JPH0330999Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heater lamp for a kotatsu.

[Technical background]

In a heater lamp for a kotatsu, a filament is usually arranged inside a rod-shaped colored quartz glass enclosure so as to extend along its axis.
External leads directly or indirectly electrically connected to both ends of the filament are disposed so as to protrude outward from the end sealing portions at both ends of the sealing body. A base is attached for the purpose of protecting the end sealing part and making it easier to attach the heater lamp to the kotatsu.

[Prior art]

Conventionally, caps with various configurations have been known, but basically there is a cylindrical sealing part insertion part into which the end sealing part of the heater lamp body is inserted, and a cap with a cylindrical sealing part insertion part into which the end sealing part of the heater lamp body is inserted. It has a lead wire holding part that holds a covered lead wire connected to an external lead that protrudes outward from the sealing part and is connected to an external lead.

Therefore, in a heater lamp for a kotatsu, it is important that the cap is attached to the heater lamp body in a specific state so that a desired attachment state is achieved for the heater lamp. in particular,
The axial direction of the heater lamp body and the cylindrical axis direction of the sealing part insertion part of the base match with high precision, and even when the base is fixed to the kotatsu, no excessive force is applied to the heater lamp body. It is necessary that the cap and the heater lamp body be installed with a certain amount of play or degree of freedom with respect to each other so that the lamp body does not become stuck.

However, when using a conventional cap,
Since the mounting position of the cap relative to the heater lamp body is unstable and tends to bend, it is difficult to stably achieve a state in which the axial direction of the heater lamp body and the cylindrical axis direction of the cap correspond. It is difficult to weld the external lead of the heater lamp body and the lead wire in this condition, and even if welding could be performed in a suitable condition, this posture easily collapses, so the heater lamp body There is a problem in that an excessive force is applied to the external lead at the welding point between the external lead of the lamp body and the lead wire, and as a result, the end sealing portion of the heater lamp body is easily damaged at an early stage.

[Purpose of invention]

The present invention was developed based on the above-mentioned circumstances, and its purpose is to easily and reliably align the axial direction of the heater lamp body with the cylindrical axial direction of the sealing part insertion portion of the cap. Therefore, it is possible to weld the external lead of the heater lamp body and the coated lead wire in the desired state, and no excessive force is applied to the external lead at the welding point. Moreover, the cap can be attached to the heater lamp body while the heater lamp body has a certain degree of freedom relative to the cap, so that no unreasonable force is applied to the heater lamp body when it is attached. Another object of the present invention is to provide a heater lamp for a kotatsu that reliably prevents overheating and has a long service life.

[Structure of the idea]

The above object is provided with a heater lamp body for a kotatsu having a seal having end sealing portions formed at both ends, and a cap attached to the end sealing portion of the heater lamp body, the cap A flat cylindrical sealing part insertion part into which the end sealing part of the heater lamp body is inserted, and a sealing part presser provided on a pair of flat plate parts facing each other in this sealing part insertion part. The claws and the side plate parts of the sealing part insertion part each protrude and extend from the insertion front end along the cylindrical axis direction of the insertion part, and the separation width thereof matches the width of the end sealing part of the heater lamp main body. a pair of anti-bending edges that are in contact with the outer surfaces of both sides of the end sealing portion, respectively, and a mounting plate portion that protrudes and extends from the insertion rear end side of one of the flat plate portions; On both sides of the sealing part insertion part, a heat dissipation part is formed integrally with one of the flat plate parts having the mounting plate part, and a sealing part is provided from the end sealing part provided at the end of the mounting plate part. It has a U-shaped frame-shaped lead wire holding part that is formed at a position in the extension direction of the external lead protruding in the axial direction of the body and holds a covered lead wire that extends in the same direction and substantially coincides with the external lead. This is achieved by a heater lamp for a kotatsu which is characterized by the following.

The present invention will be described in detail below with reference to the drawings.

Figures 1A, 1B, and 1C show an example of a base made of a metal plate used in an embodiment of the present invention, and 1 is a flat cylindrical base into which the end sealing parts at both ends of the heater lamp body for a kotatsu are inserted. This sealing part insertion part 1 includes one metal member 11 including one flat plate part 2A and side plate parts 3A and 3B rising from both ends thereof, and the other flat plate part 2B. and the other metal member 12 are connected to each other by four locking claws 13. This sealing part insertion part 1
In this case, a pair of flat plate portions 2A, 2 facing each other
B has substantially U-shaped notches 4A and 4B, respectively.
are provided and bent toward the inside of the sealing portion insertion portion 1 to form sealing portion holding claws 5A and 5B.

Reference numerals 6A and 6B are projecting edges for preventing bending, and these projecting edges 6A and 6B are extended from the front end of the insertion section on both side plate sections 3A and 3B of the sealing section insertion section 1, respectively, to prevent the tube of the sealing section insertion section 1 from being bent. It protrudes and extends in the same direction as the axis P. These projecting edges 6A, 6B are bent by bent portions 61A, 61B at their proximal ends, and the side plate portion 3
They are arranged close to each other in a direction that is slightly smaller than the distance between A and 3B, and the width of the separation is made to match the width of the end sealing part 20 of the heater lamp body 10, which will be described later. .

7A and 7B are heat dissipation parts formed integrally with the other flat plate part 2B, and these heat dissipation parts 7A and 7B
is formed into a U-shaped frame by folding back portions of the other metal member 12 that extend from both sides of the flat plate portion 2B to surround the outer vicinity areas of the side plate portions 3A and 3B.

Reference numeral 8 denotes a mounting plate portion, and this mounting plate portion 8 extends and protrudes from the insertion rear end of the flat plate portion 2B and the rear ends of the heat radiating portions 7A and 7B in the other metal member 12. A lead wire holding part 9 is formed at the center of the rear end of the mounting plate part 8 at a position on the cylinder axis P of the sealing part insertion part 1. This lead wire holding part 9 has a pair of side parts 91 and 92 formed by, for example, providing a notch and bending the notch to make it stand up.
and a bottom part 93 between the side parts 91 and 92.
It is higher than the standing height of 2.

14, 14 are through holes for fixing, and the mounting plate part 8
It is formed by punching or the like.

15A and 15B are notches for lead wire welding, the notch 15A is formed by cutting out a semicircular portion at the rear end of one flat plate 2A, and the notch 15B is formed by cutting out a semicircular portion at the rear end of one flat plate 2A. A flat circular portion is punched out in a region extending to the rear end of 2B and the mounting plate portion 8 following this.

FIGS. 2A and 2B are explanatory diagrams showing a state in which the base having the above structure is attached to the heater lamp body 10 for a kotatsu. 20 is a flat end sealing portion of the heater lamp body 10 mainly made of quartz glass;
From the center of the end surface of this end sealing part 20,
1 protrudes and extends outward in the axial direction of the heater lamp body 10. The end sealing part 20 is inserted into the sealing part insertion part 1, and a pair of flat surfaces 22A, 22B of the end sealing part 20 are provided with sealing part presser claws 5, respectively.
A and 5B are pressed together. That is, the end sealing part 20
The flat plate parts 2A, 2B and the side plate parts 3A, 3B of the sealing part insertion part 1 are not in direct contact with each other, and are in the gap 2.
6.

The proximal outer surfaces of the side parts 23A and 23B of the end sealing part 20 are provided with protruding edges 6A and 6 for preventing bending, respectively.
B is brought into contact with the heater lamp body 1.
The external lead 21 extending in the axial direction of the cap is in a state of extending in the direction of the cylindrical axis P of the sealing portion insertion portion 1 of the cap. This external lead 21 is connected to a covered lead wire 2 for power supply that extends in the same direction in approximately the same direction as the external lead 21.
4 to electrically connect the two, and the covered lead wire 24 is housed within the frame of the lead wire holding part 9 while extending along the cylinder axis P, and is then welded to one side. The tip side of the portion 91 is the other side portion 9
By being bent toward the side shown in FIG. 2, it is held and fixed to the base.

Welding of the external lead 21 and the covered lead wire 24 is as follows:
A welding auxiliary coil 25 is wound in advance around the outer periphery of the core wire exposed at the end of the covered lead wire 24, and the part where this welding auxiliary coil 25 is provided is aligned with the outer periphery of the external lead 21 of the heater lamp body 10 in the same direction. After adjusting the position in the axial direction of the heater lamp body 10, while maintaining that position,
This is done by welding the opposing portions of the external lead 21 and the covered lead wire 24 using a welding machine via the notches 15A and 15B.

[Function and effect of the example]

According to the above embodiment, the following effects are achieved.

(1) The side plate parts 3A and 3B of the sealing part insertion part 1 have protruding edges 6A and 6 for preventing bending that protrude from the side plate parts 3A and 3B.
B, and these projecting edges 6A, 6B are brought into contact with the outer surfaces of the side parts 23A, 23B of the end sealing part 20 of the heater lamp main body 10 inserted into the sealing part insertion part 1, respectively. By setting the cap to the cylindrical axis P of the sealing part insertion part 1,
However, as shown in FIG. 1A, it is installed in a state in which it is aligned with the axial direction of the heater lamp body 10 with high accuracy without being bent, and it also protrudes from the end sealing part 20 of the heater lamp body 10 in the axial direction. Since the lead wire holding part 9 is located at the position in the extension direction of the external lead 21, the external lead 21 and the covered lead wire 24 connected thereto are
A state in which both are stably held in the cap and extend substantially in the same direction is reliably realized.

As a result, during welding, the coated lead wire 24 can be attached to the external lead 21 in a state in which the desired posture is maintained while the posture of the external lead 21 is maintained naturally without applying unreasonable force. In addition to being able to weld, since both the heater lamp body 10 and the covered lead wire 24 are stably fixed and held at the same time, the end sealing part 20 is not damaged prematurely, and can be used for a long time. You can get a heater lamp for a kotatsu that has a long lifespan.

Moreover, the heater lamp body 10 is held in the thickness direction of the sealing part by the sealing part presser claws 5A, 5B with respect to the base, and in the width direction of the sealing part (up and down in FIG. 2A) by the projecting edges 6A, 6B. Since the heater lamp body 10 is mounted with a gap formed in the direction (direction), the heater lamp body 10 has a certain degree of freedom with respect to the base. When the heater lamp body 10 is attached to the kotatsu with screws or the like through the holes 14, 14, no unreasonable force is applied to the heater lamp body 10.

(2) Heat dissipation parts 7A and 7B are formed on the outside of the side plate parts 3A and 3B of the sealing part insertion part 1, respectively, integrally with the other flat plate part 2B forming the cap. The heat dissipation area increases and heat dissipation is achieved with high efficiency, thereby making it possible to prevent the end sealing portion 20 from overheating. The other flat plate part 2B on which the heat dissipation parts 7A and 7B are formed has a mounting plate part 8 that comes into contact with the kotatsu when it is attached to the kotatsu, so it is certain that the mounting plate part 8 will not overheat. This ensures high safety.

[Effect of idea]

As explained in detail above, the present invention includes a heater lamp body for a kotatsu that has an enclosure with end sealing parts formed at both ends, and a base attached to the end sealing parts of the heater lamp body. The base includes a flat cylindrical sealing part insertion part into which the end sealing part of the heater lamp main body is inserted, and a pair of flat plate parts facing each other in the sealing part insertion part. The width of separation between the sealing part presser claws provided at the ends of the sealing part insertion part and the side plate parts of the sealing part insertion part that protrude and extend from the insertion front end along the cylindrical axis direction of the insertion part is the same as that of the end of the heater lamp main body. A pair of anti-bending edges that match the width of the sealing part and are in contact with the outer surfaces of both sides of the end sealing part, respectively, and a pair of protruding edges that extend and protrude from the insertion rear end of one of the flat plate parts. an extending mounting plate part, a heat radiating part integrally formed with one flat plate part having the mounting plate part on both sides of the sealing part insertion part, and a heat dissipating part provided at an end of the mounting plate part. A U-shaped frame-shaped lead wire that holds a covered lead wire that is formed in the extension direction of the external lead that protrudes from the end sealing part in the axial direction of the sealing body and extends in the same direction as the external lead. Since the heater lamp for a kotatsu is characterized by having a holding part, it is possible to easily maintain a state in which the axial direction of the heater lamp body and the cylindrical axial direction of the sealing part insertion part of the cap are aligned.
This can be achieved reliably and stably, making it possible to weld the lead wire to the external lead without applying excessive force, and also stably holding both the heater lamp body and the covered lead wire in the base. This prevents early damage to the end sealing part, and the base is attached to the heater lamp body with a certain degree of freedom, so when installed on a kotatsu. It is possible to obtain a heater lamp for a kotatsu with a long service life by ensuring that no unreasonable force is applied to the heater lamp body, and that overheating of the end sealing part and the mounting plate part is reliably prevented. can.

[Brief explanation of drawings]

Figures 1A, 2B, and 2C are respectively an explanatory front view, an explanatory side view, and an explanatory bottom view showing an example of a base according to an embodiment of the present invention, and Figures 2A and 2B are respectively the same as in Figure 1. FIG. 2 is an explanatory front view and an explanatory side view showing a state in which a base having the illustrated configuration is attached to a heater lamp body. 1... Sealing part insertion part, 2A, 2B... Flat plate part, 3A, 3B... Side plate part, 11, 12... Metal member, 13... Locking claw, 4A, 4B... Notch part,
5A, 5B... Sealing part presser claw, 6A, 6B... Projection, 61A, 61B... Bent part, 7A, 7B...
Heat radiation part, 8... Mounting plate part, 91, 92... Side part,
93...bottom, 9...lead wire holding part, 14...
Fixing through hole, 15A, 15B...notch, 10
... Heater lamp body, 20 ... End sealing part, 2
1... External lead, 22A, 22B... Flat surface, 26... Gap, 23A, 23B... Side part, 2
4... Covered lead wire, 25... Welding auxiliary coil.

Claims (1)

[Claims for Utility Model Registration] A heater lamp body for a kotatsu that has an enclosure with end sealing parts formed at both ends, and a cap attached to the end sealing parts of the heater lamp body. , the cap includes a flat cylindrical sealing part insertion part into which the end sealing part of the heater lamp main body is inserted, and a pair of flat plate parts facing each other in this sealing part insertion part. The spacing between the stopper presser pawl and the side plate parts of the sealing part insertion part, which protrude from the front end of the insertion part and extend along the cylindrical axis direction of the insertion part, is the same as that of the end sealing part of the heater lamp main body. A pair of anti-bending edges that match the width and are in contact with the outer surfaces of both sides of the end sealing part, respectively, and a mounting plate part that extends and projects from the insertion rear end of one of the flat plate parts. and a heat dissipation part formed integrally with one flat plate part having the mounting plate part on both sides of the sealing part insertion part, and the end sealing part provided at the end of the mounting plate part. a U-shaped frame-shaped lead wire holding portion that is formed at a position in the extension direction of the external lead that protrudes from the portion in the axial direction of the envelope and holds a covered lead wire that extends in the same direction and substantially coincides with the external lead; A heater lamp for a kotatsu, characterized by comprising: