JPH0592956U - Double tube heater lamp - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a double-tube heater lamp in which the outer bulb does not come off and the spring property of the holding spring for holding the outer bulb does not deteriorate for a long time. A double-tube heater lamp in which a straight-tube heater lamp is covered with an outer bulb, and the heater lamp and the outer bulb are held by holding springs arranged on both sides, A first wire rod formed of two wires and arranged so as to be spaced apart from each other to hold the heater lamp under pressure.
A holding portion and a second holding portion, a pair of stopper portions that come into contact with the end surface of the outer valve, a pair of first connecting portions that connect the first holding portion and the second holding portion, and the second holding portion. It is characterized in that it comprises a pair of second connecting portions connecting the stopper portions, and the first connecting portion and the second connecting portion are in contact with the inner wall of the outer valve and extend.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a double-tube heater lamp that is suitably used for spot-like heating indoors.

[0002]

[Prior Art]

 Electric heaters are often used for spot-like heating rather than heating the entire room. Conventionally, a resistance heating element such as a nichrome wire has been used as an electric heater for heating, but for example, a nichrome wire heater has a slow rise immediately after energization and takes about 1 minute to reach a steady temperature. The thermal efficiency is not so high. Therefore, recently, a heater lamp, which has a high thermal efficiency, has a fast rise time, and reaches a steady temperature within a few seconds after power is turned on, has been attracting attention.

As this heater lamp, a halogen incandescent light bulb in which a light emitting filament is arranged in a quartz glass envelope in which a small amount of halogen is enclosed together with an inert gas is often used, and compared with a halogen light bulb for illumination. It was designed with the color temperature lowered to around 2000-2600K, but it is still too dazzling to see directly. Moreover, if the envelope has cracks or distortion, it may explode during lighting. In order to solve these problems, the heater lamp is covered with an outer tube, and the outer tube is colored to prevent glare and to be a double-tube heater lamp with safety against rupture. Is being developed.

[0004]

[Problems to be solved by the device]

 The following are known as the above-mentioned double-tube heater lamp. That is, as shown in FIG. 3, an appropriate number of ring-shaped holding members 6 are attached to a heater lamp 1 to which a normal base 2 is attached, and an outer bulb 3 having an inner diameter that abuts on the holding members 6 is provided. A structure for inserting and holding is known. However, this conventional double-tube heater lamp has a structure in which the outer bulb is free to move and the outer bulb is easily separated from the holding spring. It needs to be installed at a position closer to the center. Therefore, the holding spring is placed at a high temperature, and there is a problem that the strength and the spring property are reduced at an early stage.

The present invention has been made to solve the above problems, and its purpose is to prevent the outer valve from coming off and to prevent the outer spring from holding. It is to provide a double-tube heater lamp whose spring property does not deteriorate over a long period of time.

[0006]

[Means for Solving the Problems]

 The double-tube heater lamp of the present invention is a double-tube heater lamp in which a straight-tube heater lamp is covered with an outer bulb, and the heater lamp and the outer bulb are held by holding springs arranged on both sides. In the heater lamp, the holding spring is formed of a single wire material, and is in contact with the end surface of the outer bulb and the first holding portion and the second holding portion that are arranged apart from each other and hold the heater lamp in a pinched state. A pair of stopper portions, a pair of first connecting portions connecting the first holding portion and the second holding portion, and a pair of second connecting portions connecting the second holding portion and the stopper portion, The first connecting portion and the second connecting portion are in contact with the inner wall of the outer valve and extend.

[0007]

[Action]

 Since a pair of holding springs are provided on both sides and the holding portion of the holding spring holds the low temperature portion of the heater lamp, the strength and holding force of the holding spring do not decrease. Further, since the pair of stopper members are in contact with the end surface of the outer valve, the outer valve will not come off.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an enlarged cross-sectional view showing one end of the present invention, in which 1 is a heater lamp, 2 is a ceramic base, 3 is an outer bulb, 4 is a holding member, and 5 is a cover. It is a lead wire.

The heater lamp 1 is a halogen incandescent lamp with an output of 1.5 KW and a straight tube type bulb 11 made of quartz glass having an outer diameter of 10 mmφ and a total length of 334 mm. A pinch seal portion 12 is formed at the end of the valve 11, and a molybdenum foil 15 is embedded in the pinch seal portion 12. An inner lead 14 is welded to one end of the molybdenum foil 15, and the inner lead 14 is connected to a filament 13 made of a tungsten coil. Two outer leads 16 are welded to the other end of the molybdenum foil 15, and the coated lead wire 5 is welded to the outer leads 16. The pinch seal portion 12 is inserted into the ceramic base 2 and fixed by an adhesive (not shown). The base 2 has a flat rectangular shape with an opening on the side where the pinch seal portion 12 is inserted and the side where the coated lead wire 5 is led out, and the coated lead wire 5 is perpendicular to the external lead 16. It is being licensed.

The outer bulb 3 is made of quartz glass and has an outer diameter of 19. It is a straight pipe having a diameter of 0 mm and a thickness of 1.2 mm. A holding spring 4 is used to hold the heater lamp 1 on the tube axis of the outer bulb 3. As shown in the vertical view of FIG. 2, the holding spring 4 is formed of a single stainless wire having a spring property and a wire diameter of 1.0 mmφ, and holds the bulb 11 of the heater lamp 1 with a pinching force. A first holding portion 41, a second holding portion 42, a pair of stopper portions 43 that come into contact with the end surface of the outer valve 3, and a pair of first connecting portions 44 that connect the first holding portion 41 and the second holding portion 42. And a pair of second connecting portions 45 connecting the second holding portion and the stopper portion 43, and the first connecting portion 44 and the second connecting portion 45 abut on the inner wall of the outer valve 3 and extend. With the structure, the heater lamp 1 is held on the tube shaft of the outer bulb 3.

The first holding portion 41 is configured to clamp and hold the bulb 11 of the heater lamp 1 over a half circumference or more, and the second holding portion 42 is a pair of members having a recess 42 a formed in the center thereof. 11 is configured to be held under pressure. Since the first holding portion 41 and the second holding portion 42 are formed so as to be separated by about 5.0 mm, not only the holding of the heater lamp becomes more reliable, but also these holding portions are relatively heated by the heater lamp. Since the valve 11 in the low temperature portion of No. 1 is held under pressure, the spring property is not impaired for a long time. The holding spring 4 can be easily attached by pushing the first connecting portion 44 into the valve 11 of the heater lamp 1. Further, the stopper portion can be easily formed by bending both end portions of the holding spring 4.

In the above-described embodiment, since the heater lamp 1 holds the bulbs 11 on both sides by the holding spring 4 having the first holding portion 41 and the second holding portion 42, the heater lamp 1 is securely connected to the outer bulb 3. Can be held on the axis of. Further, since the stopper portion 43 is arranged so as to contact both end surfaces of the outer valve 3, the movement of the outer valve 3 is restricted, and the outer valve 3 does not move easily. Therefore, the outer valve does not come off. ..

It should be noted that the present invention is not limited to the above embodiment, and for example, the bulb 11 of the heater lamp 1 may be colored instead of coloring the outer bulb 3. Further, when the glare is not a particular problem, the coloring may not be applied.

[0014]

[Effect of the device]

 As described in detail above, the double-tube heater lamp of the present invention can prevent the outer bulb from coming off and prevent the spring property of the holding spring from deteriorating for a long time. ..

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the present invention.

FIG. 2 is a vertical sectional view of the present invention.

FIG. 3 is a sectional view of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Heater lamp 11 ... Bulb 12 ... Pinch seal part 13 ... Filament 14 ... Internal lead 15 ... Molybdenum foil 16 ... External lead 2 ... Base 3 ... Outer bulb 4 ... Retaining spring 41 ... First holding part 42 ... Second holding part 43 ... Stopper part 44 ... First connection part 45 ... Second connection part 5 ... Coated lead wire

Claims (1)

[Scope of utility model registration request] 1. A double-tube heater lamp in which a straight-tube heater lamp is covered with an outer bulb, and the heater lamp and the outer bulb are held by holding springs arranged on both sides, wherein the holding spring Are formed of a single wire rod, are spaced apart from each other, and have a first holding portion and a second holding portion that sandwich and hold the heater lamp, a pair of stopper portions that contact the end surface of the outer bulb, and The first connection part and the second connection part are formed of a pair of first connection parts that connect the first holding part and the second holding part, and a pair of second connection parts that connect the second holding part and the stopper part. A double-tube heater lamp characterized in that a portion thereof extends in contact with the inner wall of the outer bulb.