Seal member and lighting device

Abstract

To provide a seal member that can improve adhesion and waterproofness.SOLUTION: A seal member 10 includes: an annular base part 11; and one or more annular projection parts 12 formed on at least one surface of a first abutment surface 111 and a second abutment surface 112 of the annular base part 11. The first abutment surface 111 is a surface abutting on a first member, while the second abutment surface 112 is a surface abutting on a second member. The annular projection parts 12 are formed so as to surround an opening 113 of the annular base part 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sealing member and a lighting device. [Background technology]

[0002] Patent document 1 discloses a gasket in which the outer periphery of a first abutment portion that abuts against the socket body and a second abutment portion that abuts against the tightening cover are each formed with an outwardly convex curved surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-37764 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in order to prevent liquid from entering from the outside, the sealing member is required to have higher adhesion and waterproofing properties, which is not limited to lighting devices, but is the same in various devices.

[0005] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, an object of the present invention is to provide a sealing member capable of improving adhesion and waterproofing, and a lighting device using the same.

[0006] In order to achieve the above object, the sealing member of the present invention comprises: An annular base portion; one or more annular protrusions formed on at least one of the first contact surface and the second contact surface of the annular base portion, The first contact surface is a surface that contacts a first member, The second contact surface is a surface that contacts a second member, The annular protrusion is a seal member formed so as to surround the opening of the annular base portion.

[0007] The lighting device of the present invention comprises: An apparatus including the seal member of the present invention. Effect of the Invention

[0008] According to the present invention, it is possible to provide a sealing member capable of further improving adhesion and waterproofing, and a lighting device using the same. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing an example of the configuration of the seal member in the first embodiment. [Diagram 2] FIG. 2 is a schematic diagram showing another example of the configuration of the seal member in the first embodiment. [Diagram 3] FIG. 3 is a schematic diagram showing another example of the configuration of the seal member shown in FIG. [Figure 4] FIG. 4 is a schematic diagram showing an example of the configuration of an illumination device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Next, an embodiment of the present invention will be described with reference to the drawings. The present invention is not limited or restricted by the following embodiment. In the following drawings, the same parts are given the same reference numerals. The explanations in each embodiment can be mutually applied. Furthermore, the configurations of each embodiment can be combined unless otherwise specified. In addition, in the drawings, for convenience of explanation, the structure of each part is appropriately simplified, and the dimensional ratio of each part may be shown schematically, different from the actual one.

[0011] [Embodiment 1] FIG. 1 is a schematic diagram showing an example of the configuration of the seal member 10 in this embodiment. FIG. 1(A) is a front view seen from the surface on which the annular convex portion 12 is formed in the annular base portion 11, and FIG. 1(B) is a side view seen from the cross section A'-A' of FIG. 1(A). As shown in FIG. 1, the seal member 10 of this embodiment includes the annular base portion 11 and the annular convex portion 12. FIG. 1 shows an example in which the annular convex portion 12 is formed only on one surface of the annular base portion 11, but this is an example and is not limited to this, as described later. The seal member 10 may further include, for example, a linear convex portion 13 as an arbitrary configuration, as described later. Note that, unless otherwise specified, the shape, size, number, arrangement position, etc. of each part of the seal member 10 shown in FIG. 1 are only examples and can be changed arbitrarily.

[0012] The seal member 10 is disposed between a first member and a second member, and seals the gap between the first member and the second member. The seal member 10 is also called, for example, a packing or a gasket.

[0013] The use of the seal member 10 is not particularly limited, and it is applied, for example, to seal between members of various devices such as a lighting device.

[0014] The first member and the second member are not particularly limited. When the seal member 10 is a seal member used in a lighting device, for example, the first member may be a cover and the second member may be a main body. Conversely, the first member may be a main body and the second member may be a cover. The main body and the cover will be described later as a main body 21 and a cover 22 in the lighting device 20 according to the second embodiment.

[0015] The annular base portion 11 has a first contact surface 111 that contacts the first member, a second contact surface 112 that contacts the second member, and an opening 113. The annular base portion 11 may be provided with, for example, an engagement hole (not shown) that engages the first member, the second member, and the seal member 10.

[0016] The outer diameter X, inner diameter Y, and height Z1 of the annular base portion 11 can be designed appropriately based on the device to which the seal member 10 is applied, in particular, the sizes of the first member and the second member.

[0017] The number of the engagement holes may be one or more. The engagement holes are arranged, for example, on the annular base portion 11 at a position that does not overlap with the annular convex portion 12 and the linear convex portion 13 described later. In addition, a convex portion for engagement holes may be provided around the engagement holes, for example, so as to surround the engagement holes. A part of the convex portion for engagement holes may also serve as a part of the annular convex portion 12 and / or the linear convex portion 13 described later. In addition, the convex portion for engagement holes may be arranged in contact with the annular convex portion 12 and / or the linear convex portion 13 described later. The convex portion for engagement holes can achieve high adhesion and high waterproofing even when the engagement holes are present.

[0018] The annular protrusion 12 is formed on at least one of the first abutment surface 111 and the second abutment surface 112 of the annular protrusion 12. FIG. 1 shows an example in which the annular protrusion 12 is formed on the first abutment surface 111. As shown in the figure, the annular protrusion 12 is formed so as to surround the opening 113 of the annular base portion 11. There may be one annular protrusion 12, or there may be multiple annular protrusions 12. The number of annular protrusions 12 can be appropriately designed based on the size of the annular base portion 11 (specifically, the thickness of the ring calculated by "outer diameter X" - "inner diameter Y"). FIG. 1 shows two annular protrusions 12, one formed on the outer periphery side of the annular base portion 11 and the other formed on the inner periphery side (the opening 113 side) of the annular base portion 11.

[0019] The outer diameter and inner diameter of the annular protrusion 12 are not particularly limited as long as they are smaller than the outer diameter X of the annular base portion 11 and larger than the inner diameter of the annular base portion 11. The height Z2 and width W of the annular protrusion 12 are not particularly limited and can be set appropriately. When there are multiple annular protrusions 12, the outer diameter, inner diameter, height Z2, and width W of each annular protrusion 12 may be the same or different.

[0020] When there is one annular protrusion 12, for example, the annular protrusion 12 may be formed at an intermediate position between the end on the outer periphery side and the end on the inner periphery side (the opening 113 side) of the annular base portion 11, or may be biased toward either the end on the outer periphery side or the end on the inner periphery side (the opening 113 side). On the other hand, as shown in FIG. 1, when there are a plurality of annular protrusions 12, the intervals between the annular protrusions 12 may be, for example, equal intervals or unequal intervals. In addition, when there are a plurality of annular protrusions 12, the intervals between the annular protrusions 12, the distance from the annular protrusion 12 with the largest outer diameter and inner diameter to the end on the outer periphery side of the annular base portion 11, and the distance from the annular protrusion 12 with the smallest outer diameter and inner diameter to the end on the inner periphery side of the annular base portion 11 may also be equal intervals or unequal intervals.

[0021] For example, the multiple annular protrusions 12 may be concentric. Furthermore, the center of the opening 113 of the annular base portion 11 and the center of the annular protrusion 12 may be concentric.

[0022] The draft angle of the annular protrusion 12 is, for example, 0.5° to 3°. This allows, for example, when the seal member 10 is manufactured using a mold, the seal member 10 to be smoothly removed from the mold.

[0023] The "annular" shape of the annular base portion 11 and the annular protruding portion 12 is not limited to a circular shape such as a perfect circle, an ellipse, or a distorted circle, but may be a circular shape having corners, etc. The circular shape having corners is, for example, a polygonal ring shape such as a triangular or rectangular ring.

[0024] The annular base portion 11 and the annular protrusion 12 may be, for example, a member molded as a continuous integral part, or each may be a member molded independently. When the annular base portion 11 and the annular protrusion 12 are molded independently, the annular base portion 11 and the annular protrusion 12 are bonded together, for example, by an adhesive member. The annular base portion 11 and the annular protrusion 12 may be bonded together using a known technique, such as welding. The adhesive member is not particularly limited, and known techniques, such as adhesives and welding agents, can be used.

[0025] The material constituting the annular base portion 11 and the annular protruding portion 12 is not particularly limited, and examples thereof include elastic materials such as natural rubber, artificial rubber, leather, plastic, cotton, asbestos, glass fiber, paper, wood, etc. Furthermore, the material may be, for example, a combination of the elastic material with metals such as iron, copper, lead, and alloys thereof.

[0026] The annular base portion 11 and the annular protrusion 12 are, for example, elastically deformable. The material of the annular base portion 11 and the annular protrusion 12 is not particularly limited as long as the material is made of a material having a higher elasticity than the first member and the second member. Specifically, the annular base portion 11 and the annular protrusion 12 are elastically deformable by using the elastic material as a main component. Here, the "elastically deformable annular base portion 11 and the annular protrusion 12" refers to the annular base portion 11 and the annular protrusion 12 having general elastic properties, specifically, the annular base portion 11 and the annular protrusion 12 are deformable when an external force is applied, and have elasticity that tends to return to their original dimensions when the external stress is removed. The degree of elasticity (and further, density, hardness, etc.) may be changed depending on the application, etc. The sealing member 10 can be more closely attached to the first member and the second member by the elastically deformable annular base portion 11 and the annular protrusion 12.

[0027] Furthermore, the annular base portion 11 and the annular protruding portion 12 may have, for example, different degrees of elasticity (further, density, hardness, etc.). By making the annular base portion 11 and the annular protruding portion 12 have different degrees of elasticity (further, density, hardness, etc.), it is possible to further improve, for example, adhesion and waterproofness.

[0028] FIG. 2 shows another example of the configuration of the seal member 10. FIG. 2(A) is a front view seen from the surface of the annular base portion 11 where the annular protrusion 12 is formed, and FIG. 2(B) is a side view seen from the cross section A'-A' of FIG. 2(A). FIG. 3 shows another example of the configuration of the seal member 10 shown in FIG. 2. FIG. 3(A) shows another example of FIG. 2(A), and FIG. 3(B) shows another example of FIG. 2(B). Unless otherwise stated, the above description can be used. The seal member 10 may further include one or more linear protrusions 13, for example, as shown in the figure. The number of linear protrusions 13 can be appropriately designed based on the size of the annular base portion 11 (specifically, the thickness of the ring calculated by "outer diameter X"-"inner diameter Y"). FIGS. 2 and 3 show an example in which linear protrusions 13 are formed at a total of 12 locations in the 1 o'clock to 12 o'clock directions of the annular base portion 11.

[0029] The linear convex portion 13 is formed in the radial direction of the annular base portion 11 so as to intersect with the annular convex portion 12 as shown in Figs. 2 and 3. The linear convex portion 13 may be formed to the outer peripheral end and the inner peripheral end of the annular base portion 11 as shown in Fig. 2(B), or may not be formed to each end as shown in Fig. 3(B). The linear convex portion 13 may be formed continuously in the radial direction of the annular base portion 11 as shown in Fig. 2(A), or may be formed intermittently as shown in Fig. 3(A). The case where the linear convex portion 13 is formed intermittently can be said to be the case where the linear convex portion 13 is formed only at the point where it intersects with the annular convex portion 12.

[0030] The length X2 of the linear protrusion 13 can be set appropriately depending on the thickness of the annular base portion 11 (the thickness of the ring calculated by "outer diameter X" - "inner diameter Y") and the width W of the annular protrusion 12. The width W of the linear protrusion 13 may be, for example, the same as the width W of the annular protrusion 13 or may be different. The height Z3 of the linear protrusion 13 may be, for example, the same as the height Z2 of the annular protrusion 12, or may be lower or higher.

[0031] Although it depends on the size of the annular base portion 11 (specifically, the thickness of the ring calculated by "outer diameter X" - "inner diameter Y"), when the linear protrusions 13 are formed intermittently, the length X2 of the linear protrusions 13 is, for example, longer than the width W of the annular protrusion 12. Here, the length X2 of the linear protrusions 13 is the length including the portion overlapping with the width W of the annular protrusion 12. In this case, the linear protrusions 13 may be formed so that only one end of the linear protrusions 13 protrudes from the annular protrusion 12, or so that both ends of the linear protrusions 13 protrude.

[0032] The position of the linear protrusion 13 is not particularly limited as long as it is a position where the linear protrusion 13 intersects with the annular protrusion 12. When there are multiple linear protrusions 13, the intervals between the linear protrusions 13 may be, for example, equal or unequal.

[0033] The draft gradient of the linear protrusions 13 is, for example, 0.5° to 3°. This allows, for example, when the seal member 10 is manufactured using a mold, the seal member 10 to be smoothly removed from the mold. The draft gradients of the annular protrusions 12 and the linear protrusions 13 may be, for example, the same or different.

[0034] The "linear" in the linear protrusion 13 is not limited to a straight line, but may be, for example, a curved line, a wavy line, or the like.

[0035] The linear protrusions 13 may be, for example, a member molded continuously and integrally with the annular base portion 11 and the annular protrusions 12, or may be members molded independently of each other. When the linear protrusions 13 are members molded independently of each other, the linear protrusions 13 are bonded to the annular base portion 11 and the annular protrusions 12 using, for example, the above-mentioned adhesive or a known technique such as welding.

[0036] The material constituting the linear convex portion 13 is, for example, the same as that of the annular base portion 11 and the annular convex portion 12. Moreover, the linear convex portion 13 may also be elastically deformable like the annular base portion 11 and the annular convex portion 12. The annular base portion 11, the annular convex portion 12, and the linear convex portion 13 may have the same degree of elasticity or different elasticities.

[0037] According to the seal member 10 of the present embodiment, the annular convex portion 12 can further improve adhesion and waterproofness. In particular, since the annular convex portion 12 is formed so as to surround the opening 113 of the annular base portion 11, it is possible to more effectively prevent liquid from infiltrating from the outside of the annular base portion 11 toward the opening 113. In addition, by providing the seal member 10 with the linear convex portion 13, it is possible to further improve adhesion and waterproofness. Even if liquid infiltrates due to deterioration, the seal member 10 shown in FIG. 2 can minimize damage caused by liquid infiltration. Specifically, according to the seal member 10 including a plurality of annular convex portions 12 and a plurality of linear convex portions 13, in which the linear convex portions 13 are continuously formed in the radial direction of the annular base portion 11, a plurality of compartments are formed on the annular base portion 11, so that liquid infiltrating from the outside can be kept within the compartments, thereby minimizing damage.

[0038] From the viewpoint of safety and intended use, it is required that lighting devices, particularly aircraft landing guidance flashing devices, do not leak light to the outside. In response to this, according to the sealing member 10 of the present embodiment, the annular convex portion 12 also functions as a light blocking wall, making it possible to further suppress light leakage to the outside.

[0039] If a sealing member has dot-shaped protrusions on an annular base portion, the following problems (1) to (3) arise.

[0040] (1) Decrease in adhesion As the number of protrusions increases, the load applied to each protrusion decreases, and the adhesion decreases. Also, if the protrusions become closer together due to an increase in the number of protrusions, the protrusions will interfere with each other due to the crushing allowance, and the adhesion decreases.

[0041] (2) Deterioration of waterproofing As the number of protruding portions decreases, the structure on the annular base portion (the labyrinth structure formed by the protruding portions) becomes simpler, and thus the waterproofness decreases.

[0042] (3) High cost As the number of protrusions increases, the structure of the mold for manufacturing the seal member becomes more complicated, and the manufacturing cost of the mold becomes higher.

[0043] In this way, if the sealing member has dot-shaped convex portions on the annular base portion, it is difficult to achieve both high adhesion and high waterproofness, and furthermore, low cost. In contrast, according to the sealing member 10 of this embodiment, a wide range can be crushed with one annular convex portion 12, compared to one convex portion provided in the dot shape. Therefore, even with one annular convex portion 12, it is possible to improve adhesion and waterproofness. In addition, since the number of annular convex portions 12 can be reduced compared to the dot-shaped convex portions, the structure of the mold is not complicated, and the cost of manufacturing the mold can be reduced. In this way, according to the sealing member 10 of this embodiment, it is possible to achieve both high adhesion and high waterproofness, and furthermore, low cost.

[0044] Next, a method for producing a seal member of the present invention and a mold of the present invention will be described. The method for producing a seal member of the present invention is a method for producing a seal member using a mold, and is characterized in that the seal member is the above-mentioned seal member 10. The method for producing a seal member of the present invention can use a conventionally known technique, except that the seal member is the above-mentioned seal member 10.

[0045] The mold of the present invention is a mold for manufacturing a seal member, and is characterized in that the seal member is the above-mentioned seal member 10. The mold of the present invention can use conventionally known techniques, except that the seal member is the above-mentioned seal member 10.

[0046] Specifically, the inner peripheral shape of the mold is a shape corresponding to the outer peripheral shape of the seal member 10. That is, the inner peripheral shape of the mold includes an annular base surface corresponding to the shape of the annular base portion 11 and an annular recess corresponding to the shape of the annular protrusion 12. The inner peripheral shape of the mold may also include, for example, a linear recess corresponding to the shape of the linear protrusion 13. For example, the elastic material is filled in the mold in a molten state, and the elastic material is solidified within the mold. The solidification method is not particularly limited, and is, for example, cooling, ultraviolet irradiation, load application, humidity, etc.

[0047] [Embodiment 2] Fig. 4 shows an example of the configuration of the lighting device 20 in this embodiment. Fig. 4(A) is a cross-sectional view (overall side view) of the side of the lighting device 20 when the irradiation direction of the lighting device 20 is set to the left side, and Fig. 4(B) is an enlarged cross-sectional view of Fig. 4(A) in which the portion where the seal member 10 is arranged is enlarged.

[0048] The lighting device 20 of this embodiment includes the sealing member 10 described in the first embodiment, a main body 21, a cover 22, and a light source unit 23. Note that this is merely an example, and the lighting device 20 of this embodiment only needs to have the sealing member 10, and other configurations may be those of a conventionally known lighting device. The description of the first embodiment can be used for the sealing member 10.

[0049] 5, an aircraft landing guidance flash device is shown as the lighting device 20. Note that this is merely an example and is not limited to this. The lighting device 20 may be, for example, a lighting device other than an aircraft landing guidance flash device (for example, a ceiling light, etc.).

[0050] The main body 21 can fix the light source unit 23. The main body 21 shown in FIG. 4 is a housing having an opening, and houses the light source unit 23 and the like inside. Specifically, the main body 21 shown in FIG. 4 can have an inner wall that is tapered and expands from the light source unit 23 toward the opening of the main body 21, and this shape is also called an umbrella shape, for example. In addition, the main body 21 shown in FIG. 4 may have a cross section from the light source unit 23 toward the opening of the main body 21 that is, for example, an arc shape, or a flat linear shape as shown in FIG. 4. The method for fixing (attaching) the light source unit 23 is not particularly limited, and for example, a known technique can be used.

[0051] The lighting device 20 may further include, for example, a light distribution section. The light distribution section is disposed on the light irradiation side of the light source section 23. The light distribution section is a member that sends the light emitted by the light source section 23 to the cover 22 side, for example, by reflection, collection, diffusion, etc. The type of the light distribution section is not particularly limited, and examples thereof include a reflector (reflecting plate) and a lens. The light distribution section may be, for example, either the reflector or the lens, or a combination of both. The light distribution section may use, for example, a known technology.

[0052] The cover 22 is disposed so as to completely cover the irradiation surface of the light source unit 23 (for example, the opening of the main body 21 in the case of FIG. 4) in order to protect at least the light source unit 23, and diffuses the linearly emitted light of the light source unit 23 to transmit it to the outside of the lighting device 20. The material of the cover 22 may be, for example, a material having translucency and further having diffusibility, and a specific example of the material may be a translucent resin such as an acrylic resin. The surface of the cover 22 may be provided with anti-glare properties and light diffusibility by being processed into, for example, a frosted glass-like or slit-like pattern. The cover 22 is, for example, detachable from the main body 21.

[0053] The light source unit 23 emits light. The light is not particularly limited, and may be, for example, visible light or invisible light (infrared light, ultraviolet light). The light source unit 23 may be, for example, a member having a light-emitting element mounted on a board, or may be a fluorescent tube having a longitudinal direction and a transverse direction. In the light source unit 23, the size and material of the board, the number of light-emitting elements (for example, LEDs) mounted on the board, the color of light emitted by the light-emitting elements, etc. are not particularly limited. For example, an LED, a xenon lamp, etc. may be used for the light source unit 23. When the main body 21 has a shape having a longitudinal direction and a transverse direction, the light source unit 23 is attached, for example, along the longitudinal direction of the main body 21. The light source unit 23 is arranged in a space covered by the main body 21 and the cover 22, as shown in, for example, Figs. 4 and 5. When the lighting device 20 is for an aircraft landing guidance flash device, the brightness of the lighting device 20 may be, for example, the same as or higher than the brightness of a xenon lamp of a conventional aircraft landing guidance flash device. The conditions of the substrate and the light emitting elements in the light source section 23 can be appropriately set according to, for example, a desired brightness.

[0054] 4, the seal member 10 is disposed so as to seal between the main body 21 and the cover 22. The annular protrusion 12 of the seal member 10 is provided on at least one of the surface that contacts the main body 21 and the surface that contacts the cover 22. The seal member 10 may be disposed in a location other than between the main body 21 and the cover 22, for example.

[0055] The main body 21, the seal member 10, and the cover 22 are fixed in this order, for example. The fixing method is not particularly limited, and may be, for example, fixing using an engaging member such as a screw or a clamp, fixing using the adhesive member, or fixing using a known technique such as welding.

[0056] In particular, rainwater easily enters the lighting device such as an aircraft landing guidance flashing device that is intended for outdoor use. In contrast, according to this embodiment, the seal member 10 can further improve adhesion and waterproofing. Furthermore, according to this embodiment, the seal member 10 can prevent light from leaking outside the lighting device 20.

[0057] Although the present invention has been described above with reference to the embodiment, the present invention is not limited to the above embodiment. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. [Industrial Applicability]

[0058] According to the present invention, it is possible to provide a sealing member capable of further improving adhesion and waterproofing, and a lighting device using the same. The present invention is useful for lighting devices and their sealing members that are expected to be used outdoors, such as aircraft landing guidance flashing devices.

[0059] 10. Sealing material 11 Annular base part 111 First contact surface 112 Second contact surface 113 Opening 12 Annular protrusion 13 Linear convex part 20 Lighting Equipment 21 Main unit 22 Cover 23 Light source section

Claims

1. An annular base portion; one or more annular protrusions formed on at least one of the first contact surface and the second contact surface of the annular base portion, The first abutment surface is a surface that abuts against a first member, The second contact surface is a surface that contacts a second member, the annular protrusion is formed to surround the opening of the annular base portion, A sealing member, wherein the annular base portion is provided with one or more engagement holes for engaging the first member and the second member.

2. The seal member according to claim 1 , further comprising an engagement hole protrusion provided around the engagement hole so as to surround the engagement hole.

3. The seal member according to claim 1 , wherein a center of the opening of the annular base portion and a center of the annular protrusion are concentric.

4. The seal member according to claim 1 , wherein the annular base portion and the annular protrusion portion are elastically deformable.

5. The seal member according to any one of claims 1 to 4, wherein the draft angle of the annular protrusion is 0.5° to 3°.

6. the first member is either a cover or a main body, When the first member is a cover, the second member is a main body, When the first member is a main body, the second member is a cover, The seal member according to claim 1 , which is used in a lighting device.

7. A lighting device comprising the seal member according to claim 1 .

8. The lighting device according to claim 7 , wherein the seal member is disposed between the body and the cover.

9. 9. The lighting device according to claim 7, which is used as an aircraft landing guidance flasher.

Images