JP7320179B2 - lamp - Google Patents

Description

The present invention relates to lamps.

This application is an invention completed in the course of the applicant's development and production of a halogen lamp for heating. Therefore, in the specification and drawings of the present application, a halogen lamp for heating provided with a novel connection structure between a lamp lead wire and an external wire will be described as an example. However, the application of this novel lamp lead wire and external wire connection configuration is not limited to halogen lamps. This novel connection arrangement is applicable to all lamps that use a cylindrical arctube and have lamp leads extending outwardly from at least one arctube end. However, due to circumstances in the process of completing the invention, this specification and drawings will be described by taking a halogen lamp for heating as an example.

In general, the temperature of a lamp rises to a high temperature when it is lit. In particular, a heating lamp or the like for heat-treating an object to be irradiated becomes extremely hot when it is lit. Halogen lamps are one example of heating lamps. A halogen lamp has a structure in which a filament is arranged inside a cylindrical glass tube. Halides (compounds such as iodine and bromine) and inert gases (nitrogen, argon, etc.) are sealed inside the glass tube.

Japanese Patent Application Laid-Open No. 2013-196928 "Filament Lamp and Heating Device" (Published date: 2013.9.30) Applicant: Harrison Toshiba Lighting Co., Ltd. In Patent Document 1, the base 6 has an introduction hole 65 and a welding hole 66 ( Paragraph 0018) and the welding of the metal wire 71 and the outer lead wire 5 are performed using the welding hole 66 (paragraph 0019). The presence of weld holes 66 in the base 6 suggests that the welding operation will be performed after mounting the base 6 on the lamp. This has a configuration similar to the second conventional example described in this specification. JP 2018-174033 "Heater" (Publication date: 2018.11.8) Applicant: Toshiba Lighting & Technology Corporation 48 (Paragraph 0037). The body hole 44 holds the outer leads 34, 34 and the wirings 50, 50 by holding means to facilitate the welding process (paragraph 0039). The side holes 46, 46 desirably have an inner diameter that allows the welding means to be inserted (paragraph 0040). These descriptions suggest that the welding operation is performed after the bases 40, 40 are mounted on the lamp. This has a configuration similar to the second conventional example described in this specification.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a lamp having a novel lamp lead wire and external wire connection configuration.

In view of the above objects of the invention, a lamp according to the present invention has, on one aspect thereof, a lamp having a cylindrical arc tube and a lamp lead wire extending outward from at least one end of the arc tube, An external electric wire connected to a portion where the lamp lead wire extends to the outside, and a base member covering an end portion of the arc tube and a connection portion of the external electric wire, the base member covering the arc tube on one side. has an opening into which the end of the wire is inserted and a recess following this, and another surface perpendicular to the opening forming surface has an opening for passing the external electric wire covered with a heat-shrinkable tube. .

Furthermore, in the above lamp, the base member may be made of a material that has insulating properties, heat resistance to withstand heat generated by the lamp during lighting, and rigidity that protects against mechanical damage from the outside. good.

Furthermore, in the above lamp, the base member may be made of ceramics.

Furthermore, in the above lamp, the ends of the arc tube may be hermetically sealed.

Further, in the above lamp, the recess is composed of a relatively large recess into which the end of the arc tube is inserted and a relatively small recess that follows and accommodates a connection point between the lamp lead wire and the external electric wire. may consist of

Furthermore, in the above lamp, the portion where the lamp lead wire extends to the outside and the external electric wire may be welded.

Further, in the above lamp, the lamp may be a double base lamp.

Further, in the above lamp, the lamp may be a halogen lamp.

Further, according to one aspect of the method for manufacturing a lamp according to the present invention, (A) a lamp is prepared in which a lamp lead wire extends outward from at least one end of an arc tube, and (B) the lamp lead wire is A base member is prepared in which an external electric wire is connected to a portion extending to the outside, and (C) a recess into which at least one end of the lamp can be inserted and an opening through which the external electric wire can be inserted are formed. (D) from one end of the external electric wire, a cylindrical heat-shrinkable tube is passed through the external electric wire to attach the base member to at least one end of the lamp; It includes an external electric wire attaching step of inserting into the opening of the base member, and (E) heating the heat-shrinkable tube to shrink and harden it.

Further, in the lamp manufacturing method, the step (B) of connecting the external electric wire may be a step of welding the external electric wire to the portion where the lamp lead wire extends to the outside.

According to the present invention, it is possible to provide a lamp having a novel connection structure between a lamp lead wire and an external electric wire.

FIG. 1A is an overall view of a halogen lamp according to the first conventional example. FIG. 1B is a diagram illustrating the base member portion of the halogen lamp shown in FIG. 1A. FIG. 2A is an overall lamp view of a halogen lamp according to a second conventional example. FIG. 2B is a diagram illustrating the base member portion of the halogen lamp shown in FIG. 2A. FIG. 3A is an overall view of the halogen lamp according to this embodiment. FIG. 3B is a diagram illustrating the base member portion of the halogen lamp shown in FIG. 3A. FIG. 4 is a flow chart for comparing the process of attaching the external wires of the halogen lamp according to the first conventional example, the second conventional example, and the present embodiment. FIG. 5A is a schematic diagram explaining main steps of a method for attaching an external electric wire in the first conventional example; FIG. 5B is a similar schematic diagram in the second conventional example. FIG. 5C is a similar schematic diagram in this embodiment. FIG. 5D is an enlarged cross-sectional view of an external wire attachment portion in this embodiment.

An embodiment of a lamp according to the present invention will be described in detail by taking a heating halogen lamp as an example and referring to the accompanying drawings. Here, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[Halogen lamp]
In order to facilitate understanding of this embodiment, a description will be given while comparing conventional halogen lamps (first conventional example and second conventional example) and a halogen lamp according to this embodiment (this example).

FIG. 1A (A) is a front view of a halogen lamp 10 of a first conventional example , and (B) is a right side view. For convenience of explanation, the right end of the lamp in (A) is a view of the completed state, and the left end is a view during assembly when the external electric wire 16a is welded to the lamp lead wire 9a. After completion, the left end of the lamp is also symmetrical, but has the same configuration as the right end. The same is true for FIG. 2A(A) and FIG. 3A below. FIG. 1B(A) is a plan view of the base member 14-1b attached to the right end of the halogen lamp, (B) is a front view, and (C) is a right side view.

The base members at both ends of the lamp are the same. In the following drawings, when the same elements (members) are bilaterally symmetrical, the elements on the right side are denoted by the reference numeral "b", and the elements on the left side are denoted by the reference numeral "a". distinguish between However, items common to left and right elements (members) will be comprehensively described using reference numerals without "a" and "b". Further, each member of the lamp 10 will be collectively described in this embodiment.

FIG. 2A (A) is a front view of the halogen lamp of the second embodiment, and (B) is a right side view. FIG. 2B(A) is a front view of the base member attached to the right end of the halogen lamp, (B) is a left side view, and (C) is a bottom view. The base members at both ends of the lamp are the same. Each member of the lamp 20 will be collectively described in this embodiment.

(this example)
FIG. 3A is a diagram illustrating the halogen lamp 30 according to this embodiment. (A) is a front view, and (B) is a right side view. FIG. 3B (A) is a left side view of the base member 14-3b attached to the right end of the halogen lamp, (B) is a front view, (C) is a right side view, and (D) is a bottom view. is. Note that in the bottom view of (D), the dashed lines indicating the boundary of the space are drawn thick so that the internal space can be easily understood.

Comparing the halogen lamps 10, 20, and 30, all three lamps have the same configuration with respect to the arc tube 2 and its internal structure, the external electric wire 16a, and the connection point between the lamp lead wire 9 of the arc tube and the external electric wire 16. FIG. In the halogen lamps 10, 20, 30, the connection process of the lamp lead wire 9 and the external wire 16 is different, and the base members 14-1, 14-2, 14 that protect the connection points are suitable for the difference in the connection process. -3 have different structures.

Regarding the same components in the halogen lamps 10, 20 and 30, the halogen lamp 30 will be described as an example. A halogen lamp 30 is composed of a cylindrical arc tube 2 made of glass in which a filament 3 is enclosed. Both ends of the filament 3 are connected to filament lead wires 6, metal foils (eg, molybdenum foil) 8, and lamp lead wires (eg, molybdenum leads) 9, respectively. A sealing portion 12 enclosing the metal foil 8 of the arc tube 2 is formed into a flat plate shape by heating and pressing the glass tube, and is in an airtightly sealed state. Such a lamp is called a double capped lamp. The protrusion 4 of the arc tube 2 is a trace of an exhaust pipe that was pinched off after the airtightly sealed arc tube 2 was deaerated and filled with a halide and an inert gas.

The base members 14-1, 14-2, 14-3 are members that protect the connection points between the lamp lead wires 9 and the external wires 16. As shown in FIG. The base member covers the lamp lead wire 9 and the external wire 16 while it is energized and has insulating properties to ensure safety. Any material may be used as long as the material has a rigidity that allows For example, it is preferably made of ceramics.

The connection between the lamp lead wire 9 of the arc tube and the external wire 16 is performed by welding, for example. For this welding, for example, the lamp lead wire 9 is placed in a crossed state with respect to a terminal attached to the tip of the internal core wire of the external electric wire 16 by caulking and connected by resistance welding. However, it is not limited to this welding method. Any desired connection method may be used as long as the external electric wire 16 and the lamp lead wire 9 can be electrically connected.

[External wire attachment process for halogen lamp]
Next, the process of connecting the lamp lead wire 9 and the external wire 16, which is the difference between the halogen lamps 10, 20, and 30, and the base members 14-1, 14-2, and 14-3 that are compatible with the differences in each connection process. The structure will be explained.

FIG. 4 is a flowchart for comparing the method of attaching the external electric wire of the halogen lamp according to the first conventional example, the second conventional example, and the present embodiment. FIG. 5A is a schematic diagram illustrating the main steps of a method for attaching an external electric wire in the first conventional example, FIG. 5B is a similar schematic diagram in the second conventional example, and FIG. 5C is a similar schematic diagram in the present embodiment. 1 is a schematic diagram of FIG. FIG. 5D is an enlarged cross-sectional view of an external wire attachment portion in this embodiment.

(First conventional example)
In the lamp 10 of the first conventional example, in step SA1, a lamp (before connecting the external wire and before attaching the base member) is prepared.
At step SA2, the external electric wire 16 is welded to the lamp lead wire 9, as shown in FIG. 5A.
At step SA3, an adhesive is applied around the sealing portion 12 and the welding portion 11 of the lamp. The adhesive is preferably, for example, a ceramic-based adhesive having good heat resistance, but is not limited to this.
At step SA4, the base member 14-1 is attached to the end of the arc tube 2, as shown in FIG. 5A. Using the two grooves 24 formed in the base member 14, the base member is mounted so as to sandwich the seal portion 12 formed in a flat plate shape of the lamp 2. - 特許庁When the welded portion 11 between the lamp lead and the external wire abuts against the base member 14-1, the seal portion 12 reaches approximately half the depth of the notch 24, and the rest is open.

At step SA5, the adhesive is temporarily dried.
At step SA6, the adhesive is filled from the opening of the cut 24 of the base member. This adhesive may be the same as the adhesive used in step SA3.
At step SA7, the filled adhesive is dried. This drying process is performed using, for example, a heating furnace.
At step SA8, a finishing process is performed. The finishing treatment is a surface treatment such as scraping away excess adhesive protruding from the filling portion using a cutter, a file, or the like.

(Second conventional example)
In the lamp of the second conventional example, the lamp 2 is prepared at step SB1.
At step SB2, as shown in FIG. 5B, the sealing portion 12 of the arc tube is inserted into the opening 34 of the base member 14-2 to mount.
At step SB3, the external electric wire 16 is welded to the lamp lead wire 9. As shown in FIG. As shown in FIG. 5B, the external wire 16 is inserted through the opening 38 on the side surface of the base member 14-2, positioned with respect to the lamp lead wire 9, and the welder is inserted through the upper and lower openings 36 of the base member 14-2. is inserted and welded.
At Step SB4, finish processing such as confirmation of the strength of the welded portion and confirmation of the installation state of the base member is performed.

(this example)
In the lamp of this embodiment, the lamp 2 is prepared in step SC1.
At step SC2, the external electric wire 16 is welded to the lamp lead wire 9 in the same manner as at step SA2.
At step SC3, the base member 14-3 is attached to the seal portion 12 at the end of the lamp. As shown in FIG. 5C, the tip of the external wire 16 is inserted through the opening 42 of the base member 14-3 and pulled out from the opening 46, the base member 14-3 is pulled up to the welded portion 11 of the external wire 16, and the lamp end is is attached to the seal portion 12 of the

At step SC4, the heat-shrinkable tube 18 is attached. As shown in FIG. 5C, the tip of the external wire 16 is inserted into the heat-shrinkable tube 18, passed through the opening 46 of the base member 14-3, and pulled up to the vicinity of the welded portion 11 of the external wire 16. As shown in FIG. The heat-shrinkable tube 18 is used to fix the base member 14-3 to the seal portion 12 of the lamp end portion and the external electric wire 16 to prevent displacement and movement, and is made of silicon, for example.
At step SC5, the heat-shrinkable tube 18 is heated to shrink and harden.
At step SC6, finishing processing similar to that at step SB4 is performed.

[Structure of Base Member Adapting to Differences in Each Connection Process ]
As described above, the connecting process is different between the first conventional example, the second conventional example, and the present embodiment. For this reason, the structures of the base members 14-1, 14-2, 14-3 adapted to the differences in each connection process are also different.

As shown in FIGS. 1B and 5A, the base member 14-1 of the first conventional example is generally cylindrical with both ends open, and is formed with a groove 24 for sandwiching the flat seal portion 12 therebetween. The grooves 24 are formed at two locations 180 degrees apart in the circumferential direction of the cylinder, and the depth of the grooves is about two-thirds of the depth of the cylinder.

As shown in FIGS. 2B and 5B, the base member 14-2 of the second conventional example has a box shape with one side open as a whole, and is slightly rectangular as shown in the front view (FIG. 2B(A)). It's becoming The open-sided opening 34 has a recess leading therethrough into which the seal 12 of the lamp is inserted. A circular recess shown in the left side view (FIG. 2B(B)) is a recess with which the lamp lead wire 9 abuts. The opening 38 shown in the bottom view (FIG. 2B(C)) is an opening into which the external electric wire 16 is inserted (see FIG. 5(B)). Apertures 36 shown in the front view (FIG. 2B(A)) are also formed at the same position on the opposite surface, and are apertures for inserting a welding machine from the upper and lower apertures to perform welding connection. Aperture 34 and the recesses following it, apertures 38 and 36, are all in spatial communication.

On the other hand, the base member 14-3 of this embodiment is generally box-shaped with one side open, as shown in FIGS. 3B, 5C and 5D. The open side is formed with an opening 42 into which the lamp seal 12 is inserted, and as shown in the front view (FIG. 3B(B)), the interior of this recess has a height in which the lamp seal 12 is inserted in the vestibular portion. A recess 43 with a relatively high height is provided at the rear of the recess 43, and a recess 44 with a relatively low height for accommodating the connecting portion 11 of the lamp lead wire 9 and the external wire 16 is provided at the back of the recess. Furthermore, the opening 46 shown in the bottom view (FIG. 3B(D)) of the base member 14-3 is an opening through which the external electric wire 16 and the heat-shrinkable tube 18 are inserted (see FIG. 5(D)).

Important matters regarding the shape of the base member 14-3 are the opening 42, the recesses 43 and 44, and the opening 46 that define the internal space, and the outer shape is arbitrary. In fact, as shown in FIGS. 3A, 3B(C), and 5C, the outer shape of the base member 14-3 is partially a deformed hexagon when viewed in cross section.

FIG. 5D is a partial enlarged view of the right end of the completed lamp shown in FIG. 3A. A gap is provided between the members in order to make it easier to understand how the arc tube 2 and the external wire 16 are fitted to the base member 14-3, but it should be noted that they are actually in close contact with each other.

The base member 14-3 has a relatively large recess 43 following the opening 42, a relatively small recess 44 continuing therefrom, and an aperture 46 formed in a plane perpendicular to the plane where the opening 42 is formed. The seal portion 12 of the arc tube is inserted into the relatively large recess 43 . The connection portion 11 is accommodated in the relatively small recess 43 . The external wire 16 wrapped with the heat-shrinkable tube 18 is inserted into the opening 46 . However, it is not limited to this. The recesses 43 and 44 may be of the same size, or conversely, the recesses 44 may be of a larger size than the recesses 43 . All of the recesses 43 and 44 following the opening 42 and the opening 46 are in spatial communication.
Table 1 summarizes the structural features of the base members 14-1, 14-2 and 14-3.

[Advantages and effects of the present embodiment compared with the first and second conventional examples]
(1) The first conventional example and the present embodiment are common in that the welding process is performed before mounting the base member (steps SA2, SC2). Welding performed without a base member increases work efficiency in that there is no member to interfere. The difference is that in the first conventional example, the adhesive application and drying steps are required twice (steps SA3, SA5, SA6 and SA7). On the other hand, in the present embodiment, the insertion of the heat-shrinkable tube and the heat-shrinking process only need to be performed once (steps SC4, CS5). The process is simplified and workability is good.

(2) The second conventional example has a welding process after mounting the base member (steps SB2 and SB3). Therefore, it is necessary to provide the base member with two upper and lower openings 36 for inserting the welding machine. Welding work performed through the opening 36 is inefficient. On the other hand, in the present embodiment, the welding process is performed before mounting the base member, so that there is no obstructing member, so the working efficiency is good and the occurrence of defective welding can be suppressed.

In the mass production process of lamps, it is important to reduce the number of work processes and improve the work efficiency of each process.

[Scope of application of the present invention, etc.]
As described above, the present embodiment has been described by taking the double-ended halogen lamp for heating as an example, but the present invention is not limited to this. The invention is applicable to all lamps that use a cylindrical arctube with lamp leads extending outward from at least one end. The technical scope of the present invention is defined by the description of the appended claims.

24: groove 36, 38: aperture 2: arc tube 3: filament 4: protrusion 8: metal foil 9: lamp lead wire 10, 20, 30: halogen lamp, lamp 11: connection part , 12: seal portion, 14-1, 14-2, 14-3: base member, 16: external electric wire, 18: heat-shrinkable tube, 34, 43: concave portion, 36, 37, 38, 46: opening,

Claims (8)

a cylindrical arc tube;
and lamp leads extending outwardly from at least one end of the arc tube,
an external wire connected to a portion where the lamp lead wire extends to the outside;
a base member that covers the end of the arc tube and the connection point of the external electric wire,
The base member has a first opening into which the end of the arc tube is inserted and a recess continuing therefrom, the recess being a first recess into which the end of the arc tube is inserted; followed by a relatively small second recess for accommodating the connection point of the lamp lead wire and the external wire,
Furthermore, the base member has a second opening for passing the external electric wire in another surface perpendicular to the surface on which the first opening is formed,
The lamp, wherein the external electric wire covered with a heat-shrinkable tube extends outside from a second opening of the base member attached to the end of the arc tube. A lamp according to claim 1, wherein
The lamp, wherein the base member is made of a material having insulating properties, heat resistance to withstand heat generated by the lamp during lighting, and rigidity to protect against external mechanical damage. 3. The lamp of claim 2, wherein
The lamp, wherein the base member is made of ceramics. In the lamp according to any one of claims 1 to 3,
The lamp, wherein the ends of the arc tube are hermetically sealed. In the lamp according to any one of claims 1 to 4 ,
The lamp, wherein the portion where the lamp lead wire extends to the outside and the external electric wire are connected by welding. In the lamp according to any one of claims 1 to 5 ,
A lamp, wherein the lamp is a double-ended lamp. In the lamp according to any one of claims 1 to 6 ,
A lamp, wherein the lamp is a halogen lamp. The lamp according to any one of claims 1 to 7 , further comprising:
A lamp comprising a heat-shrinkable tube that covers the external electric wire for a predetermined length from the vicinity of a connection portion of the external electric wire to the lamp lead wire.

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