JP6928815B2 - lighting equipment - Google Patents

Description

The present disclosure relates to luminaires.

Conventionally, there are lighting fixtures installed outdoors, such as street lights and security lights. Such luminaires have a translucent cover that covers the light source. The cover is tightly attached to the housing, which is the main body of the luminaire, to protect the light source and waterproof it. However, for example, due to the temperature difference between the inside and the outside of the cover, water may enter from the outside or dew may condense inside, so that water may collect in the cover. Therefore, Patent Document 1 discloses a lighting fixture having a cover including a drain hole for draining the water accumulated inside to the outside.

Japanese Unexamined Patent Publication No. 2014-60034

In the lighting equipment disclosed in Patent Document 1, if the opening of the drain hole is large, the water accumulated in the cover can be easily drained to the outside, but on the other hand, insects invade from the outside through the drain hole. It is not desirable because it makes it easier. Therefore, it is conceivable to make the opening shape of the drain hole smaller than the size of the insect that is expected to invade. However, for example, if the shape of the drain hole is a slit whose slit width is smaller than the size of an insect, water may not be completely drained from the drain hole due to the surface tension of the water accumulated in the cover. be.

It is also conceivable to set the opening of the drain hole relatively large and cover the opening of the drain hole with a mesh sheet having an opening size smaller than the size of the insect to suppress the invasion of insects. However, since the surface of the mesh sheet is water repellent, water cannot pass through the mesh sheet, and as a result, water may not be completely drained from the drain hole.

The present disclosure has been made in view of the problems of the prior art. An object of the present disclosure is to provide a lighting fixture that is advantageous in suppressing the invasion of insects into the cover and improving the drainage property of the water accumulated in the cover.

In order to solve the above problems, the luminaire according to the aspect of the present disclosure is adhered to a housing for accommodating a light source, a cover attached to the housing and provided with a hole, and a part of a peripheral edge on the lower surface side. A layer is provided with a mesh portion covering the hole, and the cover has a recess including a bottom surface to which the adhesive layer is adhered.

According to the present disclosure, it is possible to provide a lighting fixture that is advantageous in suppressing the invasion of insects into the cover and improving the drainage property of the water accumulated in the cover.

It is a figure which shows the lighting fixture which concerns on one Embodiment of this disclosure. It is a figure which shows the shape of the drainage hole part formed in a cover. It is a figure which shows the structure of the mesh part. It is a figure which shows the state of attaching the mesh part to the drainage hole part in chronological order. It is a figure which shows the positional relationship between a drainage hole portion and a mesh portion in a drainage portion. It is a figure which shows the state which the water in a cover drains from a drainage part in chronological order.

Hereinafter, the present embodiment will be described in detail with reference to the drawings. In the following description, when the lighting fixture is attached to a pole, utility pole, pole, etc., the vertical direction is defined as the Z direction, and the X and Y directions are perpendicular to each other in a plane perpendicular to the Z direction. To specify.

First, the configuration of the lighting fixture according to the present embodiment will be described. FIG. 1 is a perspective view showing the appearance of the lighting fixture 100 according to the present embodiment. The lighting fixture 100 is assumed to be installed outdoors, for example, as a street light or a crime prevention light. Further, as an example, the lighting fixture 100 is supported by the tip end portion 2a of the support column 2 erected on the road surface. The lighting fixture 100 may be directly supported by, for example, an existing utility pole instead of the pole 2. Further, the luminaire 100 is supported by the support column 2 so that the arrangement direction of the plurality of light sources 12 along the longitudinal direction of the housing 10 is inclined with respect to the horizontal plane, for example, in the XZ plane.

First, the luminaire 100 includes a housing 10, a light source 12, and a cover 14.

The housing 10 is a lighting fixture main body connected to the support column 2. The housing 10 has a rectangular parallelepiped shape with one direction as the longitudinal direction, and can accommodate a light source 12 and the like. The material of the housing 10 is, for example, a stainless steel material that is strong against impact and resistant to rust.

The light source 12 is, for example, a light emitting element such as an LED (light emitting diode). The luminaire 100 has a plurality of such light sources 12. The plurality of light sources 12 are arranged, for example, on a substrate (not shown) at predetermined intervals with reference to the longitudinal direction of the housing 10. The substrate on which the light source 12 is mounted is fixed to the housing 10.

The cover 14 covers a light emitting surface composed of a plurality of light sources 12, and is attached to the housing 10. The cover 14 is formed of a translucent material such as an acrylic material so that the light emitted from the light emitting surface can be transmitted to the outside. That is, the cover 14 mainly constitutes the appearance of the luminaire 100 as a light emitting surface, and protects the components such as the light source 12 from rain and wind and snow.

The shape of the cover 14 is, for example, a semi-cylindrical shape. In this case, the cover 14 has a curved surface portion 14a having a length matching the longitudinal direction of the housing 10, a first side surface portion 14b connected to one end of the curved surface portion 14a in the longitudinal direction, and a curved surface portion 14a in the longitudinal direction. It includes a second side surface portion 14c connected to the other end. The curved surface portion 14a mainly constitutes the light emitting surface of the cover 14. The curved surface portion 14a includes a first end side 14a ₁ and a second end side 14a ₂ along the longitudinal direction of the curved surface portion 14a (see FIG. 2A). The first side surface portion 14b includes a third end side (not shown) perpendicular to _{the first end side 14a 1} and the second end side 14a _2. The second side portion 14c includes a fourth edge side 14c ₁ of the first edge side 14a ₁ and the second edge side 14a ₂ perpendicular (see Figure 2 (b)). Further, the first end side 14a ₁ , the second end side 14a ₂ , the third end side and the fourth end side 14c ₁ are continuous on the same plane, and the outer frame of the cover 14 is formed. The shape of the outer frame roughly matches the shape of the outer edge of the housing 10. The end of the outer frame of the cover 14 is a protruding portion 14d (see FIG. 2B) that enters a part of the housing 10. When the cover 14 is attached to the housing 10, the protruding portion 14d is engaged with a part of the housing 10 and is fastened and fixed by using a screw or the like (not shown) to prevent rain or the like inside the cover 14. Intrusion can be suppressed.

Further, the lighting fixture 100 has a drainage portion 20 for draining the water accumulated in the cover 14 to the outside. The drainage portion 20 includes a drainage hole portion 22 formed in the cover 14 and a mesh portion 24 attached to the drainage hole portion 22.

FIG. 2 is an enlarged view showing the shape of the drain hole portion 22 formed in the cover 14. FIG. 2A is a plan view of the drainage hole portion 22 as viewed from above in the Z direction. FIG. 2B is a cross-sectional view corresponding to the cross section of IIB-IIB in FIG. 2A and cut along the XZ plane so as to pass through the center of the drain hole portion 22. In addition, in FIG. 2, the cover 14 is drawn in the posture when the luminaire 100 is used.

When the lighting fixture 100 is supported so that the arrangement direction of the light source 12 is inclined with respect to the horizontal plane in the XZ plane, the cover 14 attached to the housing 10 also has the longitudinal direction of the light emitting surface in the XZ plane. The posture is such that it tilts at an angle θ with respect to the horizontal plane. Therefore, when the luminaire 100 is used, a height difference is generated in the cover 14, and in particular, a height difference H is generated in the heights of the first side surface portion 14b and the second side surface portion 14c. _{In this state, the second side surface portion 14c has a bottom surface 14c 2} which is a horizontal plane at a position corresponding to the lowermost portion of the height difference H.

The drain hole portion 22 includes a drain hole 26 and a drain groove 28.

The drain hole 26 is a hole that penetrates the second side surface portion 14c so that one opening is opened at the _{bottom surface 14c 2 and the other opening is opened to the outside of the cover 14.} Hereinafter, the center of the opening on the _{bottom surface 14c 2} side of the drain hole 26 is defined as C in order to use it as a reference for various shapes and dimensions. The Y-direction formation position of the drain hole 26, that is, the position in the width direction perpendicular to the longitudinal direction of the cover 14, is set to an intermediate position between _{the first end side 14a 1} and the second end side 14a _2.

In the present embodiment, the drain hole 26 is a hole _{whose central axis is the axis perpendicular to the bottom surface 14c 2} , that is, the C axis as shown in FIG. 2 (b). On the other hand, the drain hole 26 is a hole _{whose central axis is the center of the opening on the bottom surface 14c 2} side and the outer frame of the cover 14 is parallel to the direction toward the housing 10. , The hole may be a hole whose central axis is an axis inclined with respect to the C axis.

The drainage groove 28 is a recess formed in the _{bottom surface 14c 2.} The drainage groove 28 includes a bottom surface 28a and a convex portion 28b.

The bottom surface 28a is formed around the drain hole 26. Here, the depth of the bottom surface 28a is defined as D1.

The planar shape of the bottom surface 28a is a combination of the rectangular region 28a ₁ and the protruding region 28a ₂ . Regarding the rectangular region 28a ₁ , the length of the short side is defined as L1 and the length of the long side is defined as L2. In this embodiment, the short side is along the longitudinal direction of the cover 14. On the other hand, the long side is along the width direction of the cover 14. The planar shape of the protruding region 28a ₂ is, for example, a semicircular shape. It is desirable that the protruding region 28a ₂ is connected to the portion of the rectangular region 28a ₁ closest to the curved surface portion 14a. Therefore, in the present embodiment, the protruding region 28a ₂ is connected to the long side closest to the curved surface portion 14a. That is, the protruding region 28a ₂ is a region on the bottom surface 28a _{that protrudes from the rectangular region 28a 1} toward the curved surface portion 14a.

Further, the first wall portion 28d on the outer peripheral side of the bottom surface 28a may be inclined so as to be closer to the opening center C from the height position of the bottom _{surface 14c 2 toward the height position of the bottom surface 28a.}

The convex portion 28b is formed around the opening on the _{bottom surface 14c 2 side of the drain hole 26.} The height position of the upper bottom portion of the convex portion 28b is lower than that of _{the bottom surface 14c 2.} On the other hand, the height position of the lower bottom portion of the convex portion 28b is the same as the height of the bottom surface 28a. Further, the second wall portion 28d ₁ on the outer peripheral side of the convex portion 28b may be inclined so as to be separated from the opening center C as the height of the convex portion 28b decreases. Here, among the bottom surface portions of the convex portion 28b, the outer diameter of the bottom surface portion that is connected to the bottom surface 28a is defined as L3.

In the present embodiment, of the side wall portions of the convex portion 28b, the side wall portion _{on the side opposite to the second wall portion 28d 1} also serves as the inner surface of the drain hole 26, but the shape is not necessarily required. It's not a thing. The side wall portion on the side opposite to the second wall portion 28d ₁ does not serve as the inner surface of the drain hole 26, and the convex portion 28b may be independently erected on the bottom surface 28a.

FIG. 3 is a diagram showing the configuration of the mesh portion 24. FIG. 3A is a plan view of the mesh portion 24. FIG. 3B corresponds to the cross section of IIIB-IIIB of FIG. 3A and is a cross-sectional view of the mesh portion 24. FIG. 3C is an enlarged plan view of a part of the mesh sheet 30.

The mesh portion 24 includes a mesh sheet 30 and an adhesive sheet 32.

The mesh sheet 30 is a rectangular sheet composed of fine stitches. The mesh sheet 30 is used to prevent insects that try to invade the cover 14 from invading through the drain hole 26. With reference to FIG. 3C, the insect LB having a total length of about 1 mm is assumed to be an insect that tries to invade the lighting fixture 100. Therefore, as the mesh sheet 30, a mesh sheet 30 having an opening size AP of, for example, about 400 μm can be adopted. Here, the length of the short side of the mesh sheet 30 is defined as L4, and the length of the long side is defined as L5. Further, the thickness of the mesh sheet 30 is defined as T1.

The adhesive sheet 32 is in the form of a tape having a band width defined as W, and has adhesiveness on both sides. The adhesive sheet 32 is adhered to a part of the peripheral edge of one surface of the mesh sheet 30. In other words, the adhesive sheet 32 is not continuously adhered to the entire peripheral edge portion of the mesh sheet 30, but a part thereof is cut. In the present embodiment, as an example, the adhesive sheet 32 is composed of two sheets, each of which is long along the longitudinal direction of the cover 14 and is adhered to the peripheral edge portion on each short side of the mesh sheet 30. Here, the length, that is, the width of the short side of one adhesive sheet 32 is defined as W. The length of the long side of one adhesive sheet 32 is the same as the length L4 of the short side of the mesh sheet 30. Further, the thickness of the mesh portion 24 in a state where the adhesive sheet 32 is adhered to the mesh sheet 30 is defined as T2.

The adhesive sheet 32 is an example of an adhesive layer for attaching the mesh sheet 30 to the bottom surface 28a of the drain hole portion 22. For example, the adhesive layer may be composed of the adhesive material itself applied to the mesh sheet 30 instead of the adhesive sheet.

FIG. 4 is a diagram showing how the mesh portion 24 is attached to the drain hole portion 22 in chronological order. FIG. 4A shows a state before the mesh portion 24 is attached. FIG. 4B shows a state after the mesh portion 24 is attached.

As shown in FIG. 4A, the operator allows the mesh portion 24 to face the drainage hole portion 22 with the side where the adhesive sheet 32 exists in the direction indicated by the white arrow. Bring it closer to 22. Then, the operator attaches the adhesive sheet 32 to the bottom surface 28a so that the mesh portion 24 is accommodated in the drainage groove 28, in other words, the adhesive sheet 32 _{fits in the rectangular region 28a 1 of the bottom surface 28a.} .. As a result, as shown in FIG. 4B, the mesh portion 24 is fixed to the drain hole portion 22. Hereinafter, the state in which the mesh portion 24 is fixed to the drainage hole portion 22 is referred to as a usage state of the drainage portion 20. Hereinafter, with respect to the mesh sheet 30, the surface on the side facing the lighting fixture 100 in which the adhesive sheet 32 does not exist is referred to as the “upper surface” of the mesh sheet 30. On the other hand, the surface on the side where the adhesive sheet 32 exists and faces the drain hole 26 is referred to as the "lower surface" of the mesh sheet 30. This definition is the same for the entire mesh portion 24.

FIG. 5 is a perspective view corresponding to the VV cross section of FIG. 4B and showing the positional relationship between the drain hole portion 22 and the mesh portion 24 in the drain portion 20.

First, the length L6 (see FIG. 3B) between the two adhesive sheets 32 represented by the length L5- (width W × 2) is larger than the outer diameter L3 of the lower bottom portion of the convex portion 28b. That is, the convex portion 28b is in a position where it is sandwiched between the two adhesive sheets 32 in a non-contact manner. In the state of use of the drainage portion 20, the adhesive sheet 32 is in contact with the bottom surface 28a. On the other hand, on the peripheral edge of the mesh sheet 30 on the lower surface side, there is a region where a gap G is formed between the bottom surface 28a and the mesh sheet 30 without being fixed to the bottom surface 28a via the adhesive sheet 32. As a result, as shown by the arrow AR, on the bottom surface 28a, the mesh sheet 30 passes through the gap G from the space inside the cover 14 on the side where the drainage groove 28 is formed. A communication space S that communicates with the lower surface is formed.

Further, in the used state of the drainage portion 20, the upper bottom portion 28b ₂ of the convex portion 28b comes into contact with the lower surface of the mesh sheet 30. As a result, the communication space S does not directly communicate with the drain hole 26.

Further, the planar shape of the mesh sheet 30 is set so as to match the planar shape of _{the rectangular region 28a 1 on the bottom surface 28a.} Further, the outer shape (L4 × L5) of the mesh sheet 30 is set to be slightly smaller than _{the outer shape (L4 × L5) of the rectangular region 28a 1.}

Further, it is desirable that the thickness T2 of the mesh portion 24 is set smaller than the depth D1 of the bottom surface 28a. That is, in the used state of the drainage portion 20, the height of the upper surface of the mesh sheet 30 is lower than the height of the bottom surface 14c ₂ by a difference h.

Next, the action of the lighting fixture 100, particularly the action of the drainage portion 20, will be described.

FIG. 6 is a diagram showing in chronological order how the water collected in the cover 14 escapes to the outside through the drainage portion 20. As described above, when the luminaire 100 is used, the cover 14 is in an inclined posture at an angle θ. Therefore, when water is generated in the cover 14, the water WA in which the water is collected _{travels along the inner surface 14a 3} of the curved surface portion 14a and heads toward the bottom surface 14c _2. In the present embodiment, the drainage portion 20 is present on _{the bottom surface 14c 2 of the cover 14.} Therefore, the water WA collected on the bottom surface 14c ₂ collects on the drainage portion 20 as shown in FIG. 6 (b).

Here, as a comparative example, consider a case where the drainage portion has a configuration in which a sheet such as the mesh sheet 30 illustrated above only covers the opening of the drainage hole. In this case, since the mesh sheet has a very small opening size, it is possible to prevent insects that try to invade the inside of the cover from the outside through the drain holes. However, in such a mesh sheet having a small opening size, the sheet surface has water repellency. Therefore, the water collected on the mesh sheet is repelled by the surface of the sheet and is difficult to pass through the mesh sheet.

On the other hand, if not only the upper surface of one surface of the mesh sheet on the side where water collects but also the lower surface of the other surface of the mesh sheet on the side facing the drain hole is wet, the mesh sheet The whole is soaked in water, and the water repellency of the mesh sheet is suppressed. Therefore, in the present embodiment, the drainage portion 20 adopts the mesh sheet 30 and further adopts the drainage groove 28 having the above-mentioned shape.

With reference to FIG. 6B again, the water WA collected on the drainage portion 20 also exists above _{the protruding region 28a 2 of the bottom surface 28a of the drainage groove 28.} Here, referring to FIG. 5, the protruding region 28a ₂ is not covered with the mesh portion 24 above. Therefore, the water WA that has flowed above the protruding region 28a ₂ is guided along the arrow AR in the communication space S, and finally reaches the lower surface of the mesh sheet 30. As a result, not only the upper surface of the mesh sheet 30 but also the lower surface is wetted with the water WA, so that the entire mesh sheet 30 is immersed in the water WA. As a result, the water repellency of the mesh sheet 30 is suppressed, so that the water WA accumulated on the drainage portion 20 is then removed from the cover 14 through the drainage hole 26 as shown in FIG. 6C. It is gradually drained.

According to the configuration of the mesh portion 24 in the present embodiment, as shown in FIG. 5, _{not only the portion where the protruding region 28a 2} is connected to the rectangular region 28a ₁ but also the rectangle on the opposite side of the cover 14 in the longitudinal direction. There is no adhesive sheet 32 on the region 28a _1. Therefore, some of the water WA collected on the drainage portion 20 is guided to the lower surface of the mesh sheet 30 along the arrow AR in the communication space S of the place.

Next, the effect of the lighting fixture 100 will be described.

The lighting fixture 100 according to the present embodiment is provided with a housing 10 for accommodating a light source 12, a cover 14 attached to the housing 10 and provided with holes, and an adhesive layer on a part of a peripheral edge on the lower surface side. , A mesh portion 24 that covers the hole is provided. The cover 14 has a recess including a bottom surface 28a to which the adhesive layer is adhered.

Here, the above hole corresponds to, for example, a drain hole 26. The adhesive layer corresponds to, for example, an adhesive sheet 32. The recess corresponds to, for example, a drainage groove 28.

According to the lighting fixture 100 according to the present embodiment, by adopting the mesh portion 24 including the mesh sheet 30 as illustrated above, the insect LB that tries to invade the inside of the cover 14 from the outside through the drain hole 26 can be prevented. It can be prevented from invading. Therefore, in order to improve the drainage efficiency of the water WA in the cover 14 through the drain hole 26, the opening of the drain hole 26 can be increased. Specifically, for example, the size of the opening of the drain hole 26 can be made larger than the total length of the insect LB.

Further, the water WA flowing above the bottom surface 28a passes through the gap G and is directly guided to the lower surface of the mesh portion 24, and can particularly wet the lower surface of the mesh sheet 30. Therefore, the water repellency of the mesh sheet 30 is suppressed, and the water WA accumulated on the drainage portion 20 can be drained to the outside of the cover 14 through the drainage hole 26.

Further, the mesh portion 24 is housed in the drainage groove 28. Therefore, it is desirable that the shape and position of the drainage groove 28 are set in advance according to the position where the mesh portion 24 is to be fixed. Thereby, the operator can easily position the mesh portion 24 when fixing the mesh portion 24 to the drainage groove 28, that is, when the adhesive sheet 32 is attached to the bottom surface 28a.

Further, in the luminaire 100 according to the present embodiment, the cover 14 has a convex portion 28b that is not in contact with the adhesive layer. Further, a part of the lower bottom portion of the convex portion 28b is connected to the bottom surface 28a.

According to the lighting fixture 100 according to the present embodiment, the adhesive sheet 32 does not exist between the bottom surface 28a and the mesh sheet 30, and the communication space S of the gap G is always provided in the region other than the convex portion 28b. It will exist. Then, since the convex portion 28b can guide the water WA that has passed through the gap G toward the lower surface of the mesh portion 24 without waste, the lower surface of the mesh sheet 30 can be quickly wetted.

Further, in the lighting fixture 100 according to the present embodiment, the upper bottom portion 28b ₂ of the convex portion 28b abuts on the lower surface of the mesh portion 24 on the side where the adhesive layer is provided.

According to the lighting fixture 100 according to the present embodiment, the communication space S communicating with the gap G and the drain hole 26 are blocked by the convex portion 28b and do not directly communicate with each other. Therefore, it is possible to prevent the insect LB that has invaded from the outside through the drain hole 26 from invading the inside of the cover 14 through the gap between the _{lower surface of the mesh sheet 30 and the upper bottom 28b 2 of the convex portion 28b.} can.

Further, in the lighting fixture 100 according to the present embodiment, the upper surface on the side opposite to the lower surface on the side where the adhesive layer of the mesh portion 24 is provided is located at a position lower than the inner surface of the cover 14 on which the recess is formed. ..

Here, the inner surface of the cover 14 on which the recess is formed corresponds to _{, for example, the bottom surface 14c 2.}

According to the luminaire 100 according to the present embodiment, since the water WA that has gathered on the bottom surface 14c ₂ is easily guided to the upper surface of the mesh portion 24 is located lower than the bottom surface 14c _2, waste water from the water drain part 20 The amount of water WA remaining without being left can be reduced as much as possible.

Further, in the lighting fixture 100 according to the present embodiment, the recess is formed on the inner bottom surface of the cover 14.

According to the luminaire 100 according to the present embodiment, the drain groove 28 is formed on the inner bottom surface of the cover 14 such as the _{bottom surface 14c 2, especially when the cover 14 is tilted with respect to the horizontal plane.} become. Therefore, the water WA generated inside the cover 14 can be guided to the drainage portion 20 along the inner surface of the cover 14.

Further, in the luminaire 100 according to the present embodiment, the adhesive layer has a long shape along the longitudinal direction of the cover 14.

As described above, the adhesive sheet 32 is provided on a part of the peripheral edge portion on the lower surface side of the mesh portion 24. Further, the adhesive sheet 32 is not in contact with the convex portion 28b. On top of that, according to the lighting fixture 100 according to the present embodiment, the adhesive layer has a shape such that the convex portion 28b is sandwiched in the width direction of the cover 14, like the two adhesive sheets 32 illustrated above. Can be. As a result, a space where a gap G is formed between the bottom surface 28a and the mesh sheet 30 is likely to be formed along the longitudinal direction of the cover 14. _{Therefore, the water WA flowing along the inner surface 14a 3} extending in the longitudinal direction of the cover 14 is likely to be guided to the communication space S as it is.

Further, in the luminaire 100 according to the present embodiment, a part of the bottom surface 28a projects toward the inner surface of the cover 14 in the longitudinal direction.

Here, a part of the bottom surface 28a corresponds to _{, for example, a protruding region 28a 2.} Further, the inner surface of the cover 14 in the longitudinal direction corresponds to _{, for example, the inner surface 14a 3 of the curved surface portion 14a of the cover 14.}

According to the luminaire 100 according to the present embodiment, the bottom surface 28a has a protruding region 28a ₂ whose upper surface is not covered with the mesh portion 24. Further, the protruding region 28a ₂ is located on the side of the region of the bottom surface 28a _{that is closer to the inner surface 14a 3 of the curved surface portion 14a.} Therefore, the water WA flowing along the inner surface 14a ₃ of the cover 14 is likely to be guided to the connected space S as it is.

Although the preferred embodiment has been described above, the present embodiment is not limited to this, and various modifications and changes can be made within the scope of the gist thereof.

10 Housing 12 Light source 14 Cover 24 Mesh part 26 holes (drainage holes)
28 Recess (drainage groove)
28a Bottom surface 28b Convex part 32 Adhesive layer (adhesive sheet)
100 lighting fixtures

Claims (5)

A housing for storing the light source and
A cover attached to the housing and provided with a drain hole,
Adhesive layer is provided on a part of the periphery of the lower surface, and a mesh portion covering the water drain hole,
The cover, on the inside, have a water drain groove containing the water drain hole,
The drainage groove includes a convex portion formed around the drainage hole and a bottom surface for adhering the adhesive layer which is not in contact with the convex portion.
The upper bottom portion of the convex portion abuts on a part of the lower surface of the mesh portion.
The lower bottom portion of the convex portion is a lighting fixture connected to the bottom surface. The upper surface of the side opposite to the front Symbol lower surface of the mesh portion is positioned lower than the inner surface of the cover in which the draining grooves are formed, the lighting device according to claim 1. The lighting fixture according to claim 1 or 2 , wherein the drain groove is formed on the inner bottom surface of the cover. The luminaire according to any one of claims 1 to 3 , wherein the adhesive layer has a long shape along the longitudinal direction of the cover. The luminaire according to any one of claims 1 to 4 , wherein a part of the bottom surface projects toward the inner surface in the longitudinal direction of the cover.

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