JPH0721999A - Halogen bulb with outer bulb - Google Patents

Abstract

PURPOSE:To realize a long service life as well as to make it unnecessary to replace a bulb according to the season or the time zone, by attaching necessary light interference membranes to the glass bulbs of two inner bulbs provided in parallel inside an outer glass tube, respectively. CONSTITUTION:In an outer bulb glass tube 30 a base 160 is fixed to one end, two inner bulbs 10 and 11 are provided in parallel making the tube axis of the bulb 30 as the center. A light interference membrane 100 to lower the color temperature is attached on the surface of the glass bulb 15 of the bulb 10, while an interference membrane 101 to increase the color temperature is attached on the surface of the glass bulb 16 of the bulb 11. By converting the chromaticity by converting a power source in such a constitution, it is made unnecessary to replace the bulb according to the season such as summer or winter, and to the time zone, and a halogen bulb with outer bulb which does not hinder the brightness, and realizes a long life can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a halogen bulb with an outer bulb in which a plurality of halogen bulbs containing a halogen gas together with an inert gas in a glass bulb are housed in an outer bulb glass tube having a base at one end. .

[0002]

2. Description of the Related Art Halogen bulbs are widely used as bulbs for general lighting because they have higher color rendering properties and longer life than incandescent bulbs. A fog light, which is a headlight of an automobile, is a halogen bulb that can convert a wide range of color temperature by providing an optical interference film on the outer surface of the glass bulb.
4000-600 that illuminates a halogen bulb with a color temperature near 00K and jewels and crystal products to create a high-class feeling
There are halogen bulbs with a color temperature near 0K.

FIG. 3 is a schematic cross-sectional view showing a conventional single-ended halogen lamp. The single-ended halogen halogen bulb 50 shown in FIG. 3 includes a filament 51, struts 52 and 53 for supporting the filament, a glass bulb 54 in which the filament and the struts are provided, and an exhaust pipe portion 55 in which the tip of the glass bulb 54 is sealed. Molybdenum foils 56 and 57 are sealed to the one end sealing portion. A ceramic cylindrical body 58 is provided in the sealing portion.
And a base 59. In addition, external lead wires 60 and 61 are led out from the molybdenum foil of the sealing portion. Cylindrical body 58
Power supply lines 62 and 63 for supplying electric power to the filament 51 are internally provided inside. Feeders 62, 63
Are connected to molybdenum foils 56 and 57 via external lead wires 60 and 61, respectively. The power supply line 62 also serves as a fuse for interrupting the arc discharge generated inside the glass bulb 54 when the filament is interrupted for lighting. An optical interference film 64 for converting the color temperature of the light emitted from the filament 51 is provided on the outer surface of the glass bulb 54.

[0004]

By the way, when a halogen light bulb provided with an optical interference film for converting a color temperature is used for general lighting in an outdoor park, a sidewalk, etc., a color temperature near 2500K which is warm in winter is used. A light source capable of illuminating with a pale yellow light is desired, and a light source capable of illuminating with a pale blue light having a color temperature of 4000 K or more, which has a cool breeze in summer, is desired. In such cases,
In the conventional halogen bulb, it is necessary to replace the light source with a color temperature required in winter and summer alternately, and there is a problem that the replacement work is complicated. Most halogen bulbs used for general lighting have a rated life of 2000 hours.
There is a problem in that the brightness of the halogen bulb has to be reduced for a longer life. Further, when a high-intensity discharge lamp such as a high-pressure sodium lamp or a mercury lamp is used as a light source having the above-mentioned color temperature, there is a problem that it cannot be manufactured at a lower cost than a halogen bulb.

The present invention has been made in view of the above,
Light bulbs can be manufactured at low cost because there is no need to replace bulbs during the seasons such as winter and summer, or during the time of day, and the life is more than twice as long without changing the brightness. The purpose is to provide a halogen bulb.

[0006]

In order to achieve the above object, a halogen bulb with an outer bulb according to the present invention accommodates a single-ended or double-ended internal bulb and an internal bulb in which a light-emitting body is installed. In a halogen light bulb having an outer bulb glass tube with a base fixed to the inner bulb, two inner bulbs are arranged side by side with respect to the tube axis of the outer bulb glass tube, and one inner bulb is internally provided on the glass bulb surface. A light interference film for lowering the color temperature of the light-emitting body, and a light interference film for increasing the color temperature of the light-emitting body provided on the other inner bulb. To do. In addition, the base portion is characterized in that it has three or four power supply terminals, and a guide portion made of ceramic that determines a fitting direction with the socket is provided at a central portion of the base.

[0007]

[Function] According to the above configuration, the winter season, the summer season, or 1
It is possible to easily change the color temperature of the light source according to the time of day or the like by only switching the power source. Further, the life can be extended to twice as long without changing the conventional brightness. Further, by making the structure of the base part substantially the same as that of the G17 type base, the power supply terminal can be fitted into the socket without error, and the halogen bulb can be replaced safely and easily.

[0008]

Embodiments of the present invention will be described below with reference to FIG. FIG. 1 is a schematic front view of a halogen bulb with an outer bulb that is an embodiment of the present invention. The halogen bulb with outer bulb 1 shown in FIG. 1 is a single-ended internal bulb (halogen bulb) 1.
It has an outer bulb glass tube 30 for accommodating the inner bulbs 10, 11. The internal valves 10 and 11 are respectively a filament 12 and a pillar 13 that supports the filament.
Glass bulbs 15 and 16 in which filament 14, filaments 12 and struts 13 and 14 are provided, and molybdenum foils 17 and 18 sealed to one end of the glass bulbs 15 and 16 are sealed. Both ends of the filament 12 are connected to the molybdenum foils 17 and 18 of the internal valves via the columns 13 and 14, respectively. Quartz glass, Vycor glass, alumina silicate glass, or the like is used for the glass bulbs 15 and 16. In addition, the inner bulbs 10 and 11 each have an outer lead 2 for supplying electric power to the filament 12.
0 and 21 are pulled out. And the internal valve 1
The outer surfaces of the glass bulbs 15 and 16 of Nos. 0 and 11 are coated with light interference films for color temperature conversion, respectively.
The outer surface of the glass bulb 15 is provided with a light interference film 100 that transmits light yellow light that lowers the color temperature, and the outer surface of the glass bulb 16 of the inner bulb 11 transmits light blue light that increases the color temperature. The optical interference film 101 is applied.

The outer bulb glass tube 30 has a thickness of 0.7 to 2.0.
mm soft or hard glass is used, and a stem 31 is sealed at one end of the outer bulb glass tube 30. The stem 31 is provided inside the outer bulb glass tube, and three supporting leads 32, 33 and 34 are sealed. The external leads 21 of the internal valves 10 and 11 are connected to the supporting leads 32 via the power supply line 35, and the external leads 20 of the internal valves 10 and 11 are supporting leads 33 and 3.
4 is connected to each of the four power supply lines 36.
The supporting lead 32 is arranged on the tube axis of the outer bulb glass tube 30 and is connected to a ring 37 formed so as to be inscribed on the inner surface of the tip of the outer bulb glass tube. Further, the supporting lead 32 is a valve supporting ring 3 for supporting the outer circumferences of the glass tubes 15 and 16 of the internal bulbs 10 and 11, respectively.
8 is connected so that the internal valve does not fall off due to vibration, impact or the like.

A base 160 is fitted so as to cover the stem sealing portion at one end of the outer bulb glass tube 30. As shown in FIG. 2, the base 160 has a power supply terminal 1 on the outer periphery of its bottom.
It has three or more of 61, 162, 163. Further, the protrusion 165 at the center of the bottom is fitted with ceramic or metal and has a protrusion 167 for positioning the power supply terminal when the socket is fitted. The internal valve may have a similar structure with a double-ended die as well as a single-ended die, and the same action and effect are obtained.

[0011]

As described above, according to the present invention,
A light interference film that converts the color temperature of the light emitter to a low or high value is attached to the surface of the glass tube of the inner bulb that has the light emitter inside. Since it is installed inside the outer bulb glass tube, the color temperature of the light source can be easily switched according to the seasons such as winter and summer, and it is inexpensive and the life can be doubled. . Further, there is an advantage that the bulb replacement can be performed safely and easily by using the base for a halogen bulb having a projection with which the socket is fitted and positioned.

[Brief description of drawings]

FIG. 1 is a schematic front view of a halogen bulb with an outer bulb that is an embodiment of the present invention.

FIG. 2 is a schematic front view and a bottom view of the base portion of the halogen bulb.

FIG. 3 is a schematic sectional view showing a conventional halogen bulb.

[Explanation of symbols]

 1 Halogen bulb with outer bulb 10 Single-ended internal bulb 11 Single-ended internal bulb 12 Filamet (light emitter) 13,14 Strut 15 Internal bulb 10 glass bulb 16 Internal bulb 11 glass bulb 17,18 Molybdenum foil 20 , 21 External lead 30 Outer bulb glass tube 31 Stem 32, 33, 34 Supporting lead 35, 36 Power supply line 37 Internal valve supporting lead and ring 38 Internal valve supporting ring 100 Light interference film that transmits light yellow light 101 Light interference film that transmits light blue light 160 Base part 161, 162, 163 Power supply terminal 165 Projection part 167 Projection for positioning when socket is fitted

Claims (2)

[Claims] 1. A halogen bulb having a single-ended or double-ended internal bulb having a light-emitter therein, and an outer bulb glass tube accommodating the internal bulb and having a base fixed at one end, wherein the internal bulb is An optical interference film for lowering the color temperature of the light-emitter provided inside is attached to the glass bulb surface of one of the inner bulbs, which is arranged side by side around the tube axis of the outer bulb glass tube. A halogen bulb with an outer bulb in which a light interference film that raises the color temperature of the light-emitter installed inside is attached to the surface of the glass bulb of the inner bulb. 2. The base according to claim 1, wherein the base has three or four power supply terminals, and a guide part made of ceramic for determining a fitting direction with a socket is provided at a central part of the base. Halogen bulb with bulb