JP7278873B2 - lighting equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lighting device, and more particularly to a lighting device installed outdoors.

Generally, in a lighting device, it is important to efficiently dissipate heat generated by a light source to the outside. In particular, in a lighting device using a light-emitting diode (LED) as a light source, when the temperature of the LED reaches a certain temperature or higher, the luminous efficiency drops significantly and the LED itself deteriorates. It is known to adversely affect product performance and product life.

Such a tendency is conspicuous in outdoor installation lighting devices equipped with high-output, high-brightness LEDs, and it is required to efficiently dissipate the heat generated from the LED light source and the light source driving section.

Also, when the lighting device is installed outdoors such as under the eaves away from the ceiling surface, birds may fly into the space formed between the lighting device and the ceiling surface. When birds fly in, the appearance of the lighting system deteriorates due to the damage caused by their droppings. In addition, the components that make up the lighting system are corroded by their droppings, which reduces the durability of the components and shortens the product life of the lighting system. It is feared that it will be shortened.

Therefore, in this type of lighting device, in addition to the heat radiation described above, a bird-proof property for avoiding the damage caused by birds' droppings is taken into consideration. For example, in Patent Document 1, a bird intrusion prevention means is provided to prevent birds from entering a space where the heat radiation fins are present while ensuring heat dissipation by exposing heat radiation fins that emit heat from a light source to the outside of the device. It is In addition, in Patent Document 2, similarly, a heat sink that emits heat from a light source is exposed to the outside of the device to ensure heat dissipation, while the tip of the heat sink is formed into an uneven shape, and the tip of the convex portion is tapered, It is designed to be repelled by birds.

Conventionally, as a lighting device for outdoor installation, as shown in FIGS. There is also a lighting device 51 that accommodates heat radiation fins 102 and the like that radiate heat from the light source. In such a lighting device 51, it is possible to reliably prevent birds from entering by mounting the lighting device 51 on a mounting surface such as a ceiling surface without leaving a gap for birds to enter.

Here, the configuration of a conventional illumination device 51 will be briefly described with reference to FIGS. 7 and 8. FIG. FIG. 7 is a diagram showing the configuration of a conventional illumination device 51, including a bottom view and a side view showing the light irradiation side. FIG. 8 is a diagram showing the configuration of a conventional lighting device 51, including a top view and a front view showing the mounting side.

The housing 52 is divided into a box-shaped attachment box 52A with an open lower surface and a lid portion 52B detachably attached to the lower surface of the attachment box 52A. A plurality of light source units 55 integrally provided with radiating fins 57 and a power supply unit 56 for supplying power to each light source unit 55 are mounted on the lid portion 52B, and constitutes the main body portion of the lighting device 52 .

The light source unit 55 includes an LED board (not shown) on which a plurality of LEDs 58 are mounted, and heat radiation fins 57 are provided on the rear side of the LED board. The heat radiation fins 57 are arranged in parallel with a plurality of plate-shaped heat radiation plates. A plurality of unit openings 64 are formed in the lid portion 52B so as to match the installation positions of the light source units 55 . Each light source unit 55 is attached to each unit opening 64 with the mounting surface of the LED 58 facing outside from the unit opening 64 .

In addition, the unit opening 64 is formed to be one size larger than the width of the light source unit 55 in the lateral direction. , slit-shaped openings 65 are formed.

The power supply unit 56 is installed above the light source unit 55 provided side by side, that is, above the radiation fins 57 so as to overlap the light source unit 55 . Also, although not shown, in a lighting device with a small number of light source units 55, the light source units 55 are installed at the same height position as the light source units 55 so as to be sandwiched between the adjacent light source units 55. There is also

The upper surface of the mounting box 52A has an open central portion, leaving an outer peripheral portion for mounting on the mounting surface, so that the power supply line on the mounting surface side can be drawn through the opened central portion. Four fixing holes 62 for inserting fastening members such as bolts are formed in the remaining outer peripheral portion.

Such mounting of the lighting device 51 on the ceiling is performed by separating the mounting box 52A and the main body having the light source unit 55 and the like mounted on the lid 52B. First, the mounting box 52A is fastened and fixed to the mounting surface with bolts or the like through four fixing holes 62 provided. After that, the main body is fitted from the lower surface side of the mounting box 52A and fastened and fixed to the mounting box 52A with screws or the like.

A hinge (not shown) is provided on one side of the lid portion 52B so that the lid portion 52B can rotate with respect to the mounting box 52A by being engaged with the mounting box 52A side. By providing such a hinge, the main body and the mounting box 52A can be attached and detached through a hooked state with the hinge as a fulcrum, and the main body can be attached with good workability while preventing the main body from coming off.

JP 2014-78329 A JP 2016-51650 A

The conventional lighting device 51 in which the radiating fins 57 are housed inside the housing 52 has the advantage of being able to reliably prevent the intrusion of birds by mounting it on the mounting surface without leaving any gaps for the intrusion of birds.

However, inside the housing 52 , the power supply unit 56 is installed above the power supply unit 55 or at the same height as the light source unit 55 so as to be sandwiched between the adjacent light source units 55 . When the power supply unit 56 is arranged in such a position, the power supply unit 56 is exposed to high-temperature air that has passed through the radiation fins 57, and the power supply unit 56 becomes hot due to the heat generated by the LEDs 58, causing deterioration of the power supply unit 56. There is a problem that it is promoted.

An object of one embodiment of the present invention is to provide a lighting device that can reliably prevent birds from entering and can suppress deterioration of a power supply unit.

In order to solve the above problems, a lighting device according to an aspect of the present invention includes a housing having ventilation holes in at least a side wall, and a light source and a light source that dissipates heat generated in the light source. a light source unit that includes a heat dissipation part and is installed inside the housing with the light source side facing the outside from the bottom surface of the housing; and a power supply unit installed at a position that does not hinder the flow of air passing through the heat radiating part, wherein the housing has ventilation holes in the side walls, the upper surface side is fixed to the mounting surface, and the lower surface side is open. A first housing, detachable from the first housing, constitutes the lower surface of the housing by being attached to the first housing, and is attached to the first housing by a hinge a rotatable second housing, wherein the light source unit and the power supply unit are installed in the second housing, and the power supply unit has a side from which a power supply line connected to an external electric wire is drawn out It is arranged so as to be positioned on the hinge side, and the position of the power supply unit on the side from which the power supply line is drawn is positioned on the hinge side with respect to the center of the second housing.
In order to solve the above problems, a lighting device according to an aspect of the present invention includes a housing having ventilation holes in at least a side wall, and a light source and a light source that dissipates heat generated in the light source. a light source unit that includes a heat dissipation part and is installed inside the housing with the light source side facing the outside from the bottom surface of the housing; a power supply unit installed at a position that does not interfere with the flow of air passing through the heat radiating part, and the lower surface of the housing is provided with a slit-shaped opening corresponding to the light source unit, the ventilation hole, and the slit-shaped opening is arranged at a position orthogonal to the longitudinal direction of the fins of the heat radiating section, and the power supply unit is arranged at a position orthogonal to the longitudinal direction of the slit-shaped opening. It is characterized by

According to one aspect of the present invention, it is possible to provide a lighting device that can reliably prevent birds from entering and can suppress deterioration of a power supply unit.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, which shows an embodiment of the present invention, is a diagram showing the configuration of a lighting device according to an embodiment of the present invention, including a bottom view and a side view showing the light irradiation side. It is a figure which shows the structure of the said illuminating device, and includes the top view and front view which show an attachment side. FIG. 2 is a diagram showing the internal structure of the lighting device, and is a cross-sectional view taken along the line XX in the bottom view of FIG. 1; FIG. 2 is a view showing the internal structure of the lighting device, and is a cross-sectional view taken along the line YY in the side view of FIG. 1; It is a perspective view which shows the state in the middle of installation of the said illuminating device. It is an image figure which shows an example of installation of the said illuminating device. It is a figure which shows the structure of the conventional illuminating device, and includes the bottom view and side view which show the light irradiation side. It is a figure which shows the structure of the said conventional illuminating device, and includes the top view and front view which show an attachment side.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail.

[Embodiment 1]
FIG. 1 shows an embodiment of the present invention, and is a diagram showing the configuration of a lighting device 1 according to the embodiment of the present invention, including a bottom view and a side view showing the light irradiation side. FIG. 2 is a diagram showing the configuration of the lighting device 1, including a top view and a front view showing the installation side. FIG. 3 is a diagram showing the internal structure of the illumination device 1, and is a cross-sectional view taken along line XX in the bottom view of FIG. FIG. 4 is a diagram showing the internal structure of the illumination device 1, and is a cross-sectional view taken along the line YY in the side view of FIG. FIG. 5 is a perspective view showing a state in which the lighting device 1 is being installed.

As shown in FIGS. 1 and 2, the lighting device 1 has an air-permeable housing 2 provided with a plurality of ventilation holes 10 at least in the sidewalls. 1 and 2 exemplify the one in which an elongated vent hole 10 is formed, but the vent hole may be formed in a punching metal or an expanded metal, and the shape is not limited. .

The housing 2 includes a box-shaped mounting box (first housing) 2A whose upper surface is fixed to a mounting surface such as a ceiling surface and whose lower surface is open. It is divided into a lid portion (second housing) 2B that forms the bottom surface of the housing 2 by being attached to the bottom surface (see FIG. 5). As shown in FIG. 2, the upper surface of the mounting box 2A is provided with a lead-in hole 11, a pair of fixing holes 12, 12, and a plurality of ventilation holes 13. As shown in FIG. The lead-in hole 11 is a hole for drawing the external electric wire L4 (see FIG. 5) extending from the mounting surface side into the inside of the housing 2, and is formed in the center of the upper surface.

The pair of fixing holes 12, 12 are holes for fixing the mounting box 2A (lighting device 1) to the mounting surface with bolts 23 or the like (see FIG. 5), which are fastening members. A pair of fixing holes 12, 12 are provided symmetrically above the left and right center lines M with the lead-in hole 11 interposed therebetween. The pair of fixing holes 12, 12 may have a circular hole shape, but in the present embodiment, they are formed in an elongated hole shape with the direction along the left and right center lines M as the longitudinal direction. By forming the pair of fixing holes 12, 12 into an elongated hole shape, the space between the bolts 23, 23 can be widened.

Like the ventilation holes 10 provided in the side wall, the ventilation holes 13 are provided to draw air into the interior of the housing 2 to improve ventilation. In the top view of FIG. 2, all the slit-like holes other than the lead-in hole 11 and the pair of fixing holes 12, 12 are ventilation holes 13. As shown in FIG.

On the other hand, on the upper surface of the lid portion 2B, that is, on the inner surface when attached to the mounting box 2A, a plurality of light source units 5 and a power supply for supplying power to the plurality of light source units 5 are provided as shown in FIGS. A unit 6 is installed. In the present embodiment, the light source unit 5 and the power supply unit 6 both have a long rectangular shape on one side. there is Hereinafter, the state in which the plurality of light source units 5 and the power supply units 6 are installed on the lid portion 2B will be referred to as a main body portion.

The light source unit 5 includes an LED board (not shown) on which a plurality of LEDs 8 (see FIG. 1) are mounted, and a back side of the LED board for releasing heat (exhaust heat) generated by the LEDs 8. Radiation fins 7 are provided. The LED substrate and the heat radiation fins 7 are unitized, and the LED substrate and the heat radiation fins 7 constitute the light source unit 5 .

The heat radiation fin 7 has a base 7b attached to the back surface of the LED substrate, and a plurality of plate-shaped heat radiation plates 7a are arranged in parallel on the upper surface of the base 7b. The plurality of heat sinks 7 a are provided parallel to the short side direction of the light source unit 5 and arranged side by side in the longitudinal direction of the light source unit 5 . With such a fin configuration, the wind that has passed through the heat radiation fins 7 flows along the width direction of the light source unit 5 . These three light source units 5 are arranged so that the radiation fins 7 located downstream do not block the flow of air passing through the radiation fins 7 located upstream. ing. A double-headed arrow D in FIG.

Further, in the light source unit 5, there is a part where the heat sink 7a is not partially formed in the central part in the longitudinal direction of the base 7b, and a power supply line L1 for supplying power to the LEDs 8 is led out from this part.

The light source unit 5 as described above is screw-fixed to the fixing portion 16 with the mounting surface of the LED 8 exposed to the unit opening 14 provided in the lid portion 2B. The lid portion 2B is formed with a plurality of unit opening portions 14 and a plurality of fixing portions 16 bent in an L shape so as to match the installation position of the light source unit 5 .

The width of the unit opening 14 in the widthwise direction is one size larger than the width of the light source unit 5 in the widthwise direction. Thus, with the light source unit 5 attached, a slit-like opening 15 extending along the longitudinal direction of the light source unit 5 is formed between the light source unit 5 and the lid portion 2B. The slit-shaped openings 15 are provided on both sides of the light source unit 5 . By forming the slit-shaped opening 15, it becomes possible to take outside air into the inside from the lower surface of the lighting device 1, and the side surface along the longitudinal direction of the light source unit 5 is provided with a flow of air flowing from the bottom to the top. can be produced. In addition, in FIG. 4, the slit-shaped opening 15 is emphasized and shown with a thick line.

The power supply unit 6 is mounted on the upper surface of the lid portion 2B at the same height as the light source unit 5 and at a position that does not block the flow of air passing through the heat radiation fins 7 indicated by the double arrow D in FIG. are placed. Specifically, in this embodiment, the longitudinal direction of the power supply unit 6 is arranged at a position orthogonal to the longitudinal direction of the light source unit 5 . By arranging the power supply unit 6 in such a positional relationship, even when the power supply unit 6 is mounted at the same height position as the light source unit 5, the power supply unit 6 is prevented from being exposed to high-temperature air passing through the radiation fins 7. can be avoided.

Also, from one end in the longitudinal direction of the power supply unit 6, an output-side feeder line L2 is drawn out for feeding power to the light source unit 5, and from the other end, an external electric wire extending from the above-described mounting surface side. An input-side feeder line L3 connected to L4 (see FIG. 5) is drawn out. A connector 20 is provided at the tip of the output-side power supply line L2, and the power supply line L1 drawn out from each light source unit 5 is connected to the connector 20. As shown in FIG.

Further, a hinge 25 is provided on one side of the lid portion 2B to support the lid portion 2B rotatably with respect to the mounting box 2A by engaging with a receiving portion 26 on one side of the lower surface of the mounting box 2A. (See Figure 3).

The attachment of the illumination device 1 to the attachment surface is performed by separating the attachment box 2A and the main body having the light source unit 55 and the like attached to the lid 2B. First, as shown in FIG. 5, the mounting box 2A is fastened and fixed to the mounting surface via the pair of fixing holes 12 with bolts 23 or the like. After that, the hinge 25 of the lid portion 2B of the main body portion is hooked to the receiving portion 26 of the mounting box 2A so as to be rotatably supported. Then, in this state, the input-side feeder line L3 of the power supply unit 6 is connected to the external electric wire L4 drawn from the lead-in hole 11 . When the connection between the input-side feeder line L3 and the external electric wire L4 is completed, the main body portion is rotated so as to be lifted to close the lower surface of the mounting box 2A with the main body portion, and then fastened and fixed with screws or the like.

As described above, by providing the hinge, the main body and the mounting box 2A can be attached and detached through a hooked state with the hinge 25 as a fulcrum, so that the main body can be attached with good workability while preventing the main body from falling off. can be done.

FIG. 6 is an image diagram showing an example of installation of the lighting device 1. As shown in FIG. As shown in FIG. 6, the mounting surface 28 of an outdoor facility such as a gas station may not be flat but have a corrugated structure. In the conventional lighting device 51 shown in FIGS. 7 and 8, installation cannot be performed if the span of the wave on the mounting surface 28 does not match the interval between the fixing holes 62. However, in the case of the lighting device 1, the pair of fixing holes 12 12 can be used for two-point bolting, so it can be attached to the mounting surface 28 of the corrugated plate structure without any problem. Since the housing 2 is provided, it is possible to reliably prevent birds from entering by attaching the mounting surface 28 without leaving a gap for birds to enter. In the conventional lighting device 51, since the central portion of the upper surface is open, in the case of the mounting surface 28 having a corrugated plate structure, there is a possibility that a gap may be created between the mounting surface 28 and the upper surface of the lighting device 51 through which birds may enter. However, since the top surface is completely blocked, there is no such problem.

[Embodiment 2]
Other embodiments of the invention are described below. For convenience of description, members having the same functions as those of the members described in the above embodiments are denoted by the same reference numerals, and description thereof will not be repeated.

Here, the configuration of this embodiment will be described with reference to FIG. 4 used in the description of the first embodiment. Note that the configuration described below as the configuration of the present embodiment does not have to be provided in the lighting device 1 of the first embodiment.

As shown in FIG. 4, a unit opening 14 for mounting the light source unit 5 is provided on the upper surface of the lid 2B, and a plurality of slit-shaped openings 15 are formed between the light source unit 5 and the lid 2B. By forming such a slit-shaped opening 15, it becomes possible to take outside air into the inside from the lower surface of the lighting device 1, and the side surface along the longitudinal direction of the light source unit 5 is exposed to the air flowing from the bottom to the top. can create a flow of

However, the wind blowing from the bottom to the top along the light source unit 5 also contains heat by flowing along the power supply unit 6 and reaches a high temperature. be. Therefore, the power supply unit 6 is arranged at a position where it is not exposed to the wind blowing upward along the light source unit 5 . Specifically, in this embodiment, the longitudinal direction of the power supply unit 6 is arranged at a position orthogonal to the longitudinal direction of the light source unit 5 . By arranging the power supply unit 6 in such a positional relationship, the effect of the flow of air entering through the slit-shaped opening 15 and exiting upward can be minimized. Furthermore, when the slit-shaped opening 15 is provided, the lid 2B is likely to be deformed along the longitudinal direction of the slit-shaped opening 15. It functions as a reinforcing plate for 2B and can increase the rigidity of the main body.

[Embodiment 3]
Other embodiments of the invention are described below. For convenience of description, members having the same functions as those of the members described in the above embodiments are denoted by the same reference numerals, and description thereof will not be repeated.

Here, the configuration of this embodiment will be described with reference to FIGS. 4 and 5 used in the description of the first embodiment. Note that the configuration described below as the configuration of the present embodiment does not have to be provided in the lighting device 1 of the first embodiment.

As shown in FIGS. 4 and 5, the power supply unit 6 is arranged such that the input-side feeder line L3 connected to the external electric wire L4 extending from the mounting surface side is positioned on the rotation fulcrum side where the hinge 25 is provided. It is

In this way, the wire length of the input-side power supply line L3 can be shortened by locating the end side from which the input-side power supply line L3 is drawn out to be positioned on the rotation fulcrum side where the hinge 25 is provided. can be done. As a result, when the main body is rotated so as to be lifted and the lower surface of the mounting box 2A is covered with the main body, the extra input-side feeder line L3 does not get caught between the mounting box 2A and the main body. The workability of the installation work of the lighting device 1 can be improved.

[Embodiment 4]
Other embodiments of the invention are described below. For convenience of description, members having the same functions as those of the members described in the above embodiments are denoted by the same reference numerals, and description thereof will not be repeated.

Here, the configuration of this embodiment will be described with reference to FIGS. 2 and 6 used in the description of the first embodiment. Note that the configuration described below as the configuration of the present embodiment does not have to be provided in the lighting device 1 of the first embodiment.

Since the light source unit 5 is arranged in the central part of the housing 2, there is no problem with the weight balance. Generally, the side on which the power supply unit 6 is arranged becomes heavy. In particular, when aluminum or the like is selected as the material of the housing 2 to reduce the weight, the housing 2 tends to be distorted if there is a problem with the balance of the center of gravity.

As shown in FIG. 2, in the lighting device 1, the power supply unit 6 is symmetrical with respect to the left and right center lines M passing through the middle of the pair of fixing holes 12, 12, and the center of gravity of the power supply unit 6 is located at the center of the left and right. It is arranged so as to be positioned above the line M. By arranging the power supply unit 6 in this way, as shown in FIG. 6, even when the lighting device 1 is installed with two bolts, the balance of the center of gravity can be maintained.

Further, when aluminum or the like is selected as the material of the housing 2 to reduce weight, the central portion along the left and right center lines M where the pair of fixing holes 12 and 12 are provided is made of SUS or the like. It is preferable to provide a reinforcing plate with high rigidity.

〔summary〕
The lighting device according to aspect 1 of the present invention includes a housing 2 having ventilation holes 10 at least in the side walls, a light source (LED 8), and a heat dissipation part (heat dissipation A light source unit 5 including fins 7) and installed inside the housing 2 with the light source side facing the outside from the bottom surface of the housing 2, and the light source unit 5 inside the housing 2. and a power supply unit 6 installed at a height position and at a position that does not hinder the flow of air passing through the heat radiating section.

In the lighting device according to aspect 2 of the present invention, in aspect 1 above, a slit-shaped opening 15 is provided in the lower surface of the housing 2 corresponding to the light source unit 5, and the power supply unit 6 includes: It is also possible to adopt a configuration in which it is arranged at a position perpendicular to the longitudinal direction of the slit-shaped opening 15 .

Further, in the lighting device according to aspect 3 of the present invention, in the above aspect 1 or 2, the housing 2 has a ventilation hole 10 in the side wall, the upper surface side is fixed to the mounting surface, and the lower surface side is open. 1 housing (mounting box 2A), which is detachable from the first housing, constitutes the lower surface of the housing 2 by being attached to the first housing, and a second housing (lid portion 2B) rotatable with respect to one housing; the light source unit 5 and the power supply unit 6 are installed in the second housing; It is also possible to adopt a configuration in which the side from which the feeder line (input-side feeder line L3) connected to the external electric wire L4 is pulled out is located on the hinge 25 side.

In the lighting device according to aspect 4 of the present invention, in the aspect 1, 2 or 3, a pair of fixing holes 12, 12 for fixing two points to the mounting surface are formed in the upper surface of the housing 2. , the center of gravity of the power supply unit 6 may be positioned on a line (center line M) connecting the centers of these fixing holes 12 , 12 .

The present invention is not limited to the above-described embodiments, but can be modified in various ways within the scope of the claims, and can be obtained by appropriately combining technical means disclosed in different embodiments. is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

1 lighting device 2 housing 2A mounting box (first housing)
2B lid (second housing)
5 light source unit 6 power supply unit 7 heat dissipation fins (heat dissipation part)
7a heat sink 7b base 8 LED (light source)
10, 13 Ventilation hole 12 Fixing hole 14 Unit opening 15 Slit opening 16 Fixing part 20 Connector 23 Bolt 25 Hinge 26 Receiving part L1 Feeder line L2 Output feeder line L3 Input feeder line L4 External wire

Claims (3)

a housing having ventilation holes in at least a side wall;
A light source including a light source and a heat dissipation part provided on the back side of the light source that dissipates heat generated in the light source, and is installed inside the housing with the light source side facing the outside from the bottom surface of the housing. a unit;
a power supply unit installed at the same height position as the light source unit inside the housing and at a position that does not interfere with the flow of air passing through the heat dissipation unit ;
The housing is
a first housing having a side wall with a ventilation hole, a top side fixed to the mounting surface, and a bottom side open;
A second housing that is attachable to and detachable from the first housing, constitutes the lower surface of the housing by being attached to the first housing, and is rotatable with respect to the first housing by means of a hinge. a housing;
The light source unit and the power supply unit are installed in the second housing,
The power supply unit is arranged so that the side from which a power supply line connected to an external electric wire is drawn is positioned on the hinge side,
The lighting device according to claim 1, wherein a side of the power supply unit from which the power supply line is drawn is located on the hinge side with respect to the center of the second housing. a housing having ventilation holes in at least a side wall;
A light source including a light source and a heat dissipation part provided on the back side of the light source that dissipates heat generated in the light source, and is installed inside the housing with the light source side facing the outside from the bottom surface of the housing. a unit;
a power supply unit installed at the same height position as the light source unit inside the housing and at a position that does not interfere with the flow of air passing through the heat dissipation unit ;
A slit-shaped opening corresponding to the light source unit is provided on the lower surface of the housing,
The ventilation holes and the slit-like openings are arranged at positions orthogonal to the longitudinal direction of the fins of the heat radiating section,
The lighting device, wherein the power supply unit is arranged at a position orthogonal to the longitudinal direction of the slit-shaped opening . A pair of fixing holes for two-point fixing to the mounting surface is formed on the upper surface of the housing,
3. The lighting device according to claim 1 , wherein the center of gravity of said power supply unit is positioned on a line connecting the centers of said fixing holes.

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