JP6221055B2 - Automotive bulb - Google Patents

Description

  The present invention relates to an automotive light bulb having a getter in the vicinity of a filament and having excellent vibration resistance.

  Conventionally, incandescent bulbs are useful for various applications such as automobile headlamps and instruments. Usually, a getter is arranged in the glass bulb for the purpose of adsorbing the impure gas emitted from the filament, the lead-in wire, the glass and the like. The getter is disposed in the vicinity of the temperature raising portion, specifically, in the vicinity of the light emitting portion of the filament in consideration of the impure gas adsorption efficiency.

  As such a conventional incandescent bulb, one in which a metal getter material powder is applied to at least one of an introduction line and an anchor line by an electrophoresis method is known (for example, see Patent Document 1). ).

  Further, as another conventional incandescent bulb, one in which a mixture of a metal getter material powder and a silicone varnish is attached in the vicinity of a filament of an introduction line and an anchor line is known (for example, see Patent Document 2).

  By the way, in recent years, the use of blue glass is widely used as a light bulb for automobiles. However, since blue glass absorbs light having a long wavelength, the transmittance over all wavelengths compared to transparent glass. Is small. For this reason, in order to maintain the brightness, it is necessary to increase the brightness of the filament. Along with this, it is necessary to increase the amount of getter and increase the amount of impure gas adsorbed.

Japanese Patent Publication No. 47-29276 Japanese Patent Publication No. 48-12150

  In the above-described automobile light bulb, when blue glass is used, the light transmittance is reduced by 35% as compared with transparent glass. Therefore, in order to satisfy the characteristics obtained by changing only the color temperature, that is, in order to obtain white light (color temperature 4000K), the filament diameter is further reduced to increase the temperature of the filament to obtain a luminous flux value. Need to design high.

  However, with the current amount of getter, the impure gas generation speed due to the temperature rise of the filament during lighting is faster than the gas adsorption speed by the getter.

  Therefore, the luminous flux as an automobile light bulb is quickly reduced. Moreover, there is a problem in that filament breakage is likely to occur and the life durability time is shortened.

  Therefore, when the method disclosed in Patent Documents 1 and 2 is used to increase the amount of getter attached to at least one of the introduction line and the anchor line of the automotive light bulb, vibration and impact are large. In this case, since the introduction line and the anchor line that support the getter are greatly shaken, the filament is easily broken as a result. In order to cope with this, when the strength of the lead-in wire and the anchor wire is increased (the wire diameter is increased), the movement of the filament is forced, and the filament having a small wire diameter is easily broken by vibration or impact.

  In other words, as the characteristics of a light bulb for automobiles, there is a contradictory relationship between extending the life and improving the brightness, and it is difficult to obtain both characteristics at present.

  In view of the above problems, the present invention secures the strength of the introduction line, the anchor line, and the filament against vibration and impact, and attaches more getters than the current amount to at least one of the introduction line and the anchor line, An object of the present invention is to provide an automobile light bulb capable of extending the life and improving the luminance.

  An automotive bulb according to claim 1 of the present invention includes a glass bulb, a filament disposed in the glass bulb, a pair of lead wires introduced into the glass bulb and supporting both side portions of the filament, An automobile light bulb comprising: an anchor line disposed between the pair of lead wires and suppressing swinging of the filament; and a getter attached to at least one of the anchor wire and the lead wire. And at least one of the lead-in wires includes a getter fixing portion having a facing portion formed by being bent in the vicinity of the filament, and the getter is attached across the facing portion of the getter fixing portion. It is characterized by.

  According to such a configuration, the getter is fixed across the opposing portion of the getter fixing portion formed by being bent in the vicinity of the filament, so that at least one of the anchor line and the introduction line is double the current amount. The above getters can be attached. And more than twice the current amount of getters are attached in the vicinity of the filament, so that the getter can act actively by the heat of the filament to absorb and store the generated gas, extending the life of the bulb for automobiles In addition, the luminance can be improved. Further, since at least one of the anchor line and the introduction line is bent in the vicinity of the filament, the bent part of at least one of the anchor line and the introduction line is not in contact with the light emitting part of the filament, and the filament Since the heat can be lit without being taken away by at least one of the anchor line and the lead-in line, the initial luminous flux value becomes high. In addition, the luminous flux maintenance factor does not rapidly decrease and gradually decreases, so that the luminous flux maintenance factor can be improved. In addition, vibration and impact can be absorbed by the bent portion, and the strength of at least one of the anchor line and the introduction line can be improved, while the filament is formed by at least one of the anchor line and the introduction line. Since the oscillation of the filament is suppressed, the strength of the filament can be improved.

  The automotive light bulb according to claim 2 of the present invention is characterized in that the facing portion of the getter fixing portion is a portion formed in a wave shape, a concave shape, or a parallel line shape.

  According to this configuration, the massive getter can be easily attached to the facing portion of the getter fixing portion. For this reason, it is possible to extend the life of the filament. Further, when the facing portion of the getter fixing portion is corrugated or concave, since bending is performed in the vicinity of the filament, the strength of at least one of the anchor line and the introduction line is improved accordingly. When the getter fixing portion is formed in parallel lines, a wide getter can be attached, and the life of the filament can be extended.

An automotive light bulb according to claim 3 of the present invention includes a glass bulb, a filament disposed in the glass bulb, a pair of lead wires introduced into the glass bulb and supporting both sides of the filament, One or a plurality of anchor wires arranged between the pair of lead wires, and including an anchor wire that suppresses swinging of the filament, and a getter attached to at least one of the anchor wire and the lead wire . In the vicinity of the filament, at least one of the anchor line and the lead-in line is provided with a getter fixing part having an opposing part, and the getter is attached across the opposing part of the getter fixing part. .

  According to such a configuration, since the getter is fixed across the opposing portion of the getter fixing portion in the vicinity of the filament, it is possible to attach more than twice the current amount of getters. And, since getters more than double the current amount are attached in the vicinity of the filament, the getter actively acts by the heat of the filament, and the impure gas generated can be adsorbed and stored, and it has a long life as an automotive bulb And improvement in luminance can be achieved. In addition, since the anchor wire suppresses the swing of the filament, the strength of the filament can be improved. Further, by arranging a plurality of anchor lines, it is possible to increase the fixed amount of the getter as a whole.

  The light bulb for automobiles according to claim 4 of the present invention is characterized in that the glass bulb is blue.

  According to this configuration, the red transmittance of the filament is lowered, and good white light can be obtained.

  According to a fifth aspect of the present invention, there is provided a light bulb for an automobile, wherein the getter is made porous by applying a mixed liquid obtained by uniformly mixing an alumina-based ceramic bond and zirconium powder to an anchor wire, and then drying by heating. It is characterized by being.

  According to this configuration, the adhesion of the getter is improved, and the position where the getter is attached is maintained even if the getter is vibrated or impacted.

  According to a sixth aspect of the present invention, there is provided a light bulb for an automobile, wherein the anchor wire is raised at a position facing the light emitting portion of the filament, and the lower end of the light emitting portion of the filament from the upper end portion of the rising portion. An extended portion that is bent and extended toward the top, and a bent portion that is bent upward from below the light emitting portion of the filament, and the getter fixing portion is formed at the upper end of the rising portion. It is characterized by.

  According to such a configuration, the swing range of the filament can be regulated by surrounding the light emitting portion of the filament with the rising portion of the anchor line, the extending portion, and the bent portion.

  In the automobile light bulb according to claim 7 of the present invention, the two support portions of the filament are bent so as to be curved outward, and intersect the tip portion of the introduction line from the outside to the inside, Alternatively, it intersects the leading end of the introduction line from the inside to the outside.

  According to such a configuration, the filament can be arranged in a greatly curved manner in the glass bulb, so that the strength of the filament can be improved.

  As described above, according to the present invention, a getter larger than the current amount is attached to at least one of the introduction line and the anchor line while ensuring the strength of the introduction line, the anchor line, and the filament against vibration and impact. Thus, the lifetime can be extended and the luminance can be improved.

The perspective view which shows the light bulb for motor vehicles based on the 1st Embodiment of this invention. The front view which shows the modification of the light bulb for motor vehicles based on the embodiment Side view showing a modification of the automotive bulb according to the embodiment The perspective view which shows the other modification of the light bulb for motor vehicles based on the embodiment The perspective view which shows the light bulb for motor vehicles based on the 2nd Embodiment of this invention. The perspective view which shows the modification of the light bulb for motor vehicles based on the embodiment The perspective view which shows the other modification of the light bulb for motor vehicles based on the embodiment The perspective view which shows the further another modification of the light bulb for motor vehicles based on the embodiment. The perspective view which shows the light bulb for motor vehicles based on the 3rd Embodiment of this invention. The perspective view which shows the modification of the light bulb for motor vehicles based on the embodiment The perspective view which shows the other modification of the light bulb for motor vehicles based on the embodiment The perspective view which shows the light bulb for motor vehicles based on 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
(First embodiment)
First, a schematic configuration of the automotive bulb according to the first embodiment will be described with reference to FIG.

  The automotive light bulb 1 according to the first embodiment includes a glass bulb 2, a filament 3, a pair of lead-in wires 4, 4, a pair of anchor wires 5, 5, and a getter 6.

  The glass bulb 2 is made of blue soft glass (PH465 (trade name) manufactured by Philips) containing cobalt oxide having a diameter of 9.4 mm, and is connected to the sealing portion 20 and the sealing portion 20. It has a spherical portion 21. Further, the glass bulb 2 is filled with a mixed gas of 6% or less of nitrogen and a rare gas (argon, krypton, xenon).

  The filament 3 includes a light emitting unit 30 wound in a coil shape and a pair of support units 31 and 31 extending from both ends of the light emitting unit 30. The filament 3 is arranged in an arc shape on the spherical portion 20 side of the glass bulb 2. Further, the pair of support portions 31, 31 are extended so as to be largely opened toward the lower side. The filament 3 is made of tungsten having a thickness of 3.5 MG: φ34 μm to 4.0 MG: φ36.4 μm.

  The pair of lead-in wires 4, 4 includes lead-in portions 40, 40 that become narrower from the base end side toward the middle portion, and extension portions 41, 41 that open greatly from the middle portion toward the tip portion. have. Introducing portions 40 and 40 and extending portions 41 and 41 are introduced from the sealing portion 20 into the glass bulb 2. Further, a glass bead 7 is fixed to the midway part of the pair of lead wires 4, 4 so as to straddle the midway part of the pair of lead wires 4, 4. By doing so, the position of the pair of lead-in wires 4 and 4 is fixed inside the glass bulb 2. And it arrange | positions so that both the support parts 31 and 31 of the filament 3 may cross | intersect at the front-end | tip part of the extension parts 41 and 41 of a pair of introduction wires 4 and 4, The intersection is fixed by welding. Specifically, the two support portions 31 of the filament 3 intersect the distal end portions of the extension portions 41 and 41 of the pair of introduction wires 4 and 4 from the inside toward the outside. In this case, the lengths of both the support portions 31 and 31 of the filament 3 and the lengths of the extending portions 41 and 41 of the pair of lead wires 4 and 4 are set to be substantially the same length. The pair of lead-in wires 4 and 4 are φ0.3 nickel-plated dumet wires.

  The glass beads 7 are made of lead-free soft glass with φ3.6.

As the pair of anchor wires 5 and 5, molybdenum wires having a diameter of 0.12 to 0.15 mm are used. Further, the pair of anchor lines 5 and 5 are arranged so as to open larger toward the light emitting unit 30 of the filament 3. The anchor lines 5 and 5 are bent up from the upper end portion of the rising portion 50 to the position facing the light emitting portion 30 of the filament 3 and downward from the light emitting portion 30 of the filament 3. And a bent portion 52 that is bent in an arc shape from the lower side to the upper side of the light emitting portion 30 of the filament 3.
Then, the axis of the light emitting part 30 of the filament 3 is arranged so as to pass through the center of curvature of the bent part 52 of the anchor line 5. By doing so, the bent portion 52 of the anchor wire 5 is not in contact with the light emitting portion 30 of the filament 3, and the heat of the filament 3 is not taken away by the anchor wire 5 and can be lit, so the initial light flux value is high. Become. In addition, the luminous flux maintenance factor does not rapidly decrease and gradually decreases, so that the luminous flux maintenance factor can be improved.

  Further, a getter fixing portion 8 to be described later is formed on the rising portion 50 of the anchor wire 5, whereby the getter 6 is positioned in the vicinity of the light emitting portion 30 of the filament 3, while the extending portion 51 of the anchor wire 5. And the bent portion 52 regulate the swing of the filament 3.

  Further, the bent portion 52 and the extended portion 51 of the anchor wire 5 are greatly opened, and the swing of the filament 3 is not restricted in this opening portion.

  The reason why the extending portion 51 extends from the upper end portion of the rising portion 50 toward the lower side of the light emitting portion 30 of the filament 3, that is, toward the light emitting portion 30 side of the filament 3, is as follows. This is because the fixing position 6 is positioned in the vicinity of the light emitting portion 30 of the filament 3.

  And as above-mentioned, a pair of anchor lines 5 and 5 are the getter fixed parts 8 formed by bend | folding in the waveform in the vicinity of the light emission part 30 of the filament 3 (upper end part of the anchor lines 5 and 5). I have. In this case, since the getter fixing portion 8 has a wave shape, the facing portion 80 is a plurality of line segments bent in different directions (line segments of concave portions and convex portions constituting the wave shape).

  Since the getter 6 more than twice the current amount (6 times or more) is attached in the vicinity of the filament 3, the getter 6 can actively act by the heat of the filament 3 to absorb and store the generated gas. In addition, it is possible to extend the life and improve the luminance as a light bulb for an automobile. In addition, since the anchor wires 5 and 5 are bent in the vicinity of the filament 3, vibrations and impacts can be absorbed by the bent portions, and the strength of the anchor wires 5 and 5 can be improved. Since the filament 3 is held (supported) by the anchor wires 5 and 5, the strength of the filament 3 can also be improved.

  The getter 6 is formed to be porous by applying a mixed liquid obtained by uniformly mixing an alumina ceramic bond and zirconium powder to the anchor wires 5 and 5 and then drying by heating. The getter 6 is attached in a lump shape across the opposing portions (continuous concave portions and convex portions) 80 of the getter fixing portions 8 and 8 of the anchor lines 5 and 5. That is, the getter 6 is attached in a granular shape so as to be along the axial direction of the rising portions 50 of the anchor lines 5 and 5. Therefore, the getter 6 more than twice the current amount (6 times or more) can be attached. Further, since the getter 6 is in the form of a granule, the getter 6 is positioned on the side of the light emitting portion 30 of the filament 3 so that the light emitting portion 30 of the filament 3 is located within the range of the long axis of the getter 6. It is set to be. By doing so, the lifetime of the filament 3 and the brightness can be improved.

  As described above, according to the automobile light bulb according to the first embodiment of the present invention, the anchor wire 5 and the filament 3 with respect to vibration and impact are secured, and the anchor wire 5 has more getters than the current amount. 6 can be attached to extend the life of the light bulb for automobiles and improve the luminance.

  The automobile light bulb according to the present invention can be variously modified without being limited to the first embodiment.

For example, in the first embodiment, the pair of anchor lines 5 and 5 are arranged so as to open larger toward the light-emitting portion 30 of the filament 3, but as shown in FIG. You may arrange | position so that 5 and 5 may be parallel. In this case, the getter 6 is attached in a lump shape (columnar shape) across a pair of parallel getter fixing portions 8 and 8 and across a continuous facing portion 80. In addition, as shown in FIG. 3, the three anchor lines 5, 5, 5 may be arranged in parallel to increase the amount of getter 6 to be fixed.
(Second Embodiment)
Next, a schematic configuration of the automotive bulb according to the second embodiment will be described with reference to FIGS. 4 and 5. In these drawings, the same reference numerals as those in FIG. 1 denote the same or corresponding elements, and the difference is the configuration of the anchor lines. This will be described below.

  The pair of anchor lines 5A, 5A are bent up toward the lower portion of the light emitting unit 30 of the filament 3 from the upper end portion of the rising portion 50A and the upper end portion of the rising portion 50A. A first extending portion 51A that is extended, a first bent portion 52A that is bent upward from below the light emitting portion 30 of the filament 3, and an upper end portion of the first bent portion 52A that extends toward the rising portion 50A. A second extending portion 53A, and a second bent portion 54A that is bent from the second extending portion 53A toward the rising portion 50A. That is, the first extending portion 51A, the first bent portion 52A, the second extended portion 53A, and the second bent portion 54A form an annular holding portion H for the light emitting portion 30 of the filament 3. .

  The pair of anchor wires 5A and 5A can regulate the swing of the filament 3 while being synchronized with the swing of the filament 3 by the annular holding portion H.

  As described above, according to the light bulb for an automobile according to the second embodiment of the present invention, the anchor wire 5A has a larger amount of getter than the current amount while ensuring the strength of the anchor wire 5A and the filament 3 against vibration and impact. 6 can be attached to extend the life and improve the luminance.

  The automobile light bulb according to the present invention can be variously modified without being limited to the second embodiment.

  For example, in the second embodiment, the pair of anchor lines 5A and 5A are arranged so as to open larger toward the light emitting unit 30 of the filament 3, but as shown in FIG. The 5A rising portions 50A may be arranged in parallel, and the annular holding portions H may be arranged on both sides of the light emitting portion 30 of the filament 3. In this case, the getter 6 extends over the pair of parallel getter fixing portions 8 and 8 and the columnar body 80 is opposed to the wavy getter fixing portions 8 and 8 (straddling a plurality of continuous line segments). It is formed in a shape.

  In the second embodiment, the second bent portion 54A of the anchor wire 5A is bent from the second extending portion 53A toward the rising portion 50A. However, as shown in FIG. You may make it bend | fold so that the upper end part of 50 A of raising parts may be met. In this case, the getter fixing portion 8A is formed at a facing portion 80A between the second bent portion 54A bent along the upper end portion of the rising portion 50A and the upper end portion of the rising portion 50A.

Further, in the second embodiment, the wavy getter fixing portion 8 is formed at the upper end portion of the rising portion 50A of the anchor line 5, but as shown in FIG. 8, the upper end portion of the rising portion 50A, The getter fixing portion 8Aa may be formed in a portion 80Aa facing the tip of the second bent portion 54A.
(Third embodiment)
Next, a schematic configuration of the automotive bulb according to the third embodiment will be described with reference to FIG. 9, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts, and the difference is the configuration of the filament 3 and the anchor line 5. This will be described below.

  In the filament 3, the left support 31 is bent into an S shape and the right support 31 is bent into an inverted S shape as viewed from the front in FIG. 9. More specifically, the support portions 31 and 31 of the filament 3 are bent so that the support portions 31 and 31 are curved outward, then are bent so that the support portions 31 and 31 are bent inward, and further, are end portions bent inward. Are welded so as to intersect from the inside to the outside with respect to the tip portions of the extending portions 41, 41 of the pair of lead wires 4, 4. By doing so, the whole filament 3 is greatly curved as compared with FIGS. 1 and 4, and the strength of the filament 3 is improved.

  The pair of anchor lines 5B and 5B are bent toward the lower side of the light emitting portion 30 of the filament 3 from the upper end portion of the rising portion 50B raised at a position facing the light emitting portion 30 of the filament 3 and the upper end portion of the raised portion 50B. First extending portions 51B and 51B extended from the light emitting portion 30 of the filament 3, a bent portion 52B bent upward, and a first portion extending from the upper end of the bent portion 52B toward the rising portion 50B. 2 extending portion 53B.

  A wave-shaped getter fixing portion 80B is formed at the upper end of the rising portion 50B.

  In this case, the first extending portion 51B, the bent portion 52B, and the second extending portion 53B of the anchor wire 5 regulate the swing of the filament 3 while being synchronized with the swing of the filament 3. Further, the restriction on the swing of the filament 3 is increased by the second extending portion 53B as compared with the case of FIG.

  The getter 6 is formed across a plurality of opposed portions of the wave shape of the getter fixing portion 8, and is formed on the side of the light emitting portion 30 of the filament 3.

  As described above, according to the light bulb for an automobile according to the third embodiment of the present invention, the anchor wires 5B and 5B are provided with the current amount while securing the strength of the anchor wires 5B and 5B and the filament 3 against vibration and impact. More getters 6 can be attached to extend the life and improve the luminance. Further, since the filament 3 is more curved than in the case of FIG. 1, the strength of the filament 3 can be improved.

  The light bulb for automobiles according to the present invention can be variously modified without being limited to the third embodiment.

  For example, in the third embodiment, both the support portions 31 and 31 of the filament 3 are bent into an S-shape on the left side and an inverted S-shape on the right side. However, as shown in FIG. After the two support portions 31 and 31 are bent so that they are curved outward, the ends bent outward are made to the distal ends of the extension portions 41 and 41 of the pair of introduction lines 4 and 4. The welding may be performed by crossing from the outside toward the inside. Also in this case, as described above, the entire filament 3 is greatly curved, so that the strength of the filament 3 can be improved.

In the third embodiment, the wave-like getter fixing portion 8 is used. However, as shown in FIG. 11, a concave getter fixing portion 8B may be formed. In this case, a pair of parallel line segments becomes the opposed portion 80B, and a substantially cubic (rectangular prism) getter 6 is formed.
(Fourth embodiment)
Next, a fourth embodiment will be described. As described above, the bent anchor wire 5 is used to hold the filament 3 in any of the first to third embodiments. However, as shown in FIG. 12, only the rising portion 50C is used. The substantially linear anchor line 5C comprised by these may be sufficient. In this case, the pair of substantially straight anchor lines 5C, 5C may be arranged so as to be symmetrical with respect to a straight line orthogonal to the axis of the light emitting unit 30 of the filament 3. Further, a wavy getter fixing portion 8 is formed at the upper ends of the rising portions 50C and 50C of the pair of anchor lines 5C and 5C.

  In this case, the pair of anchor wires 5C and 5C are restricted from swinging in only one direction of the filament 3.

  As described above, according to the light bulb for an automobile according to the fourth embodiment of the present invention, the anchor wire 5C has a stronger getter than the current amount while ensuring the strength of the anchor wire 5C and the filament 3 against vibration and impact. 6 can be attached to extend the life and improve the luminance.

  The automotive light bulb according to the present invention can be variously modified without being limited to the fourth embodiment.

  For example, in the fourth embodiment, the pair of anchor lines 5C and 5C are arranged on one side of the filament 3, but one anchor line 5C is arranged on one side of the light emitting unit 30 of the filament 3. The other anchor line 5 </ b> C may be arranged on the other side opposite to the light emitting unit 30 of the filament 3.

  In any of the first to fourth embodiments, the getter fixing portions 8, 8A, 8Aa, 8B are formed on the anchor lines 5, 5A-5C. The getter fixing portions 8 and 8B having a shape or a concave shape may be formed.

In the case of the first to fourth embodiments, the getter fixing portions 8 and 8B are formed by bending the anchor wires 5 and 5A to 5C, and the getter 6 is attached to the getter fixing portions 8 and 8B. However, since the getter 6 is a lump of a porous body obtained by heating and drying a mixed liquid in which an alumina ceramic bond and zirconium powder are uniformly mixed, the getter 6 has a strong fixing force and maintains the fixed position. it can. Therefore, the getter 6 may be fixed to the parallel line-shaped opposite portions (getter fixing portions) of the plurality of anchor lines 5.
(Example)
Next, examples will be described. A commercially available clear sphere, a commercially available blue sphere, and a prototype blue sphere in which a pair of anchor wires to which a filament having the diameter and number of turns shown in the following table and a getter are fixed are arranged inside a glass bulb. (Automobile light bulb of the present invention) and a prototype clear bulb are prepared.

  Each bulb has a specification of 12V5W, the filament diameter of a commercially available clear sphere is 4.0 MG, the number of turns is 78 turns, and the coil length (CL) is 6.8 mm. On the other hand, the filament diameter of the prototype blue sphere and the prototype clear sphere is 3.5 MG, the number of turns is 52, and the coil length (CL) is 5.4 mm.

Then, an AC power supply was supplied to each bulb to light it, and the luminous flux was measured. The results are shown in Table 1 below.

  As shown in Table 1, the prototype blue sphere is a commercially available clear sphere even if the filament diameter is made thinner than the commercially available clear sphere, the number of turns is reduced, and the coil length (CL) is shortened. Was obtained. That is, the brightness of the prototype blue sphere is improved.

  In the continuous lighting test, the commercially available blue sphere was 440 hours, whereas the prototype blue sphere could be lit for 800 to 1000 hours. That is, it is considered that the life of the prototype blue sphere is extended.

  The automobile light bulb according to the present invention can be installed with a getter more than double (6 times or more) than the current amount, so that the life can be extended, and a license lamp (number plate lamp), clearance lamp (position lamp) / Vehicle width light), room lamp, etc.

DESCRIPTION OF SYMBOLS 1 Car bulb 2 Glass bulb 3 Filament 4 Lead wire 5, 5A-5C Anchor wire 6 Getter 8, 8A, 8Aa, 8B Getter fixed part 80, 80A, 80Aa, 80B Opposite part

Claims (7)

A glass bulb, a filament disposed in the glass bulb, a pair of lead wires introduced into the glass bulb and supporting both side portions of the filament, and disposed between the pair of lead wires. In an automotive light bulb comprising an anchor wire that suppresses swinging, and a getter attached to at least one of the anchor wire and the introduction wire,
At least one of the anchor line and the introduction line includes a getter fixing portion having a facing portion formed by being bent in the vicinity of the filament,
The automotive light bulb characterized in that the getter is mounted across a portion facing the getter fixing portion. The automotive light bulb according to claim 1, wherein the facing portion of the getter fixing portion is a portion formed in a wave shape, a concave shape, or a parallel line shape. A glass bulb, a filament disposed in the glass bulb, a pair of lead wires introduced into the glass bulb and supporting both sides of the filament, and one or a plurality of lead wires are disposed between the pair of lead wires. In the vicinity of the filament of an automotive light bulb comprising an anchor line that suppresses swinging of the filament and a getter attached to at least one of the anchor line and the introduction line, the anchor line and the introduction line A light bulb for an automobile comprising a getter fixing part having an opposing part on at least one of the getters, wherein the getter is mounted across the opposing part of the getter fixing part. The automotive bulb according to any one of claims 1 to 3, wherein the glass bulb is blue glass. 5. The getter is formed to be porous by applying a mixed liquid in which an alumina ceramic bond and zirconium powder are uniformly mixed to the getter fixing portion and drying by heating. The automobile light bulb according to any one of the above. The anchor line includes a rising portion that is raised at a position facing the light emitting portion of the filament, and an extending portion that is bent and extended downward from the upper end portion of the rising portion to the light emitting portion of the filament. 6. The getter fixing portion is formed at the upper end portion of the rising portion, and the getter fixing portion is formed at the upper end portion of the rising portion. The automobile light bulb according to claim 1. The two support portions of the filament are bent so that they are curved outward and intersect the tip portion of the introduction line from the outside to the inside, or from the inside to the tip portion of the introduction line. The light bulb for an automobile according to any one of claims 1 to 6, wherein the light bulb intersects toward the outside.