JP2009146731A - Single base halogen bulb - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a single base halogen bulb with a filament which is used in horizontal attitude and whose deformation is prevented to minimize an arc discharging time during the breakage of the filament. <P>SOLUTION: The single base halogen bulb 1 includes the filament 10 supported by both a first conduction supporting rod 11 having one end connected to an electrode 4b and the other end locked to an exhaust chip 3b at the front end of a glass tube 3 and connected to the front end of the filament 10 and a second conduction supporting rod 12 having one end connected to an electrode 4a and the other end connected to the base end of the filament 10. The halogen bulb 1 also has a first hanging rod 15 having both ends supported by both a first glass rod 13 fixed to the first conduction supporting rod 11 and a second glass rod 14, for hanging the filament 10 via a first hook 15a provided on the first glass rod 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a single-ended halogen lamp and, more particularly, to a single-ended halogen lamp that is used in a posture in which a filament extends substantially horizontally.

In a single-end type halogen light bulb, a filament is generally arranged in a glass tube extending from the base along the longitudinal direction of the glass tube. Since this filament has current-carrying portions at both ends, two conductive wires extend from the electrode provided on the base into the glass tube, and these conductive wires are connected to the power supply terminal of the filament. (See Patent Document 1)
By the way, it is necessary that the filament does not deform due to its own weight or due to slip of the crystal grain interface caused by repeated expansion and contraction of the filament during irregular lighting. Such deformation is likely to occur when the filament is used in a horizontal position or when the weight of the filament is heavy.

  Some conventional single-end type halogen light bulbs have a filament suspended by a hook to support the filament. However, this hook is provided on a rod extending like a cantilever from one glass rod and cannot sufficiently support a heavy filament. Further, the rod provided with the hook extends along a direction in which the filament extends, at a free peripheral position not particularly determined around the filament, for example, laterally or below the filament.

In such a conventional single-end type halogen light bulb, the filament is deformed by the weight of the filament and the load by which the hook pulls the filament, and as a result, the adjacent coil of the filament is short-circuited through the hook, resulting in arc discharge. Filament breakage may occur. Further, when the deformation of the filament progresses, the filament comes into contact with the glass tube, and further, there is a problem that the glass tube is softened and a hole is opened, and gas in the bulb is released.
JP 11-329371 A

  The present invention has been made in view of the background as described above, and an object of the present invention is to suppress the filament deformation of a single-end type halogen light bulb in which the filament is used in a horizontal posture and to shorten the arc discharge time when the filament is disconnected as much as possible. And

  In order to solve the above-mentioned problems, the present invention is a single-ended halogen lamp that has a filament of double winding or more in a glass tube and is used in a posture in which the filament extends substantially horizontally. A first electrode connected to the electrode and fixed to the sealing portion on the proximal end side of the glass tube, the other end being locked to the exhaust tip on the distal end side of the glass tube, and connected to the distal end side of the filament A conductive support rod, a second conductive support rod having one end connected to the second electrode and the other end connected to the proximal side of the filament, and the filament of the first conductive support rod more than the filament. A first glass rod fixed to one end side portion and the second conductive support rod; and a second glass rod fixed to the other end portion of the first conductive support rod from the filament. And both ends of the first A first hanging rod fixed to the glass rod and the second glass rod and disposed above the filament; and a first hook provided on the first hanging rod and hanging the filament. It is characterized by having.

  In such a single-ended halogen lamp, one end of the first conductive support rod is supported by the sealing portion on the base end side of the glass tube, and the other end is supported by the exhaust chip. That is, the first conductive support rod is supported at both ends and is stably supported. The filament is supported at the tip by the first conductive support bar and at the base by the second conductive support bar. In addition, the first glass rod is fixed to the first conductive support rod and the second conductive support rod, and the second glass rod is fixed to the tip side of the filament of the first conductive support rod. Since these first and second glass rods are fixed to the first conductive support rod stably supported, they are stable members in the glass tube. Since the first suspension rod is supported at both ends by the stable first and second glass rods, the rod is also stable, and the first hook provided on the first suspension rod Because the filament is suspended from above, the filament is firmly supported even when the filament is used in a horizontal position. Therefore, even when the filament is disconnected, the disconnection is completed with a small amount of deformation, and contact between the high-heat filament and the glass tube is also suppressed.

  In the single-ended halogen lamp described above, the first conductive support rod is bent to the side of the filament on the proximal end side and the distal end side of the filament, and extends in the direction in which the filament extends on the side of the filament. It is desirable to have an extended form.

  In such a single-ended halogen bulb, the first conductive support rod escapes the filament to the side, so that the filament may be broken and deformed, or a part of the filament may be broken and dropped. However, it does not contact the first conductive support rod. Therefore, arc discharge at the time of disconnection is also completed in a short time.

  In the single-ended halogen bulb described above, at least one second suspension extending between the first suspension rod and the filament from at least one of the first glass rod or the second glass rod. It is desirable to further comprise a rod and a second hook provided on the second suspension rod for suspending the filament.

  Thus, the filament can be supported more stably by suspending the filament with the second hook through the second suspension rod.

In the above single-ended halogen bulb, when the diameter of the first conductive support rod is D1 (mm) and the mass of the filament is G1 (g), the following formula (1)
D1> (√G1) × 0.014 (1)
It is desirable to satisfy.

  Thus, since the diameter of the first conductive support rod has a certain size or more in relation to the mass of the filament, the rigidity of the first conductive support rod is ensured, and the first suspension support rod is secured. The bar can be supported firmly, and the filament can be supported stably.

Moreover, in the above-described single-end type halogen light bulb, the second suspension rod is provided on both the first glass rod and the second glass rod, one for each of the two suspension rods. When the diameter of the first suspension rod is D2 (mm) and the partial mass of the filament between the two second hooks is G2 (g) (2)
D2> (√G2) × 0.027 (2)
It is desirable to satisfy.

  Thus, since the diameter of the first suspension rod has a certain size or more in relation to the partial mass of the filament, the rigidity of the first suspension rod is ensured, and the filament is more twisted. It can be supported stably.

  According to the present invention, in a single-ended halogen lamp used with a filament in a horizontal posture, the filament is firmly supported from above, deformation due to the weight of the filament is suppressed, arc discharge time is reduced, and the envelope It is also possible to prevent contact with the glass tube and melting of the glass tube.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate.

  In the drawings to be referred to, FIG. 1 is a perspective view of a single-ended halogen lamp according to an embodiment of the present invention, and FIG. 2 is a side view of the single-ended halogen lamp according to an embodiment of the present invention. FIG. 3 is a plan view of a single-ended halogen lamp according to an embodiment of the present invention.

  As shown in FIGS. 1 to 3, a single-ended halogen lamp 1 according to an embodiment of the present invention is configured by connecting a glass tube 3 to a base 2 and enclosing a filament 10 in the glass tube 3. Yes. The single-ended metal halide bulb 1 is used in a posture in which the filament 10 extends horizontally as shown in FIG.

  The glass tube 3 is flatly sealed on the base end side connected to the base 2 with the electrodes 4a and 4b made of molybdenum foil interposed therebetween, and is closed in a substantially spherical shape on the opposite end side and protrudes to the end. The exhaust tip 3b is formed. The electrodes 4a and 4b in the glass tube 3 are electrically connected to electrode pins 5a and 5b outside the base 2 respectively.

  The filament 10 is supported and supplied with electric power by a first conductive support bar 11 and a second conductive support bar 12 made of tungsten. The distal end 11b (corresponding to the other end) of the first conductive support rod 11 is locked and supported by the exhaust tip 3b, and the base end 11a (corresponding to one end) is attached to the sealing portion 3a of the glass tube 3. It is fixed. The base end 11a is connected to an electrode 4b as a first electrode.

  Similarly, the base end 12 a (corresponding to one end) of the second conductive support rod 12 is also fixed to the sealing portion 3 a of the glass tube 3. And the base end 12a is connected to the electrode 4a as a 2nd electrode.

  The filament 10 is a double-wound tungsten coil-like component and has power supply terminals at both ends. That is, the filament 10 has a relatively large mass. The filament 10 is connected to the first conductive support rod 11 on the distal end side, and connected to the distal end (corresponding to the other end) of the second conductive support rod 12 on the proximal end side, whereby electric power is supplied. . The proximal end side of the filament 10 of the first conductive support bar 11 and the second conductive support bar 12 are fixed to a first glass rod 13 extending vertically. Further, a second glass rod 14 extending vertically is fixed to the tip side of the filament 10 of the first conductive support rod 11. The first conductive support rod 11 is bent between the first glass rod 13 on the proximal end side and the second glass rod 14 on the distal end side so as to escape to the side of the filament 10 and Avoid interference. More specifically, the first conductive support bar 11 is bent sideways on the proximal end side of the filament 10 (see reference numeral 11d in FIG. 1), and also bent to the same side on the distal end side of the filament 10. (See reference numeral 11e in FIG. 1). And at each front-end | tip of the part bent to this side, it is extended in the direction (the direction where the glass tube 3 is extended) of the filament 10 (refer the code | symbol 11c of FIG. 1).

  The single-end type halogen light bulb 1 of the present embodiment has a first suspension made of tungsten having both ends fixed to a first glass rod 13 and a second glass rod 14 in order to support the filament 10 more firmly. A rod 15 is provided above the filament 10, specifically, directly above, and a first hook 15 a that suspends and supports the center of the filament 10 from above is provided at the center of the first suspension rod 15. .

  Further, a first auxiliary hanging rod 16 as an example of a second hanging rod is provided between the first hanging rod 15 and the filament 10. One end of the first auxiliary hanging rod 16 is fixed below the fixing portion of the first hanging rod 15 in the first glass rod 13. As a result, the first auxiliary suspension bar 16 is supported in a cantilevered manner by the first glass bar 13 and extends in the distal direction of the filament 10. A first auxiliary hook 16a as an example of a second hook is provided at the tip of the first auxiliary hanging rod 16, and the first auxiliary hook 16a has a filament length of 1 from the base end side. It is suspended from above at a position of about / 4.

  Further, a second auxiliary suspension rod 17 as an example of a second suspension rod is provided between the first suspension rod 15 and the filament 10. One end of the second auxiliary hanging rod 17 is fixed below the fixing portion of the first hanging rod 15 in the second glass rod 14. As a result, the second auxiliary suspension rod 17 is supported in a cantilevered manner by the second glass rod 14 and extends in the proximal direction of the filament 10. A second auxiliary hook 17a as an example of a second hook is provided at the tip (end on the base 2 side) of the second auxiliary hanging rod 17, and the second auxiliary hook 17a attaches the filament 10 to the tip. It is hung from the top at a position about 1/4 of the filament length from the side.

  The first auxiliary hanging rod 16 and the second auxiliary hanging rod 17 are both made of tungsten.

It is desirable that the first conductive support rod 11 and the first suspension rod 15 have a certain degree of rigidity in order to firmly support the filament 10. That is,
When the diameter of the first conductive support rod 11 is D1 (mm) and the mass of the filament 10 is G1 (g), the following formula (1)
D1> (√G1) × 0.014 (1)
It is desirable to satisfy. By satisfying this condition, the first conductive support rod 11 has sufficient rigidity, and deformation due to its own weight of the filament 10 can be suppressed.

The diameter of the first suspension rod 15 is D2 (mm), and the partial mass of the filament 10 between the first auxiliary hook 16a and the second auxiliary hook 17a, which are two second hooks, is G2 ( g), the following formula (2)
D2> (√G2) × 0.027 (2)
It is desirable to satisfy. By satisfying this condition, the first suspension rod 15 has sufficient rigidity, and deformation due to its own weight of the filament 10 can be further suppressed.

  The operational effects of the single-ended halogen lamp 1 configured as described above will be described.

  The single-ended halogen lamp 1 is used in a posture in which the filament 10 is in a horizontal direction as shown in FIG. 1, and power is supplied through the first conductive support rod 11 and the second conductive support rod 12. . In the one-end mold type halogen light bulb 1, the filament 10 is supported by the first hook 15a suspended from above, and the first hook 15a is composed of the first glass rod 13 and the second glass. It is supported by a first suspension rod 15 supported at both ends by a rod 14. Furthermore, the first glass rod 13 and the second glass rod 14 are both supported by the first conductive support rod 11, and the first conductive support rod 11 has a base end 11a at the sealing portion 3a and the electrode 4b. The tip 11b is supported by the exhaust tip 3b. That is, since the first hook 15a is supported by the members supported at both ends, the support is firm, and even the filament 10 which is a double or more coil and is relatively heavy is securely suspended. I can support it. Therefore, the filament 10 is not easily deformed by its own weight or a load pulled by the hook.

  Further, in the single-ended halogen lamp 1, the filament 10 has a first auxiliary hook 16a and a second auxiliary at a position of about 1/4 of the base end side and a position of about 1/4 of the front end side, respectively. It is suspended and supported by the hook 17a. Therefore, even if the filament 10 is long, it is firmly supported, and deformation due to its own weight is further suppressed.

  In addition, by using the first conductive support rod 11 and the first hook 15a having a sufficient thickness that satisfy the expressions (1) and (2), the filament 10 is fully supported.

  Further, since the first conductive support bar 11 escapes the filament 10 to the side and avoids interference with the filament 10, even when the filament 10 is about to break due to its life, Thus, the arc discharge generation time is shortened, and melting of the glass tube 3 and the like and gas escape from the glass tube 3 due to generation of high heat can be prevented.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, It can deform | transform and implement suitably. For example, the filament 10 is not limited to double winding but may be triple winding or more. In the above-described embodiment, the auxiliary suspension rods are provided in a row (two on the proximal end side and the distal end side) below the first suspension rod 15. Another auxiliary suspension rod is provided under the two auxiliary suspension rods 17, and the filament 10 is suspended by a hook on the further proximal end side of the first auxiliary hook 16a and the further distal end side of the second auxiliary hook 17a. You may comprise so that it may lower.

1 is a perspective view of a single-ended halogen lamp according to an embodiment of the present invention. It is a side view of the one-piece type halogen light bulb concerning one embodiment of the present invention. It is a top view of the single-head type | mold halogen light bulb which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Single-piece type halogen light bulb 2 Base 3 Glass tube 3a Sealing part 3b Exhaust tip 4a, 4b Electrode 10 Filament 11 1st electroconductive support rod 12 2nd electroconductive support rod 13 1st glass rod 14 2nd glass rod DESCRIPTION OF SYMBOLS 15 1st suspension rod 15a 1st hook 16 1st auxiliary | assistant suspension rod 16a 1st auxiliary | assistant hook 17 2nd auxiliary | assistant suspension rod 17a 2nd auxiliary hook

Claims (5)

A single-end type halogen light bulb having a filament of double winding or more in a glass tube and used in a posture in which the filament extends substantially horizontally,
One end is connected to the first electrode and fixed to the sealing portion on the proximal end side of the glass tube, and the other end is locked to the exhaust tip on the distal end side of the glass tube, A connected first conductive support bar;
A second conductive support rod having one end connected to the second electrode and the other end connected to the proximal side of the filament;
A first glass rod fixed to the end portion of the first conductive support bar from the filament and the second conductive support bar;
A second glass rod fixed to the other end side of the filament of the first conductive support rod;
A first suspension rod having both ends fixed to the first glass rod and the second glass rod, respectively, and disposed above the filament;
A single-ended halogen lamp having a first hook provided on the first hanging rod and hanging the filament.   The first conductive support rod is bent to the side of the filament on the proximal end side and the distal end side of the filament, and extends in a direction in which the filament extends on the side of the filament. The one-end mold type halogen light bulb according to 1. At least one second suspension rod extending between at least one of the first glass rod or the second glass rod between the first suspension rod and the filament;
The single-ended halogen lamp according to claim 1 or 2, further comprising a second hook that is provided on the second hanging rod and suspends the filament. When the diameter of the first conductive support rod is D1 (mm) and the mass of the filament is G1 (g), the following formula (1)
D1> (√G1) × 0.014 (1)
The single-ended metal halide light bulb according to any one of claims 1 to 3, wherein: The second suspension rod is provided on both the first glass rod and the second glass rod, and each of the two suspension rods is provided with one second hook,
When the diameter of the first suspension rod is D2 (mm) and the partial mass of the filament between the two second hooks is G2 (g), the following formula (2)
D2> (√G2) × 0.027 (2)
The single-ended halogen lamp according to claim 3, wherein:

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