JP2021166170A - Lighting apparatus, lighting system and manufacturing method of metal housing - Google Patents

Abstract

To provide a lighting device comprising a metal housing in which a power supply substrate can be accommodated and of which the production is facilitated, a system and a manufacturing method of the metal housing.SOLUTION: The lighting device comprises: a long lighting substrate 18 in which a light-emitting element 18a is mounted at a front face side; a power supply substrate which is shorter than the lighting substrate and disposed so as to overlap a rear face side of an end of the lighting substrate; and a long metal housing in which the lighting substrate and the power supply substrate are accommodated and which includes first and second pipe parts in which a heat exchange fluid flows. The metal housing includes: a first region in which a portion of the lighting substrate not to be overlapped with the power supply substrate is accommodated; a second region in which the other portion of the lighting substrate and the power supply substrate are accommodated; a first connection part protruding in an end at an opposite side of the second region coaxially in the same shape as the first pipe part; and a second connection part protruding in an end at an opposite side of the first region coaxially in the same shape as the second pipe part. The metal housing is formed by shearing an extrusion member having a cross-sectional shape of the first region while using a press mold.SELECTED DRAWING: Figure 3

Description

The present invention relates to a lighting device used in a plant growing factory or the like, a lighting system, and a method for manufacturing a metal housing used therein.

Conventionally, as disclosed in FIG. 11 of Patent Document 1, for example, a lighting device used for a seedling growing device, on a long printed circuit board on which a light emitting diode is mounted on the lower surface, and on the upper surface of the printed circuit board. There was a lighting device provided with a cooling water circulation passage and a heat transfer member arranged in contact with each other, and a cover frame having a U-shaped cross section for accommodating each of the above members inside. The cover frame has a structure in which the lower side is released and both end portions of the printed circuit board are held by holding portions provided inside the pair of side surfaces, and the light of the light emitting diode passes through the open portion of the cover frame. The plants below are irradiated. The heat dissipation of the light emitting diode is mainly performed through the cooling water circulation passage and the heat transfer member. In addition, Patent Document 1 describes that a lighting system and a heating / cooling system can be configured by using one or more of these lighting devices.

Further, as disclosed in Patent Document 2, a lighting device (lighting fixture) used in a plant growing factory, a light source unit equipped with a light emitting diode, and a long aluminum substrate accommodating the light source unit. There was a lighting device equipped with. The substrate has a sun-shaped cross section in which the left and right side plates are connected by three cross beams, a fluid supply pipe is integrally formed between the upper cross beam and the middle cross beam, and the lower cross beam is along the length direction. The central part is open. The light source portion is housed so as to abut on the lower surface of the middle cross beam of the substrate, and the light of the light emitting diode or the like is irradiated to the lower plant through the open portion of the lower cross beam. The heat dissipation of the light emitting diode is carried out through the entire substrate including the fluid supply tube. In addition, Patent Document 2 describes that a lighting system (lighting device) can be configured by using one or more of these lighting devices.

Japanese Unexamined Patent Publication No. 2016-214153 Japanese Unexamined Patent Publication No. 2009-289504

When a light emitting diode or the like is made to emit light statically, a DC voltage is generally used. Therefore, when using a commercial AC power supply distributed to a plant growing factory or the like, an AC-DC converter or the like that converts an AC voltage into a DC voltage is required. The lighting devices of Patent Documents 1 and 2 do not have an AC-DC converter or the like built-in. Therefore, when configuring a lighting system using a plurality of lighting devices, a power supply device (AC-DC converter, etc.) having a power capacity corresponding to the number of lighting devices is prepared, and the power supply device is directed toward each lighting device. It will supply DC voltage. Then, when the scale of the lighting system is changed after that, the optimum power supply device must be prepared each time considering the efficiency of energy consumption.

The above problems can be solved if each lighting device has a built-in power supply board (board on which an AC-DC converter or the like is mounted) having a power capacity equivalent to that of one unit. Therefore, it is preferable that this type of lighting device has a structure in which a power supply board can be incorporated.

Further, in the lighting device of Patent Document 1, since the cooling water circulation passage, the heat transfer member, and the cover frame are separate members, it takes time to assemble and the heat dissipation effect is not sufficient.

In the lighting device of Patent Document 2, a fluid supply tube is integrally formed inside the substrate, and the entire substrate contributes to heat dissipation of the light emitting diode, so that a heat dissipation effect superior to that of the structure of Patent Document 1 can be obtained. However, there is a problem that it takes a lot of man-hours to manufacture the substrate. The main body of this substrate (cylindrical part and liquid supply pipe part) can use the extruded shape as it is, but in order to connect the hose that supplies or discharges the liquid, two connecting pipes are prepared separately. , The work of attaching to both ends of the liquid supply pipe must be performed. Further, in order to provide a space for accommodating the power supply substrate inside the substrate, a large number of troublesome post-processings are required for the extruded shape material.

The present invention has been made in view of the above background technology, and provides a lighting device and a lighting system having a metal housing that can accommodate a power supply substrate inside and is easy to manufacture, and a method for manufacturing the metal housing. The purpose is to provide.

The present invention includes a lighting substrate on which a light emitting element is mounted on the front surface side, a power supply board which is arranged so as to overlap the back surface side of an end portion of the lighting substrate and supplies power for operation to the light emitting element, and the lighting substrate. It is a lighting device including a long metal housing for accommodating the power supply board inside.

The metal housing is a region of the lighting substrate that accommodates a portion of the lighting substrate that does not overlap with the power supply substrate, and includes a first region having a uniform cross-sectional shape perpendicular to the length direction and the lighting substrate. It is a region for accommodating the other portion and the power supply board, and has a second region having a uniform cross-sectional shape perpendicular to the length direction. The first region is a first plate-shaped main body that surrounds the back surface side and the side surface of the lighting substrate and is provided so as to open the front surface side of the lighting substrate, and a portion through which a heat exchange fluid flows inside. A first pipe portion integrally formed with the first plate-shaped main body and both tip portions in the width direction of the first plate-shaped main body are provided to support both end portions in the width direction of the lighting substrate. It has a pair of first lighting substrate supports. The second region includes a second plate-shaped main body formed continuously at one end of the first plate-shaped main body so as to extend the first plate-shaped main body in the length direction, and the first pipe portion. A second pipe portion continuously formed at one end so as to extend the first pipe portion in the length direction, and a first lighting substrate support portion having a length at one end portion of the first lighting substrate support portion. It has a second lighting substrate support that is continuously formed so as to extend in the direction.

Further, in the metal housing, a first connecting portion having the same shape as the first pipe portion and projecting coaxially is continuously formed at an end portion of the first pipe portion opposite to the second region. At the end of the second pipe portion on the side opposite to the first region, a second connecting portion having the same shape as the second pipe portion and projecting coaxially is continuously formed.

When the cross section of the first region is viewed at right angles to the length direction, the first pipe portion is arranged at a position in the middle of dividing the first plate-shaped main body, and the first plate-shaped main body is divided. The boundary portion with the first pipe portion extends in the normal direction from the surface of the first pipe portion.

The first and second pipe portions of the metal housing are provided so as to be arranged on the back surface side of the lighting substrate and the power supply substrate in an assembled state. Alternatively, the first and second pipe portions of the metal housing are provided so as to be arranged on the side of the lighting board and the power supply board in an assembled state. Further, it is preferable that the first plate-shaped main body of the metal housing is provided with a thin-walled portion at or near the boundary portion with the first pipe portion.

Further, the metal housing is provided with a resin housing that covers the entire outer surface of the first and second regions of the metal housing and caps that close both ends of the resin housing in the length direction. The first region is provided with a first screw receiving portion for screw-fixing the cap, and the second region is provided with a second screw receiving portion for screw-fixing the cap. The first screw receiving portion is provided integrally with the first plate-shaped main body or the first pipe portion, and the second screw receiving portion is provided at one end of the first screw receiving portion with the first screw receiving portion. Can be continuously formed so as to extend in the length direction.

The first region of the metal housing has a fin portion extending in a direction in which the lighting substrate is arranged from the surface of the first plate-shaped main body or the first pipe portion, and the first region thereof. When looking at a cross section of one region perpendicular to the length direction, the base end portion of the fin portion extends in the normal direction from the surface of the first plate-shaped main body or the first pipe portion. It may be configured to have. In this case, it is preferable that the fin portion of the metal housing is provided with a thin-walled portion at or near the base end portion.

Further, the present invention is a lighting system using one or more of the lighting devices, and is a lighting system that dissipates heat from the light emitting element by flowing the heat exchange fluid through the first and second pipe portions. ..

Further, the present invention is a method for manufacturing the metal housing of the lighting device, in which an extruded die having a cross-sectional shape of the first region and having a predetermined length is produced, and then the extruded die is used. This is a method for manufacturing a metal housing that forms the second region, the first connecting portion, and the second connecting portion by performing shearing using a press die.

Since the lighting device of the present invention has a built-in power supply board that supplies power for operation to the light emitting element, the lighting system used in a plant growing factory or the like can be easily and freely configured, and energy saving is also achieved. be able to.

Further, the metal housing of the lighting device is one member integrally formed, and by using the method for manufacturing the metal housing of the present invention, it can be easily manufactured without much labor.

It is a front view which shows the plant growing apparatus which incorporated the 1st Embodiment of the lighting apparatus and lighting system of this invention. It is a figure which shows the lighting apparatus of 1st Embodiment, and is the front view (a) which shows the appearance of the apparatus, the front view (b) which shows the internal structure which see through the metal housing, and the bottom view which shows the appearance of an apparatus (a). c). It is a figure which shows the lighting apparatus of 1st Embodiment, and is the right side view (a), A1-A1 sectional view (b), A2-A2 sectional view (c) which shows the appearance of the apparatus. It is a figure which shows the lighting apparatus of the 2nd Embodiment of this invention, the front view (a) which shows the appearance of the apparatus, the front view (b) which shows the internal structure which see through the resin housing and the metal housing, and the apparatus. It is a bottom view (c) which shows the appearance of. It is a figure which shows the lighting apparatus of 2nd Embodiment, and is the right side view (a), B1-B1 sectional view (b), and B2-B2 sectional view (c) which show the appearance of the apparatus.

Hereinafter, the first embodiment of the lighting device and lighting system of the present invention and the method for manufacturing a metal housing will be described with reference to FIGS. 1 to 3. The plant growing device 10 shown in FIG. 1 is composed of a plant cultivation rack 12 and a lighting system 16 using the lighting device 14 (14 (1), 14 (2)) of this embodiment. The plant cultivation rack 12 has two cultivation shelves 12a (1) and 12a (2) fixed at intervals above and below, and the plant S is placed on the cultivation shelves 12a (1) and 12a (2). Cultivated. The lighting device 14 (1) is installed above the cultivation shelf 12a (1) and irradiates light downward toward the plant S on the cultivation shelf 12a (1), and the lighting device 14 (2) is cultivated. It is installed above the shelves 12a (2) and irradiates downward light toward the plant S on the cultivation shelves 12a (2).

As shown in FIGS. 2 and 3, the lighting device 14 includes a lighting board 18, a power supply board 20 that supplies power for operation to the lighting board 18, and a metal housing that houses the lighting board 18 and the power supply board 20 inside. It has 22 and. The lighting substrate 18 is a substantially rectangular long substrate on which a light emitting element 18a composed of a plurality of LEDs is mounted on the surface side. The power supply board 20 is a substantially square board in which AC-DC converter circuits are mounted on the front surface and the back surface side, the length is shorter than that of the lighting board 18, and the width is substantially the same as that of the lighting board 18. The power supply boards 20 are installed so as to overlap each other on the back surface side of the end portion of the lighting board 18, and are wired to each other using a cable (not shown). The power cable 20a extending from the power supply board 20 is a cable for supplying a commercial AC voltage to the power supply board 20.

The metal housing 22 is a long member made of a metal having high thermal conductivity such as aluminum, and includes a first region 24 (1) of the lighting substrate 18 for accommodating a portion where the power supply substrate 20 does not overlap. It has a second region 24 (2) that accommodates the other portion of the lighting substrate 18 and the power supply substrate 20. The first region 24 (1) has a uniform cross-sectional shape perpendicular to the length direction, and the second region 24 (2) also has a single cross-sectional shape perpendicular to the length direction. It looks like.

As shown in FIG. 3B, the first region 24 (1) has a U-shaped cross section provided so as to surround the back surface side and the side surface of the illumination substrate 18 and open the front surface side of the illumination substrate 18. It has a first plate-shaped main body 26 (1) and a first pipe portion 28 (1) for flowing a heat exchange fluid inside. The first pipe portion 28 (1) is a position in the middle of dividing the first plate-shaped main body 26 (1) into two, and is arranged on the back surface side of the lighting substrate 18 in a state of being assembled in the lighting device 14. It is provided integrally at the position. The boundary portion of the first plate-shaped main body 26 (1) with the first pipe portion 28 (1) extends substantially in the normal direction from the surface of the first pipe portion 28 (1), and the thin portion 30 extends in this portion. Is provided.

On the surface of the first pipe portion 28 (1), two fin portions 32 extending in the direction in which the lighting substrate 18 is arranged are provided. The base end portion of the fin portion 32 extends in the normal direction from the surface of the first pipe portion 28 (1), and a thin-walled portion 30 is provided in this portion. Further, a pair of first lighting substrate support portions 34 (1) for supporting both side ends in the width direction of the illumination substrate 18 are provided at both tip portions in the width direction of the first plate-shaped main body 26 (1). ..

As shown in FIG. 3C, the second region 24 (2) includes the second plate-shaped main body 26 (2), the second pipe portion 28 (2), and the second lighting substrate support portion 34 (2). Have. The second plate-shaped main body 26 (2) is continuously formed at one end of the first plate-shaped main body 26 (1) so as to extend the first plate-shaped main body 26 (1) in the length direction. Similarly, the second pipe portion 28 (2) is continuously formed at one end of the first pipe portion 28 (1) so as to extend the first pipe portion 28 (1) in the length direction. Similarly, the second lighting board support portion 34 (2) is continuously formed at one end of the first lighting board support portion 34 (1) so as to extend the first lighting board support portion 34 (1) in the length direction. Has been done.

Further, the metal housing 22 projects coaxially with the first pipe portion 28 (1) at the end opposite to the second region 24 (2) in the same shape as the first pipe portion 28 (1). One connecting portion 36 (1) is continuously formed. Similarly, at the end of the second pipe portion 28 (2) opposite to the first region 24 (1), a second connecting portion 36 having the same shape as the second pipe portion 28 (2) and projecting coaxially. (2) is continuously formed.

When manufacturing the metal housing 22, first, a long extruded shape having the cross-sectional shape of the first region 24 (1) is made and cut to a predetermined length. Then, by shearing the extruded shape material of a predetermined length using a press die, the second region 24 (2), the first connecting portion 36 (1) and the second connecting portion 36 (2) are formed. To form. Since the cross-sectional shape of the second region 24 (2) is a shape obtained by cutting the fin portion 32 from the first region 24 (1), it can be easily formed by removing the portion where the fin portion 32 is extended. Can be done. Further, since the first connecting portion 36 (1) is an extension of the first pipe portion 28 (1), the first plate-shaped main body 26 (1), the fin portion 32, and the first lighting substrate support portion 34 (1) Can be easily formed by removing the extended portion. Similarly, since the second connecting portion 36 (2) is an extension of the second pipe portion 28 (2), the second plate-shaped main body 26 (2), the fin portion 32, and the second lighting substrate support portion 34 (2). ) Can be easily formed by removing the extended portion.

When shearing the boundary part of the plate-shaped body with the pipe part, the punch and die of the press die must be set in the narrow space on the front side and the back side of the boundary part of the plate-shaped body. It is easy to set because it extends in the normal direction from the surface of the pipe part. Further, since the thin-walled portion 30 is provided at the boundary portion of the plate-shaped main body, the thin-walled portion 30 can be easily sheared.

When shearing the base end portion (boundary portion with the pipe portion) of the fin portion 32, set the punch and die of the press die in a narrow space on the front side and the back side of the base end portion of the fin portion 32. It must be done, but it is easy to set because the base end portion of the fin portion 32 extends in the normal direction from the surface of the pipe portion. Further, since the thin-walled portion 30 is provided at the boundary portion of the plate-shaped main body, the thin-walled portion 30 can be easily sheared.

When assembling the lighting device 14, the lighting board 18, the power supply board 20, and the metal housing 22 are prepared, the lighting board 18 and the power supply board 20 are set inside the metal housing 22, and they are mutually used by using a sealing material or the like. When fixed to, the assembly of the lighting device 14 is completed. When two lighting devices 14 (1) and 14 (2) are manufactured, they are installed at predetermined positions of the plant cultivation rack 12, and as shown in FIG. 1, the first and second connecting portions 36 (1) are installed. When the hose 38 through which the heat exchange fluid flows is connected to 36 (2), the assembly of the lighting system 16 and the plant growing device 10 is completed.

When the power of the lighting system 16 is turned on, the power source for operation is supplied from the power supply board 20 to the light emitting element 18a, and the light emitting element 18a irradiates the plant S with light. The heat generated by the light emitting element 18a is transmitted to each part of the metal housing 22 through the air on the back surface side of the lighting substrate 18, and is efficiently transferred to the heat exchange fluid flowing through the first and second pipe parts 28 (1) and 28 (2). Since it is absorbed, the heat generated by the light emitting element 18a can be effectively dissipated.

As described above, since the lighting device 14 has a built-in power supply board 20 that supplies power for operation to the light emitting element 18a, the lighting system 16 used in the plant growing factory can be easily and freely configured. It can also save energy.

Further, the metal housing 22 of the lighting device 14 is one member integrally formed, and after producing an extruded profile having a predetermined length, a specific portion is sheared using a press die. , Can be easily manufactured without much effort. Further, versions having different lengths of the first region 24 (1) and the second region 24 (2) can be easily manufactured from the same extruded profile.

Next, a second embodiment of the lighting device of the present invention will be described with reference to FIGS. 4 and 5. Here, the same configurations as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. The lighting device 40 of this embodiment has the same function as the lighting device 14 described above, and can be used in place of the lighting device 14 of the plant growing device 10 shown in FIG.

As shown in FIGS. 4 and 5, the lighting device 40 includes the above-mentioned lighting board 18 and power supply board 20, a metal housing 42 accommodating the lighting board 18 and the power supply board 20 inside, and a metal housing 42 inside. It is provided with a tubular resin housing 44 for accommodating the resin housing 44, and caps 46 (1) and 46 (2) for closing the openings at both ends of the resin housing 44 in the length direction.

The metal housing 42 is a long member made of a metal having high thermal conductivity such as aluminum, and similarly to the metal housing 22 described above, accommodates a portion of the lighting substrate 18 where the power supply substrate 20 does not overlap. It has a first region 24 (1) and a second region 24 (2) that accommodates the other portion of the lighting substrate 18 and the power supply substrate 20. The major difference from the metal housing 22 is that the arrangement of the first and second pipe portions 28 (1) and 28 (2) with respect to the first and second plate-shaped members 26 (1) and 26 (2) has been changed. It is a point.

In the case of the metal housing 42, the first and second pipe portions 28 (1) and 28 (2) are in the process of dividing the first and second plate-shaped main bodies 26 (1) and 26 (2) into two. It is a position, and is characterized in that it is integrally provided at a position arranged on the side of the lighting board 18 and the power supply board 20 in a state of being assembled in the lighting device 40. However, the boundary portion of the first plate-shaped main body 26 (1) with the first pipe portion 28 (1) extends substantially in the normal direction from the surface of the first pipe portion 28 (1), and a thin wall is formed in this portion. It is the same as the metal housing 22 in that the portion 30 is provided.

Further, since the positions of the first and second pipe portions 28 (1) and 28 (2) have been changed, the two fin portions 32 extend from the surface of the first plate-shaped main body 26 (1). .. Similar to the metal housing 22, the base end portion of the fin portion 32 extends from the surface of the first plate-shaped main body 26 (1) in the normal direction, and the thin-walled portion 30 is provided in this portion. ..

In addition, in the case of the metal housing 42, the first region 24 (1) is provided with the first screw receiving portion 48 (1) for screwing the cap 46 (1), and the second region 24 (1) ( A second screw receiving portion 48 (2) for fixing the cap 46 (2) with a screw is attached to 2). The first screw receiving portion 48 (1) is integrally provided in the vicinity of the fin portion 32 of the first plate-shaped main body 26 (1), and the second screw receiving portion 48 (2) is the first screw receiving portion 48 (1). ), The first screw receiving portion 48 (1) is continuously formed so as to extend in the length direction.

In the metal housing 42, the positions of the first and second pipe portions 28 (1) and 28 (2) are changed to positions that do not overlap with the lighting board 18 and the power supply board 20, so that the thickness of the metal housing 22 is increased. It has the feature that it can be made thinner. Further, it can be manufactured by the same method as the metal housing 22.

The resin housing 44 is composed of a cylindrical main body 44a and a transparent cover 44b. The tubular main body 44a has a size that covers the entire outer surface of the first and second regions 24 (1) and 24 (2) of the metal housing 42, and as shown in FIGS. 5 (b) and 5 (c), the tubular main body 44a has a size that covers the entire outer surface. The lower part is opened so as not to block the irradiation light of the light emitting element 18a, and the transparent cover 44b is attached here.

As shown in FIG. 5A, the cap 46 (2) has a through hole 50 through which the second connecting portion 36 (2) can be inserted and a second screw receiving portion 48 (2) inside the plate-shaped main body. ) Is provided with a through hole 54 for inserting the screw 52 and a notch 56 for guiding and passing the power cable 20a. The cap 46 (1) on the opposite side has a symmetrical shape with the cap 46 (2).

When assembling the lighting device 40, the lighting board 18, the power supply board 20, the metal housing 42, the resin housing 44, and the caps 46 (1) and 46 (2) are prepared, and the lighting board 18 and the power supply board 20 are first assembled. It is set inside the metal housing 42 and fixed to each other using a sealing material or the like. Then, the resin housing 44 is attached to the outside of the metal housing 42, and the caps 46 (1) and 46 (2) are applied to the openings at both ends of the resin housing 44 and fixed with screws to complete the assembly.

According to the lighting device 40, the same effect as that of the lighting device 14 described above can be obtained, and further, since the resin housing 44 is provided, the effect of preventing moisture from the lighting board 18 and the power supply board 20 can also be obtained.

Further, in the plant growing device having the structure shown in FIG. 1, when the number of stages of the cultivation shelf is increased, the thickness of the lighting device is preferably as thin as possible so that the height of the growing device can be suppressed. In this respect, although the lighting device 40 includes the resin housing 44 that the lighting device 14 does not have, the thickness of the metal housing 42 is thin, so that the thickness of the entire device can be suppressed to the same level as that of the lighting device 14. .. Further, if the resin housing 44 is removed, the shape can be further reduced.

The method for manufacturing the lighting device, the lighting system, and the metal housing of the present invention is not limited to the above embodiment. For example, in the case of the above-mentioned lighting devices 14 and 40, the first and second pipe portions 28 (1) and 28 (2) included in the metal housings 22 and 42 are the first and second plate-shaped main bodies 26 (1). , 26 (2) are provided at only one place in the middle of division, but may be provided at a plurality of places for the purpose of improving the heat dissipation effect. Further, the fin portion 32 is a member for facilitating heat transfer of the lighting substrate 18 to the heat exchange fluids in the first and second pipe portions 28 (1) and 28 (2), and has a shape, number, and arrangement. Can be changed as appropriate, and may be omitted if not necessary.

It was explained that the boundary portion of the first plate-shaped main body 26 (1) with the first pipe portion 28 (1) extends in the normal direction from the surface of the first pipe portion 28 (1). The purpose of this is to facilitate shearing using a press die, and it is sufficient that the shearing process is extended in a direction of approximately 90 degrees. The same applies to the extending direction of the base end portion of the fin portion 32.

Further, the structure of the first and second lighting board support portions 34 (1) and 34 (2) is simple assuming that the lighting board 18 and the power supply board 20 are mutually fixed with a sealing material or the like at the time of assembly. Although it has a structure, this structure is just an example. For example, in order to omit the work of applying a sealing material or the like, the structure is changed to a structure in which the ends of the lighting board 18 and the power supply board 20 are fitted and held. You may.

In addition, the configuration of the lighting board (length of the printed wiring board, number of light emitting elements, etc.) and the configuration of the power supply board (length of the printed wiring board, type of power supply circuit, etc.) are not particularly limited and can be set freely. Can be done.

The lighting system 16 shown in FIG. 1 has a configuration in which two lighting devices 14 are arranged one above the other and connected in series by a hose 38 to allow a fluid for heat exchange to flow, but the arrangement and number of lighting devices can be freely arranged. It can be changed to, and each luminaire may be connected in parallel with a hose. Further, in FIG. 1, a pump, a control device, and the like for sending a heat exchange fluid are omitted, but the configuration of this portion is not particularly limited. For example, it is possible to make a circulation type system in which the heat generated by the light emitting element is absorbed by the heat exchange fluid, and then the heat of the heat exchange fluid is taken out by the heat exchanger and sent to the lighting device again.

Further, the press die used in the method for manufacturing the metal housing of the present invention may be a die for shearing, and the shapes of the punch and the die can be freely adjusted according to the structure of the metal housing to be machined. The configuration of the drive mechanism is not particularly limited.

14, 14 (1), 14 (2), 40 Lighting device 16 Lighting system 18 Lighting board 18a Light emitting element 20 Power supply board 22, 42 Metal housing 24 (1) First area 24 (2) Second area 26 (1) First plate-shaped main body 26 (2) Second plate-shaped main body 28 (1) First pipe portion 28 (2) Second pipe portion 30 Thin-walled portion 32 Fin portion 34 (1) First lighting substrate support portion 34 (2) Second lighting board support part 36 (1) First connection part 36 (2) Second connection part 44 Resin housing 46 (1), 46 (2) Cap 48 (1) First screw receiving part 48 ( 2) Second screw receiver

Claims (9)

A lighting board on which a light emitting element is mounted on the front surface side, a power supply board which is arranged so as to overlap the back surface side of an end portion of the lighting board and supplies power for operation to the light emitting element, the lighting board, and the power supply board. Equipped with a long metal housing that houses the inside,
The metal housing is a region of the lighting substrate that accommodates a portion of the lighting substrate that does not overlap with the power supply substrate, and includes a first region having a uniform cross-sectional shape perpendicular to the length direction and the lighting substrate. A region that accommodates the other portion and the power supply board, and has a second region having a uniform cross-sectional shape perpendicular to the length direction.
The first region is a first plate-shaped main body provided so as to surround the back surface side and the side surface of the lighting substrate and open the front surface side of the lighting substrate, and a portion through which a heat exchange fluid flows inside. A first pipe portion integrally formed with the first plate-shaped main body and both tip portions in the width direction of the first plate-shaped main body are provided to support both end portions in the width direction of the lighting substrate. It has a pair of first lighting substrate supports and
The second region includes a second plate-shaped main body formed continuously at one end of the first plate-shaped main body so as to extend the first plate-shaped main body in the length direction, and the first pipe portion. A second pipe portion continuously formed at one end so as to extend the first pipe portion in the length direction, and a first lighting substrate support portion having a length at one end portion of the first lighting substrate support portion. It has a second lighting substrate support that is continuously formed so as to extend in the direction.
In the metal housing, a first connecting portion having the same shape as the first pipe portion and projecting coaxially is continuously formed at an end portion of the first pipe portion on the opposite side of the second region. At the end of the two pipe portions on the side opposite to the first region, a second connecting portion having the same shape as the second pipe portion and projecting coaxially is continuously formed.
When the cross section of the first region is viewed at right angles to the length direction, the first pipe portion is arranged at a position in the middle of dividing the first plate-shaped main body, and the first plate-shaped main body is divided. The lighting device, wherein the boundary portion with the first pipe portion extends in the normal direction from the surface of the first pipe portion. The lighting device according to claim 1, wherein the first and second pipe portions of the metal housing are provided so as to be arranged on the back surface side of the lighting board and the power supply board in an assembled state. The lighting device according to claim 1, wherein the first and second pipe portions of the metal housing are provided so as to be arranged on the side of the lighting board and the power supply board in an assembled state. The lighting device according to any one of claims 1 to 3, wherein the first plate-shaped main body of the metal housing is provided with a thin-walled portion at or near a boundary portion with the first pipe portion. A resin housing that covers the entire outer surface of the first and second regions of the metal housing and caps that close both ends of the resin housing in the length direction are provided.
The first region of the metal housing has a first screw receiving portion for fixing the cap with screws, and the second region has a second screw receiving portion for fixing the cap with screws. The first screw receiving portion is provided integrally with the first plate-shaped main body or the first pipe portion, and the second screw receiving portion is provided at one end of the first screw receiving portion. The lighting device according to any one of claims 1 to 4, wherein the first screw receiving portion is continuously formed so as to extend in the length direction. The first region of the metal housing has a fin portion extending in the direction in which the lighting substrate is arranged from the surface of the first plate-shaped main body or the first pipe portion.
When the cross section of the first region perpendicular to the length direction is viewed, the base end portion of the fin portion extends in the normal direction from the surface of the first plate-shaped main body or the first pipe portion. The lighting device according to any one of claims 1 to 5. The lighting device according to claim 6, wherein the fin portion of the metal housing is provided with a thin-walled portion at or near the base end portion. A lighting system using one or more of the lighting devices according to any one of claims 1 to 7, wherein the light emitting element is dissipated by flowing the heat exchange fluid through the first and second pipe portions. Lighting system featuring. The method for manufacturing the metal housing included in the lighting device according to any one of claims 1 to 7.
After producing an extruded profile having a predetermined length having a cross-sectional shape of the first region,
A method for manufacturing a metal housing, which comprises forming the second region, the first connecting portion, and the second connecting portion by shearing the extruded shape material using a press die.

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