KR20070078690A - Filament lamp - Google Patents

Abstract

A filament lamp is provided to prevent a filament from being derailed from a filament maintenance member by enclosing an outer periphery of the filament coil more than once. A filament lamp includes a filament coil(10), a filament maintenance member(14), and a supporter(12). The filament coil operates as a light emitting unit. The filament maintenance member contains the filament coil and protects the filament coil. The supporter includes an arm unit(13) which is elongated from the filament maintenance member. One end of the arm unit is contained in a seal unit(3) or a glass bead(8). The filament maintenance member encloses the filament coil more than once. The arm unit is arranged to be parallel to an axial direction of the filament lamp.

Description

Filament Lamps {FILAMENT LAMP}

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the structure of the filament lamp which concerns on this invention.

FIG. 2 is an enlarged cross-sectional view illustrating the arrangement relationship between the filament coil and the filament holding part shown in FIG. 1. FIG.

3 is an explanatory diagram of a test for confirming the effect of the filament lamp of the present invention.

Fig. 4 is a diagram showing various forms of the supporter in the filament lamp of the present invention.

Fig. 5 is a view showing the configuration of the single-ended filament lamp and the configuration of the single-ended filament lamp with the outer tube according to the present invention.

Fig. 6 is a view showing the structure of a filament lamp including a structure of a filament lamp having a cylindrical metal tube having a plurality of openings in a cylindrical surface and winding a plate-like plate material in a coil shape.

7 is a diagram showing a configuration of a filament lamp according to the prior art.

<Explanation of symbols for brief description of the drawings>

1, 18, 20 filament lamp 2 valve part

3 metal parts with 3 seals

5 External lead rod 6 Base part

7 Feeder 8 Glass Beads

9 Support 10 Filament Coil

11 tips 12 supporters

13 Arm 14 Filament Hold

15 Filament Lamp of the Invention or Filament Lamp of the Prior Art

16 Front Lens 17 Reflector

19 opening

The present invention relates to a filament lamp, and more particularly to a filament lamp characterized by a supporter for holding the filament coil of the filament lamp.

Conventional filament lamps are usually used in fixed places such as indoor lighting and store lighting. However, in recent years, it is increasingly used in the place where the vibration which is comparatively short periods, such as under a high price and a bridge, generate | occur | produces. Moreover, it is widely used also in moving objects, such as automobiles, and organic facilities.

Under such circumstances, high vibration resistance and impact resistance are required for the filament coil provided in the filament lamp. Moreover, in order to reduce the frequency of replacing the filament lamp, it is required to prolong the life of the filament lamp. As one of the causes of the short life span of the filament lamp, it is known from the past that the filament coil is dripped.

Conventionally, various techniques have been developed in order to suppress deformation of the filament coil in an environment exposed to vibration and shock. As such a technique, what is disclosed by Unexamined-Japanese-Patent No. 6-325737 and Japan Unexamined-Japanese-Patent No. 11-213958 is known, for example.

Japanese Patent Laid-Open No. 6-325737 discloses a technique for fixing a wire forming a filament coil in a hooked filament holding portion near the center of the filament coil.

In addition, Japanese Patent Application Laid-Open No. Hei 11-213958 installs short coil-shaped legs at both ends of the filament coil, and installs an anchor supporting the filament coil in the middle of the filament coil to prevent movement of the filament coil. The technique is described.

7 is a view showing the configuration of the filament lamp 101 according to the prior art, Figure 7 (a) is a view showing the overall configuration of the filament lamp 101, Figure 7 (b) is a filament of the filament lamp 101 It is an enlarged view which shows the supporter 109 holding the coil 108 and the filament coil 108. As shown in FIG.

As shown in these figures, the filament lamp 101 is provided with pinch-sealed seal portions 103 at both ends of the valve portion 102 made of glass, and the metal foil 104 and the metal foil in the seal portion 103. An external lead rod 105 connected to one end of the 104 is embedded. A base portion 106 is provided at one end that protrudes outside the outer lead rod 105. The other end of the metal foil 104 is connected to a power supply unit 107, and a filament coil 108 is connected to an inside of the valve unit 102 of the power supply unit 107. In addition, the filament coil 108 has shown the case of the double coil (it calls a double coil) here as an example.

The supporter 109 hooks and holds the filament holding part 110 formed at the tip of the filament coil 108 on a part of the secondary coil of the filament coil 108. In the case where the filament coil 108 is a short coil filament (also referred to as a single coil filament), the filament coil 108 is held by the wire itself forming the filament coil 108.

(Patent Document 1) Japanese Unexamined Patent Publication No. 6-325737

(Patent Document 2) Japanese Patent Application Laid-Open No. 11-213958

However, in the configuration of the filament lamp 101 according to the related art, since the filament holding part 110 fixes the filament coil 108 locally, a large vibration or impact is applied to the filament coil 108. In this case, there is a problem that the filament coil 108 deforms. For example, when a filament coil is a double coil, the filament holding part 110 is caught by the primary coil part which comprises the secondary coil of the filament coil 108 locally. Also in the case of the short coil filament, the wire constituting the filament coil 108 is caught locally. Therefore, when a large impact is applied to the filament coil 108 in such a state, the filament coil 108 is moved to the point where it is caught locally, and the pitch of the filament coil 108 is extended. There was a problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a filament lamp which improves the shock resistance and impact resistance of the filament in the filament lamp used in a place subject to a large vibration or shock in view of the above problems.

MEANS TO SOLVE THE PROBLEM This invention employ | adopts the following means in order to solve said subject.

The first means includes a filament coil serving as a light emitting portion, a filament holding portion for holding the filament coil, and a filament holding portion extending from the filament holding portion and having an end portion held by a seal portion or glass beads. A filament lamp having a supporter, wherein the filament lamp holding portion surrounds an outer periphery of at least one pitch of the filament coil.

A 2nd means is a filament lamp characterized by the 1st means WHEREIN: The said arm part is provided in parallel with the axial direction of a filament lamp.

The third means is a filament lamp according to the first means or the second means, wherein the filament holding portion is a coil-shaped member.

Embodiment

An embodiment of the present invention will be described with reference to FIGS. 1 to 6.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the filament lamp which concerns on this invention.

In the figure, 1 is a filament lamp composed of a halogen lamp, etc., 2 is a translucent valve portion, 3 is a seal portion provided at both ends of the filament coil 10, 4 is an airtight seal provided in the seal portion 3. Metal foil, 5 is an external lead rod, 6 is a base part, 7 is a feed part, 8 is glass beads, 9 is a support part, 10 is a filament coil made of tungsten, etc., 11 is the exhaust pipe in the valve part 2 12 is a supporter, 13 is a arm, and 14 is a filament holding part.

As shown in the figure, the filament lamp 1 has a seal portion 3 at both ends of the valve portion 2, and the seal portion 3 is connected to both ends of the metal foil 4 and the metal foil 4, respectively. The feed section 7 protruding from the outer lead rod 5 and the valve 2 is provided. At the other end of the outer lead rod 5, a base portion 6 for protecting the outer lead rod 5 is provided. In the valve part 2, a rare gas such as argon and a small amount of halogen gas such as bromine are encapsulated. Moreover, in the valve part 2, the electric power feeding part 7, the glass vis 8, the support part 9, the filament coil 10, and the supporter 13 are arrange | positioned.

The glass bees 8 are arranged in a direction orthogonal to the filament coil axis, the metal foil 4 embedded in the seal portion 3 and the feed portion 7 connected to one end thereof, and the other feed portion 7. The support part 9 and the arm part 13 of the supporter 12 which are extended from the fixing part are being fixed in the one seal part 3 side.

The supporter 12 is comprised from the arm 13 and the filament holding part 14. One end side of the filament holding portion 14 is composed of a coil-shaped member, the inner diameter of the filament holding portion 14 is larger than the outermost outer diameter of the filament coil (10). The filament holding portion 14 holds the filament coil 10 in an approximately center portion of the filament coil 10 so as to surround the outer circumference over a length of one pitch or more, and the other end of the filament holding portion 14 is the arm ( 13). The arm 13 which extends to the other end side of the filament holding part 14 extends substantially parallel to the coil axis direction of the filament coil 10, and the edge part of the arm 13 is fitted by the glass beads 8 and fixed. It is.

As described above, since the filament coil 10 is held by the supporter 12 at approximately the center portion of the filament coil 10, even if the filament coil 10 tries to move under a large vibration or shock, the filament coil 10 10) can be kept surely. In detail, since the inner diameter of the filament holding portion 14 is larger than the outermost outer diameter of the filament coil 10, the filament coil 10 freely holds the inside of the filament holding portion 14 for small vibrations or impacts. The filament coil 10 suppresses movement of the filament coil 10 due to the movement of the vibration and impact. In addition, since the arm 13 is disposed substantially parallel to the coil axis of the filament coil 10, when the arm 13 itself also moves smoothly when subjected to a very large vibration or impact, the filament holding part ( 14) moves gently in the same direction as the moving direction of the filament coil 10, it is possible to reliably prevent deformation due to vibration or impact of the filament coil (10).

2 is an enlarged cross-sectional view for explaining the arrangement relationship between the filament coil 10 and the filament holding portion 14. In addition, here, the case where a single coil is used as the filament coil 10 is demonstrated.

The filament coil 10 is formed by winding a tungsten wire having a wire diameter d at a constant coil pitch. When the length of one coil pitch of the filament coil 10 is P1 and the length of the filament holding portion 14 in the coil axial direction is L2, between the filament coil 10 and the filament holding portion 14 , L2> P1. For this reason, the filament holding part 14 does not sink between pitches of the filament coils 10, and the filament coil 10 does not move beyond the filament holding part 14. That is, when the filament coil 10 moves largely, the filament holding part 14 is locally caught by a part of the tungsten wire constituting the filament coil 10, and the coil pitch extends with the part as a point. This can prevent the occurrence of a problem.

In addition, even if L2? P1, if the L2 is larger than the gap S1 (the portion of the line diameter d drawn from the pitch P1) of the filament coil 10, the filament holding portion 14 sinks into the filament coil 10. You can prevent it. In other words, if L2> S1, the effect is somewhat small, but the impact resistance is improved, and the deformation of the filament coil can be prevented.

Moreover, when the outermost outer diameter of the filament coil 10 is D1, and the inner diameter of the filament holding part 14 is D2, it has a relationship which becomes D2> D1. For this reason, when the filament coil 10 receives a slight vibration, the filament coil 10 can move freely. In addition, when the filament coil 10 tries to move largely due to a large vibration or shock, the filament holding portion 14 holds the filament coil 10 and suppresses the movement of the filament coil 10. Even if there is a shock or impact, the deformation of the filament coil 10 can be prevented.

In FIG. 2, when the filament holding portion 14 is formed of a coil-shaped member, in addition to the above conditions, L2> P1 and D2> D1, the length of one coil pitch of the filament holding portion 14 is determined. In the case of P2, the length P1 of one coil pitch of the filament coil 10 is set to P1> P2. For this reason, the coil of several turns of the filament holding part 14 is arrange | positioned with respect to the length of one turn of the filament coil 10, and can hold | maintain the filament coil 10 more reliably.

In addition, in the case of the single coil shown in FIG. 2, with respect to the wire diameter d of the wire forming the filament coil 10, the gap S2 of the coil of the filament holding portion 14 (filament holding portion ( The relationship between the coil pitch length of the coil (14) and the length excluding the thickness of the wire rod constituting the coil) is d> S2. In addition to the above conditions L2> P1, D2> D1, and P1> P2, by satisfying the condition of d> S2, the wire of the filament coil 10 is doubled in the gap S2 of the filament holding portion 14. In the case of a coil, the primary coil) does not sink, and the filament coil 10 can be held reliably.

In addition, although the invention of this embodiment demonstrated the case where a single coil was used as the filament coil 10, when the filament coil 10 is a double coil, the wire diameter d of said wire is a primary coil. In the case of the coil diameter and the triple coil, the wire diameter d of the wire is the coil diameter of the secondary coil. That is, let d be the outer diameter of the coil before the 1st order of the coil which comprises outermost outer diameter.

3 is an explanatory diagram of a test for confirming the effect of the filament lamp of the present invention.

Fig. 3 (a) is a diagram showing the configuration of a lighting tool having a filament lamp therein and used for a test for confirming the effect, and the left side of Fig. 3 (a) is a front view of the lighting tool, and Fig. 3 The figure on the right side of (a) is a side view of a lighting tool.

In these figures, 15 is a filament lamp of the present invention or a prior art filament lamp, 16 is a front lens, 17 is a shield beam type reflector disposed on an optical axis in the light exit direction in the reflector 17.

The filament lamp of the prior art is a filament lamp of the prior art shown in Fig. 7 and is a filament lamp provided with a caulking supporter.

In both filament lamps, the outermost diameter φ of the filament coil was 1.4 mm, the length 1 of the filament coil was 19 mm, and the wire rod used for the supporter was made of tungsten, and the diameter φ was 0.3 mm.

Fig. 3B is a diagram showing a rotation test apparatus used for a test for confirming the effect, and this rotation test apparatus is a device for rotating a filament lamp in a horizontal or vertical direction during lighting.

In the test, the filament lamp of the present invention and the filament lamp of the prior art are turned on at an input of 10 OV and 30 OW, the filament temperature is turned on with a state of 320 OK, and the arm radius supporting the luminaire is 30 cm in the vertical direction. It was performed by rotating 180 degrees and 360 degrees horizontally, suddenly stopping, conversely, further rotating, and suddenly stopping. The rotation speed was performed at 60 degrees / second.

Fig. 3 (c) is a table showing the test results by the rotation test apparatus described above, and the filament lamp of the prior art as the lighting time is disconnected in 25 hours in the horizontal direction and 23 hours in the vertical direction. did. In contrast, the filament lamp of the present invention did not disconnect even after 100 hours in both the horizontal and vertical directions. Thus, it can be seen that according to the present invention, a filament lamp having excellent impact resistance can be obtained.

It is a figure which shows the various forms of the supporter in the filament lamp of this invention.

In addition, since the structure of the code | symbol shown by such drawing corresponds to the structure of the eastern code shown in FIG. 1, description is abbreviate | omitted.

4 (a) shows a filament lamp 1 having two supporters 12 with respect to the filament coil 10, and ends of the arm 13 of each supporter 12 are each valve part ( It is fixed to the glass beads 8 provided in both sides of 2).

FIG. 4B is a view showing a filament lamp 1 having two supporters 12 with respect to the filament coil 10, wherein ends of the arm 13 of each supporter 12 are respectively filament lamps. It is fixed to the seal part 3 of both ends of (1).

FIG. 4 (c) shows a filament lamp 1 having two supporters 12 with respect to the filament coil 10, and an end portion of the arm 13 of each supporter 12 is a filament lamp ( It is fixed to the seal part 3 of 1 side of 1).

FIG. 4 (d) shows a filament lamp 1 having three supporters 12 with respect to the filament coil 10, and an end portion of the arm 13 of each supporter 12 is a filament lamp ( It is fixed to the seal part 3 at both ends of 1).

4 (e) is a view showing a filament lamp 1 having four supporters 12 with respect to the filament coil 10, and an end portion of the arm 13 of each supporter 12 is a filament lamp ( It is fixed to the seal part 3 at both ends of 1).

The filament lamp of this invention can be various forms which support the number of supporters and supporters in a filament lamp, as shown to FIG. 4 (a)-FIG. 4 (e).

Fig. 5A is a diagram showing the configuration of a single-ended filament lamp according to the present invention, and Fig. 5B is a diagram showing the configuration of a single-ended filament lamp with an outer tube according to the present invention.

In addition, since the structure of the code | symbol shown in these figures corresponds to the structure of the eastern code shown in FIG. 1, description is abbreviate | omitted.

As shown in these figures, the supporter 12 of the present invention is applicable to a single-ended filament lamp and a single-ended filament lamp with an outer tube.

In addition, although the case where the coil shape member which wound the wire rod in coil shape was used as the filament holding part 14 of the supporter 12 was demonstrated in FIG. 1, FIG. 4, FIG. The shape is not limited to the coil-shaped member, but may be formed of a cylindrical member, a mesh member, or the like.

FIG. 6A is a view showing the configuration of a filament lamp having a cylindrical metal tube having a plurality of openings 19 in a cylindrical surface as the filament holding portion 18 of the supporter 12. FIG. ) Is a diagram showing the configuration of a filament lamp having a flat plate-like plate material wound in a coil shape as the filament holding portion 20 of the supporter 12.

In addition, the structure of the code | symbol shown in these figures corresponds to the structure of the eastern code shown in FIG.

In addition, although not shown in figure, the filament holding part may be comprised by a mesh cylinder or the like. However, in consideration of effectively utilizing the light emitted from the filament coil, the filament holding portion preferably has a gap provided in the filament holding portion.

According to the invention according to claim 1, the filament coil as a light emitting portion, a filament holding portion for holding the filament coil, and a filament holding portion extending from the filament holding portion, the end is held by the seal portion or glass beads In the filament lamp having a supporter, the filament holding portion surrounds the outer periphery of one pitch or more of the filament coil, thereby avoiding the problem that the filament is dropped from the filament holding portion and the coil pitch is extended. Moreover, even if a big impact is received in the direction orthogonal to a coil shaft, a filament coil can be hold | maintained reliably.

According to the invention of claim 2, since the arm portion is provided in parallel with the axial direction of the filament lamp, the arm itself also moves slowly when subjected to a very large vibration or impact, so that the filament holding portion moves the filament coil. It gently moves in the same direction as the direction, and it is possible to reliably prevent deformation due to vibration or impact of the filament coil.

According to the invention as set forth in claim 3, the filament holding member is constituted by a coil-like member, so that the filament coil can move freely with respect to minute vibrations, and when the filament coil moves largely due to large vibration or impact. Since the filament coil storage holder holds the filament coil and suppresses the movement of the filament coil, it is possible to prevent the filament coil from deforming even when there is a large vibration or impact.

Claims (3)

And a supporter comprising a filament coil as a light emitting part, a filament holding part for holding the filament coil, and a arm extending from the filament holding part and having an end portion held by a seal part or glass beads. Filament lamp, The filament holding portion, the filament lamp, characterized in that surrounding the outer periphery of the pitch of the filament coil. The filament lamp according to claim 1, wherein the arm portion is provided in parallel with the axial direction of the filament lamp. The filament lamp according to claim 1 or 2, wherein the filament holding portion is a coil-shaped member.

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