JP2836714B2 - Heater lamp device - Google Patents

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 copier, a laser beam printer, or the like.

[0002]

2. Description of the Related Art As a heat source disposed in a heat roller of a copying machine or a laser beam printer, a rod-shaped heater lamp is often used because of rapid thermal rise and high thermal efficiency. As the heater lamp, a lead-type heater lamp having coated lead wires at both ends is mainly used because the electrical connection is secure.

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

[0004]

The lead wire type heater lamp not only obstructs the lead wire when the heater lamp is disposed in the heat roller, but also leads to the equipment of the lead wire after being disposed. Is complicated. The inorganic adhesive used to fix the ceramic base has a problem that its insulation performance is rapidly lost when it absorbs water vapor in the air, resulting in poor insulation and other problems. Is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to make sure that the electric connection is secure and to dispose the heater lamp in the heat roller. An object of the present invention is to provide a heater lamp device which 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 comprises at least one heater lamp having a filament disposed therein and one and the other external leads hermetically drawn out from pinch seal portions at both ends. And the heater run
A feeder line arranged along the axis of the pump and covered with a cladding tube,
Pinch seal part of the heater lamp and end of the cladding tube
And first and second holding members for holding and fixing the
The first holding member has one pinch seal
Part and an opening into which one end of the cladding tube is inserted.
The first holding member is embedded and fixed in the holding member.
A fixed short-circuit member, and a short-circuit member within the first holding member.
Entanglement member and external lead derived from the pinch seal
One end of the power feed line led out of the cladding tube is welded together
And the second holding member has the other pinch seal portion.
An opening into which the other end of the cladding tube is inserted;
Each of the holding members is independently embedded in the holding member.
A plurality of power supply members installed and fixed, and
Derived from each power supply member and pinch seal part inside the holding member
Feed line derived from the external lead or cladding tube
Characterized in that either one end is welded to
You. The first and second holding members are preferably made of heat-resistant resin or ceramic.

[0007]

[Function] Pinch seals at both ends of heater lamp and power supply line
The two ends of the cladding tube covering the first holding member and the second holding member
The first holding member is inserted into the opening of the member.
A short-circuit member embedded and fixed in the holding member of
Of the short-circuit member and the pinch seal
One of the external leads and the feeder line derived from the cladding tube
The ends are welded together and inside the second holding member
Are individually embedded and fixed in this holding member.
Power supply members, and each power supply unit inside the second holding member.
Material, external lead and covering from the pinch seal
One end of the feeder line led out of the pipe is welded separately
Therefore, the first holding member and the second holding member
The end of the cladding tube covering the pinch seal part of the lamp and the power supply line
Is fixed without using an adhesive. Therefore, excellent insulation
It will be. Also, the power supply member may be a holding member on one side
The lamps inside the heat roller
Is extremely easy, and connection to equipment is also easy.
You.

[0008]

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

In the heater lamp 1, a filament (not shown) is provided in a quartz glass arc tube, and pinch seal portions 11 and 12 are formed at both ends.
External leads 13 and 14 extend airtightly through 1 and 12. The external leads 13 and 14 are made of molybdenum having a diameter of 0.8 mm.
They are electrically connected via molybdenum foils (not shown) embedded in 1 and 12.

[0010] The first holding member 4, as shown in a front view and a right side view of FIG. 4 in FIG. 3, made of substantially cylindrical PPS resin, one of the pinch seal portion 1 of the heater lamp 1
1 is inserted into one of the bottomed rectangular opening 41 and the cladding tube 3 .
A bottomed circular opening 42 into which the end is inserted is formed along the axis of the first holding member 4. When one of the pinch seal portions 11 and one end of the cladding tube 3 are inserted into these openings 41 and 42, the short-circuit member 6 is provided at a portion where the external lead 13 and one end 21 of the power supply line 2 extend. The short-circuit member 6 is embedded inside the first holding member 4.
And is fixed. And the external lead 13 and the power supply line
2 is short-circuited inside the first holding member 4.
It overlaps with the member 6, and the overlapping portion is
The part lead 13 and one end 21 of the power supply line 2 are welded.
Holes 43 and 44 for inserting a welding rod for
I have. Then, by using the holes 43 and 44, the short-circuit member
6 and one end 21 of the external lead 13 and the feeder line 2
Welded.

[0011] The second holding member 5 made of rectangular PPS resin, bottomed rectangular opening the other end of the first holding member 4 similarly to the other pinch seal portions 12 and the cladding tube 3 is inserted The external lead 14 and the other end 22 of the power supply line 2 are independently embedded and fixed inside the second holding member. And 8 are separately contacted and welded through a welding opening (not shown). Incidentally, the feeding members 7 and 8
A part protrudes from the second holding member 5 and is directly connected to a Faston terminal or a lead wire.

The heater lamp device according to the present invention is inserted from the first holding member 4 side when it is inserted into the heat roller.
The cladding tube 3 that covers the first holding member 4 and the second holding member
5 , the insertion can be performed very easily. After being inserted into the heat roller, the connection for supplying power to the heater lamp can be performed by connecting to a pair of independent power supply members 7 and 8 provided on the second holding member 5 on the end side. It can be done easily.

FIG. 2 is an explanatory sectional view of another embodiment.
This is an example where two heater lamps are used. That is, the heater lamps 1 </ b> A and 1 </ b> B are disposed in parallel, and the power supply line 2 is disposed in the middle covered by the coating tube 3. Then, the pinch seal portions of these heater lamps 1A and 1B and the power supply line 2 are connected.
An end of the covering tube 3 is integrated by a first holding member 4A and a second holding member 5A as in the case of FIG. 1, and a short-circuit member is provided inside the first holding member 4A. 6A is buried
And is fixed inside the first holding member.
The external leads 13A and 13B and the one end 21 of the power supply line are both electrically connected to the entanglement member 6A by welding. Also , inside the second holding member 5A , three
The power supply members 7A, 7B, 8A are embedded and fixed,
Inside the second holding member, each of the power supply members 7A, 7B, 8
The external leads 14A and 14B and the other end 22 of the power supply line are separately electrically connected to A by welding .

In the above embodiment, the heater lamp
Cover pinch seals at both ends of 1, 1A, 1B and power supply line
Both ends of the cladding tube 3 are connected to the first holding members 4, 4A and the second holding member.
Are inserted into the openings of the holding members 5, 5A.
Short-circuit member embedded and fixed inside 5, 4A, 5A
6, 6A and power supply members 7, 8, 7A, 7B, 8A,
External leads 13, 14, 13A, 13B, 14A, 14
B and the ends 21 and 22 of the power supply line are electrically connected by welding.
Since they are connected, the holding members 4, 5, 4A, 5A
The pinch seal of the heater lamp and the cladding
It is fixed without using an adhesive at the end. Therefore, insulation
It will be excellent in property.

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

In the above embodiment, the holding member 4,
5, 4A, 5A, 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.
It is performed by welding with 7B and 8A and does not use an adhesive, so that it is possible to make the insulation excellent.

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. Further, the shape of these holding members may be appropriately determined.

[0018]

As described in detail above, the present invention has the following advantages.
The heater lamp unit has pinch seals at both ends of the heater lamp.
Both ends of the cladding tube covering the portion and the power supply line are connected to the first holding member.
The first holding member is inserted into the opening of the second holding member.
In the part, a short-circuit member embedded and fixed in this holding member
A short-circuit member and a pinch sheet inside the first holding member.
External lead and cladding tube
A second holding member having one end of the power supply line welded together;
Embedded inside the holding members and fixed independently
Having a plurality of power supply members, and inside the second holding member
Each power supply member and the external leads led out from the pinch seal
And the one end of the power feed line led out of the cladding tube are welded separately
The first holding member and the second holding member
Covers the pinch seal of the heater lamp and the power supply line
Secured to the end of the tube without using glue. Therefore,
It has excellent edge properties. In addition, the power supply member is
It can be collected on the holding member and run into the heat roller.
It is extremely easy to install
It will be easier.

[Brief description of the drawings]

FIG. 1 is a 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 of the second embodiment.

[Explanation of symbols]

1, 1A, 1B ... heater lamps 11, 12, 11A, 12A, 11B, 11B ... pinch seal portions 13, 14, 13A, 14A, 13B, 14B ... external leads 2 ... power supply lines 3 ... coating tubes 4, 4A ... 1 holding member 5, 5A: second holding member 6: short circuit member 7, 8, 7A, 7B, 8A: power supply member

Claims (3)

(57) [Claims] At least one heater lamp having one and other external leads air-tightly drawn from pinch seals at both ends, and one or more heater lamps arranged inside the filament and arranged along the axis of the heater lamp. Covered with cladding tube
Power supply line, the pinch seal portion of the heater lamp and the end of the cladding tube
And first and second holding members for holding and fixing the
To become, cladding tube and the the first holding member one of the pinch seal portion
Having an opening through which one end of the first holding member is inserted,
Inside the member, there is a short
A short-circuit member inside the first holding member.
And the outer lead and cladding tube derived from the pinch seal
And one end of a power supply line led out of the second holding member is welded together, and the second holding member has an opening into which the other pinch seal portion and the other end of the cladding tube are inserted, and Inside the holding member, there are provided a plurality of power supply members independently embedded in and fixed to the holding member, and each of the power supply members and the pinch seal portion are drawn out inside the second holding member. A heater lamp device, wherein one end of a power supply line led from an external lead or a cladding tube is welded. 2. The heater lamp device according to claim 1, wherein said first and second holding members are made of heat-resistant resin. 3. The heater lamp device according to claim 1, wherein said first and second holding members are made of ceramics.