KR100613894B1 - A headlight lamp manufacturing method - Google Patents

Abstract

The disclosed headlamp lamp manufacturing method includes a glass tubulating step of making a double-ended glass tube; Inserting the filament and the filament support support into the glass tube to create a lamp; A first pinch sealing step of pinching one end of the lamp; Evacuating the interior of the primary pinch sealed lamp; And a second pinch sealing step of pinching the other end of the lamp in a vacuum state. The headlamp lamp manufacturing method of the above configuration provides power to both ends of the headlamp lamp to dissipate the heat concentration phenomenon of the sealing portion, thereby reducing the leakage phenomenon and the foot crack phenomenon.

Description

A headlight lamp manufacturing method

1 is a cross-sectional view showing a conventional headlamp lamp;

2a to 2h are views sequentially showing the headlamp lamp pinch sealing step of FIG.

3a to 3d are views sequentially showing the headlamp lamp exhausting step of FIG.

4 is a flowchart illustrating a manufacturing process of a headlamp lamp according to the present invention;

5A to 5G sequentially illustrate the glass tubing step of the flowchart of FIG. 4;

6a to 6c are views sequentially showing the first pinch sealing step of the flowchart of FIG. 4;

7a to 7c are views sequentially showing the exhaust step of the flow chart of FIG.

8A to 8D are views sequentially illustrating the secondary pinch sealing step of the flowchart of FIG. 4.

<Description of the symbols for the main parts of the drawings>

200 ... glass 300 ... collet chuck

400 .... mold 500 .... glass tube

600 .... Lamp 700 .... Exhaust Vacuum Head

800 ... liquid nitrogen 900 ... pinching equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a headlamp lamp for an automobile, and more particularly, to a method for manufacturing a double ended type headlamp lamp in which conductive parts are dispersed to supply power to left and right ends, respectively.

Generally, headlamp lamps for automobiles use halogen lamps to maintain the brightness for a long time and the life of the lamp.

As such a headlamp lamp for automobiles, a structure as shown in Fig. 1 has been generally employed.

As shown in the figure, the lamp capsule of the halogen lamp having the filament 12 provided therein has a vertical central axis of the filament 12 point light source, and the shape of the lamp 11 surface is vertically parallel. It has a straight tube type. In addition, the filament support for heat generation of the light source is integrated by the external DC power supply unit 14 and the support structure 13 so that one part of the lamp 11 is thermally melted from the outside to pinch seal the inside. The support structure 13 was made into the structure which can support the inside of the lamp 11.

The method for manufacturing the headlamp lamp of the straight tube type is performed in the order as shown in FIGS. 2A to 2H and 3A to 3D.

First, Figures 2a to 2h shows the pinch sealing process of the headlamp lamp.

Looking at the process, first, for the glass tubulating work of the headlamp lamp (Glass tubulating), as shown in Figures 2a and 2b quartz exhaust pipe 20 and the tube tube (bulb tube 30) of different sizes according to a predetermined standard Cut.

Second, in order to remove foreign substances such as glass powder and oil when the two kinds of cut tube 30 and the exhaust pipe 20 inside and outside the solution 40, the ammonium fluoride cleaning solution is added as shown in Figure 2c Precipitate in, washed, and dried.

Third, as shown in FIG. 2D, one end of each cut and dried valve tube 30 and the exhaust pipe 20 is heated and molded with a burner 80 to be bonded to each other, thereby forming a glass tube 50. )

Fourth, the plastic working and welding work of the support structure 13 for fixing or supporting the filament 12, which is a light source, at a proper position in the valve tube 30 are performed by a stemming & mounting process. It is done separately.

Fifth, after inserting the stemming and mounting form 70 of Figure 2h into the glass tube 50 worked in the third process as shown in Figure 2e, set the height of the filament light source to the standard height and the valve lamp sealing portion (61) ) Is heated and molded from the outside to the burner 80.

Sixth, in order to prevent oxidation of the internal filament 12 and the support support 13 due to the conducted heat during the external heating operation of the lamp 60 and to maintain working conditions, the lamp 60 is cooled until the temperature of the lamp falls below a certain temperature. In order to function, as shown in FIG. 2F, an appropriate amount of gas protective gas (N ₂ ; A) is supplied through the exhaust pipe (30).

Seventh, as shown in FIG. 2G, the sealing structure 61 is heated and melted outside of the lamp 60 at an appropriate temperature or more, thereby fusion-sealing and the support structure 70 therein is positioned within the effective range within the lamp 60. Do it.

Next, FIGS. 3A to 3D show the exhausting process of the sealed headlamp lamp.

Looking at the process, first, the exhaust pipe 20 side of the headlamp lamp 60 sealed as shown in Figure 3a is inserted into the vacuum suction line head inlet 100 of the exhaust (omitted) to maintain the airtight with the vacuum pump (omitted) After that, start the exhaust operation.

Secondly, the first low vacuum exhaust operation is performed within the range of 5 × 10 ⁻² Torr.

Third, as shown in FIG. 3B, the lamp is turned on in a hydrogen stream for removing impurities from the inner wall of the lamp, foreign matter attached to the outside of the filament 12, the support support 13, and the like. 60) Preheat work.

Fourth, secondary high vacuum evacuation is performed at 5 × 10 ^-4 Torr or less.

Fifth, the halogenated compound gas (C) mixed with an inert gas and an appropriate ratio is introduced into the lamp 60 at a predetermined pressure, as shown in FIG. 3c, and then the lamp 60 is opened with the liquid nitrogen gas 90 from the outside of the lamp 60. Precipitation cooling condenses the volume by bringing the internal pressure of the lamp 60 below atmospheric pressure.

Sixth, the appropriate exhaust pipe 20 position is cut by the heating burner 80.

Through such a pinch sealing operation and the exhaust operation, the headlamp lamp for automobile of the straight tube type is completed.

However, the headlamp lamp for automobile manufactured by the process as described above has a large amount of light loss due to the large diffuse reflection rate of light energy emitted from a point light source, and heat is concentrated to the sealed part of the headlamp lamp when power is supplied. Occurs, and there is a problem in that a high rate of occurrence of a sealing part leak phenomenon and a bulb crack phenomenon occurs during lighting.

The present invention was created in order to solve the above problems, the headlamp lamp is made in a double-end type structure to reduce the sealing part leakage phenomenon and foot crack phenomenon by dispersing heat to both ends of the headlamp lamp when the power supply It is an object of the present invention to provide an improved method of manufacturing a headlamp lamp.

In addition, another object of the present invention is to provide a method of manufacturing a headlamp lamp whose structure is improved to reduce the amount of light by reducing the diffuse reflection rate of light energy emitted from a point light source when the headlamp lamp is turned on.

The present invention for achieving the above object, the glass tubing step of making a double-end glass tube, the step of making a lamp by inserting the filament and the filament support support into the glass tube, and pinch sealing one end of the lamp And a first pinch sealing step, an exhausting step of making the inside of the first pinch sealed lamp into a vacuum state, and a second pinch sealing step of pinching the other end of the lamp in the vacuum state.

In addition, the glass tubing step, after cutting the glass to a certain standard, washing the inside of the glass tube with a nitrogen gas, and fixed to the rotatable collet chuck of the tubing machine by fixing both ends of the glass at a constant rotation ratio Rotating the furnace, heating and melting the central portion of the glass rotated by the rotating part with a heating burner, and applying pressure toward the central portion of the molten glass from the collet chucks on both sides to titrate the volume of the glass. A step of making a size, the step of closely contacting the mold for forming the inner side of the oval groove in the upper and lower portions of the molten glass, and simultaneously applying a predetermined air pressure to both sides of the glass to the molten glass inside the mold for molding It is preferable to include the step of forming to a uniform thickness.

In addition, the primary pinch sealing step may include melting one end of the lamp with a heating burner, fusion pinching the molten portion and the support support inserted into the lamp, and removing the lamp tube having an unnecessary length. And cooling the heated lamp by the gas protective gas supplied through the tube of the lamp.

In addition, the evacuation step may include the step of inserting the primary pinch-sealed lamp into the evacuator vacuum head and then performing low vacuum, and removing the foreign matter attached to the outside of the filament and the support support and the impurities in the low vacuum lamp. Turning on the lamp, washing with nitrogen gas and preheating the lamp externally, high vacuuming the lamp in which the cleaning and preheating work is completed, and encapsulating halogen gas in the high vacuum lamp and the halogen It is preferable to include a liquid nitrogen cooling step of the lamp outer part for reducing the encapsulated gas volume of the gas-enclosed lamp.

In addition, the secondary pinch sealing step of melting the other end of the lamp by a heating burner, fusion pinching the molten portion and the support support inserted into the lamp and removing the lamp tube of unnecessary length It is preferred to include the step.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a flowchart illustrating a manufacturing process of a headlamp lamp according to the present invention.

The present invention provides a glass tubing step (S1) for making a double-ended glass tube, a step of making a lamp by inserting the filament and the filament support support into the glass tube (S2), and pinch sealing one end of the lamp The first pinch sealing step (S3), the exhaust step (S4) for making the inside of the primary pinch sealed lamp in a vacuum state and the second pinch sealing step (S5) for pinching the other end of the lamp in the vacuum state Include.

First, in order to manufacture the headlamp lamp, the glass tubing work must be preceded, and the detailed process of the glass tubulating step S1 is shown in FIGS. 5A to 5G.

As shown, first cut the glass 200 by a predetermined standard as shown in Figure 5a. The cut glass 200 inside the tube is washed with nitrogen gas (D). This is to remove impurities or foreign substances present in the inner wall of the glass 200 tube. Subsequently, both sides of the glass 200 are fixed to the rotatable collet chuck 300 of the tubulating machine as shown in FIG. 5B and then rotated at a constant rotation ratio. In the side or the downward direction of the glass 200 is rotated as shown in Figure 5c the center of the glass 400 is heated and melted with a heating burner (hydrogen + oxygen; 80). Then, a constant pressure is applied such that the volume of the central portion of the glass 200 is larger than that of other portions from the collet chucks 300 on both sides as shown in FIG. 5D. At this time, a predetermined pressure is present inside the glass 200 to prevent sagging downward. As such, after applying pressure to the glass 200, a mold 400 having a parabolic groove formed therein is closely attached to the glass 200 as shown in FIG. 5E. In addition, as shown in FIG. 5F, a predetermined air pressure (E) is simultaneously applied to the tube of the glass 200 so that the molten glass 200 is molded to a uniform thickness inside the mold 400. The glass tube 500 in which the glass tubing operation is completed is illustrated in FIG. 5G.

After the glass tubing work is completed, the filament 12, the support support 13, and the like are inserted into the glass tube 500 (S2), and then the pinch sealing step is performed.

6a to 6c show the primary pinch sealing step (S3).

In the first pinch sealing step, as shown in FIG. 6A, one side of the lamp 600 is melted by the heating burner 80, and then the pinching equipment is inserted into the molten portion 620 and the support support 610 inserted into the lamp. Fusion pinching). And, as shown in Figure 6b to remove the lamp 600 tube unnecessary to make the finished product of the lamp 600. Finally, as shown in FIG. 6C, gas protection gas (N ₂ ; F) is supplied through the lamp 600 tube to cool the lamp 600 heated by the heating burner 80.

When the first pinch sealing step is completed, the next step is to exhaust.

7A to 7C show the exhaust step S4.

FIG. 7A first inserts the primary pinch sealed lamp 600 into the evacuator vacuum head 700 and first creates a low vacuum in the range 5 × 10 ⁻² Torr. In the low vacuum state, the lamp 600 is turned on in a hydrogen stream for removing impurities, foreign matters attached to the filament 630, and the support support 610, and the like, and washed with nitrogen gas (G) and the outside. Preheat lamp 600. After the cleaning and preheating operation is completed, the lamp 600 is made into a high vacuum state of 5 × 10 ⁻⁴ Torr or less as shown in FIG. 7B, and then halogen gas (H) is enclosed in the lamp 600. In order to reduce the volume of the encapsulated halogen gas (H), the lamp 600 is placed in the liquefied nitrogen 800 as shown in FIG. 7C.

After the evacuation step is completed, finally the secondary pinch sealing step is entered.

The secondary pinch sealing step S5 is illustrated in FIGS. 8A-8D.

As shown in FIG. 8A, the other side 640 of the primary sealed portion is melted by the heating burner 80, and the molten portion 640 and the support support 610 inserted into the lamp 600 are illustrated. Fusion pinching to the pinching equipment 900 as 8b. The fusion-pinched lamp 600 finally removes unnecessary portions as shown in FIG. 8C, thereby completing a double-ended headlamp lamp as shown in FIG. 8D.

The double-ended headlamp lamp completed through the above steps can reduce the amount of light loss due to the reduction of sealing site leakage phenomenon and the ball crack phenomenon due to heat dissipation during power supply and reduction of diffuse reflectance.

As described above, the headlamp lamp manufacturing method of the present invention provides the following effects.

First, a double-end lamp is produced, in which power is supplied to both ends of the lamp, and heat is distributed to both ends of the lamp when the power is supplied. Decreases.

Second, since the shape of the headlamp lamp is elliptical, the diffuse reflection ratio of the light energy emitted from the point light source is accommodated within the critical angle, thereby reducing the diffuse reflection ratio, thereby preventing the loss of light quantity and increasing the reflected light efficiency more than 20% without increasing the power consumption of the filament. To improve.

It is to be understood that the invention is not limited to that described above and illustrated in the drawings and that many more modifications and variations are possible within the scope of the following claims.

Claims (5)

In the manufacturing method of a double-ended headlight lamp for automobiles, A glass tubulating step of making a double ended glass tube; Inserting a filament and the filament support support into the glass tube to make a lamp; A first pinch sealing step of pinching one end of the lamp; Inserting the primary pinch-sealed lamp into the evacuator vacuum head and then performing low vacuum, and lighting in hydrogen stream for removing foreign matters attached to the lamp in the low vacuum state, outside the filament, and the support support. And washing the lamp with nitrogen gas and preheating the lamp from the outside, high vacuuming the lamp in which the cleaning and preheating work is completed, sealing halogen gas into the high vacuum lamp, and the halogen gas-sealed lamp. An evacuating step of vacuuming the interior of the primary pinch-sealed lamp, including a liquid nitrogen cooling step of the lamp exterior for reducing the encapsulated gas volume; And And a second pinch sealing step of pinching the other end of the lamp in the vacuum state. The method of claim 1, The glass tubing step may include: cutting the glass to a predetermined standard and then washing the inside of the glass tube with nitrogen gas; Fixing both ends of the cut glass to a rotatable collet chuck of a tubing machine, respectively, to rotate the glass at a predetermined rotation ratio; Heating and melting a central portion of the glass rotated by the rotating part with a heating burner; Applying pressure from the collet chucks on both sides toward the central portion of the molten glass to make the volume of the glass an appropriate size; Adhering a molding die having an inner elliptical groove formed in upper and lower portions of the molten glass; And And simultaneously applying a predetermined air pressure to both side tubes of the glass to form the molten glass in a uniform thickness inside the molding die. The method of claim 1, The first pinch sealing step may include melting one end of the lamp with a heating burner; Fusion pinching the molten portion and the support support inserted into the lamp; Removing the lamp tube of unnecessary length; And Cooling the heated lamp by the gas protection gas supplied through the tube of the lamp. delete The method of claim 1, The second pinch sealing step may include melting the other end of the lamp with a heating burner; Fusion pinching the molten portion and the support support inserted into the lamp; And Removing the lamp tube of an unnecessary length; headlight lamp manufacturing method comprising a.

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