JP2014120375A - Tungsten halogen lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tungsten halogen lamp that makes it difficult for an initial failure problem, in which the lighting of the bulb fails in a short time, to occur.SOLUTION: A tungsten halogen lamp comprises: a pair or rod-like conductive supports whose lower end parts are embedded in the basal part 11a of a translucent bulb 11; an electrode terminal 13a electrically connected to the lower end part of each support body 12a; a filament 14 stretched between the pair of support bodies; a vibration restriction device 15a supported and fixed by each of the support bodies 12a, extending to both sides of the support body 12a along the circumferential direction of the bulb 11, and configured to restrict vibration of the support body 12 by contact with the inner peripheral surface of the bulb 11; and a pair of projections 16a and 16b projecting inwards, which are formed on the bulb 11 outside both ends of the vibration restriction device 15a, and at positions with spaces left from the corresponding end parts. In the tungsten halogen lamp, the maximum vibration width of the vibration restriction device 15 is limited by the pair of projections 16a and 16b.

Description

  The present invention relates to a halogen light bulb that can be used particularly advantageously for lighting equipment in a stage or a broadcasting station studio.

  Various lighting fixtures are provided on the stage where theater and concerts are held, or in studios of broadcasting stations. For these lighting fixtures, for example, halogen bulbs are used.

  The halogen bulb is a light-transmitting bulb hermetically sealed at the base, a pair of rod-shaped conductive supports disposed inside the bulb with the bottom end embedded in the base, and each of the rod-shaped conductive supports. It consists of an electrode terminal electrically connected to the lower end and exposed to the outside of the bulb, and a filament stretched between the pair of rod-like conductive supports. Inside the translucent bulb, a halogen compound gas is enclosed to prevent blackening of the bulb and filament when the bulb is lit for a long time.

  On the other hand, Patent Document 1 discloses a fish collection lamp for a ship used in a ship such as a fishing boat. A marine fish collecting lamp has a configuration in which a light emitting tube and a mount portion to which the light emitting tube is fixed are accommodated in a bulb (envelope). The arc tube has a pair of electrodes, and the mount portion has an introduction line connected to each electrode of the arc tube.

  According to this document, the above-mentioned fish collecting lamp has a mount portion that is bulb-mounted due to a relatively large vibration generated by a wave hitting the hull when the fishing boat moves or a vibration of a generator housed in the fishing boat. In order to solve this problem, the holding part that holds the mounting part that fixes the valve is attached to the valve (envelope). ), The valve and the mount unit vibrate together to suppress displacement of the mount unit with respect to the valve, so that the mount unit is less likely to come off the valve and vibration resistance is improved. It is described.

Utility Model Registration No. 3080909

  Halogen bulbs are strictly packaged and shipped after strict quality inspection. However, when the bulb is lit at the customer's site, the filament breaks in a short time and can be used (lit) after that. If it disappears, the problem of the initial failure may be caused. When examining the halogen bulb that caused such a problem in detail, the rod-shaped conductive support supporting the filament vibrates violently due to a large impact applied when the halogen bulb is transported, especially when transported by ship or aircraft. It has been found that a crack occurs at the base of the translucent bulb in which the lower end of the rod-like conductive support is embedded, and thus the hermetic sealing of the translucent bulb is broken. When the hermetic sealing of the translucent bulb is broken, air (oxygen) enters the translucent bulb, and the filament oxidizes and breaks in a short time after the halogen bulb is turned on.

  Therefore, similarly to the case of the marine fish collecting lamp described in Patent Document 1, a holding portion (protrusion) protruding inward is formed on the light-transmitting bulb of the halogen bulb, and the holding portion is arranged inside the bulb. By holding a part (eg, a rod-like conductive support that supports the filament), the vibration resistance of the halogen bulb is improved.

  However, if a structure that holds the components arranged inside the light-transmitting bulb (protrusions) formed on the light-transmitting bulb of the halogen bulb is adopted, the components (examples) are placed inside the light-transmitting bulb during the assembly. In addition, a complicated operation of holding the component on the holding portion while inserting the rod-like conductive support member supporting the filament is required. In addition, if the part is held by the holding part (projection) formed on the bulb, the part held by the holding part repeatedly expands (thermally expands) and contracts when the light bulb is repeatedly turned on and off. A force is repeatedly applied to the translucent bulb. Accordingly, if the inner surface of the light-transmitting bulb is slightly scratched, the bulb tends to be damaged starting from the scratch, and the durability of the halogen bulb tends to be lowered.

  An object of the present invention is to provide a halogen which is less likely to cause an initial failure when the light bulb cannot be used (lighted) in a short time while achieving durability and simple assembly as good as a conventional halogen light bulb. To provide a light bulb.

  As a result of the researches conducted by the inventors of the present application, the impact applied to the halogen bulb when transporting the halogen bulb, in particular, by ship or aircraft, is a large one that hardly occurs in the normal use state of the halogen bulb. Therefore, when such a large impact is applied to the halogen bulb, the above problem can be solved by limiting the maximum amplitude of vibration generated in the rod-shaped conductive support that supports the filament. I found.

  Accordingly, the present invention provides a translucent valve hermetically sealed at the base, a pair of rod-like conductive supports disposed inside the bulb with the lower end embedded in the base, and each rod-like conductive member. An electrode terminal electrically connected to the lower end of the support and exposed to the outside of the bulb, a filament stretched between the pair of rod-like conductive supports, and a halogen compound gas sealed in the bulb A halogen light bulb including the rod-shaped conductive support that is supported and fixed to each of the rod-shaped conductive supports, and that extends on both sides of the support along the circumferential direction of the bulb and contacts the inner peripheral surface of the bulb. A vibration suppressor that suppresses vibration of the support, and a pair that protrudes inwardly formed on the valve at a position spaced apart from at least one end on both outer sides of at least one vibration suppressor. The protrusion of For example, there these pair of projections halogen bulb, characterized in that the maximum amplitude of the vibration suppression device is limited.

Preferred embodiments of the halogen bulb of the present invention are as follows.
(1) A pair of protrusions are provided on both outer sides of both ends of each vibration suppressor.
(2) Each of the pair of protrusions is formed on the valve at a position spaced from each of both ends of the vibration suppressor.
(3) The vibration suppressor is made of a metal wire. More preferably, both ends of the metal wire are bent into an arc shape or a ring shape, respectively.
(4) Each vibration suppressor is supported and fixed at the upper end of the rod-like conductive support or in the vicinity thereof.

  In the halogen light bulb of the present invention, a pair of protrusions protruding inside the translucent bulb are provided on both outer sides of both ends of the vibration suppressor supported and fixed to the rod-like conductive support that supports the filament. The pair of protrusions are arranged at positions spaced from at least one end of the vibration suppression tool.

  In the halogen light bulb of the present invention, for example, even when a large impact is applied when transporting by ship or aircraft, the maximum swing width of the vibration suppression tool is limited by the pair of protrusions of the translucent bulb. The rod-shaped conductive support that supports the vibration suppressor does not vibrate vigorously. Thereby, generation | occurrence | production of the crack in the base part of the translucent valve | bulb with which the lower end part of the rod-shaped electroconductive support body is embed | buried is suppressed. Therefore, the halogen bulb of the present invention hardly breaks the hermetic state of the light-transmitting bulb during transportation, and thus it is difficult to cause the problem of initial failure that the bulb cannot be used (lighted) in a short time.

  In the halogen bulb of the present invention, the distance between the pair of protrusions is wider than the length between both ends of the vibration suppressor. Therefore, the halogen light bulb of the present invention is configured such that when the rod-like conductive support that supports the filament and the vibration suppressor is inserted into the translucent bulb, the vibration suppressor is attached to the pair of protrusions of the translucent bulb. It is only necessary to arrange them between them, and it is not necessary to hold the vibration suppressor on the pair of protrusions (temporarily fixed so as not to move with respect to the bulb in contact with the pair of protrusions). It can be easily assembled in the same manner as (without the above projection).

  Further, in the halogen light bulb of the present invention, lighting and extinguishing are repeated, and even when the vibration suppressor repeats expansion (thermal expansion) and contraction, the vibration suppressor is held by the pair of protrusions. Therefore, almost no force is applied to the pair of protrusions from the vibration suppressor. For this reason, the generation | occurrence | production of the damage | wound in a translucent valve | bulb inner surface is suppressed, and it becomes difficult to produce the failure | damage of the valve | bulb starting from this damage | wound. Therefore, the halogen light bulb of the present invention exhibits good durability as well as a conventional halogen light bulb (one having no protrusion).

It is a partially notched front view which shows the structural example of the halogen bulb of this invention. It is a right view of the halogen bulb 10 shown in FIG. It is sectional drawing of the halogen bulb 10 cut | disconnected along the cutting line III-III line entered in FIG. However, except for the vibration suppression tools 15a and 15b, the portion on the back side of the drawing of the halogen bulb 10 is not shown.

  First, typical embodiments of the halogen bulb of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a partially cutaway front view showing a structural example of a halogen bulb of the present invention. FIG. 2 is a right side view of the halogen bulb 10 shown in FIG. 3 is a cross-sectional view of the halogen bulb 10 cut along the cutting line III-III entered in FIG. However, in FIG. 3 described above, portions other than the vibration suppression tools 15a and 15b are not filled in with respect to the rear side of the drawing of the halogen bulb 10.

  1 to 3 includes a light-transmitting bulb 11 hermetically sealed by a base portion 11a, and a pair of rod-like conductive members disposed inside the bulb 11 with a lower end portion embedded in the base portion 11a. The support bodies 12a and 12b are electrically connected to the lower ends of the respective bar-shaped conductive supports, and are stretched between the electrode terminals 13a and 13b exposed to the outside of the bulb 11 and the pair of bar-shaped conductive supports 12a and 12b. It is composed of the passed filament 14 and the halogen compound gas sealed in the bulb 11.

  The halogen light bulb 10 is supported and fixed to each of the rod-shaped conductive supports 12a and 12b, and contacts the inner peripheral surface of the bulb 11 extending along the circumferential direction of the bulb 11 to contact the rod-shaped conductive support. The vibration suppressors 15a and 15b for suppressing the vibrations of the support bodies 12a and 12b, and the outer sides of both ends of each vibration suppressor are formed on the inside of the valve 11 at positions spaced from each end. The main feature is that a pair of protruding protrusions 16a and 16b are provided, and the maximum swing width of the vibration suppression tools 15a and 15b is limited by the pair of protrusions 16a and 16b.

  Specifically, even when a large impact is applied to the halogen bulb 10 being transported and the rod-like conductive support 12a that supports the vibration suppressor 15a vibrates, the vibration suppressor 15a has both ends (valves) When the contact is made with either of the pair of protrusions 16a, 16b provided on both outer sides of the both ends in the circumferential direction, the maximum deflection width is limited because it cannot move further in the circumferential direction. For this reason, the rod-shaped conductive support 12a does not vibrate vigorously.

  Similarly, even when the rod-like conductive support 12b that supports the vibration suppression tool 15b vibrates, the vibration suppression tool 15b is provided on both outer sides of both ends (both ends in the circumferential direction of the valve). If any one of the pair of protrusions 16a and 16b is in contact with the protrusions 16a and 16b, the maximum deflection width is limited because the protrusion cannot be moved in the circumferential direction. For this reason, the rod-like conductive support 12b also does not vibrate vigorously.

  Therefore, in the halogen bulb 10, the occurrence of cracks in the base portion 11a of the translucent bulb 11 in which the lower ends of the rod-like conductive supports 12a and 12b are embedded is suppressed. For this reason, the halogen bulb 10 hardly breaks the hermetic state of the light-transmitting bulb 11 during transportation, and thus it is difficult to cause the problem of initial failure that the bulb cannot be used (lighted) in a short time.

  As shown in FIGS. 2 and 3, in the case of the halogen bulb 10, the pair of protrusions 16a and 16b included in the light-transmitting bulb 11 are vibration suppressors (vibration suppressors 15a) arranged between them. Or it arrange | positions in the position spaced apart from each edge part of the vibration suppression tool 15b). That is, in the halogen light bulb 10, the distance between the pair of protrusions 16a and 16b is wider than the length between both ends of the vibration suppressor disposed between them. Therefore, when the halogen light bulb 10 inserts the rod-shaped conductive support bodies 12a and 12b that support the filament 14 and the vibration suppression tools 15a and 15b into the translucent bulb 11, the vibration suppression tools 15a and 15b are attached to the halogen bulb 10. Each of the light transmitting valves 11 may be disposed between the pair of protrusions 16a and 16b, and the vibration suppression tools 15a and 15b are held by the pair of protrusions 16a and 16b (with respect to the valve in contact with the pair of protrusions). Since it does not need to be temporarily fixed so as not to move, it can be easily assembled in the same manner as a conventional halogen light bulb (having no projection).

  Moreover, in the halogen bulb 10, the lighting and extinguishing are repeated, and even when the vibration suppression tools 15a and 15b repeat expansion (thermal expansion) and contraction, each vibration suppression tool has a pair of protrusions. Since it is not hold | maintained at 16a, 16b, force is hardly applied to a pair of protrusion 16a, 16b from each vibration suppression tool. For this reason, generation | occurrence | production of the damage | wound on the inner surface of the translucent valve | bulb 11 is suppressed, and it becomes difficult to produce the damage of the translucent valve | bulb 11 which makes this scratch | origin a starting point. Therefore, the halogen light bulb 10 exhibits good durability as well as a conventional halogen light bulb (without the above-described protrusion).

  Hereinafter, the configuration and preferred embodiments of the halogen bulb of the present invention will be described in detail using the halogen bulb 10 shown in FIGS. 1 to 3 as a representative example.

  The translucent bulb 11 is hermetically sealed at its base portion 11a. The translucent bulb 11 is made of, for example, quartz glass.

  The rod-like conductive supports 12 a and 12 b are disposed inside the bulb 11, and the lower ends of the rod-like conductive supports 12 a and 12 b are embedded in the base 11 a of the translucent bulb 11. Each of the rod-like conductive supports 12a and 12b is made of a metal material such as tungsten, for example.

  The electrode terminals 13a and 13b are electrically connected to the lower ends of the rod-like conductive supports 12a and 12b, respectively, and are exposed to the outside of the bulb 11. The electrode terminals 13a and 13b are made of a metal material such as brass, for example.

  The filament 14 is stretched between a pair of rod-like conductive supports 12a and 12b. The filament 14 is made of tungsten, for example.

  In order to support the filament 14, electrically insulating support beams 17a and 17b can be provided between the rod-like conductive supports 12a and 12b. The support beams 17a and 17b are made of, for example, quartz glass. The filament 14 is supported between the support beams 17a and 17b by four wires 18a embedded in the support beam 17a and three wires 18b embedded in the support beam 17b.

The translucent bulb 11 is filled with a gas of a halogen compound (eg, CH ₂ Br ₂ , CH ₂ Cl ₂ , or CH ₂ Br ₂ and CH ₂ Cl ₂ ). The halogen compound gas is in a gas (gas) state when the halogen bulb 10 is lit and the bulb 11 is hot, and is solid when the bulb is extinguished and the bulb is cold (eg, room temperature). Including those in the state of. In addition to the halogen compound gas, the light-transmitting bulb 11 can be filled with nitrogen gas, oxygen gas, argon gas, or the like.

  The halogen light bulb of the present invention includes a vibration suppressor supported and fixed to each rod-like conductive support. The vibration suppressor extends on both sides of the rod-shaped conductive support body along the circumferential direction of the valve. The vibration suppressor comes into contact with the inner peripheral surface of the bulb, and as a result, the vibration of the rod-like conductive support due to the friction generated between the vibration suppressor and the valve (vibration generated in the normal use state of the halogen bulb). Suppress.

  In order to effectively suppress the vibration of the rod-shaped conductive support, the vibration suppressor is in contact with the inner peripheral surface of the valve at each part (preferably each end) on both sides of the rod-shaped conductive support. It is preferable.

  The vibration suppressor is made of, for example, a metal material typified by tungsten.

  As the vibration suppressor, for example, a plate or bar that is bent or bent along the circumferential direction of the valve can be used. Since it is easy to bend or bend along the circumferential direction of the bulb, it is preferable to use a rod (representative example, wire) as the vibration suppressor.

  The vibration suppressor is preferably composed of a metal wire. More preferably, both ends of the metal wire constituting the vibration suppressor are bent into an L shape, an arc shape, or a ring shape, respectively. Thereby, when the filament breaks during lighting of the halogen bulb, the gap between the end of the vibration suppressor provided in one rod-shaped conductive support and the end of the vibration suppressor provided in the other rod-shaped conductive support It is possible to suppress the occurrence of discharge in the case. If such a discharge occurs frequently, the bulb may be deformed or damaged by the high temperature of the discharge.

  In the halogen light bulb 10 shown in FIGS. 1 to 3, the vibration suppression tools 15 a and 15 b are made of metal wires, and both ends of the wires are bent into ring shapes.

  As shown in FIGS. 1-3, it is preferable that each of the vibration suppression tools 15a and 15b is supported and fixed at the upper end portions of the rod-like conductive supports 12a and 12b or in the vicinity thereof. When the clearance between each of the vibration suppression tools 15a and 15b and the pair of protrusions 16a and 16b provided on both outer sides of the vibration suppression tools 15a and 15b is set to a predetermined distance, the vibration suppression tools 15a and 15b are connected to the rod-shaped conductive support. It is better to fix 12a and 12b at the uppermost position as much as possible. The amplitude can be reduced. The portion in the vicinity of the upper end of the rod-shaped conductive support is a portion of the rod-shaped conductive support protruding to the inside of the valve, and is 1/3 of the length along the axial direction of the valve from the upper end. It means the part up to the length.

  The halogen light bulb of the present invention includes a pair of protrusions protruding inwardly formed on the bulb at positions spaced from at least one end on both outer sides of both ends of at least one vibration suppressor. .

  Note that the translucent bulb 11 shown in FIG. 3 has depressions formed on the outer peripheral surface of the bulb 11 at positions corresponding to the pair of protrusions 16a and 16b. The translucent bulb may not have a depression formed on the outer peripheral surface (the outer peripheral surface may be a cylindrical surface).

  The pair of protrusions are preferably provided on both outer sides of both end portions of each vibration suppression tool. In the halogen bulb 10 shown in FIG. 3, a pair of protrusions 16a and 16b are formed on both outer sides of both ends of the vibration suppressor 15a, and a pair of protrusions 16a and 16b are also formed on both outer sides of both ends of the vibration suppressor 15b. 16b is formed. Thereby, the vibration of the rod-shaped conductive supports 12a and 12b is effectively suppressed.

  Each of the pair of protrusions is preferably formed on the valve at a position spaced from each of both ends of the vibration suppressor. For example, the pair of protrusions 16a and 16b are formed on the valve 11 at positions spaced from both ends of the vibration suppressor 15a on both outer sides of the vibration suppressor 15a shown in FIG. . Thereby, even when the light bulb is repeatedly turned on and off, and the vibration suppressor 15a repeats expansion (thermal expansion) and contraction, force is applied from the vibration suppressor to the pair of protrusions 16a and 16b. There is no. Therefore, the halogen light bulb 10 exhibits better durability.

  As shown in FIG. 3, by adjusting the angle α formed by the center of the bulb and the apexes of the projections of the pair of projections 16a and 16b, the vibration suppressor is applied to the side surfaces of the projections 16a and 16b. It is also preferable to make contact at an angle as close to vertical as possible. As a result, a large impact is applied to the halogen light bulb being transported, and when the rod-like conductive supports 12a and 12b that support the vibration suppressors 15a and 15b vibrate vigorously, the vibration suppressors 15a and 15b are difficult to get over the protrusions. Become. For this reason, it is possible to reliably limit the maximum swing width of the vibration suppressor.

  In the halogen light bulb 10 shown in FIG. 3, the angle α is set to 100 degrees. The angle α is usually set within a range of 70 to 130 degrees, preferably 80 to 110 degrees.

  The halogen light bulb of the present invention can be particularly advantageously used for lighting equipment for a stage or a broadcasting station studio. A large-sized halogen bulb is used for such an illumination device. In a large halogen bulb, a pair of rod-shaped conductive supports supports a filament with a large mass, so if a large impact is applied during transportation, the rod-shaped conductive support vibrates violently, and this rod-shaped conductive support Cracks are particularly likely to occur at the base of the translucent bulb in which the lower end of the body is embedded. For this reason, in a large-sized halogen bulb, the hermetic sealing of the translucent bulb is broken, and an initial failure is likely to occur when the bulb cannot be used (lighted) in a short time. When the halogen bulb of the present invention is used, the occurrence of such an initial failure can be effectively suppressed.

DESCRIPTION OF SYMBOLS 10 Halogen light bulb 11 Translucent bulb | ball 11a Base 12a, 12b Rod-shaped electroconductive support body 13a, 13b Electrode terminal 14 Filament 15a, 15b Vibration suppression tool 16a, 16b Protrusion 17a, 17b Support beam 18a, 18b Wire

Claims (6)

A light-transmitting valve hermetically sealed at the base, a pair of rod-shaped conductive supports disposed inside the bulb with the bottom end embedded in the base, and a lower end of each rod-shaped conductive support A halogen bulb including an electrode terminal electrically connected and exposed to the outside of the bulb, a filament stretched between the pair of rod-shaped conductive supports, and a halogen compound gas sealed in the bulb. ,
The rod-shaped conductive support is supported and fixed to each of the rod-shaped conductive supports, and extends on both sides of the support along the circumferential direction of the valve to contact the inner peripheral surface of the valve to suppress vibration of the rod-shaped conductive support. And a pair of protrusions projecting inwardly formed on the valve at positions spaced from at least one end on both outer sides of both ends of the vibration suppression tool. A halogen bulb characterized in that the maximum deflection width of the vibration suppression tool is limited by the pair of protrusions.   The halogen light bulb according to claim 1, wherein the pair of protrusions are provided on both outer sides of both end portions of each vibration suppressor.   The halogen bulb according to claim 1 or 2, wherein each of the pair of protrusions is formed on the bulb at a position spaced from each of both end portions of the vibration suppression tool.   The halogen light bulb according to any one of claims 1 to 3, wherein the vibration suppressor is made of a metal wire.   The halogen light bulb according to claim 4, wherein both ends of the metal wire are bent into an arc shape or a ring shape, respectively.   The halogen light bulb according to any one of claims 1 to 5, wherein each vibration suppressor is supported and fixed at an upper end portion of the rod-shaped conductive support or a portion in the vicinity thereof.

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