JPH06119916A - Heater lamp device - Google Patents

Abstract

PURPOSE:To provide a heater lamp device which generates certain electric connections, which allows easy operation of installing a heater lamp in heat roller,,and does not use any adhesive to fix a holding member. CONSTITUTION:A heater lamp device includes a heater lamp 1 in which a filament is installed and has external leads 13, 14 led airtightly out of pinch seal parts 11, 12 at the ends, a feeder cable 2 covered with a covering pipe 3 and installed along the axis of the heater lamp 1, and the first and the second holding member 4, 5 installed at the ends of the heater lamp 1 to hold fast the pinch seal parts 11, 12 and the feeder cable 2. Part of a shortcircuiting member 6 is embedded fast in the first holding member 4, and one of the external leads 13 and one end 21 of the feeder cable 2 are connected with the exposed portion of the shortcircuiting member 6, while part of a plurality of current feeding members 7, 8 is embedded fast in the second holding member 5, and the other external lead 14 and the other end 22 of the feeder cable 2 are connected with the exposed portions of these current feeding members 7, 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater lamp device, and more particularly to a heater lamp device provided in a heat roller of a copying machine, a laser beam printer or the like.

[0002]

2. Description of the Related Art As a heat source arranged in a heat roller of a copying machine or a laser beam printer, a rod-shaped heater lamp is often used because of its rapid thermal start-up and high thermal efficiency. As this heater lamp, a lead wire type heater lamp having covered lead wires attached to both ends is mainly used because of reliable electrical connection.

In this lead wire type heater lamp, a lead wire is connected to an external lead which penetrates the pinch seal portions at both ends in an airtight manner, and a ceramic base is made of an inorganic material in order to protect the connection portion and ensure electrical insulation. It is fixed to the pinch seal part with an adhesive.

[0004]

This lead wire type heater lamp not only obstructs the lead wire when the heater lamp is installed in the heat roller, but also improves the installation of the lead wire after installation. There is a problem in that the wiring of is complicated. In addition, the inorganic adhesive used to fix the ceramic base has a problem that when it absorbs water vapor in the air, its insulation performance is rapidly lost, resulting in poor insulation. Heater lamp is required.

The present invention has been made to solve the above problems, and an object of the present invention is to ensure a reliable electrical connection and to dispose a heater lamp in a heat roller. Another object of the present invention is to provide a heater lamp device that does not become complicated and does not use an adhesive for fixing an insulating member.

[0006]

SUMMARY OF THE INVENTION A heater lamp device according to the present invention has at least one heater lamp having a filament inside and one and the other outer leads that are airtightly led out from pinch seal portions at both ends. A power supply line covered with a cladding tube and arranged along the axis of the heater lamp, and first and second power supply lines respectively arranged at both ends of the heater lamp for holding and fixing the pinch seal portion and the power supply line. Two
A short-circuit member is partially embedded and fixed in the first holding member, and the one external lead and one end of a power supply line are connected to an exposed portion of the short-circuit member. A plurality of power feeding members are partially embedded and fixed in the holding member of 2,
The other external lead and the other end of the power supply line are connected to the exposed portions of the power supply member, respectively. The first and second holding members are preferably made of heat resistant resin or ceramics.

[0007]

Since the power supply members of the heater lamp are gathered on one side, it is easy to dispose the lamp in the heat roller, and the heater lamp and the power supply line are held and fixed.
Since the second holding member is fixed to the heater lamp without using an adhesive, the insulating performance is not lost.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of a heater lamp device of the present invention,
1 is a heater lamp with an output of 400w, 2 is a wire diameter of 1.0 mm
Φ SUS 304 power supply line, 3 a quartz covering tube, 4 a first holding member made of heat-resistant PPS resin, and 5 a second holding member also made of PPS resin.

In the heater lamp 1, a filament (not shown) is arranged in an arc tube made of quartz glass, and pinch seal portions 11 and 12 are formed at both ends. The pinch seal portion 1
The outer leads 13 and 14 extend through the airtight holes 1 and 12 in an airtight manner. The outer leads 13 and 14 are 0.8 mmΦ molybdenum, and the filament is the pinch seal part 1.
They are electrically connected via molybdenum foils (not shown) embedded in the Nos. 1 and 12.

As shown in the front view of FIG. 3 and the right side view of FIG. 4, the first holding member 4 is made of a substantially cylindrical PPS resin, and the pinch seal portion 11 of the heater lamp 1 is inserted therein. A bottomed rectangular opening 41 and a bottomed circular opening 42 into which the cladding tube 3 is inserted are formed along the axis of the first holding member 4. When the pinch seal portion 11 and the covering tube 3 are inserted into the openings 41 and 42, the short-circuit member 6 is arranged at the portion where the external lead 13 and the one end portion 21 of the power supply line 2 extend. Part 6 is embedded and fixed in the holding member 4. And the external lead 13
Holes 43 and 44 that enable welding of the short-circuit member 6, the external lead 13 and the one end portion 21 of the power-supply line 2 are formed in a portion where the power-supply line 2 and the short-circuit member 6 overlap. , 44 are holes into which welding rods can be inserted.

The second holding member 5 is made of a rectangular PPS resin, and like the first holding member 4, the bottomed rectangular opening 51 and the bottomed circular opening 51 into which the pinch seal portion 12 and the covering tube 3 are inserted. 52 is formed, and the external lead 14 and the power supply line 2 are formed.
The other end portion 22 is placed in contact with the power feeding members 7 and 8 embedded and fixed in the second holding member, and is welded through a welding opening (not shown). The power feeding members 7 and 8 project from the second holding member 5 and are directly connected to faston terminals and lead wires.

Thus, the heater lamp device according to the present invention described above is inserted from the side of the first holding member 4 when it is inserted into the heat roller.
Since the power supply line 2 covered with is integrated by the first holding member 4, the insertion can be performed very easily. After the insertion into the heat roller, the wire connection for supplying power to the heater lamp can be made by connecting to the pair of power supply members 7 and 8 provided on the second holding member 5 on the terminal side.
It can be done very easily.

FIG. 2 is a sectional view for explaining another embodiment,
This is an example of using two heater lamps. That is, the heater lamps 1A and 1B are arranged in parallel, and the power supply line 2 is arranged so as to be covered with the cladding tube 3 in the middle. Then, the power supply line 2 covered with the heater lamps 1A and 1B and the covering tube 3
1 is integrated by the first holding member 4A and the second holding member 5A, as in the case of FIG.
3A, 13B and one end 21 of the power supply line are electrically connected by welding. In addition, the second holding member 5A has 3
The power feeding members 7A, 7B, and 8A are embedded, and the external leads 14A and 14B and the other end portion 2 of the power feeding line, respectively.
2 is electrically connected.

In the second embodiment, the heater lamps 1A and 1B are turned on by the changeover switch SW.
It is possible to light only one or both 1A and 1B. That is, this embodiment is used when the lighting condition is set depending on the size of the paper carrying the toner.

FIG. 5 shows the shape of the short-circuit member 6A when the heater lamps 1A and 1B and the power supply line 2 are preferably arranged in this two-lamp type embodiment.
It has a convex shape. 2 in the smallest space
The heater lamps 1A and 1B of the book and the power supply line 2 can be arranged.

In the above embodiments, the holding member 4,
5, 4A, 5A and the heater lamps 1, 1A, 1B and the power supply line 2 are connected by short-circuit members 6, 6A and power supply members 7, 8, 7A embedded in the holding members 4, 5, 4A, 5A.
Since it is performed by welding with 7B and 8A and no adhesive is used, it is possible to obtain excellent insulating properties.

Various modifications are possible in the present invention,
For example, the holding members 4, 5, 4A, and 5A are not limited to the heat-resistant resin, and ceramics may be used. Regarding the shape of these holding members, those having a predetermined shape may be used as appropriate.

[0018]

As described in detail above, in the heater lamp device of the present invention, the power feeding portions are gathered at one end side, and no adhesive is used to fix the holding member arranged at the end portion of the heater lamp. Therefore, it is extremely easy to dispose the lamp in the heat roller, and it is easy to connect the device to the equipment, and the insulation can be excellent.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a heater lamp device of the present invention.

FIG. 2 is a sectional view of another embodiment of the present invention.

FIG. 3 is a front view of a first holding member.

FIG. 4 is a right side view of the first holding member.

FIG. 5 is a sectional view of a first holding member according to a second embodiment.

[Explanation of symbols]

1, 1A, 1B ... Heater lamp 11, 12, 11A, 12A, 11B, 11B ... Pinch seal part 13, 14, 13A, 14A, 13B, 14B ... External lead 2 ... Feed line 3 ... Cover tube 4, 4A ... 1 holding member 5, 5A ... 2nd holding member 6 ... Short-circuit member 7, 8, 7A, 7B, 8A ... Power feeding member

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[Procedure amendment]

[Submission date] November 12, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of a heater lamp device of the present invention,
1 is a heater lamp with an output of 400 W, 2 is a wire diameter of 1.0 mm
Φ, a feeder line made of a metal having a small thermal expansion coefficient such as tungsten or molybdenum, 3 is a cladding tube made of quartz, 4 is a first holding member made of heat resistant PPS resin,
Reference numeral 5 is a second holding member also made of PPS resin.

Claims (3)

[Claims] 1. One or more heater lamps each having a filament disposed inside thereof and having one and the other outer leads airtightly led out from pinch seal portions at both ends, and a heater tube covered with a cladding tube. A feed line arranged along an axis, and first and second holding members arranged at both ends of the heater lamp for holding and fixing the pinch seal portion and the feed line, respectively. The short-circuit member is partially embedded and fixed to the first holding member,
The one external lead and one end of a power feed line are connected to the exposed portion of the short-circuit member, a plurality of power feed members are partially embedded and fixed in the second holding member, and the exposed portions of the power feed member are respectively fixed. A heater lamp device, wherein the other external lead and the other end of the power supply line are connected to each other. 2. The heater lamp device according to claim 1, wherein the first and second holding members are made of heat resistant resin. 3. The heater lamp device according to claim 1, wherein the first and second holding members are made of ceramics.