JP6613085B2 - Packing for lighting equipment - Google Patents

Description

  The present invention relates to a packing used in a lighting fixture including a main body provided with a light source and a cover that can be attached to and detached from the main body, and disposed in a gap between a connection portion of the main body and the cover.

  2. Description of the Related Art Conventionally, household lighting fixtures include a main body provided with a light source and a cover that covers the main body, and the cover can be attached to and detached from the main body for the purpose of replacing the light source (light bulb). As such a lighting fixture, there is a ceiling light attached to a ceiling.

  The cover that can be attached to and detached from the main body usually generates a gap at the connection between the main body and the cover. From this gap, insects attracted by the light of the light source may enter the inside of the cover, and the appearance of the instrument may deteriorate.

  As a method for solving this problem, a packing using a flexible polyurethane foam (Patent Document 1) has been proposed.

JP 2009-110839 A

  However, in the packing using a flexible polyurethane foam, since the inside of the lighting fixture is hermetically sealed, heat generated from the light source tends to accumulate inside the lighting fixture. Here, when the light source is repeatedly turned on and off, the temperature inside the lighting fixture fluctuates, and the air inside the lighting fixture repeatedly expands and contracts. As a result, pressure acts on the contact portion between the packing and the main body of the lighting fixture, or the contact portion between the packing and the cover, thereby creating a gap. In addition, if heat remains in the interior of the lighting fixture, the heat may cause a malfunction of the lighting fixture.

  The present invention has been made to solve the above-described problems, and prevents insects from entering the interior of the lighting apparatus and easily releases heat generated inside the lighting apparatus to the outside of the lighting apparatus. It aims at providing packing for lighting fixtures.

  The gist of the present invention is as follows.

[1] A packing that is used for a lighting device having a main body portion to which a light source is attached and a cover that covers the light source and is detachable from the main body portion, and is disposed at a connection portion between the main body portion and the cover,
The packing is a woven or knitted fabric having air permeability .
[2] the packing, the packing according to the plurality of weft yarns which are arranged at regular intervals, a plurality of warp yarns, characterized in that a fabric mat weave structure confounding [1].
[ 3 ] The packing according to [ 1 ] or [ 2 ], wherein in the packing , an insect repellent is contained in a thread disposed along a connecting portion of the main body portion and the cover.
[ 4 ] The packing is a woven fabric having a mesh number of 5 or more and 500 or less, and the diameter of the yarn constituting the woven fabric is 10 μm or more and 1000 μm or less. [ 1 ] to [ 3 ] The packing according to any one of the above .

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the packing for lighting fixtures which prevents an insect from invading inside a lighting fixture and is easy to discharge | release the heat which generate | occur | produced inside the lighting fixture to the exterior of a lighting fixture.

It is the schematic of the lighting fixture of embodiment. In the lighting fixture of embodiment, it is a cross-sectional enlarged view which shows the connection part of a main-body part and a cover. In the lighting fixture of another embodiment, it is a cross-sectional enlarged view which shows the connection part of a main-body part and a cover. It is a front view which shows the outline | summary of the fiber structure which has a flat tatami woven structure. It is sectional drawing (AA sectional drawing of FIG. 4) which shows the outline | summary of the fiber structure which has a flat woven structure. It is sectional drawing (BB sectional drawing of FIG. 4) which shows the outline | summary of the fiber structure which has a flat woven structure.

  Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

  The present embodiment relates to a lighting fixture attached to the ceiling as an example of the lighting fixture. As shown in FIG. 1, the lighting fixture of this embodiment includes a main body 1 attached to the ceiling 10 and a light source attached to the main body 1. (Light bulb) 2 and cover 3 are provided. The cover 3 is attached to the main body 1 in order to protect the main body 1 and the light source 2 and further transmits light from the light source 2.

  FIG. 2 is an enlarged cross-sectional view showing a connection portion between the main body 1 and the cover 3 in the lighting fixture of the present embodiment. The main body 1 has a flange portion 1a that protrudes downward in FIG. 2, and the cover 3 has a flange portion 3a that protrudes upward in FIG. And the outer surface of the flange part 3 is attached to the inner surface of the flange part 1a. In addition, as shown in FIG. 3, you may make it attach the inner surface of the flange part 3a to the outer surface of the flange part 1a.

  When the cover 3 can be attached to and detached from the main body 1, a gap is formed in the connection portion between the main body 1 and the cover 3, and insects drawn to the light of the light source 2 from the gap are surrounded by the cover 3 and the main body 1. Enters the space (the space where the light source 2 is disposed). Therefore, in this embodiment, the packing 4 is arrange | positioned in the clearance gap formed in the connection part of the main-body part 1 and the cover 3. FIG. By disposing the packing 4, it is possible to fill a gap formed in the connecting portion between the main body 1 and the cover 3, and it is possible to prevent insects from entering the inside of the lighting fixture through this gap.

  The packing 4 is a porous body and has air permeability. Specifically, a woven fabric, a knitted fabric, a nonwoven fabric, a porous sheet, etc. are mentioned as a porous body. By providing the packing 4 with air permeability, when the cover 3 is attached to the main body 1, the air existing in the space (inside the lighting fixture) surrounded by the main body 1 and the cover 3 repeatedly expands and contracts. However, air can escape from the inside of the lighting fixture to the outside or the air can be taken into the inside from the outside of the lighting fixture via the packing 4. Specifically, when the air inside the lighting fixture expands due to heat generated by the light source 2, the air passes through the packing 4 and moves to the outside of the lighting fixture. On the other hand, when the light source 2 is turned off, the light source 2 does not generate heat and the air inside the lighting fixture contracts. At this time, the air existing outside the lighting fixture passes through the packing 4 and moves to the inside of the lighting fixture. Thus, the air pressure inside the lighting fixture can be adjusted by moving the air between the inside and the outside of the lighting fixture via the packing 4.

  As the packing 4, it is more preferable to use a fiber structure (a porous body formed of fibers) that is elastic in the thickness direction of the packing 4. The thickness direction of the packing 4 is a direction in which the packing 4 is sandwiched between the main body 1 and the cover 3. For example, examples of the fiber structure include a nonwoven fabric, a woven fabric, and a knitted fabric. Among these, a fabric is more preferable. Moreover, a fiber structure can be comprised by stacking a nonwoven fabric, a textile fabric, a knitted fabric, etc. The size of the gap formed at the connecting portion of the main body 1 and the cover 3 is not constant, and varies depending on the type of lighting fixture, and also varies depending on individual differences even if the lighting fixture is the same model. For this reason, by giving elasticity to the packing 4, the packing 4 can be fitted to the gap even if the gap is uneven in size.

  The yarn constituting the fiber structure of the packing 4 is not particularly limited, and fibers generated from various resins as raw materials, synthetic fibers, natural fibers such as cotton, hemp, silk, and carbon fibers can be used. .

  Specific examples of the yarn constituting the fiber structure include polyethylene resin, polypropylene resin, polystyrene resin, ABS resin, AS resin, EVA resin, polymethylpentene resin, polyvinyl chloride resin, polyvinylidene chloride resin, polymethyl acrylate Resin, polyvinyl acetate resin, polyamide resin, polyimide resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyacetal resin, polyarylate resin, polysulfone resin, polyvinylidene fluoride resin, ETFE (ethylene tetrafluoroethylene), PTFE ( polytetrafluoroethylene), polylactic acid resin, polyhydroxybutyrate resin, modified starch resin, polycaprolacto resin, polybutylene succinate resin, polybutylene adipate terephthalate Resins, polybutylene succinate terephthalate resins, polyethylene succinate resins and other biodegradable resins, phenol resins, urea resins, melamine resins, unsaturated polyester resins, diallyl phthalate resins, epoxy resins, epoxy acrylate resins, silicon resins, acrylics Fibers generated from urethane resins, thermosetting resins such as urethane resins, silicone resins, polystyrene elastomers, polyethylene elastomers, polypropylene elastomers, polyurethane elastomers, and other natural resins such as lacquer.

  The weaving structure of the fiber structure constituting the packing 4 is not particularly limited. However, when the fiber structure is viewed from a predetermined direction, the opening area can be reduced and the fiber structure can be viewed from a direction orthogonal to the predetermined direction. When viewed, a tatami woven structure that secures an opening area and has air permeability is preferable. As the tatami woven structure, there are a flat tatami woven structure, a twill woven structure, a reverse twill woven structure, and the like.

  FIG. 4 is a diagram schematically showing a fiber structure having a flat woven structure, and is a view when the fiber structure is viewed from a predetermined direction. FIG. 5 is a cross-sectional view at the AA position in the fiber structure of the flat woven structure of FIG. 4, and is a view when the fiber structure is viewed from a direction orthogonal to a predetermined direction. As shown in FIGS. 4 and 5, the fiber structure is constituted by warps 5 and wefts 6.

  The flat woven structure is a structure in which wefts 6 that are adjacent to each other in the longitudinal direction of the wefts 6 are closely entangled with the wefts 6 with respect to the wefts 6 arranged at regular intervals. And in a flat woven structure, when the fiber structure is observed from the front, the warps 5 are closely arranged, so that the opening area can be reduced. On the other hand, when the fiber structure is observed from the cross-sectional direction of the fiber structure (longitudinal direction of the weft 6), a gap S is formed around the weft 6 by the warp 5 and the weft 6, as shown in FIG. The air permeability can be ensured through the gap S. In the twill woven structure and the inverted twill woven structure, the way in which the warp 5 intersects with the weft 6 is different from the flat tatami weave structure. The point which can ensure air permeability through the formed gap S is common.

  In this embodiment, an insect repellent may be made harder to approach the packing 4 by adding an insect repellent to the yarn forming the fiber structure, thereby further improving the insect repellent effect. Here, when the yarn is melt-spun, it is sufficient that an insect repellent remains inside the yarn, and the form of the insect repellent when the yarn contains the insect repellent is not particularly limited, and can be appropriately selected by those skilled in the art.

  In the present embodiment, it is preferable to contain an insect repellent component as a liquid compound in the yarn. By using the insect repellent component of the liquid compound, it becomes possible to add the insect repellent component to the yarn in a stable state, and to easily adjust the diffusion rate of the insect repellent component inside the yarn.

  When using a liquid compound insect repellent component, for example, a microencapsulated insect repellent is contained inside the yarn, or a porous material is loaded with the insect repellent and this porous material is contained inside the yarn. Can do.

  In this embodiment, it is preferable that the microencapsulated insect repellent is contained in the yarn. The microencapsulated insect repellent is a microcapsule filled with an insect repellent component as a liquid compound. When the thermoplastic resin is melt-kneaded and spun, if the insect repellent component is simply contained in the yarn, the insect repellent component bleeds out to the outer surface of the yarn and evaporates to the outside of the yarn.

  As a result, tackiness (adhesiveness) is generated on the outer surface of the yarn, making it difficult to weave, and in order to compensate for the evaporation of the insect repellent component, more insect repellent components are required at the time of melt kneading. Or Further, if tackiness is likely to occur on the outer surface of the yarn, dust or the like is likely to adhere to the outer surface of the yarn. And the dust adhering to the outer surface of the yarn inhibits the release of insect repellent components to the outside of the yarn, and reduces the insect repellent effect.

  On the other hand, when an insect repellent made into microcapsules is used, the insect repellent component as a liquid compound is retained in the microcapsule during melt-kneading, so that the insect repellent component is less likely to bleed out to the outer surface of the yarn. Thereby, while being able to make it hard to generate | occur | produce tackiness, it can suppress that the insecticide component more than a required amount is used.

  In this embodiment, it is more preferable that the insect core is included in the core portion of the yarn having the core-sheath structure, and the sheath portion can be formed only from the resin. Thereby, since the insect repellent component contained in the core part passes through the sheath part and is released to the outer surface of the yarn, it becomes easy to adjust the amount of the insect repellent component released in the sheath part.

  In this embodiment, an insect repellent may be included in either the warp 5 or the weft 6, and an insect repellent may be included in both the warp 5 or the weft 6. Here, in order to ensure the strength of the yarn containing the insect repellent or to suppress the release rate of the insect repellent component, it is necessary to increase the yarn diameter. However, since it becomes difficult to increase the number of meshes when the yarn diameter is increased, it is better to include an insect repellent in either the warp 5 or the weft 6.

  When an insecticide is included in either the warp 5 or the weft 6, the packing 4 disposed at the connecting portion between the main body 1 and the cover 3 of the lighting apparatus is disposed along the circumferential direction of the flanges 1a and 3a. It is preferable to include an insect repellent in the yarn. As shown in FIG. 1, in the case of a lighting fixture attached to a ceiling portion, it is preferable to include an insect repellent in a thread arranged in a plane parallel to the wall surface of the ceiling 10 in the packing 4. By including an insect repellent in the yarns arranged along the circumferential direction of the flange portions 1a and 3a, it is possible to arrange the yarn containing the insect repellents all around the flange portions 1a and 3a, so that more insects invade. It becomes difficult to do. More preferably, an insecticide is included in the warp 5 and the packing 4 is attached so that the warp 5 is arranged along the circumferential direction of the flange portions 1a and 3a. Thereby, in the structure shown in FIG. 2 or 3, air enters and exits (breathability) using the gap S formed along the direction perpendicular to the wall surface of the ceiling 10 while ensuring the insect repellent effect by the insect repellent. Can be secured. When an insect repellent is included in the weft 6 and the packing 4 is attached so that the weft 6 is arranged along the circumferential direction of the flange portions 1a and 3a, as shown in FIG. This is because when the packing 4 is viewed from the direction perpendicular to the wall surface, the gap S apparently becomes zero, making it difficult for air to enter and exit.

  In the present embodiment, the number of meshes is not particularly limited as long as it is difficult for insects to invade, but is preferably 5 or more and 500 or less. By setting the number of meshes to 5 or more, it becomes possible to prevent many insects from entering. Further, if the number of meshes is larger than 500, weaving becomes difficult, and therefore the number of meshes is preferably 500 or less.

  In the present embodiment, the diameter of the yarn constituting the fiber structure is not particularly limited as long as the number of meshes that are difficult for insects to invade and the strength of the fiber structure can be secured, but preferably 10 μm or more and 1000 μm or less. When the yarn diameter is 10 μm or more, the packing 4 is not worn by the friction force when the cover 3 is attached to the main body 1 and the yarn is not broken. Moreover, when the yarn diameter is larger than 1000 μm, it is difficult to increase the number of meshes.

  The packing 4 in this embodiment may be attached in advance to the main body 1 of the lighting fixture or may be attached in advance to the cover 3. Considering the ease of replacement of the packing 4, it is preferable to attach the packing 4 to the cover 3 in advance. The attachment method of the packing 4 is not particularly limited, and may be attached by a known method. For example, you may attach by welding of the packing 4, and you may attach using an adhesive etc.

  Moreover, the packing 4 of this embodiment may contain the component for providing arbitrary functions as a functional material. The functional materials include titanium dioxide as a matting agent, calcium stearate as a lubricant, fine particles such as silica and alumina, hindered phenol derivatives as antioxidants, and colorants such as pigments, stabilizers and dispersants. In addition to such additive materials, there are functional materials such as ultraviolet shielding agents, near infrared shielding agents, antibacterial agents, antifungal agents, antistatic agents, flame retardants, weathering agents and various catalysts. In addition, this functional material should just be disperse | distributing to the fiber which comprises the packing 4, or should adhere to the outer surface of the packing 4. FIG.

  Since the packing for lighting equipment according to the present embodiment obtained as described above can prevent insects from entering, reducing the number of times the cover 3 is removed from the main body 1 and the cover 3 is cleaned. it can. Since the packing 4 of the fiber structure can be made thinner than a foam or the like, it can be used for various shapes of the cover 3, and can be used for lighting devices having various shapes such as a circular shape, a square shape, and other polygonal shapes. It is possible.

1: Main part of lighting fixture 2: Light source 3: Cover 4: Packing 5: Warp 6: Weft

Claims (4)

A main body part to which a light source is attached, and a packing that covers the light source and is used in a lighting fixture having a cover that can be attached to and detached from the main body part, and is disposed at a connection part between the main body part and the cover,
The packing is a woven or knitted fabric having air permeability. The packing is a packing according to claim 1, characterized in that a plurality of weft yarns which are arranged at regular intervals, a fabric mat woven structure in which a plurality of warp threads are entangled. The packing according to claim 1 or 2 , wherein an insect repellent is contained in the yarn arranged along the connecting portion of the main body and the cover. The packing is a woven fabric having a mesh number of 5 or more and 500 or less ,
The packing according to any one of claims 1 to 3 , wherein a diameter of the yarn constituting the woven fabric is 10 µm or more and 1000 µm or less .

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