and is formed concentrically with the glass tube bulb 1 ο 1 and the low refractive index protective layer 丨〇 2, and the phosphor layer The 1〇7 system converts the ultraviolet radiation emitted by the internal water of the discharge gas 14〇 into visible light, and the phosphor layer J 7 includes a red-emitting phosphor, a green-emitting phosphor, and a (-A phosphor that emits light, in which the red-emitting phosphor is yttrium-activated yttrium oxide (Υ2〇3··Ει〇, the green-emitting phosphor is yttrium, yttrium-activated magnesium borate (LaP〇4:Ce) , Tb), blue luminescent phosphor, low 铕 铕 activated barium magnesium aluminate (BaMg2A 116〇27: Eu) ° The thickness of the phosphor layer 107 is between 3 and 50 microns, and better Between 5 and 30 microns, because when the thickness of the phosphor layer 7 is greater than 50 microns, the phosphor layer 107 will become easy to fall off, and when the thickness of the phosphor layer is less than 3 microns, The phosphor layer 丨〇 7 becomes transparent and it is difficult to transmit sufficient light. The hollow portion of the glass tube bulb 101 is filled with the discharge gas 14〇 The discharge gas 140 includes a predetermined amount of mercury vapor and an inert gas, wherein the I-month gas is a mixed gas of argon and helium, and is used to adjust the internal pressure of the glass tube bulb 1 〇1 to a predetermined low pressure. And the ratio of argon and build-up is argon of 5 by weight and 氖 of 95 by weight, and mercury vapor is used to generate ultraviolet rays to excite the phosphor layer 1 〇 7. The electrode 105 is disposed in the glass tube bulb 1 〇 The two ends of the crucible are located inside the glass bulb 101, and each of the electrodes 1〇5 is provided with a filament i(10).

2143-9608-PF 8 200849314 and supply current to the wire 〗 〖β Wang waste wire 1 〇6, while the filament I 06 is 祜 祜 and the material of the ten is covered by i 4 gentleman B ^ ^ /, with electronic emission "Overlays (for example, yttrium oxide, yttrium oxide filaments, 6 俵 俵 俵 俵 俵 俵 俵 俵 俵 俵 俵 俵 俵 俵 俵 ) ) ) ) ) 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The illuminating operation of the fluorescent lamp structure will be described below. When the supply-electricity is requested to be supplied to 106, the filament 106 is heated, and the filament m which emits heat emits hot electrons, and the hot electrons collide with the mercury contained in the discharge gas (4) inside the glass bulb 101. The atom 'activates the bound electron in the mercury atom by colliding with the hot electron'. When the activated bound electron is converted to the ground state, the activated electron emits ultraviolet radiation (main wavelength 254 nm), 'but the ultraviolet radiation emitted Irradiation onto the phosphor layer 107, thereby activating the fluorescent particulate matter inside the phosphor layer 1〇7, and then visible light (having a wavelength of 4 〇〇 nanometer or even larger) is emitted by the activated fluorescent particulate matter. The low refractive index protective layer 102 and the glass tube bulb 101 are sequentially passed through, so that the fluorescent lamp U1 emits a luminous flux. The refractive index of the air around the glass tube bulb 01 is lower than that of the glass tube bulb 1 〇 1 'As shown in Fig. 2A, the incident angle <91 of the light (including the generated visible light) is greater than a predetermined value (critical angle). The total reflection occurs at the interface between the glass bulb 1〇1 and the air, so the light does not illuminate the outside of the glass tube bulb 101, and the reflection angle 6*3 is equal to the incident angle 0 1, and the refraction angle 0 2 is greater than Or equal to 90 degrees. The fully reflective light at the interface between the glass tube bulb 1 〇 1 and the air will reach the interface between the glass tube bulb 1 〇 1 and the low refractive index 2143-9608-PF 9 200849314 protective layer 102 at an incident angle of 0 3 . Here, if the refractive index of the low refractive index protective layer i 〇 bubble 101, due to the law of refraction, and the light reflected by the interface between the air, due to the law of refraction, it is in the glass tube lamp

The incident angle of the angle is 0 3, and the critical angle is obtained by the glass tube bulb 以及 j and the refractive index is smaller than the glass tube bulb 1 〇 1 102. The refractive index of the low refractive index protective layer 1〇2. Therefore, as shown in Fig. 2B, the refractive index by 10 2 is larger than that of the glass tube lamp: 'all of them are defined by the reflectivity of the glass tube bulb 1 〇 1 into the low refractive index protective layer protective layer 102, and this light is also defined Entering into the low refractive protective layer 102. On the other hand, as shown in Fig. 2C, the light reflected by the glass tube bulb i 〇丨 and the interface between the air will come to the interface between the glass tube bulb 1〇1 and the low refractive index protective layer 1〇2. It has an incident angle Θ 3 equal to or greater than the critical angle, and again produces total reflection at the interface between the glass tube bulb 1〇1 and the low refractive index protective layer 102, and the totally reflected light again comes to the glass tube bulb and At the interface between the air, some of the total reflected light will leave the interface between the glass tube bulb and the air, and the rest of the light will be totally reflected again, so the light repeats the same operation. Since the fluorescent lamp 111 has a low refractive index protective layer 1〇2, more light can be emitted to the outside of the glass tube bulb 1 ,1, but in the conventional fluorescent lamp, its protection The refractive index of the layer is greater than that of glass 2143-9608-PF 10 200849314. A method of manufacturing the fluorescent lamp of the first embodiment will be described below. Station / first - work (four) hollow glass tube cut - the length, and clean the inner surface of the cutting glass tube with pure water and then heat the glass tube to 500 main b (J0 C, to decompose any organic matter.

The receiver adjusts - the dispersion liquid (the dispersion liquid of the low refractive index protective layer), and the dispersion liquid mainly disperses the appearance of the low refractive index protective layer (10) from the dispersive medium f (10) and the dioxide dioxide (Si〇2) The particles in the gasification, Cao (CaF2) & _ oxidized stone eve (8) (6) particle diameter is w nanometer to $ (10) nanometer = better, and ethanol is used as a dispersion medium, and need to pay attention to , 色政' mussels can be water, ethanol or isopropanol; hydrazine hydrochloride (for example, formazan formic acid, propyl formate, isopropyl formate, butyl citrate, isobutyl formate) Ester or dibutyl methacrylate); ethyl acetate (for example, methyl ester, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate or first isobutyl acrylate) Ketone (for example, acetone, methyl ethyl ketone or ketobutyl ketone); or an aromatic hydrocarbon (for example, toluene, p-xylene or o-diphenylbenzene). The particles of the phosphor layer 1 〇 7 formed of the red luminescent phosphor, the green luminescent phosphor, and the blue luminescent phosphor also adjust the dispersing liquid (fluorescent layer dispersing liquid) dispersed in the dispersing medium. The dispersing liquid also includes an adhesive component, which may be a phenolic resin, an epoxy resin, an acrylic resin, a cellulose resin (such as methyl cellulose, ethyl cellulose or nitrocellulose), and a polyethylene poly ^pyrrolidone, polypyrrolidone, polyvinyl alcohol, butyral resin or oxime ketone resin.

2143-9608-PF 11 200849314 Then, the adhesive component remains inside the fluorescent lamp product, and like the impurities, it is possible to make the product's life (durability), luminosity (brightness), and reverse (four) material low. The adhesive component is then completely evaporated during the baking process (described below) without leaving any adhesive components. Hundreds of first, low refractive index protective layer dispersion liquid is applied to the inner surface of the glass tube bulb (8) and air-dried, then the working layer dispersion liquid is applied and dried, and the spray method, the immersion method, the suction method or the use The method of liquid rinsing the inside of the glass tube bulb can be used as an application method. In addition, an electrostatic application method or a gel technique can be used as an application method, and the gel technique uses an organic solvent having a metal alkoxide dissolved therein. The electrode system is disposed inside the glass tube, and the mercury and the atmosphere system are encapsulated inside the glass tube, and both ends of the glass tube are sealed. The low (four) rate protective layer 1〇2 is formed on the inner surface of the glass tube bulb 〇1, and the illuminator 107 is attached to the top layer to form the fluorescent lamp 11 of the first embodiment. Second embodiment 々 In the present invention In the second embodiment, 'light rays that are totally reflected at the interface between the glass tube bulb 101 and the space A' may propagate to the light-emitting layer (10). In this case, the refractive index of the fluorescent 11Q7 is preferably lower than the refractive index of the low refractive index protective layer, so that light (even for this type of light component) can be radiated to the outside of the fluorescent lamp. Total reflection occurs at the interface between the low refractive index protective layer 102 and the fluorescent layer 1〇7. A method for effectively reducing the refractive index of the phosphor layer m, which uniformly includes a low refractive index material to cause sputum chips! n 7 ^ t shell The refractive index from the Chian layer 107 is lower than the low refraction

2143-9608-PF 12 200849314 Refractive index of the protective layer 102, @fluorination series (CaF〇, gasification and gasification calcium mixture (CeF3+CaF2), magnesium fluoride (MgF2), barium fluoride (SrF2) Barium fluoride (BaF2), sodium hexafluoroaluminate (commonly known as: cryolite UlFe), and dioxide dioxide (S i 〇2) can be used as low refractive index materials. In the phosphor layer 1〇7, therefore, when the refractive index of the phosphor layer 107 is lower than the refractive index of the low refractive index protective layer 1〇2, the total reflected light is generated via the interface between the glass tube bulb 101 and the air= The total reflection is again generated through the interface between the phosphor layer 107 and the low refractive index protective layer 1〇2, and then the light is emitted to the outside of the fluorescent lamp. Therefore, when the fluorescent lamp 111 has the fluorescent layer 1 When the refractive index of 〇7 is lower than the refractive index of the low refractive index protective layer 1G2, more light can be radiated from the camping lamp 111 to the outside of the glass tube bulb 〇1, wherein the low refractive index protection of the fluorescent lamp 111 The refractive index of the layer 102 is lower than that of the swell layer of the conventional fluorescent lamp, and the refractive index of the protective layer of the conventional fluorescent lamp is large. Glass tube bulb 101. The third embodiment is applied to the hot cathode A in the first embodiment and the second embodiment, and in the third embodiment, the condition is not limited. The third embodiment can also be applied to a cold cathode fluorescent lamp. The fluorescent lamp m of the third embodiment is different from the first embodiment and the second embodiment, and the glory 35111 of the third embodiment has a cold cathode electrode 1〇. 5 (as shown in Fig. 3), which is flat and interconnected with the wire 109, and the other-direction structure of the fluorescent lamp 111 of the third embodiment is the same as that of the first embodiment. Example

2143-9608-PF 13 200849314 In the first month of this month, the internal electrode type glory lamp 111' of the second embodiment is disposed inside the glass fluorescent tube 1〇1, however, The fourth embodiment of the invention is an external electrode type fluorescent lamp, the electrode of which is disposed outside the glass fluorescent tube 1 〇1. As shown in Fig. 4, the fluorescent lamp ηι of the fourth embodiment of the present invention is different from the first embodiment in that it has an external electrode 13A, and the external electrode 13 is formed on the outer periphery of both ends of the glass tube bulb 101. And made of an iron-nickel alloy, and the other-directional structure of the fluorescent lamp lu of the fourth embodiment is the same as that of the first embodiment. Fifth Embodiment In the first to fourth embodiments of the present invention, the working layer is disposed on the low refractive index protective layer 1〇2, however, in the fifth aspect of the present invention, The high refractive index protective layer 1〇3 is disposed between the low refractive index: between the germanium layer 102 and the phosphor layer 1〇7, ', the protective layer 1G2. 〃 (4) cut in the low refractive index 5A and 5B shows an example of applying this structure to the hot cathode, as shown in Fig. 5B, the fluorescent lamp} u;: the inner surface of the ugly tube bulb 1〇1 The above-mentioned concentric circles are sequentially opened in the glass "ankle 曰 102, 咼 refractive index protective layer 103 and fluorescent layer ιπ high refractive index protective layer 103 by oxidation disorder (Y20 g \ rate is 1. 75. The refractive index of the high refractive index protective layer ΐ θ3 is between the turns, and more preferably between n彳5 9 w 1 to 3 μm τ w~ you "于〇·; [to 2 microns曰 曰 曰 鳟 1 1 n n n n n n n n n n n 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋

2143-9608-PF 14 200849314 The inner surface will have a brown color, and r will be added*, because the water and sodium will chemically react in the inner mouth P of the glass tube bulb, thus reducing the appearance quality of the outer layer + low outer layer, and the other On the other hand, when the thick sound of the protective layer i 0 3 of the livestock south is greater than 3 micrometers, since the high refractive index protective layer 1 〇 3 will absorb the male 氺, the 曰 and the first will be the first, so the illuminating light will be weakened. . The method for fabricating the glory 111 of the present embodiment is as follows: ▲ Firstly, the oxidation of the high refractive index protection ί 103 (touching particles adjusts a dispersion liquid (high refractive protection only layer of dispersing liquid), and dispersing liquid ί %

It is dispersed in a dispersive medium. Next, the low refractive index protective layer dispersing liquid is applied to the inner surface of the glass tube and air dried. Again, the high refractive index protective layer dispersing liquid is applied and air dried, and then the fluorescent layer dispersing liquid 骰拙 _ ^ 欣 Xinxin body is applied, and then Drying. In addition, as for the other examples of the fifth embodiment, the 锣竹古, the upper gentleman, and the other method are the first to fourth embodiments. Sixth Embodiment In the first to fifth embodiments, the low refractive index protective layer 102 is disposed on the glass tube lamp and the bubble 101, but in the sixth embodiment, the low refractive index protective layer 1G2 and the glass are provided. It is possible to provide an air layer between the tube bulbs m. _ In the /, yoke example, which applies this structure to the hot cathode fluorescent lamp Lu, for example, as shown in Fig. 6A and Fig. 6B, the formation mode of the glory lamp (1) is within the glass tube bulb 1G1 The upper air layer 1〇8, the low refractive index protective layer 102, and the fluorescent layer ι7 are formed in a concentric manner. The air layer 〇8 configured by the Benbega example, which passes through the glass tube lamp

2143-9608-PF 15 200849314 The total reflected light is generated at the interface between the bubble 101 and the outside air of the fluorescent lamp 111, and then the total reflection is generated through the interface between the glass tube lamp m and the air layer pair, and then the light is directed to the firefly. The outside of the light. The manufacturing method of the fluorescent lamp 111 of this embodiment is as follows: The low refractive index protective layer 102 is formed into a shape of a straight tube and has a radius smaller than that of the glass tube lamp and the bubble 101. Then, the fluorescent layer dispersing liquid is applied to the low The inner surface of the refractive index protective layer 102; the fork 1 has a illusion surface and is dried, and soon after drying

It breaks into the glass tube bulb. Further, M # # - , , ^ 卜 Other manufacturing methods for the sixth embodiment are also like the first to fourth embodiments. Seventh Embodiment In the seventh embodiment, it is possible to provide an air layer between the low refractive index protective layer 1〇2 and the phosphor layer. The camping light 111 is formed by sequentially forming a low refractive index protective layer 102, an air layer 108, and a fluorescent layer 107 in a concentric manner on the inner surface of the glass tube lamp and the bubble 1 ()1. The air layer 108 disposed in this embodiment generates total reflected light through the interface between the glass tube bulb 101 and the outside air of the fluorescent lamp 1U, and then passes through the low refractive index protection layer and the air layer 1〇8 again. The interfacial interface produces total reflection 'and then directs the light to the outside of the fluorescent lamp ιη. The method for fabricating the fluorescent lamp 1U of the present embodiment is as follows: The phosphor layer 107 is formed into a shape of a straight tube, and has a half smaller than the low refractive index layer 4 G2, and the low refractive index protective layer liquid is applied. The glass tube bulb 101 is air-dried and then the fluorescent light 35107 is broken into a glass tube bulb ι〇ι formed on the inner surface with a low refractive protective layer 102. In addition,

2143-9608-PF 16 200849314 Other fabrications of the seventh embodiment Four embodiments. The same applies to the first embodiment to the other embodiment: in the above embodiment, a mixture of low refractive index (CaF2 and oxygen cut (10) 2) is formed, and the present hair rt is not limited thereto. In other embodiments of the invention, the low refractive index f outer low refractive index protective layer is germanium. 2 Dioxide is formed, and the other 1 is gas-smelting. The refractive index is broad: Na' refractive index is (BaF2, refractive index is 47), 丄* · 44) Sputum squirrel sodium aluminate (commonly known as ·Ice

Na2AlF6, refractive index is ^. 38) > Day, and a mixture of lanthanum fluoride and calcium fluoride mixed oblique 6 3 8 2 refractive index _ h3 to 4). In the above embodiments, the high refractive index is preserved (γ2〇ο, however, the present invention may also be X > 曰 釓 釓 m m m 不 不 不 不 不 不 不 不 不 不 限制 限制 限制 限制 限制 限制 限制 限制 限制 限制 在 在 在 在 在 在 在Let, the south refractive index protective layer 103 ” i R Ί Π , 6_L dr. ΛΑ ^ one oxidation side, “ ”, 2· 5), copper oxide (Cu0, refractive index is 26), two emulsified diterpene ( Gd2〇3, refractive index is 18), Sany Xuanyan 0 /1, ^ an emulsified complex (Cr2〇3 'refractive index is 2.4), oxidized bromine (10), refractive index & (Sm2〇3, refractive index η 产 production king ^, emulsified 钐 oxidation - to (four) / Wei (ZnG, refractive index of 2.0), three 折射率 refractive index of 2.3), oxidation (1) 〇, refractive index of. to 2.3), titanium dioxide (Ti 〇 2, the refractive index is 2 (Zr〇2, refractive index is 2 -) emulsified I port: oxidation ''.), emulsified ruthenium ((10) 2, refractive index is 2.2) and - emulsified one can 2' 3' refractive index is 165) Made of any of the W

2143-9608-PF 17 200849314 The low refractive index protective layer m may also be formed by fluorination (track 3) and gasification (CeF3). The fluorinated (hidden) system has a refractive index of U, and the gasification brocade (CeF〇 also has a refractive index of 1.6, when the low refractive index protective layer 1〇2 is composed of cesium fluoride (NdFO and gasification (CeF3) When formed, the refractive index of the glass material constituting the glass tube bulb ι〇ι must be relatively increased (for example, 2. 〇 to 2.2). And to make a glass having a higher refractive index, it can be in the glass. Zinc is added. In the glory lamp (1)t of the above embodiment, the phosphor layer 1{)7 is a red-emitting phosphor using a lock-activated yttrium oxide (Y2〇3:Eu), and a low-valent yttrium-activated yttrium acid yttrium. A blue luminescent phosphor of magnesium (BaMg2All6〇27:Eu) and a green luminescent phosphor decorated with activated magnesium sulphate (LaP〇4:Ce, Tb). However, the present invention is not limited thereto. In other embodiments of the present invention, it is also possible to use Y2〇3S:Eu, SrS:EU, CaS:Eu, CaAlSiN3:Eu, and U2 〇2S:E" red luminescent phosphors, ZnS: Ag, (Ba Sr)MgAlle0l7: Eu and (Ba,Sr,Ca,Mg)ie(_)6Ci2:Eu, etc. Blue-emitting glomerium, BaMgAliD〇i7:Eu, Mn, (MgCaSrBa)Si2〇2N2:Eu^. Ribs 4: Eu, CeMgAlii〇i9: Tb, Lap〇4·Tb, and (Ce, Gd)MgB5〇1: Green luminescent luminescence of Tb, etc. The shapes, sizes, and dimensions described in the above embodiments The present invention is also not limited thereto. For example, in the above embodiment, the glass official bulb 1.1 is a straight tube. However, the present invention is not limited thereto, and the vertical glass bulb 101 can also be a tube. , -W type tube or a ring tube. In the above-mentioned example, the inert gas system argon in the discharge gas i40,

2143-9608-PF 18 200849314 Mixed gas of 氖, however, the present invention is not limited thereto, and may be an inert gas formed by ruthenium alone or an inert gas which is mixed with argon and ytterbium. . In addition, the inert gas may mix the gas with the non-volatile gas. While the invention has been described above in terms of the preferred embodiments of the present invention, it is not intended to limit the scope of the invention, and various modifications and changes may be made without departing from the spirit and scope of the invention. The scope of the present invention is defined by the scope of the appended claims. ϋ This application is based on the contents of the specification disclosed in Japanese Patent Application No. Ν0. 2〇〇7_ΐ22823, the scope, illustration and abstract of the patent, and has been cited in this specification, the application of which is May 7, 2007 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a fluorescent lamp of a first embodiment. Fig. 1 is a schematic cross-sectional view along a Α-Α line in Fig. 1 to 2C. Fig. 3 is a cross-sectional view showing the structure of the cut portion of the refractory lamp of the third embodiment. Fig. 4 is a cross-sectional view showing the structure of the cut portion of the glory lamp of the fourth embodiment. 5A is a schematic longitudinal cross-sectional view of the glare lamp of the fifth embodiment. Fig. 5B is a cross-sectional view taken along line of Fig. 5A. Fig. 6A is a longitudinal sectional view showing the fluorescent lamp of the sixth embodiment.

2143-9608-PF 19 200849314 Figure 6B is a schematic cross-sectional view taken along line C-C in Figure 6A. [Main component symbol description] 1 01 ~ glass tube bulb 1 0 2 ~ low refractive index protective layer 103 ~ high refractive index protective layer 1 0 5 ~ electrode 1 0 6 ~ filament 107 ~ fluorescent layer 108 ~ air layer 109 ~ wire 111 to fluorescent lamp 140 to discharge gas 0 1 to incident angle 0 2 to refraction angle (93 to reflection angle, incident angle 2143-9608-PF 20

Claims (1)

200849314 X. Patent application scope: 1 · A fluorescent lamp comprising: a glass tube bulb; a low refractive index protective layer, the low refractive index protective layer has a substance, and the substance has a lower refractive index than the glass, and the a low refractive index protective layer is formed on the inner surface of the glass tube bulb; a phosphor layer is formed on the low refractive index protective layer; a dispersive medium is encapsulated inside the glass tube bulb; and an electrode is dispersed The dispersion medium. 2. The fluorescent lamp of claim 2, wherein the phosphor layer comprises a low refractive index material and the refractive index of the phosphor layer is reduced by the low refractive index protective layer. 3. The fluorescent lamp according to claim 2, wherein the low refractive index material is selected from the group consisting of free fluorination _#2), fluorinated # and fluorinated #5 mixture (CeF3 + CaF2), fluorine Magnesium (MgF2), strontium fluoride (SrF〇, cesium fluoride (Βπ〇, sodium hexafluoroaluminate (Na2A1Fe) and cerium oxide (Si〇2)). The fluorescent lamp of claim 1, further comprising a refractive index protection layer 4, the high refractive index protective layer having a refractive index higher than the low refractive index protective layer, and being disposed on the low refractive (four) protective layer and the 5. The fluorescent lamp of the invention of claim 2, wherein the low-fold, rate protective layer comprises a substance selected from the group consisting of free calcium fluoride (Μ, fluorinated # and Calcium fluoride mixture (CeF3 + CaF2), magnesium fluoride, fluorinated 2143-9608-PF 21 200849314 pin (SrF2), gasification lock ^ ^ A 2), /, fluorine a sulphuric acid steel (Na2AlF6) or two The fluorescent lamp of the oxidized dream (S i 02). The fluorescent lamp of claim 2, further comprising an air layer configured to the glass bulb And the low-refractive-index protective layer, wherein the fluorescent lamp according to the first aspect of the invention, further comprising: the scribing layer d the gas layer is disposed on the low refractive index protective layer and the glory layer 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 9. The fluorescent lamp of claim 8, wherein the red-emitting fluorescent system is selected from the group consisting of γ 〇悍 甶 〇 Y2 〇 3S: Eu, SrS: Eu, CaS: Eu, CaA1SlN3 : The group consisting of EU and Mi. 10· The light system according to item 8 of the patent application is free Ζης· Λ U π^ ^ ^ 7b ^ Γ Μ,, nS. Ag, (Ba, Sr) heart Al10〇 17: Eu and (Ba, Sr, a, gu P04) 6C12: EU group of people. η · As described in the scope of patent application, the light system chooses BaMirA1 η, "〒 and 'also has hair light R ς. π 17,Eu ' Mn> (MgCaSrBa)Si2〇2N2:Eu ' Ba2S1〇4: Eu, CeMgAlii〇i9: Group of Tb Tb. .Tb and (Ce, Gd )MgB5〇I.: 2143-9608- PF 22