JP2019197637A - Lighting fixture - Google Patents

Abstract

To provide a lighting fixture that has a reduced weight and is easy to produce.SOLUTION: A fine recess formed on the surface of an aluminum base 11 composed of an aluminum extrusion mold material, constituting a body back part of a lighting fixture 1, is engaged with a resin of a resin cabinet 13 composed of a resin mold material by injection molding, constituting the main body side face part, and the metal material and resin are integrated. Thus, the aluminum base 11 and the resin cabinet 13 are joined together by strong force.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lighting fixture that is installed and used in, for example, a tunnel.

  In recent years, light emitting diodes (LEDs) have been used as light sources in various fields from the viewpoint of low power consumption, long life, and the like. An LED is frequently used as a light source in lighting fixtures and the like.

  Conventionally, when a metal and a resin (for example, an aluminum molded plate and a synthetic resin molded body) are integrally joined in a process of manufacturing a main body of a lighting fixture or the like, they are mechanically joined by an adhesive, screwing, or the like. Was common.

  Patent Document 1 discloses a lighting fixture with a built-in LED light-emitting device, which uses a component integrally formed of metal and resin to improve heat dissipation and safety, and is low-cost and highly reliable. Yes. Patent Document 2 discloses an LED tunnel lighting fixture that is made of a metal body such as stainless steel and has a corrosion resistance and the like and is formed by press molding or the like.

Japanese Patent No. 5945246 Japanese Patent No. 5482308

  The insert molding method disclosed in Patent Document 1 is a resin injection molding method in which a resin is injected around a metal part inserted into a mold and the metal and the resin are integrated. In the method of integrating a metal and a resin using, a slight gap is generated at the interface between the metal and the resin.

  Therefore, there is a problem that insert molding cannot be applied to a product (apparatus body) that is installed outdoors and requires airtightness. Moreover, the product by insert molding also has the problem that it lacks strength and waterproofness and is difficult to reduce in weight.

  This invention is made | formed in view of the subject mentioned above, The place made into the objective is providing the lighting fixture which can be reduced in weight and is easy to manufacture.

  The following configuration is provided as means for achieving the above object and solving the above-described problems. That is, the lighting fixture of the present invention includes a main body in which a plurality of LED elements are incorporated as a light source, and a cover portion that is arranged so as to cover the front surface portion of the main body and is partially configured by a translucent member. The back surface portion is formed of a casing made of an aluminum extrusion molding material, and the side surface portion is formed of a resin molding material, and heat generated from the plurality of LED elements is conducted to the back surface portion.

  For example, the aluminum extrusion molding material and the resin molding material are integrally formed by joining a part of the resin molding material in a state where the resin molding material bites into a micropore formed on the surface of the aluminum extrusion molding material. The back portion and the side portion are integrally formed. For example, the back surface portion includes a first region and a second region that extends from the first region and is formed to recede from the first region toward the back side of the main body. A substrate on which the plurality of LED elements are arranged is mounted on the surface of the first region, and heat dissipating fins are formed on the back surface of the first region, and the plurality of the plurality of LED elements are formed on the second region. The drive power supply of the LED element is accommodated.

  For example, the main body has a beam-like member that is bridged between the opposite side portions of the side portion and is integrally formed with the side portion, and is integrally formed with the beam-like member and is normal to the first region. The board and the driving power source are fixed to a locking projection protruding to the side. Further, for example, the beam-like member is integrally formed with the back surface portion while being fitted with a groove portion formed on the upper surface of the back surface portion. For example, the groove has a trapezoidal cross-sectional shape. Furthermore, for example, the substrate on which the plurality of LED light sources are mounted is in close contact with the back surface portion in the first region.

  ADVANTAGE OF THE INVENTION According to this invention, a metal material and resin can be integrated and weight-reduced, it can manufacture easily and can provide the lighting fixture suitable for special use environments, such as a tunnel.

It is an external appearance perspective view of the lighting fixture which concerns on embodiment of this invention. It is a disassembled perspective view of the lighting fixture which concerns on this embodiment. It is an external appearance perspective view of the main body housing | casing which integrally molded the aluminum base and the resin housing | casing. It is sectional drawing which cut | disconnected the main body housing | casing of FIG. 3 in the vertical direction along the XX 'arrow line. 5A is an external perspective view of the resin rivet, and FIG. 5B is a cross-sectional view of the resin rivet cut in the vertical direction along the line YY ′ in FIG. 5A. It is sectional drawing of the waterproof packing attached to the peripheral part of a front cover. It is sectional drawing which shows the integral joining state of the edge part of the aluminum base which concerns on a modification, and the inner edge part of the resin housing | casing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an external perspective view of a lighting fixture according to the present embodiment, and shows a state when installed on a tunnel wall or the like. In FIG. 1, the A direction is the road side and the B direction is the wall side, and the illustration of the fixing bracket for fixing the luminaire 1 to the wall surface is omitted. FIG. 2 is an exploded perspective view of the lighting fixture according to the present embodiment.

  As shown in FIG. 1 and the like, a lighting fixture 1 according to this embodiment includes a fixture main body 20 located on the back side (wall side at the time of installation) of the fixture, and a front side of the lighting fixture 1 (a side on which illumination light is irradiated). The cover part 10 which covers the instrument main body 20 is provided. The instrument body 20 is configured by a casing in which a resin casing 13 made of an SPS resin, which is a crystalline resin and a thermoplastic resin, is integrally formed with an aluminum base 11 formed by extruding a metal material such as aluminum. .

  The cover unit 10 includes a front cover 16, a front cover retainer 17, and the like. The front cover 16 is a transparent plate-like member having a size substantially the same as the front portion of the instrument body 20 and made of acrylic resin or the like and having a thickness of several millimeters. The surface of the front cover 16 is subjected to a hard coat process for protection from scratches and the like.

  A waterproof packing 14 is attached to the periphery of the front cover 16. The waterproof packing 14 is made of, for example, solid silicon rubber (hardness 40), and has two ribs 14a to 14d that run in parallel over the entire circumference of the upper and lower surfaces as shown in FIG. Yes.

  By fixing the front cover retainer 17 to the resin casing 13, a compressive force is applied to the waterproof packing 14 attached to the peripheral edge portion of the front cover 16, whereby the upper and lower ribs of the waterproof packing 14 are crushed and deformed. . As a result, the adhesion between the front cover holder 17 and the frame portion of the resin casing 13 and the frame portion of the front cover 16 is improved, and a waterproof effect can be obtained.

  That is, resin rivets (resin pins) are provided on the back surface of the peripheral frame of the front cover retainer 17 at positions corresponding to a plurality of holes provided in the peripheral frame portion of the resin housing 13 (not shown in FIG. 2). ). By inserting the plurality of resin rivets in alignment with the plurality of holes provided in the peripheral frame of the resin casing 13, the peripheral edge of the front cover 16 is arranged around the resin casing 13 with the waterproof packing 14 interposed therebetween. Pressed against the frame.

  In addition, in the center part of the frame part on both sides of the front cover presser 17, for safety reasons such as drop prevention, holes 17 a for inserting the fall prevention screws 18 a and 18 b of the front cover presser 17 are provided. 17b is provided.

  As shown in FIG. 2, the aluminum base 11 includes a radiating fin portion 33 and a power supply mounting portion 35. The LED module 21 is mounted on the front surface of the heat radiating fin portion 33, and the back surface extends along the short side direction (y direction) of the aluminum base 11 and is arranged at substantially equal intervals in the longitudinal direction (x direction). A plurality of heat radiation fins 12 are formed. The LED module 21 is configured such that a plurality of LED elements are arranged vertically and horizontally at predetermined intervals, and uniform illumination light can be obtained over a wide range by adjusting the mounting angle.

  The power supply mounting portion 35 extends in the x direction from the radiating fin portion 33, has a shape protruding downward in the z direction with respect to the plane portion of the radiating fin portion 33, and has a substantially rectangular parallelepiped LED drive The power supply 15 is placed and has a capacity that can be accommodated.

  Next, a method for integrally forming the aluminum base 11 and the resin casing 13 in the lighting fixture 1 according to the present embodiment will be described. First, the surface of the aluminum base 11 extruded as described above is treated with an alkaline solution or the like to form fine recesses (dimples) on the order of several tens of nm. Thereafter, the metal material and the resin are integrated by allowing the SPS resin of the resin casing 13 to enter these recesses by injection molding. Thereby, a strong bonding force between the aluminum base 11 and the resin casing 13 can be obtained.

  FIG. 3 is an external perspective view of a main body housing 30 in which the aluminum base 11 and the resin housing 13 are integrally formed. 4 is a cross-sectional view of the main body housing 30 of FIG. 3 cut in the vertical direction along the line XX ′. As shown in FIGS. 2 to 4, in the longitudinal direction (x direction) of the aluminum base 11 and the resin casing 13, the end portions 11 a and 11 b of the aluminum base 11 and the inner edges 13 a and 13 b of the resin casing 13 Are joined together in the manner described above. Further, in the short direction (y direction) of the aluminum base 11 and the resin casing 13, the edges 13 c and 13 d of the resin casing 13 are on the lower side, and the edges 11 c and 11 d of the aluminum base 11 are on the upper side. Each is integrally joined by the method described above.

  Further, as shown in FIG. 2 and the like, the main body housing 30 extends in a direction (short direction of the housing) orthogonal to the longitudinal wall portions 52 and 54 of the resin housing 13, and extends between the wall portions 52 and 54. It has the beam-like members 51a, 51b, 53a-53c which bridge. The beam-like members 51a and 51b are formed on the upper surface of the heat radiating fin portion 33 of the aluminum base 11, and are integrally joined to the aluminum base 11 in a state of being fitted to the grooves 41a and 41b extending in the short direction.

  Similarly, the beam-like members 53a to 53c are formed on the upper surface of the power supply mounting portion 35 of the aluminum base 11, and are integrated with the aluminum base 11 in a state of being fitted with the groove portions 43a to 43c extending in the short direction. Be joined.

  Furthermore, resin rivets 45a to 45h, which are resin pins for fixing the LED module 21, are integrally formed with the beam members 51a and 51b on the upper surfaces of the beam members 51a and 51b. The resin rivets 47a to 47d on the upper surfaces of the beam members 53a to 53c are resin pins that are integrally formed with the beam members 51a and 51b and fix the LED driving power source 15. Any of the above resin rivets protrudes from the upper surface of the beam-like member in the vertical direction (normal direction of the upper surface of the radiating fin portion 33).

  In FIG. 4, the cross-sectional shapes of the grooves 41a, 41b, and 43a to 43c are trapezoidal as shown in an enlarged circle in a broken circle. By adopting such a shape, when heat is applied from the outside to the beam-like members 51a, 51b, 53a to 53c made of thermoplastic resin and expanded, they are surrounded by the aluminum base 11 made of metal. Even if compressive stress is applied, it is possible to prevent the beam-like members 51a, 51b, 53a to 53c from coming off from the groove portions 41a, 41b, 43a to 43c which are joint portions therewith.

  2 to 4, a plurality of ribs L for reinforcing the housing are formed on the inner wall side of the resin housing 13. Further, the distance H (height in the z direction) H between the upper surface of the radiating fin portion 33 and the upper surface of the housing shown in FIG. 4 in the main body housing 30 is set so that the LED module 21 is close to the front cover 16. By doing so, there is no light blockage in the housing, and it is possible to optimize irradiation efficiency, light distribution, and the like from the plurality of LED elements arranged in the LED module 21 in pro-beam illumination or the like.

  FIG. 5 is a detailed view of resin rivets (resin pins) 45a to 45h and 47a to 47d formed on the upper surface of the beam-like member. 5A is an external perspective view of the resin rivet, and FIG. 5B is a cross-sectional view of the resin rivet cut in the vertical direction along the line YY ′ in FIG. 5A.

  As shown in FIG. 5A and the like, the resin rivet includes an umbrella portion 61 that extends downward (toward the beam-shaped member) and a base portion 63 that extends from the lower portion of the umbrella portion 61 to the beam-shaped member. The resin rivet umbrella portion 61 and the base portion 63 are formed with slits (cracks) 62 whose central portions are split in the vertical direction with a constant width. Therefore, the umbrella part 61 consists of umbrella members 61a and 61b, and the base 63 consists of base members 63a and 63b.

  When inserting resin rivets into holes provided in fixing objects (here, the LED module 21 and the LED drive power supply 15) fixed by the resin rivets 45a to 45h and 47a to 47d, the umbrella members 61a and 61b are shown in FIG. In (a), force is applied from both horizontal directions as indicated by white arrows. Therefore, the umbrella members 61a, 61b and the like are bent by the elastic function of the resin and close to each other, and the slit 62 having a slit width of, for example, about 1 mm is closed, thereby facilitating the passage of the fixed object.

  In the resin rivet, the diameter D1 of the umbrella portion 61 is larger than the diameter D2 of the base portion 63 at the joint portion between the umbrella portion 61 and the base portion 63. Therefore, the joint part with the base part 63 among the umbrella parts 61 forms a flange, and the fixed object once fitted to the base part 63 does not come off.

  Further, as shown in FIG. 5B, the resin rivet is provided with roundness at the lowermost peripheral edges 65 a and 65 b of the umbrella portion 61 and the roots 67 a and 67 b of the base portion 63. By attaching a radius in this way, it is possible to avoid problems such as breaking of the resin rivet even when stress is applied to the base of the resin rivet when a fixed object is attached to the resin rivet.

  Note that the mounting resin rivets formed on the rear surface of the frame portion of the resin cover 17 are the same as the resin rivets 45a to 45h and 47a to 47d described above, and therefore the description thereof is omitted here.

  About the diameter D1 (pin width) of the umbrella part 61 of a resin rivet, it is good also as a specification which changes a dimension according to a fixed object. For example, it may have a dimensional relationship of (resin rivet pin width for LED driving power source)> (resin rivet pin width for LED module)> (resin rivet pin width of resin cover). At that time, the diameter dimension D2 of the base 63 may be constant for any fixed object.

  As described above, the luminaire according to the present embodiment is the injection molding in which the side surface portion of the main body is formed in the fine concave portion formed on the surface of the aluminum base made of the aluminum extrusion molding material, which constitutes the back surface portion of the main body. Thus, the resin in the resin casing made of the resin molding material is bitten to integrate the metal material and the resin. Thereby, a strong bonding force between the aluminum base and the resin casing can be obtained.

  That is, in the main body housing of the lighting fixture, the parts requiring mechanical strength are made of metal, and the other parts are made of resin, and the metal material and the resin are bound at the part where these parts are in contact with each other. By joining and integrating in this state, it is possible to reduce the weight and height of the main body housing and eliminate waste of materials. In addition, manufacturing the aluminum base by aluminum extrusion makes it easy and inexpensive to manufacture.

  Therefore, the lightening of the entire body of the lighting fixture can be realized by reducing the weight of the main body casing. For example, when installing on a tunnel wall surface, the anchor strength is reduced due to the load reduction of the mounting portion of the lighting fixture. In addition to the reduction in size, the lighter can be installed by a single worker.

  Further, in the lighting apparatus according to the present embodiment, grooves having a trapezoidal cross-sectional shape are formed on the upper surface of the aluminum base by extrusion molding, and the grooves are integrated on the beam-shaped member formed between the side surfaces of the resin casing. The molded resin rivets for fixing the components are joined together in a fitted state.

  As a result, a rivet that cannot be formed by conventional die casting can be integrally formed with the housing as a resin rivet, and an LED module, an LED drive power source, or the like can be attached to the resin rivet with one touch. As a result, it is possible to simplify the manufacturing process and reduce the number of assembly steps by eliminating the need for screws.

The present invention is not limited to the above embodiment, and for example, the following modifications are possible.
<Modification 1>
In the above embodiment, the joint portion in the longitudinal direction of the aluminum base 11 and the resin casing 13 shown in FIG. 2 and the like, that is, the end portions 11 a and 11 b of the aluminum base 11, and the inner edges 13 a and 13 b of the resin casing 13. The integral joint area depends on the end area of the aluminum base.

  Therefore, in these portions, for example, as shown in the cross-sectional view of FIG. 7, a protruding portion 71 is provided by extending a part of the resin casing 13 to the aluminum base 11 side, and the end of the aluminum base 11 and the resin casing are provided. You may make it the structure which increases an integral joining area (it shows with the thick line 73 in FIG. 7) with the inner side edge part of the body 13. FIG. Thereby, it becomes possible to obtain further bonding strength between the metal and the resin.

<Modification 2>
In the above-described embodiment, the entire aluminum base 11 including the heat radiating fin portion 33 and the power supply placement portion 35 is made of a metal material. However, the present invention is not limited to this. For example, although not shown, only the radiation fin portion 33 may be made of a metal material, and the power supply placement portion 35 adjacent to the radiation fin portion 33 may be made of resin.

  By doing so, at least at the place where the LED module 21 is mounted, the back side of the LED module 21 can be in contact with the metal to ensure heat dissipation, and the power mounting portion 35 can be made of resin to reduce the weight. .

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Cover part 11 Aluminum base 11c, 11d Edge 13 of aluminum base Resin housing | casing 13c, 13d Edge 14 of resin housing Waterproof packing 14a-14d, R rib 16 Front cover 17 Front cover holding | maintenance 17a, 17b Hole Parts 18a, 18b Fall prevention screw 20 Instrument body 21 LED module 30 Main body housing 33 Radiation fin part 35 Power supply placement part 41a, 41b Groove parts 45a-45h, 47a-47d Resin rivets 51a, 51b, 53a-53c Beam-like members 52, 54 Wall part 61 Umbrella part 61a, 61b Umbrella member 62 Slit 63 Base part 63a, 63b Base member 65a, 65b The lowermost peripheral edge 67a, 67b of the umbrella part The base of the base part

Claims (7)

A main body incorporating a plurality of LED (Light Emitting Diode) elements as a light source;
A cover part which is arranged so as to cover the front part of the main body, and a part of which is made of a translucent member;
With
The said main body is comprised with the housing | casing which a back part consists of an aluminum extrusion molding material, and a side part consists of a resin molding material, The heat | fever which generate | occur | produced from these LED elements is conducted to the said back part, The lighting fixture characterized by the above-mentioned.   The aluminum extrusion molding material and the resin molding material are integrally molded by joining in a state where a part of the resin molding material bites into and bonded into the micropores formed on the surface of the aluminum extrusion molding material. The lighting device according to claim 1, wherein a back surface portion and the side surface portion are integrally formed.   The back portion includes a first region and a second region that extends from the first region and recedes from the first region toward the back side of the main body, A substrate on which the plurality of LED elements are arranged is mounted on the front surface of the first region, and heat radiation fins are formed on the back surface of the first region, and the plurality of LED elements are formed in the second region. The lighting apparatus according to claim 1, wherein the driving power source is accommodated.   The main body includes a beam-shaped member that is bridged between the opposite side surface portions of the side surface portions and is integrally formed with the side surface portion, and is integrally formed with the beam-shaped member and is in a normal direction of the first region. The lighting apparatus according to claim 3, wherein the board and the driving power source are fixed to a protruding protruding protrusion.   The lighting apparatus according to claim 4, wherein the beam-shaped member is integrally formed with the back surface portion while being fitted with a groove portion formed on an upper surface of the back surface portion.   The lighting device according to claim 5, wherein the groove has a trapezoidal cross-sectional shape. The lighting fixture according to claim 1, wherein the substrate on which the plurality of LED light sources are mounted is in close contact with the back surface portion in the first region.