TW518402B - An electric discharge lamp, a manufacturing method of an electric discharge lamp, and an apparatus adopting the electric discharge lamp - Google Patents

Abstract

The present invention aims to obtain an electric discharge lamp having a highly efficient illumination without having to include a special component such as lamp cover. An intensity of the lights output from the light conductor to the LCD is improved by setting the width Y of aperture to 55% to 100% of the width X of illumination plane of the light conductor. The second fluorescent coating which is thinner than the first fluorescent coating is covering the aperture of the lamp tube. The second fluorescent coating can also emit light at the aperture.

Description

518402 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a discharge lamp used in a back light, a reading light source for a machine, and the like, a manufacturing method thereof, and a device using the discharge lamp. [Conventional Technology] Fig. 12 shows a lighting device using a conventional back light disclosed in Japanese Patent Application Laid-Open No. 丨 〇 _ 丨 6 2 6 丨 7. The formation of the liquid crystal display device 1 includes a back light 4 combined with a pair of left and right light source devices 2 (only one side is shown in the drawing) and a light guide unit 3; a flat, ^ transmissive liquid crystal display element 5; And a cover 6 for storing and holding the back light 4 and the transmissive liquid crystal display element 5. This back light 4 is arranged on the non-light-emitting surface 7 side of the transmissive liquid crystal display element 5. The above-mentioned light guide unit 3 is formed by stacking and fixing the reflection sheet 8, the light guide plate 9, the light diffusion sheet ι0, and the lens sheet 11. The light guide plate 9 is formed with a light-receiving surface 12 and a light-emitting surface 13 for emitting incident light. The light-diffusing sheet 10 described above is laminated on the light-emitting surface. Operation = light = 2 is constructed as a conventional reflection-type cold cathode lamp "Γ Yin? Lamp 14 is formed by coating titanium oxide on a cylindrical surface, and enclosing a rare gas such as a rolled body. Λ ^ is used to form the reflective film 16. The reflective film 16 is not shaped # the entire peripheral surface of the bulb 15, the second part. The missing part is used to form the opening 17: = is in the range of about 90 The slender light, the shape of the entrance direction of the opening Γ, the incident surface 120 is on the upper surface and faces the light guide plate 12 above. The cover 18 is used to improve the reflection cold cathode lamp from the door ΠΑ. There is a lamp around 14; the light emitted by k Tongyou opening 17 is directed to the light guide plate 9 _464.ptd 2 $ 5 page 518402 V. Description of the invention (2) The rate and used to improve the light emission of the back lamp 4 The liquid crystal display device 1 uses the reflection-type cold cathode lamp 4 as a source, so most of the light emitted from the reflection-type cold cathode lamp 14 is: the mouth 17 faces the incident surface of the light guide plate 9 12 shots to improve the opening efficiency. Figure 13 shows the use of the conventional back light described in the above bulletin. The device is the same as the one described in FIG. 12 and is used for explanation. The basic structure of the liquid crystal display device! 9 is the same as the liquid device 1 shown in FIG. 2 and its formation includes : Backlight 22, combined with left and right one = if 1 ° (only one of them is shown in the figure) and light guide unit 21; as a display: of; over-type liquid crystal display element 5; and cover 6 for storing and The surface light 22 and the transmissive liquid crystal display element 5. The back light 22 is the non-light-emitting surface 7 side of the transmissive liquid crystal display element 5 described above. The pole == 2 ° is constructed as a reflective type with a reflective light source. The formation of the two-shaped J.5H reflective cold cathode lamp 14 is formed by forming a round bulb 15 with a rare gas such as gas, and coating the inner peripheral surface with a titanium oxide reflective film 16. Reflective film 1 6 The entire inner peripheral surface of the bulb 15 is lacking approximately 90. The second part is formed with an opening 17 for emitting a long and thin light along the axis of the bulb 15. 9 上The light guide 21 is shaped through the laminated and fixed reflection sheet 23, the light guide plate κ24 and the lens sheet 11. . There is incident on the light guide plate is formed g

89100464.ptd 518402 V. Description of the invention (3)-~ The surface 12 is incident with light from the above-mentioned reflection-type cold cathode lamp 丨 4, and the light emitting surface 13 is formed to emit the incident light. The light diffusion sheet μ is laminated on the light emitting surface 13. ',

The reflective sheet 23 is formed to have a size larger than the light guide plate 9 on the outer periphery facing the light source device 20 side, and extends to a position covering a half of the circumference of the reflective cold cathode light bulb 14, along the reflective cold cathode, One side (lower side in the drawing) of the opening portion 17 of the bulb 14 is covered with the reflection sheet 2 3. In addition, the above-mentioned light diffusion sheet 24 also has a size larger than that of the above-mentioned light guide plate 9 on the outer periphery of the side facing the above-mentioned light source device 20, extending to a position covering a half of the circumference of the above-mentioned reflective cold cathode lamp 14, along the The other side (upper side in the drawing) facing the opening 17 of the reflection-type cold cathode lamp 14 is covered with the light diffusion sheet 24.

In this structure, the reflection-type cold cathode light bulb 4 is used to emit light from the opening 17. The part of the light emitted from the opening 7 is separated from the incident surface 1 2 ′ of the light guide plate 9 and irradiates the reflection sheet 23 or the light diffusion sheet 24 to the light source device 20 side, instead of the light guide plate 9. After being reflected, they are guided to the entrance surface 12. Therefore, the light emitted from the opening 17 is substantially incident into the light guide plate 9 from the entrance surface 12 to improve the incidence efficiency of the light guide plate 9. In addition, the light incident from the incident surface 12 into the light guide plate 9 emits light from the light emitting surface 13 of the light guide plate 9 and irradiates the transmissive liquid crystal display element 5 from the non-light emitting surface 7 side thereof. In addition, because the incident efficiency of the light guide plate 9 is improved, the amount of light emitted from the light emitting surface 13 is increased, and the brightness of the light emitting surface of the back lamp 22 is increased, so the brightness of the liquid crystal display of the transmissive liquid crystal display element 5 is increased. In addition, via the extended reflection sheet 23 or the light diffusion sheet 24, it is used to improve the light guide.

89100464.ptd Page 7 518402 V. Description of the invention (4) The shot efficiency of board 9 'and the guests of Gubei. Therefore, it is not necessary to ask about the brightness of the luminous surface of the moonlight 2 or the liquid crystal display; use a lamp cover, etc. = the injection efficiency of the light guide plate 9, chrome products> you can use the parts to improve the back light Above two sides of 22: Degree or brightness of liquid display, the number of parts can be reduced. \ 1From the [problem to be solved by the invention] The sun cover of the sun that is not known in FIG. 12 The lamp cover 18 is used to reflect the light from the surface: the moon, and the light cover 18 is used to guide the light to the incident surface. 12, as the light emitted by the U away direction, so that _ ^ person L Ren 疋 because the use of the lamp cover 18, the number of parts! Second: there is a problem that i becomes higher. In addition, since the lamp cover η is used, there is a problem that the thickness of the device increases due to illumination. Xi 2 2 k Since most of the metal 8 is made of metal, there will be leakage current :: L 3 'L especially /, in cold cathode lamps, there will be problems with discharge becoming unstable, because in the lamp cover It is easy to store the electric charge, so it will suck the dust in the air and turn it into pollution. u In addition, in the lighting device shown in FIG. 13, 'the lamp cover Λ may not be used: 4, 4, and the way is to extend the reflection sheet 23 and the light diffusion sheet 24 to reflect f; The light emitted in the direction, # to guide it toward the entrance, but there is a problem that it is necessary to extend the reflection sheet 23 and the light diffusion sheet 24. There is a problem that the thickness of the lighting device increases. = Ming, to solve the above-mentioned problem, the purpose is to provide a light guide plate = electrical two-sided irradiating surface of the light, which can improve the efficiency of light irradiation. In addition, the purpose of the present invention is to provide a discharge lamp, because Lamp cover

518402 V. Description of the invention (5) and other special parts, so the discharge lamp can be made cheap, unstable, and lamp pollution occurs. With discharge [Means for solving the problem] = Hair: The discharge lamp is provided with a strip-shaped mouth ^ with a reflective film having a specified width, and is characterized in that the above-mentioned opening portion has a degree of exposure = degree. The above-mentioned electric lamp in the factory is characterized in that the reflective film opening on the upper part = with a luminous film, so that the thickness of the glory film at the above opening portion = less than 1/2 of the thickness of the glory film on the inner side of the 丄 reflective film, preferably 1 / 2 ~ The upper discharge lamp is characterized by being provided with a transparent object on the outer side of the lamp tube, which is used to set the lamp tube to 3% ~ 20% of the diameter of the lamp tube. ί ;! The manufacturing method of the discharge lamp is characterized in that the steps involved are: forming a reflective film on the entire inner periphery of the k-guan; · forming a first fluorescent film on the entire inner periphery of the reflective film; The reflective film and the above-mentioned fluorescent film are used to remove the normal part wounds, and are used to form a band-shaped opening; and after the formation of the openings described in the general description, a second fluorescent film is formed on the entire inner periphery of the lamp tube. ^ In summary, the opening width of the mouth is characterized by the ratio of the field to the irradiation surface of the light, a range of 55% to 1GG%, and preferably a range of 6Q% to 95%. The second fluorescent film described in f is characterized in that it is formed to a thickness of 1/2 or less of the u-th optical film, preferably 1/2 to 1/8.

518402 V. Description of the invention (6) [Implementation mode of the invention] Implementation mode 1. Fig. 1 is an oblique view of the discharge lamp 71 of the present invention. Hai discharge: k 71 is equipped with a lamp 5 4. The diameter (outer diameter) of the tube is made into 2.0, and 2 · 6_ & / 4 is a glass tube, which is a kind of light tube. In the following, the diameter (outer diameter) of the lamp tube 54 and the diameter of the lamp tube 4 and 4 · 6mm, etc. will be referred to as lamp tube D. An electrode (59) is mounted on the lamp tube (e), and the electrode cover (59) is used to support the portion of the wiring harness connected to the electrode as shown in (a). ]: Dip = line 51 and not shown in the figure 58 are used to project along the lamp tube 54 ": The square tube is provided with an opening in the lamp tube 54. There is a transparent rubber ring 53 at the position Βθ ^ L. This transparent rubber W53 uses transparent silicone rubber, "acid permeate resin and other materials fm / 3 acrylic of the sun and the moon. Figure 2 is the lightning protection 71 shown in Figure 1 δ a taxi t electricity ^ and U of people-A A cross-sectional view showing a back light device in which the discharge lamp 71 is mounted. π τ t i A reflective film 55 coated with titanium oxide is provided inside the lamp tube 54. The reflection film 55 is stripped off to form the opening 58. In addition, a first fluorescent film 56 and a second fluorescent film 57 are provided inside the lamp tube. The J-th fluorescent film 56 is not provided in the opening 58, but the second fluorescent film 57 is provided inside the reflection 55 Opening 58. This back light device is composed of a light guide 64, a reflection sheet 65, a light diffusion sheet 101, a lens sheet 102, and a color filter 103. In addition, the light guide 64 is provided on one side for emitting light. Equipped with LCD (Liquid Crystal Display) 6 3. The operation will be described below. When the discharge lamp 71 is lit, the first fluorescent film 56 and the second fluorescent film 57 constitute 89100464.ptd Page 10 518402 5 7. Description of the invention (7) The finished phosphor emits light and uses ice # 口 邻 5 S # 古 筮 9 ** 丄 to emit light at the end. It is characterized by the light brain in the opening f58Sx, so the opening 58 The light generated by the luminescence is also emitted. The film 5: when the opening 58 does not enter and cut, it cannot emit light: f / degree, but if the thickness of the second fluorescent film 57 becomes thick. The thickness of the second glorious film 57 is made larger than the others, and its degree is a large feature. When i represents the thickness of the i-gloss film 56 and v represents the thickness of the second fluorescent film 57, The thickness Vw 'of the fluorescent film of the mouth portion 58 is: The thickness of the fluorescent film provided on the inner periphery of the reflective film 55 becomes: u + v *. The thickness of the fluorescent film of the side opening portion 58 is preferably a reflective film The thickness of the redundant film is less than 1/2 of the degree and greater than 0, and preferably a thickness of 1/2 to 1/8. The light generated from the fluorescent film is reflected by the reflective film 55 to illuminate the end of the guide The width of the irradiated surface 66 of the end portion of the light guide 64 irradiated with light is hereinafter referred to as the width X of the irradiated surface 66. In addition, the width of the light emitted from the opening 5 8 is referred to as the opening 5 8 below. The amplitude Y. When the amplitude χ of the irradiation surface 66 is 100%, the amplitude Y of the opening 58 is 55% to 100%, preferably 60% and 9 5%. The reason will be described below. Figure 3 It is a characteristic diagram used to indicate the use of a discharge lamp 71 with a tube diameter d of 2.0 mm, 2.6 mm, 4.0 mm, and 4.6 mm, so that the thicknesses of the fluorescent films of these lamps are ^: the same and matched The characteristics of the diameter of the lamp tube when the discharge is turned on with the same current density. Foot 1 In Figure 3, the horizontal axis represents the lamp opening amplitude ratio. The lamp opening amplitude ratio refers to 1/2 of the diameter of the lamp tube. Opening width That is, the same value as the radius & long-sounding 疋 opening width) is the value indicating the opening width when it becomes 100%. Also, X's 89100464.ptd Page 11 518402 V. Description of the invention (8) That is, in FIG. 2 In the case where the width Y of the opening portion 58 is Y = D / 2, the opening width ratio is 100%. In FIG. 3, the vertical axis represents the lamp surface luminance ratio of the opening portion 58. On the vertical axis, Y = In the case of D / 2, the brightness of the lamp surface is 100%, which is used to indicate the value of brightness. The value shown in Fig. 3 is an average value measured by changing the lamp tube diameter d by four types. As can be understood from Fig. 3, when the lamp opening amplitude ratio becomes smaller, the lamp surface brightness ratio becomes higher. According to FIG. 3, when the width Y of the opening portion 58 shown in FIG. 2 becomes smaller, the brightness of the light incident on the light guide 64 is the same. The value of the amplitude Y of the human-receiving opening 58 is measured for the brightness of the light actually emitted from the light guide 64. The results are shown in Fig. 4. Figure 4 shows the relationship between the width of the lamp opening and the brightness of the light guide. In Fig. 4, the 'horizontal axis' indicates the lamp opening amplitude ratio with respect to the thickness of the light guide 64. That is, "'represents the ratio of the width (opening width) γ of the opening portion 58 to the field X of the irradiated surface 66. In FIG. 4, the vertical axis represents the brightness of light emitted from the surface of the light guide to which the light guide μ and the LCD 63 are bonded. The vertical axis indicates the brightness of light emitted from the surface of the light guide when no opening 58 is present in the lamp (that is, when a discharge lamp in which a fluorescent film is entirely coated on the inner periphery of the lamp is used). The characteristic shown in FIG. 4 is obtained by separating the light guide 64 and the discharge lamp 71 from 0; 0.4 to 0.4 mm. In addition, in the case where the thickness of the light guide 64 is reduced, the test lamp tube diameter D is 2 mm and 2. 6 mm. When the thickness of the light guide 64 is 4 mm, the test tube diameter D is 4 mm and 4.6 mm. In addition, the thickness of the fluorescent film was matched to the diameter D of the lamp, and a test was performed to adjust the current density of the diameter D of the lamp. As shown in FIG. 4, when the brightness of the surface of the light guide exceeds 100%, the width Y of the opening 58 is in the range of about 55% to 100% of the width X of the irradiation surface.

Η 89100464.ptd Page 12 518402 V. Description of the invention (9) When the s redundancy becomes south, the width γ of the opening 58 is 6 to 95% of the width X of the irradiation surface 66 ° Especially 70% to 80% Become the highest brightness. FIG. 5 shows a case where the width γ of the opening portion 58 is 55% of the axiality X of the irradiation surface 66. Fig. 6 shows a case where the width γ of the opening 58 is 75% of the width X of the irradiation surface 66, that is, the case where the brightness of the surface of the light body 64 is the highest. Fig. 7 shows a case where the degree Y of the opening portion w is 100% of the width X of the irradiation surface. According to the above-mentioned method, the reflection γ is used to make the width of the opening portion 58 to be 55% to 100% (preferably 60% to 95%) of the width X of the irradiation surface 66. The light reflected by the film 55 is effectively irradiated on the irradiation surface 66, and high-brightness light can be emitted from the light guide 64. It can be understood from the characteristics shown in FIG. 3 that when the width γ of the opening portion 58 becomes smaller, “the brightness of the lamp surface increases, and effective irradiation can be performed against the surface 66”, but this is not the case, as shown in FIG. 4, With respect to the degree of fullness of the light guide 6 4, that is, the magnitude of the width X of the irradiation surface 66, by appropriately selecting the magnitude of the width Y of the opening portion 58, high-brightness light can be obtained. In the conventional technique, the ratio of the amplitude X of the irradiation surface 66 to the amplitude γ of the opening portion 58 is emphasized, without increasing the brightness of the light emitted from the light guide 64. The most significant feature of the present invention is that it is used to obtain high-intensity light based on the ratio of the width X of the irradiation surface 66 to the width γ of the opening 58. In addition, the present invention is characterized in that a second fluorescent film 57 is formed. In addition, the second fluorescent film 57 is made thinner than the first fluorescent film 56. An opening portion 58 is formed, and a second fluorescent film 57 is formed on the entire inner periphery thereof, and a thin fluorescent film is formed on the opening portion 58. If the second fluorescent film 5 7 is not produced at the opening 5 8, all light emission cannot be performed at the opening 58. Moreover, the opening portion 58

89100464.ptd > 18402 Wula invention description (ίο) I it is easy to become cold, because it is lit in the atmosphere or moisture will be anti-deer with mercury ^ J the traces of the night, carbon compounds and other pollution Substances; easy water f oxides, and degradation of light transmittance. That is, Yi = opening portion 58 ', so it will create 2 glorious film 57, which can prevent the inner surface of the two: holding bright. The light emitting effect is also performed in the opening portion 58 through the opening, and in the opening portion 58 in the wood. The special effect can be used to improve the emission of light. Figure 8 shows that for the discharge lamp with the present invention, the V degree of the opening part is: =; The comparison of the amplitude of the surface 66 also matches the characteristics of a lamp that displays a light-emitting film. The use of the second fluorescent film, ,, and ° does not form a 2 ^ fluorescence time and reduces the decrease in brightness. Also, the sub- 'can increase the lighting, and has the effect of maintaining brightness when the sun and the moon are white. 2 The second light-emitting film can be used for 2.6 coffee. 『Yuebai. In addition, the diameter D of these lamps is that when the second fluorescent film 57 is too thick, _π plus c0 is reduced, so the second fluorescent film 57 is best. / cm2 made of glorious body; the thickness of the first layer of at least 0.5mg / cm2 made by coating, is made of at least O.Smg / cM coating. The thickness of the first = 1 The thickness of the light-emitting film is preferably equal to the thickness of the first

Second "The second temple's light transmittance will decrease", and when it becomes more than ι /; ^ degree J 2 ', the luminescence of the first film will decrease. In addition, in the above implementation, the first one made the diameter of the lamp!) Become 2.0_, 26_, 4 ,. _, 4: 2: 89100464.ptd Page 14 518402 V. Description of the invention (π) is that if the lamp diameter D is in the range of 1.5mm to 6.5mm, the same effect can be obtained. In addition, 'the distance between the discharge lamp 71 and the light guide 64 is 0.2 to 0 · 4 mm', which can improve the incidence efficiency of light. It is better to leave the lamp tube 54 and the irradiation surface w slightly apart from the contact. To ensure this distance z, a transparent rubber ring 53 is provided. That is, the task of the transparent rubber ring 53 is to separate the lamp tube 54 and the irradiation surface 66 from a desired distance, and to prevent the lamp tube 54 from being shaken or impacted, as its two tasks. 3%。 Let the distance Z become 0.2mm, at this time the lamp diameter D becomes 15mm, then the distance Z becomes 13.3% of the lamp diameter D. The diameter 4 of the lamp tube D becomes 1.5 mm. On this day, the diameter D of the lamp tube D becomes 6.5 mm. In addition, if the distance Z is 0.4 mm, the distance Z becomes 2 6.6% of the diameter d of the lamp. 1%。 Distance Z becomes 0.2 mm, then the distance Z becomes 3.1% of the lamp tube diameter d. Let the distance Z be 0.4 mm. At this time, the lamp tube 栌 D, & ρ Γ ZZ becomes 6.2% of the lamp tube ㈣. If 仏 D becomes 6.5_, the distance can be judged as 27% in this way. The best is 7% ~ 20%. e U ~ In the above example, the one shown is a transparent one, but instead of the transparent rubber ring 53, it is also possible to make the lamp 54 away from the irradiation surface 66 by a specified distance. 设: set: interval Those with a material ring can also be constructed as simple protrusions or rods: not limited to FIG. 9 is the flow K, which is used to represent the discharge system of the present invention. First, at S41, the inverse == method is formed in the tube 54. π 潘 b5. The reflective film 55 is m 89100464.ptd page 15 518402 V. Description of the invention (12) It is formed in the entire inner periphery of the lamp tube 54. Next, in S42, a first fluorescent film 56 is formed inside the reflective film 55. For example, the first fluorescent film 56 is formed by applying a phosphor of 4 to 8 n] g / cm2. In this way, a brother 1 fluorescent film 56 having a thickness of 0 shown in FIG. 2 is formed. The first fluorescent film 56 is formed on the entire inner periphery. Next, sintering is performed at S43. Next, in S44, an opening portion 58 is formed. The formation of the opening portion 58 is performed physically, and the reflection film 55 and the i-th fluorescent film 56 are cut away along the axis of the lamp tube 54 from the band-shaped portion. It can also be constructed using chemical effects such as etching. Next, in S45, a second fluorescent film 57 is formed. For example, the second phosphor film 57 is formed by making the phosphor to 0.5 mg / cm2. In this way, a second fluorescent film 57 having a thickness U other than that shown in Fig. 2 is formed. The second fluorescent film 57 is the entire inner periphery. Sintering is then performed at S46. Then, in the same manner as the conventional manufacturing of the waste, the exhaust is performed in S47, the rare body or mercury is sealed in S48, the sealing is performed in S49, the lamp cap is added, and the electrode 59 is added to complete the manufacture of the discharge lamp. iT 实施 例 2. For those not shown in the figure, the reflective film 55 may be provided outside the lamp tube 54. In addition, the reflective film 55 and the i-th fluorescent film 56 may be provided outside the lamp tube 54. The figure shows a case where the cross section of the lamp tube 54 is oval. By making the cross section of the lamp officer 54 an ellipse, the length in the direction of the arrow a can be made shorter. In addition, since the surface area inside the lamp tube 54 is increased, the amount of the light body is increased, so the intensity of the light can be further increased. Fig. 11 shows a case where a straight portion is provided in the cross-sectional shape of the lamp tube 54 and an opening portion 58 is provided in the portion.

Page 16 _464.ptd 518402 V. Description of the invention (13) In the case shown in Figure 11, the length in the direction of arrow B can be made smaller. In addition, in the above-mentioned embodiment, the case of using a discharge lamp for a back lamp is shown. However, the present invention can also be applied to a reading light source for a device other than a discharge lamp for a back lamp. For example, it is also suitable for a reading light source installed in a scanner, a photocopier, or a facsimile device. In particular, it is particularly effective to use the present invention for those who have a limited width of the irradiated surface for knowing and emitting light. Foe lamp In addition, the discharge lamp of the present invention can also be adapted to the conventional structure shown in FIG. 2 and FIG. 1. 0 is not the [effect of the invention]

As described above, in accordance with the present invention, the width X of the radiating surface 66 of the opening portion 58 is designated as 銮 ding w, good-ancient 4 contrast. In addition, according to the present invention, Japan, Japan, Japan, and Japan. Radon can be effectively irradiated. Inquiry Zero Card In addition, according to the present invention, because of the parts, the discharge is used. [Explanation of the component number] A device that does not require a special lamp around the discharge lamp can be reduced in size. 5 1 ... lead wire, 5 5 ··· reflective film, 5 6 ·· 58 ··· opening, 59 6 5 ···· reflective sheet, 66 6 8 ··· irradiation surface, 71 emission surface 6 8 Range, Υ transparent rubber ring, + edge light film, 57 ·· 2nd fluorescent film, · 63 ···· LCD, 64 ··· light guide I ·· ^ diffuser, 67 ··· lens , • · Electric lamp, η lamp diameter, X ..

Open range 58

518402 Brief description of drawings [Simplified description of drawings] Fig. 1 is a perspective view of a discharge lamp 71 of the present invention. Fig. 2 is a cross-sectional view of a discharge lamp 71 and a back light device according to the present invention. Figure 3 shows the relationship between the lamp opening amplitude ratio and the lamp surface brightness. Figure 4 shows the relationship between the width of the lamp opening and the brightness of the light guide. Fig. 5 shows a case where the width Y of the opening portion 58 of the present invention is 55% of the width X of the irradiation surface 66. FIG. 6 shows a case where the width Y of the opening 58 of the present invention is 75% of the width X of the irradiation surface 66. FIG. 7 shows a case where the width Y of the opening portion 58 of the present invention is 100% of the width X of the irradiation surface 66. FIG. 8 shows the change in the brightness with time of the ratio of the width Y of the opening portion of the discharge lamp 71 to the irradiation surface X of the present invention at 60%, 75%, and 95%. Fig. 9 shows a method for manufacturing the discharge lamp 71 of the present invention. FIG. 10 shows another structure of the discharge lamp 71 of the present invention. FIG. 11 shows another structure of the discharge lamp 71 of the present invention. Fig. 12 shows a conventional lighting device. Figure 13 shows a conventional lighting device.

89100464.ptd Page 18

Claims (1)

518402 ^ V e Case No. 89100464 6. Scope of patent application 1. A discharge lamp, which is provided with a designated reflective film S, and is irradiated with a radiant and A-radiation radiated from the above-mentioned opening portion with respect to a surface to be illuminated ~ …, Chi You, 1 · The above openings are relative to the irradiated light. “$ 1 · Has an opening width γ of 55% to 100%, and the amplitude of the A radiation surface X ′ is on the inside of the reflection film and on the openings. Apply a candle with a phosphor of 0.5 mg / cm1 or more, and cut it into a *, light film, and at least a light film, and make the thickness of the fluorescent film at the openings, and the fluorescent light of the openings. The thickness of the film is 1/8 to 1/2.… The inside of the reflective film 2 · If the discharge lamp in the scope of patent application No. 1 has a ratio of 60% to 9 '/ Describing the opening width 3. For example, the discharge lamp of the first patent application scope, A ◦ of the towel field. The diameter of the lamp tube is 1. 5mm ~ 6. 5mm. The discharge lamp of the item, A 〆, 卞, snow lamp for earthwork, is set with the lamp tube to be separated from the illuminated surface of the lamp tube. light 89100464.ptc 10% distance method, with manual spacers on the outside of the lamp. 5. A method for manufacturing a discharge lamp, which comprises the steps of: forming a reflective film on the entire inner periphery of the lamp tube; forming the first fluorescent intestine on the entire inner periphery of the reflective film; At the same time, the above-mentioned reflective film and the upper and lower sections of the lamp tube are simultaneously removed into a strip shape to form an X with an opening width of 55% to 100% relative to the two X of the fluorescent film. Band-shaped opening < 田田 叩 w; and after the above-mentioned opening is formed, the entire inner circumference of the lamp tube to a small cold 0.5 mg / cm1 or more phosphor is applied, and the opening is coated with red Fluorescent film thickness 518402 _Case No. 89100464_Year Month and Date__ Sixth, the scope of patent application is to form the second fluorescent film in such a way that the thickness of the fluorescent film on the inside of the reflective film is 1/8 to 1/2. . 6. —A device using a discharge lamp is a person who uses a discharge lamp in the scope of patent application No. 1. 7. —A device using a discharge lamp, which is manufactured by a method for manufacturing a discharge lamp using item 5 of the scope of patent application. Participate 89100464.ptc Page 20 2001.02.13. 020