KR840002454B1 - A fluorescent lamp - Google Patents

Abstract

The fluorescent lamp comprises a two part of spherical globe. Both halves of the globe are mounted in a clear plastic material with each containing holes or slots to permit the circulation of the cooling air. In the upper part, the screw lamp base is formed together with an internal structure comprising the support for the lamp and the ballast. The fluorescent lamp together with all its ancillary gear is housed within the globe to make it a complete replacement unit for incandescent lamp with no necessity to change the fittings or wiring.

Description

Manufacturing method of curved fluorescent lamp

1 is a perspective view showing a state in which a fluorescent lamp is accommodated in a glove,

2 and 3 are cross-sectional views respectively viewed from different directions,

4 is a cross-sectional view showing an enlarged main part,

5 (a) to 5 (f) are process explanatory diagrams showing the method of the present invention according to the process sequence.

The present invention relates to a method for producing a curved fluorescent lamp that is curved in a saddle shape.

Recently, fittings of a twisted type such as the E26 type, which are commonly used for ordinary incandescent lamps, are mounted on fluorescent lamps, and ballasts and lighting circuits are inserted to ensure compatibility with incandescent lamps. What is being developed is being developed.

However, such fluorescent lamps need to be as compact as possible in order to obtain dimensional compatibility with the white light bulb, so that the center of the straight valve is bent approximately U-shaped, and both ends thereof are substantially flat with the U-shaped plane described above. The size of the outer dimension is reduced by using a substantially saddle-shaped valve that is bent in a substantially U-shape in the orthogonal direction.

When manufacturing a valve of such a curved fluorescent lamp, a fluorescent film is formed in advance on the inner surface of the straight valve having both ends opened, and then the center of the straight valve is bent in a substantially U-shape and the ends thereof are described above. When the U-shape is bent in a direction substantially in close contact with the plane including the U-shape, the phosphor film is elongated on the outside of the bent portion, and the film is thinned on the outside. There was a bad condition.

Further, as described above, the straight pipe is bent in a saddle shape in advance, and then both openings of the valve are directed upward, and both openings of the valve having the phosphor solution applied to the inner surface of the valve are directed upward from both openings. It is conceivable to form a phosphor coating by coating the phosphor solution on the inner surface of the valve at both end openings and then drying it, but in this way, the phosphor solution is desired to stay in the curved portion of the valve while it is being dried. Therefore, when the phosphor solution is dried in this state, the outer film thickness of these curved parts becomes thick, and the phosphor film of this part is easily peeled off, and the film thickness is unbalanced, resulting in uneven luminance distribution. There was a condition.

The present invention has been made in order to eliminate the bad state as described above, the object of the present invention is that the film thickness of the phosphor film of the bent portion of the curved valve, although the valve is curved in the shape as described above It is possible to prevent thickening, to form a phosphor film having a substantially uniform film thickness on the inner surface of the valve, and to obtain a curved fluorescent lamp that is easy to manufacture.

Next, a curved fluorescent lamp made according to the method of the present invention will be described with reference to FIGS. 1 to 4.

部)(5)…를 플랜지부(3)에 설치한 요부(

部)(6)…에 착탈가능하게 감합함으로서 연결 고정되고 있다.(1) in the figure is a base formed in a main shape, and in one of these centers, a detent 2 of a twisting type such as E26 type is attached. In addition, for example, a white glove 4 is attached to the flange portion 3 provided on the base 1 and the other opening circumference, and the glove 4 and the flange portion 3 glove each other. Attached to the opening periphery of (4)

(5)... To the flange (3)

(6). It is connected and fixed by fitting in and detachably.

A partition plate 7 partitioning the inside of the glove 4 and the base 1 is provided at an opening outside the base 1, and the partition plate 7 is screwed on the outside of the base 1. Screw member 8 to be mounted; It is fixed by. The surface of the glove 4 side of the dividing plate 7 forms a reflecting surface, and a curved fluorescent lamp 9 positioned in the glove 4 is fixed to the reflecting surface side.

The surface of the glove 4 side of the partition plate 7 forms a reflecting surface, and a curved fluorescent lamp 9 positioned in the glove 4 is fixed to the reflecting surface side.

The valve 10 of the fluorescent lamp 9 is bent as follows. That is, the straight valve having both ends opened is bent in a substantially U-shape at the center thereof to form a central bent portion 10a, and both ends thereof are substantially perpendicular to a plane including the center bent portion 10a described above. It is bent in a substantially U shape to form both ends bent portions 10b and 10b, which are curved in a saddle shape as a whole.

In this way, a fluorescent film 11 is deposited on the inner surface of the curved valve 10, and mounts 12 and 12 are attached to the openings at both ends. And this curved valve | bulb 1 is being fixed so that the opening part of both ends, and the center bend part 10a may face the partition plate 7.

Moreover, the divider 7 is arrange | positioned so that the stabilizer 13 may be surrounded by said curved valve | bulb 10, and the outer peripheral surface of the base 1 has a some which communicates inside and outside this base 1, Vent hole 14... Several of these are open.

Thus, a chip portion 15 which protrudes in the central bent portion 10a of the above-described curved valve 10 in a direction substantially perpendicular to the outer side, that is, along the opening direction of both end openings of the valve 1. Is formed.

The tip portion of the chip portion 15 is led through the dividing plate 7 to be introduced into the base 1.

Therefore, the chip portion 15 is cut off from the heat in the glove 4 and at the same time, the vent hole 14... It is cooled by outside air circulating through.

In addition, a predetermined amount of water temperature and an inert gas are enclosed in the curved valve 10 described above. Needless to say, the national filaments 16 and 16 of the mounts 12 and 12 are connected to the detention 2 with the stabilizer 13 interposed therebetween.

Thus, according to the embodiment of the present invention configured as described above, the chip portion 15 provided in the central bent portion 10a of the curved valve 10 is cut off the heat in the glove 4 and at the same time the base 1 By being cooled by the outside air circulating inside, the temperature of the chip portion 15 becomes lower than the tube wall temperature of the valve 10 in the glove 4.

In addition, since the central bent portion 10a is spaced apart from both ends of the valve 10, which generates the most heat, the pipe wall temperature is relatively low. Thus, the above-mentioned facts summarize the water temperature in the chip portion 15 and its vicinity. The vapor pressure becomes low, making it particularly easy to condense in the chip section 15. For this reason, the water temperature steam pressure in the valve 10 is not affected by the temperature of the chip portion 15 and is not very high, and the density of the water vapor in the discharge space is regulated.

Therefore, the valve 10 in the glove 4 is accommodated and turned on at a high temperature, so that the water temperature in the tube can maintain the vapor pressure at approximately the most suitable value, and can reliably prevent a decrease in the lighting efficiency of the lamp.

In addition, by providing the chip portion 15 in the central bent portion 10a of the curved valve 10, there is no need to install an exhaust pipe in the mounts 12 and 12, and the mounts 12 and 12 are provided. And it is possible to simplify the manufacturing process of the lamp.

The curved fluorescent lamp of the present invention is not limited to the above embodiment.

For example, the temperature of the water vapor may be suppressed by enclosing amalgam A in the patch as indicated by the dashed line in FIG.

That is, Malgam A is known to have added water temperature to indium, gardium, lead, zinc and the like, and among those listed above, the addition of water temperature to indium is particularly easy to form water temperature and alloy.

Therefore, even if the ambient temperature of the valve rises and the water vapor pressure rises, the partial pressure drop is suppressed by the amalgam A described above.

For this reason, the water temperature steam pressure can be maintained at an approximate value, and the chip portion can be expected to have further effects by adding that the water temperature steam is easy to condense as described above.

Next, the shape as described above will be described with reference to Figs. 5A to 5F for the method of manufacturing a bimodal curved fluorescent lamp.

First, as shown in FIG. 5 (a), the central bending scheduled portion 10a 'and the both-sided bending preliminary portions 10b' and 10b 'of the red tube valve 10' having both ends opened to Hiita et al. By heat softening.

Subsequently, the process of bending the valve is performed, and as shown in FIG. 5 (b), the above-described central bending predetermined portion 10a 'is bent substantially in a shape of a magnet to form a central bending, 10a'.

The both ends of the bend preliminary sections 10b 'and 10b' are bent in a substantially U-shape in a direction substantially orthogonal to the plane including the central bend 10a, thereby forming both ends bends 10b and 10b. And a substantially saddle-shaped curved valve 10 as shown in FIG. 5 (c).

In this case, the both ends bent portions 10b and 10b may be formed first, and then the center bent portions 10a may be formed.

Subsequently, in the exhaust pipe connecting step, the one end of the central bent portion 10a and the exhaust pipe 21 is softened by heat, and they are brought into contact with each other so that the exhaust pipe 21 is roughly formed as shown in FIG. Weld welding is carried out so that it may protrude vertically outward along the opening direction of one end opening.

While directing the openings at both ends of the valve 10 upwardly, a phosphor solution injection nozzle is inserted into the valve 10 at the openings at both ends, and the phosphor is coated on the inner surface of the valve 10 described above.

In this case, for example, the attitude of the valve 10 is reversed so that the above-mentioned fluorescent solution is filled almost uniformly on the entire front surface of the valve 10. Immediately after such an application step is completed, both end openings and the exhaust pipe 21 of the valve 10 are directed downward substantially vertically, and both end bends 10b in the valve 10 are passed through the openings at both ends. Excess phosphor solution present in the portion extending from the opening to both ends at 10b is discharged to the outside, and is present at the portion extending from the bent portions 10b and 10b to the central bent portion 10a via the exhaust pipe 21 described above. The excess phosphor solution is discharged to the outside to remove, i.e., a removal process is performed. Thereafter, a drying step of drying the phosphor solution applied to the inner surface of the valve 10 is performed, and the phosphor film 11 having a film thickness is formed on the inner surface of the valve 10.

Subsequently, in the encapsulation process, as shown in FIG. 5 (e), the mounts 12 and 12 are inserted into the openings at both ends of the valve 10, and both of them are heated and adhered freely. 21) The valve 10 is evacuated to a vacuum state.

Then, the water temperature and the inert gas are sealed in the valve 10 where the exhaust is completed. After the sealing is completed, the process proceeds to the cutting process, where the end portion of the central bent portion 10a of the exhaust pipe 21 is heated, hermetically melted, cut and sealed, as shown in FIG. 5 (f). The curved fluorescent lamp 9 is completed by forming the chip portion 15 in the shape of the chip.

Thus, according to the above method, first, a sufficient phosphor solution is applied to the inner surface of the valve 10 that is curved in a roughly saddle shape, and then the excess in the valve 10 is passed through both end openings of the valve 10 and the exhaust pipe 21. The phosphor solution is removed, and then the phosphor solution applied to the inner surface of the valve 10 is dried to form the phosphor coating 11, so that the phosphor solution is spun in the shape as described above. The film thickness of the phosphor coating 11 formed on the inner surface of the valve 10 is not uniformly stayed in the angular flexion portion 10 described above.

Therefore, peeling by the local increase in the thickness of the phosphor coating 11 can be prevented, and the luminance distribution of the valve 10 can be made substantially uniform.

In addition, it is not necessary to install exhaust pipes in the mounts 12 and 12 which are relatively complicated in structure, and thus, the manufacturing process of the mounts 12, 12 and the lamp 9 can be simplified.

According to the method of the present invention, the valve is bent into a substantially saddle shape, the exhaust pipe is projected to the center bent portion thereof, and then the phosphor solution is applied to the inner surface of the valve, and then the excess pipe in the valve is passed through the exhaust pipe and openings at both ends of the valve. The phosphor solution was removed, and then the above applied phosphor solution was dried to form phosphor peaks. Thus, even though the valve was curved in the above-described shape, the center solution or the like was formed in the curved portion. Local staying is prevented, and the film thickness of the formed film formed on the valve inner surface becomes substantially uniform. Therefore, undesired peeling of the phosphor coating can be prevented, and the luminance distribution of the valve can be roughly equalized, and further, the exhaust pipe is not required to be mounted on the mount. It shows an excellent effect such as being simplified.

Claims (1)

The tubular valve, which is open at both ends, is bent in a substantially U shape at the center thereof to form a central bent portion, and both ends thereof are bent in a substantially U shape in a direction substantially orthogonal to a plane including the U-shaped center bent portion described above. A valve bending step of forming a pipe, an exhaust pipe connecting step of projecting an exhaust pipe so as to protrude outward along the opening direction of the openings at both ends described above, and an application of applying a phosphor solution to the inner surface of the curved valve. A step of removing the excess phosphor solution in the valve outwardly through the openings and exhaust pipes of the both ends by directing the openings and the exhaust pipes of the valves approximately vertically downward after the completion of the coating step; The phosphor solution applied to the inner surface of the valve is dried to form a phosphor coating on the inner surface of the valve. And a sealing step of mounting the mounts at the openings at both ends of the valve, and then evacuating the inside of the valve through the exhaust pipe, and enclosing the water temperature and the inert gas in the valve where the exhaust is completed. A method of manufacturing a curved fluorescent lamp comprising a process of melting, cutting and sealing the exhaust pipe after the end to protrude a patch to the central bent portion, and sealing and cutting off the exhaust pipe.

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