KR100437712B1 - Construction of Filament for Halogen Lamp - Google Patents

Abstract

The present invention includes a lead (21) 22 arranged in parallel using a conductor; And a coil 23 formed in the middle of the leads 21 and 22 by using a conductor.

In this case, the distance WL of the leads 21 and 22 is maintained at 3.80 ± 0.3 mm, the coil 23 maintains the winding diameter CD at 1.20 ± 0.02 mm, and the coil 23 is totally wound. Maintain 18 TT.

As a result, the 12V-55W standard axial coil halogen lamp of an automobile can satisfy optimized conditions in terms of luminous flux and lifespan.

Description

Structure of Filament for Halogen Lamp {Construction of Filament for Halogen Lamp}

The present invention relates to a lamp for a vehicle, and more particularly to a structure of a halogen lamp filament for which a halogen lamp of the 12V-55W standard axial coil type of the automobile can satisfy the conditions optimized for luminous flux and lifespan.

In general, a light bulb for an automobile including a head lamp includes a halogen lamp, and a main structure includes a transparent enclosure, a filler injected into the enclosure, a conductor composed of leads and coils, an insulator supporting the leads, and the like. In addition, a reflector for improving the straightness of the irradiation light may be used.

Such automotive headlamps have a long lifespan, are inexpensive, and must maintain sufficient luminous flux, and the above-described individual specifications of the main components and the interrelated relationship have a significant influence on this.

Leads using tungsten or molybdenum and filaments using tungsten wires are conductors, and when a power is applied through the leads, electric current flows through the filaments with resistance, which generates heat and increases temperature.

At this time, the main function of the lamp (Lumen: Lm) refers to the amount of light felt by the eye, which is determined by various design elements of the main components including the filament and is related to the life time.

It is therefore an object of the present invention to provide a structure of a filament for a halogen lamp that can satisfy an optimized condition in terms of luminous flux and lifespan.

1 is a configuration diagram showing a conventional filament with its main dimensions,

2 is a configuration diagram showing the filament according to the present invention with the main dimensions,

Figure 3 is a block diagram showing a finished product to which the filament according to the present invention is applied.

Explanation of symbols on the main parts of the drawings

11, 21: first lead 12, 22: second lead

13, 23: coil 24: enclosure

25: terminal

In order to achieve this object, the present invention provides a plurality of leads 21 and 22 arranged in parallel using a conductor; And a coil 23 formed in the middle of the leads 21 and 22 by using a conductor.

In this case, the distance WL of the leads 21 and 22 is maintained at 3.80 ± 0.3 mm, the coil 23 maintains the winding diameter CD at 1.20 ± 0.02 mm, and the coil 23 is totally wound. Maintain 18 TT.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram showing a conventional filament with the main dimensions, Figure 2 is a block diagram showing a filament according to the present invention with the main dimensions.

Normally, halogen lamps can be made extremely small and lightweight, have good color rendering, and are closest to the three primary colors of light, and have excellent illuminance and lifespan. The beam's precise characteristics make it suitable for use in automotive lighting.

1 and 2, reference numeral CL denotes the length of the coils 13 and 23, LL1 denotes the length of the first leads 11 and 21, LL2 denotes the length of the second leads 12 and 22, and CD The winding diameter, WL, of the coils 13 and 23 represents the distance between the first leads 11, 21 and the second leads 12, 22. PL1 and PL2 refer to the distance WL is divided by two.

Lamps may be classified in an axial manner or a radial (axial angle) direction depending on the form of arranging the coils 23 of the filaments. The former is a form in which the winding center line of the coil 23 coincides with the irradiation direction of the lamp, and the latter is a form in which the center line of the coil is arranged orthogonal to the irradiation direction of the lamp. If the length of the lead, the coil winding diameter, and the number of turns of the coil are the same, the latter method can generate a higher luminous flux, so in the headlamp, the latter is used as a high beam and the former as a low beam.

The present invention relates to the lamp of the axial type described above, and the main specifications of the filament composed of the first lead 21, the second lead 22, and the coil 23 can be compared through FIGS. 1 and 2. . The length CL of the coil 23, the lengths LL1 (LL2) of the leads 21, 22, and the like are left unchanged, and the winding diameter CD of the coil 23, the leads 21, 22, and the like. The distance WL, and the total athlete TT of the coil 23 is changed. More specifically, the total number of players TT is increased while reducing the winding diameter CD of the coil 23.

Usually, as the total weight of the conductor including the leads 21 and 22 and the coil 23 is increased, and as the winding diameter CD of the coil 23 is decreased, the life of the filament is extended. However, since the increase in weight acts as a factor in reducing the life and increasing the current, it is necessary to find the optimum conditions through various experiments in the appropriate range.

Table 1 compares the results while changing the winding diameter (CD) and the total number of players (TT) of the coil 23. In the first case, as the result of increasing the total athlete (TT) from 15 to 18 with the winding mirror (CD) intact, the service life is satisfactory but the luminous flux is below the prescribed value. In the second case, the total diameter of the athlete (TT) is left unchanged, and the diameter of the winding (CD) is reduced from 1.3 to 1.2 mm, resulting in improved luminous flux but less than the service life. In the third case, the winding diameter (CD) was reduced to 1.2 mm and the total number of athletes (TT) was increased to 18 times. As a result, the luminous flux was lowered compared to the second case, but better than the first case, and the lifetime was the same as the first case. . Therefore, the third case can be seen as the most desirable optimal value.

TABLE 1

CD. T.T. Beam Life time Remarks H1 12V 55W 1.3 ± 0.02 18 1200 600 Luminous flux 1.2 ± 0.02 15 1900 200 Under life 1.2 ± 0.02 18 1515 ± 70 600 optimal

At this time, in the present invention, the distance WL of the leads 21 and 22 is reduced from 4.0 to 3.8 mm. As the winding diameter CD of the coil 23 is reduced to 1.2 mm, PL1 and PL2 of FIG. It is reduced to 1.3 mm.

In addition, the luminous efficiency expressed by the ratio (lm / W) of the luminous flux lm to the power consumption W of the light source is also an important design factor.

Table 2 shows the characteristic change according to the specification change from FIG. 1 to FIG. 2, although the luminous flux is slightly lowered, it can be expected to reduce the power and improve the luminous efficiency and life time. When the same voltage of 13.2V is applied, the current is reduced from 5.015A to 4.774A, reducing the power from 66.23W to 62.97W. The luminous flux is reduced by 12.6%, while the life time is increased by 140%.

TABLE 2

Voltage (V) Current (A) Power (W) Luminous flux (LM) Life time Species 13.2 5.015 ± 0.02 66.23 ± 2 1734 ± 80 250 The present invention 13.2 4.774 ± 0.05 62.97 ± 2 1515 ± 70 600

Figure 3 is a block diagram showing a finished product to which the filament according to the present invention is applied.

Numeral 24 denotes the use of quartz glass as an enclosure for high light output efficiency, even at a small size, and the filling halogen gas prevents the filament from evaporating. Reference numeral 25 denotes a terminal connected to one side of the leads 21 and 22 inside and exposed to the outside and connected to the power cable.

The filament axis is eccentric by an angle from a reference axis (RA) orthogonal to the reference plane (RP).

The lamp of the present invention is completed in the specification of 12V 55W, the temperature distribution is kept constant within the set life time, there is no blackening phenomenon, and it is resistant to thermal shock and does not rupture even when water gets on during light emission operation.

According to the above configuration and operation, the present invention has the effect that the halogen lamp of the automobile can satisfy the optimized conditions in terms of luminous flux and lifetime.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

Claims (4)

delete Leads 21 and 22 arranged in parallel using a conductor; And In the structure of the halogen lamp filament, characterized in that it comprises a coil 23 formed by using a conductor in the middle of the lead 21, 22, The distance WL of the leads 21 and 22 is formed to be maintained at 3.80 ± 0.3 mm, the coil 23 maintains the winding diameter CD at 1.20 ± 0.02 mm, and the coil 23 is The structure of a halogen lamp filament, characterized by being formed by holding 18 general TT. delete delete