JP4856228B2 - Light bulb covering body and light emitting body - Google Patents

Description

  The present invention relates to a light bulb covering body that covers a light emitting portion of an incandescent light bulb and a light emitter that is configured by covering a light emitting portion of an incandescent light bulb with a light bulb covering body.

  In recent years, as a direction indicator attached to an automobile, a light emitting body composed of an incandescent light bulb in which a light emitting portion is colored amber is arranged at the front of a reflector having a white color such as silver. Is formed by covering with a transparent front lens (clear lens). In the thus configured direction indicator, amber light is directly output from the light emitting unit when the light emitter is turned on, and this amber light is emitted to the outside through the front lens. Direction indication is performed by blinking.

Japanese Patent Application Laid-Open No. 2002-2372

  However, when the direction indicator is configured using the light emitting body in which the light emitting portion is colored in amber as described above, the light emitting portion exhibits an amber color even when the light emitting body is in a non-lighting state. If the luminous intensity of the light source is not increased, there is a problem that it may be difficult to identify whether the light emitter is in a lit state or a non-lighted state in a bright environment such as daytime.

  The present invention has been made in view of such circumstances, and a light bulb covering body capable of obtaining a light emitting body excellent in visual recognition performance for identifying whether it is in a lighting state or a non-lighting state, and light emission using this light bulb covering body The purpose is to provide a body.

In order to achieve the above object, the invention of claim 1 is an incandescent light bulb in which a predetermined chromatic color light used for a direction indicator of an automobile that gives a direction indication by blinking or a brake lamp of an automobile is output. A light bulb covering body covering a light emitting portion, having a color of a system different from the chromatic light output from the light emitting portion, and formed of a translucent elastic polymer material mixed with colorant particles It is characterized by comprising a cylindrical body.

  According to this configuration, the light-emitting body is configured by covering the light-emitting portion of the incandescent bulb with the light-bulb covering, and when the light-emitting portion is in a non-lighting state, the light-emitting portion apparently has a color that the light-bulb covering has The chromatic color light output from the light emitting unit has a different color system, and when it is in the lit state, the chromatic color light output from the light emitting unit is directly transmitted through the bulb cover and output to the outside. The That is, since the color of the light emitting unit is different between the lighting state and the non-lighting state, the visual recognition performance for identifying whether the light emitting portion is in the lighting state or the non-lighting state is improved.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the color of the cylindrical body is white.

  According to this configuration, when the light emitting portion is in the non-lighting state, the light emitting portion apparently has a white color of the bulb cover, and when in the lighting state, the chromatic light output from the light emitting portion is intact. It passes through the bulb cover and is output to the outside. That is, since the color of the light emitting unit is different between the lighting state and the non-lighting state, the visual recognition performance for identifying whether the light emitting portion is in the lighting state or the non-lighting state is improved.

  According to a third aspect of the present invention, in the first or second aspect, the cylindrical body is formed in a bottomed shape having an opening at one end.

  According to this configuration, the light-emitting cover of the incandescent light bulb is covered with the light-emitting portion by inserting the light-emitting portion of the incandescent bulb into the inside through the opening at one end of the cylindrical body, thereby easily configuring the light-emitting body.

  According to a fourth aspect of the invention, there is provided the method according to any one of the first to third aspects, wherein the cylindrical body has a plurality of protrusions for forming a gap between the inner peripheral surface and the light emitting part of the incandescent bulb. It is characterized by being formed.

  According to this configuration, when the light emitting body in which the light emitting section of the incandescent bulb is covered with the light bulb covering body is in the non-lighting state, the presence of the gap formed between the light bulb covering body and the light emitting section The color is less likely to be transmitted to the outside of the light bulb cover, and the light emitting part apparently approaches the color of the light bulb cover, and when it is in a lit state, the chromatic light output from the light emitting part remains as it is. It passes through the covering and is output to the outside. In other words, since the color of the light emitting unit is more clearly different between the lighting state and the non-lighting state, the visual recognition performance for identifying whether the light emitting portion is in the lighting state or the non-lighting state is further improved. It will be.

  In addition, due to the existence of a gap between the light bulb covering body and the light emitting portion formed when the light emitting portion of the incandescent light bulb is covered with the light bulb covering portion, high heat generated from the light emitting portion is not directly transmitted to the light bulb covering body. become. For this reason, fading due to high heat of the bulb covering body, deterioration of rubber elasticity and the like are suppressed.

  The invention according to claim 5 is the one according to any one of claims 1 to 4, wherein the cylindrical body is formed so as to be covered with the light emitting portion of the incandescent bulb in a pressure contact state. It is characterized by.

  According to this configuration, it is possible to elastically hold the light bulb covering body on the light emitting portion of the incandescent light bulb, and the light emitting portion can be elastically held on the light emitting portion.

  According to a sixth aspect of the present invention, there is provided a light emitting body in which light of a predetermined chromatic color is output from a light emitting portion of an incandescent light bulb used for a direction indicator of an automobile that performs direction indication by blinking or a brake lamp of an automobile. Then, the light emitting part is configured by covering the light bulb covering body according to any one of claims 1 to 5.

  According to this configuration, when in the non-lighting state, the light emitting portion apparently has the color of the bulb cover, and has a color of a system different from the chromatic light output from the light emitting portion, When in the lit state, the chromatic light output from the light emitting section is transmitted through the bulb cover as it is and output to the outside. For this reason, the visual recognition performance which identifies whether it exists in a lighting state or a non-lighting state will be improved.

  In particular, when the light emitter is configured by covering a light bulb covering body with a plurality of protrusions for forming a gap between the light emitting portion of the incandescent bulb on the inner peripheral surface of the tubular body, When the light emitter is in a non-lighting state, the presence of a gap formed between the light bulb covering body and the light emitting portion makes it difficult for the color of the light emitting portion to be transmitted to the outside of the light bulb covering body, and the light emitting portion apparently appears. It will be closer to the color of the bulb cover. For this reason, since the color of the light emitting unit is more clearly different between when it is in the lit state and when it is in the non-lighted state, the visual recognition performance for identifying whether it is in the lit state or in the non-lighted state is further improved. Will be.

  The invention according to claim 7 is the invention according to claim 6, wherein the incandescent light bulb is characterized in that a glass covering constituting a light emitting portion is colored in a predetermined chromatic color.

  According to this configuration, when in the non-lighting state, the light emitting portion apparently has the color of the bulb cover, and has a color of a system different from the chromatic light output from the light emitting portion, When in the lighting state, chromatic light is transmitted from the colored light-emitting section through the bulb cover and output to the outside.

  The incandescent lamp according to an eighth aspect of the invention relates to the sixth aspect of the invention, wherein the incandescent bulb is covered with a cylindrical colored body formed of a translucent elastic polymer material having a predetermined chromatic color on the light emitting portion. It is characterized by

  According to this configuration, when in the non-lighting state, the light emitting portion apparently has the color of the bulb cover, and has a color of a system different from the chromatic light output from the light emitting portion, When in the lighting state, chromatic light is transmitted from the light-emitting portion covered with the colored body to the outside through the light bulb covering body.

  According to the first aspect of the present invention, the light bulb covering body is composed of a cylindrical body formed of a translucent elastic polymer material having a color of a system different from the chromatic light output from the light emitting portion. Therefore, by covering this light bulb covering body with a light emitting part of an incandescent light bulb that is designed to output light of a predetermined chromatic color, light emission excellent in visual performance for identifying whether it is in a lighting state or in a non-lighting state You can get a body. Therefore, by covering the light bulb covering body on the light emitting part of the incandescent light bulb constituting the vehicle direction indicator or the brake lamp of the vehicle, the direction indicator of the vehicle or the brake lamp of the vehicle which gives the direction indication by blinking. A suitable light emitter can be obtained.

  Further, according to the invention of claim 2, since the cylindrical body constituting the light bulb covering body has a white color, the incandescent light bulb in which light having a predetermined chromatic color is output from the light bulb covering body. By covering the light emitting portion, it is possible to obtain a light emitting body excellent in visual recognition performance for identifying whether it is in a lighting state or a non-lighting state.

  According to the invention of claim 3, since the cylindrical body is formed in a bottomed shape having an opening at one end, the light emitting portion of the incandescent bulb is inserted into the inside from the opening at one end of the cylindrical body. By inserting, the light emitter can be easily configured.

  According to the invention of claim 4, since the plurality of protrusions for forming a gap between the light emitting part of the incandescent bulb are formed on the inner peripheral surface of the cylindrical body, It is possible to further improve the visual recognition performance for identifying whether it is in a lighting state, and the heat generated from the light emitting part is not directly transmitted to the light bulb covering body due to the gap formed between the light bulb covering body and the light emitting part. Thus, characteristic changes such as fading of the bulb covering and deterioration of rubber elasticity can be suppressed.

  According to the invention of claim 5, since the cylindrical body is formed so as to be covered with the light emitting portion of the incandescent bulb in a pressure contact state, it is only necessary to cover the light emitting portion with the light bulb covering portion. The covering operation can be easily performed.

  According to a sixth aspect of the present invention, a light emitting body of an incandescent light bulb that is configured to output light of a predetermined chromatic color is coated with the light bulb covering body according to any one of the first to fifth aspects. Therefore, it is possible to obtain a light emitter excellent in visual recognition performance for identifying whether it is in a lighting state or a non-lighting state. For this reason, it becomes a thing suitable for the direction indicator of the motor vehicle which gives a direction instruction by blinking, or the brake lamp of a motor vehicle. In particular, when a plurality of protrusions are formed on the inner peripheral surface of the cylindrical body to form a gap with the light emitting part of the incandescent bulb, it is identified whether it is in a lighting state or a non-lighting state Visual performance can be further improved, and changes in characteristics such as fading of the bulb cover and deterioration of rubber elasticity can be suppressed.

  According to the invention of claim 7, since the incandescent light bulb is formed by coloring the glass covering constituting the light emitting portion into a predetermined chromatic color, the incandescent light bulb configured to output chromatic light. Can be easily obtained.

  According to the invention of claim 8, the incandescent bulb is formed by covering the light emitting portion with a cylindrical colored body formed of a translucent elastic polymer material having a predetermined chromatic color. It is possible to easily obtain an incandescent light bulb that can output chromatic color light.

It is a perspective view of the light-emitting body to which the light bulb covering body which concerns on one Embodiment of this invention was applied. It is a disassembled perspective view of the light-emitting body shown in FIG. It is a partially cutaway perspective view of the light bulb covering body shown in FIG. It is a perspective view of the light-emitting body to which the light bulb covering body which concerns on other embodiment of this invention was applied. It is a disassembled perspective view of the light-emitting body shown in FIG. It is a figure which shows the modification of the incandescent lamp shown in FIG.

  FIG. 1 is a perspective view of a light emitter to which a light bulb covering body according to an embodiment of the present invention is applied, and FIG. 2 is an exploded perspective view thereof. In these drawings, a light emitter 10 is a bulb made of a spherical incandescent bulb 12 that outputs amber light and a translucent silicone rubber coated on the light emitting portion of the incandescent bulb 12. The cover 14 is comprised.

  The incandescent lamp 12 includes a light emitting unit 124 having a circular cross section and a light emitting unit 124 having a circular cross section in which a filament 123 supported by a pair of filament supports 121 and 122 is covered with a glass covering colored amber. And an electrode part 125 formed by pulling out the ends of the filament supports 121 and 122 on a glass substrate formed integrally with one end of the glass cover. In addition, an inert gas such as argon gas for preventing the filament 123 from burning is sealed inside the glass cover constituting the light emitting unit 124.

  The light bulb covering body 14 is composed of a cylindrical body 143 having a circular cross section having an opening 141 at one end and a bottom 142 at the other end, and is a translucent silicone rubber having a white color. It is formed by. On the inner peripheral surface of the cylindrical body 143, as shown in detail in the cutaway view of FIG. 3, a plurality (eight in the present embodiment) of linear projections 144 are opened at predetermined intervals in the axial direction. A hemispherical protrusion 145 is formed at the center on the inner bottom surface. The radial dimension of the circular space surrounded by the linear protrusion 144 on the inner peripheral surface is set to be a value slightly smaller than the outer diameter dimension of the light emitting portion 124 of the incandescent bulb 12.

  The bulb covering body 14 configured in this way is slightly inserted into the outer peripheral surface of the light emitting portion 124 by the linear protrusion 144 when the light emitting portion 124 of the incandescent bulb 12 is inserted into the cylindrical body 143 through the opening 141. It is covered and held in the pressed state. In this state, a gap is formed by the linear protrusion 144 and the hemispherical protrusion 145 between the inner peripheral surface of the bulb cover 14 and the outer peripheral surface of the light emitting unit 124.

  For this reason, when the incandescent light bulb 12 is in a non-lighting state, the amber color of the light emitting portion 124 is not easily transmitted to the outside of the light bulb covering 14, and the light emitting portion 124 apparently appears. When the incandescent light bulb 12 is in the lighting state, the chromatic color light output from the light emitting unit 124 passes through the light bulb cover 14 and is output to the outside. That is, light is emitted when the incandescent light bulb 12 is in a lit state and in a non-lighted state, compared to the case where no gap is formed between the inner peripheral surface of the bulb covering 14 and the outer peripheral surface of the light emitting portion 124. Since the colors of the portion 124 are clearly different, the visual recognition performance for identifying whether the light is in the lighting state or the non-lighting state is further improved.

  In addition, since a gap is formed between the bulb cover 14 and the light emitting portion 124, high-temperature generated heat from the light emitting portion 124 when the incandescent bulb 12 is in a lighting state is directly transmitted to the bulb cover 14. As a result, changes in characteristics such as fading of the bulb cover 14 and deterioration of rubber elasticity are suppressed, and the life of the bulb cover 14 can be extended. Further, when there is no gap between the light emitting unit 124 and the bulb cover 14, an air layer that is confined between the light emitting unit 124 and the bulb cover 14 is generated from the light emitting unit 124. Although it expands due to heat and the light bulb covering body 14 is easily detached from the light emitting section 124, when a gap is formed between the light emitting section 124 and the light bulb covering body 14, a confined air layer is formed. Since it does not exist, such a fear does not arise.

  The bulb covering body 14 configured in this way is blended with various compounding chemicals such as a vulcanizing agent and an anti-aging agent in a silicone rubber which is a molding raw material having translucency such as transparent or translucent, A molding material mixed with a white colorant such as silver and then kneaded or kneaded to have plasticity is compression-molded with a female mold and a male mold, and heated in this compression-molded state. It can be obtained by curing. In addition, when the silicone rubber which is a molding raw material is in a white translucent state from the beginning, it is not always necessary to mix a colorant.

  FIG. 4 is a perspective view of a light emitter to which a light bulb covering body according to another embodiment of the present invention is applied, and FIG. 5 is an exploded perspective view thereof. In these drawings, a light emitter 30 is a light bulb made of a cylindrical incandescent light bulb 32 that outputs amber light, and a translucent silicone rubber that is covered by the light emitting portion of the incandescent light bulb 32. The cover 34 is comprised.

  The incandescent light bulb 32 includes a cylindrical light emitting portion 324 having a circular cross section in which a filament 323 supported by a pair of filament supports 321 and 322 is covered with a glass covering colored amber, and a longitudinal direction of the light emitting portion 324. A pair of electrode portions 325 and 326 formed at both ends in the direction and connected to the respective ends of the filament supports 321 and 322 are provided.

  The light bulb covering body 34 is composed of a cylindrical body 343 having a circular cross section having openings 341 and 342 at both ends, and is made of translucent silicone rubber having a white color. A plurality of (six in this embodiment) linear protrusions 344 are formed across the openings 341 and 342 at both ends on the inner peripheral surface of the cylindrical body 343 at predetermined intervals in the axial direction. . Note that the radial dimension of the circular space surrounded by the linear protrusions 344 on the inner peripheral surface is set to be slightly smaller than the outer diameter dimension of the light emitting unit 324 of the incandescent lamp 32.

  The light bulb covering body 34 configured in this way has the light emitting portion 324 of the incandescent light bulb 32 inserted into one of the openings 341 (or the opening 342) of the cylindrical body 343 so that the light emitting portion 324 is connected to the outer peripheral surface of the light emitting portion 324. It is covered and held in a state where it is slightly pressed by the projection 344 having a shape. As a result, a gap is formed between the light bulb cover 34 and the light emitting portion 324, and the visual performance is improved as in the case of the light bulb cover 14, while fading of the light bulb cover 34 and deterioration of rubber elasticity are achieved. Therefore, the life of the bulb covering 34 can be extended. Further, similarly to the case of the bulb cover 14 described above, there is no possibility that the bulb cover 34 is easily detached from the light emitting unit 324.

  The light bulb cover 34 configured in this way is obtained by compression molding with a female mold and a male mold using the same molding material as that of the light bulb cover 14 and then heat-curing. Can do.

  Since the light bulb covering bodies 14 and 34 according to the embodiment of the present invention are composed of the cylindrical bodies 143 and 343 formed of a translucent elastic polymer material having a white color as described above, The light-emitting bodies 10 and 30 are configured by covering the light-bulb coverings 14 and 34 with the light-emitting portions 124 and 324 of the incandescent light bulbs 12 and 32 that are configured to output chromatic light. When it is in a non-lighting state, it has a white color, and when it is in a lighting state, amber light output from the light emitting units 124 and 324 is transmitted through the light bulb coverings 14 and 34 and output to the outside. become. Accordingly, since the colors of the light emitting units 124 and 324 are different between when the light emitters 10 and 30 are in the lighting state and when they are in the non-lighting state, it is identified whether they are in the lighting state or the non-lighting state. The visual performance to perform will be improved.

  In addition, the light emitters 10 and 30 according to the embodiment of the present invention include a light bulb covering body 14 formed of a translucent elastic polymer material having a white color on the light emitting portions 124 and 324 of the incandescent light bulbs 12 and 32. 34, the light-emitting bodies 10 and 30 have a white color when in the non-lighting state, and amber light output from the light-emitting portions 124 and 324 when in the lighting state. Is transmitted through the bulb coverings 14 and 34 and output to the outside. Accordingly, since the colors of the light emitting units 124 and 324 are different between when the light emitters 10 and 30 are in the lighting state and when they are in the non-lighting state, it is identified whether they are in the lighting state or the non-lighting state. The visual performance to perform will be improved.

  Further, the light emitters 10 and 30 configured as described above are disposed in the front part of a reflector having a white color such as silver, and the light emitters 10 and 30 are covered with a transparent front lens so as to indicate a direction indicator. When the light emitters 10 and 30 are in a non-lighting state, the light emitting units 124 and 324 exhibiting white color are less visible from the outside due to the presence of the front lens. In some cases, the amber light output from the light emitting units 124 and 324 passes through the front lens and is emitted to the outside. As a result, the light emitting units 124 and 324 can be clearly seen from the outside.

  When the turn indicator is configured using the light emitters 10 and 30 in this manner, the visual recognition state of the light emitting units 124 and 324 varies greatly between the lighting state and the non-lighting state. Even if the luminous intensity of 30 is not increased more than necessary, the viewing performance can be excellent even in a bright environment such as daytime, and the direction indication is reliably performed by the blinking of the colored light. Further, when the light emitters 10 and 30 are in a non-lighting state, the light emitting portions 124 and 324 are difficult to see from the outside of the front lens, so that the vehicle design can be made different from the conventional one.

  The light bulb covering body and the light emitting body according to the present invention are not limited to those of the above embodiment, and various modifications as described below can be adopted.

  (1) In the above-described embodiment, the incandescent bulbs 12 and 32 have the light emitting portions 124 and 324 formed of the glass cover colored in amber color, but may be colored in a chromatic color other than the amber color. It is. Further, as shown in FIG. 6, the light emitting portion 124 of the incandescent bulb 12 is formed at one end formed of an elastic polymer material such as translucent silicone rubber colored in a chromatic color such as amber on a transparent glass cover. You may make it comprise by covering the bottomed cylindrical colored body 36 which has opening. When the light emitting unit 124 is configured by covering the colored body 36 in this manner, an incandescent bulb that emits light in various chromatic colors can be easily configured by replacing the colored body 36. Note that the incandescent lamp 32 may also be configured by covering the light emitting portion 324 with a cylindrical colored body having openings at both ends formed of the same elastic polymer material.

  (2) In the above embodiment, the light bulb coverings 14 and 34 have a white color, but may have a color other than a white color such as a light pink color or a light blue color. . That is, it is possible to have a color of a system different from the chromatic light output from the light emitting units 124 and 324 of the incandescent bulbs 12 and 32. In this case, when the incandescent light bulbs 12 and 32 are in a non-lighting state, the light emitting portions 124 and 324 apparently have colors such as pink and blue colors of the light bulb coverings 14 and 34. When 12 and 32 are in a lighting state, the amber light output from the light emitting units 124 and 324 is transmitted through the bulb coverings 14 and 34 and output to the outside. Accordingly, since the colors of the light emitting units 124 and 324 are different between the lighting state and the non-lighting state, the lighting state is the same as the case where the light bulb coverings 14 and 34 have white colors. The visual recognition performance for identifying whether it is in a non-lighting state or not is improved.

  It should be noted that the colorant particles mixed with the silicone rubber are coarsened so that the influence of the color of the bulb coverings 14 and 34 on the chromatic light output from the light emitting units 124 and 324 is substantially eliminated. And the effect can be reduced. Further, the design of the automobile can be improved by making the colors of the light bulb coverings 14 and 34, for example, the same as the colors of the vehicle body, or by making the colors of the light bulb covers 14 and 34 have a specific relationship with the color of the vehicle body. It becomes possible.

  (3) In the above embodiment, the linear protrusion 144 and the hemispherical protrusion 145 are formed on the inner peripheral surface of the tubular body 143 constituting the light bulb covering body 14, and the tubular body 343 constituting the light bulb covering body 34. A linear protrusion 344 is formed on the inner peripheral surface of the light bulb. However, the light bulb coverings 14 and 34 are made light emitting portions 124 and 324 of the incandescent light bulbs 12 and 32 by increasing the thickness of the light bulb coverings 14 and 34, for example. Even when the light-emitting parts 124 and 324 in the non-lighting state are not easily transmitted even when they are covered in close contact with each other, or the light-bulb coverings 14 and 34 are light-emitting parts 124 and 324 of the incandescent light bulbs 12 and 32. The projections 144, 145, 344 are not necessarily required when the air layer confined between the two layers is covered so as not to exist.

  In addition, when the linear protrusion 144 and the hemispherical protrusion 145 are formed on the inner peripheral surface of the tubular body 143 constituting the light bulb covering body 14 so that a gap is formed between the light emitting portion 124, When the linear protrusion 344 is formed on the inner peripheral surface of the tubular body 343 constituting the light bulb covering body 34 so that a gap is formed between the light emitting section 324, the light emitting section 124, As described above, various excellent effects can be obtained due to the presence of the gap formed between the H.P.

  (4) In the above embodiment, the light emitting portions 124 and 324 of the incandescent bulbs 12 and 32 are formed in a circular cross section, and the bulb cover bodies 14 and 34 are formed in a cylindrical shape corresponding to this. Since the light emitting portions 124 and 324 of the incandescent bulbs 12 and 32 are not limited to those having a circular cross section, the shape of the bulb coverings 14 and 34 can be changed in accordance with the shape of the light emitting portions 124 and 324. it can.

  (5) In the above embodiment, the light bulb coverings 14 and 34 are made of silicone rubber, but are not limited to silicone rubber, and other synthetic rubbers such as fluoro rubber and EDPM (ethylene propylene rubber) or natural rubber are used. It is also possible. In short, any material made of an elastic polymer material having predetermined heat resistance can be used.

  (6) In the above embodiment, the light emitters 10 and 30 formed by covering the light emitting portions 124 and 324 of the incandescent light bulbs 12 and 32 with the light bulb coverings 14 and 34 are used as lamps (turn signals) constituting a turn indicator of an automobile. However, it can also be used as a lamp for other purposes such as a brake lamp or a lamp used for other than the automobile. When the light emitters 10 and 30 are used as brake lamps, the light emitters 124 and 324 may be colored, for example, red.

DESCRIPTION OF SYMBOLS 10,30 Light-emitting body 12,32 Incandescent light bulb 14,34 Light bulb covering body 36 Colored body 124,324 Light emission part 144,344 Linear protrusion 145 Semispherical protrusion

Claims (8)

A light bulb covering that covers a light emitting part of an incandescent light bulb that emits light of a predetermined chromatic color that is used for a direction indicator of an automobile that performs direction indication by flashing or a brake lamp of an automobile, the light emission A light bulb covering body comprising a cylindrical body made of a light-transmitting elastic polymer material having a color of a system different from the chromatic light output from the section and mixed with colorant particles .   The light bulb covering body according to claim 1, wherein a color of the cylindrical body is white.   3. The light bulb covering body according to claim 1, wherein the tubular body is formed in a bottomed shape having an opening at one end.   4. The cylindrical body according to any one of claims 1 to 3, wherein a plurality of protrusions for forming a gap between the inner peripheral surface and the light emitting portion of the incandescent bulb are formed. The bulb covering described.   The bulb covering body according to any one of claims 1 to 4, wherein the tubular body is formed so as to be covered with a light emitting portion of an incandescent bulb in a pressure contact state.   A light emitter that emits light of a predetermined chromatic color from a light emitting part of an incandescent light bulb used for a direction indicator of an automobile that performs direction indication by flashing or a brake lamp of an automobile, and claims the light emitting part Item 6. A light emitting body comprising the light bulb covering body according to any one of Items 1 to 5.   The light-emitting body according to claim 6, wherein the incandescent light bulb is formed by coloring a glass covering that forms a light-emitting portion into a predetermined chromatic color.   The light-emitting body according to claim 6, wherein the incandescent lamp is formed by covering a light-emitting portion with a cylindrical colored body formed of a translucent elastic polymer material having a predetermined chromatic color. .

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