JP2011134517A - Illumination fixture and illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination fixture and an illumination device, capable of making a light-emitting module waterproof, of suppressing temperature elevation of a light-emitting element by a simple constitution, and of draining water inside a case. <P>SOLUTION: The illumination fixture includes: a case 1 equipped with a base case member 4 in which an irradiation opening 71 is formed and a cover case member 5 joined to this base case member 4 without a sealing means; the waterproof light-emitting module 2 which is housed in this case 1 so that a light-emitting face opposes to the irradiation opening 71, and has a substrate 24 and the light-emitting element 25 mounted on this substrate 24; and a gap G formed between the surrounding of the light-emitting face of the light-emitting module 2 and the irradiation opening 71. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting apparatus and a lighting apparatus that are suitable for outdoor use as street lights, crime prevention lights, garden lights, projectors, and the like, and that use light emitting elements such as LEDs (light emitting diodes) as light sources.

  Conventionally, in an outdoor lighting device such as a street light or a security light, the instrument body has a waterproof structure in order to prevent rainwater or the like from entering the instrument body. For example, a street light that secures a waterproof function and an insect-proof function by using a joint structure between an upper glove and a lower glove as a special structure is known (see Patent Document 1). There is also known a rainproof type lighting fixture that is provided with a water shielding wall that covers the upper part of the lighting electrical component attached to the fixture body, and that has a drain hole in the bottom wall of the fixture body (see Patent Document 2). . In this Patent Document 2, there is a description that packing may be provided at the fitting portion of the instrument body and the glove.

  Therefore, those disclosed in Patent Document 1 and Patent Document 2 are basically intended to improve the sealing performance of the instrument body so that rainwater or the like does not enter the instrument body.

  On the other hand, there has been proposed a lighting fixture in which a light source is covered with a punching metal so that light can be emitted upward, the light source is waterproof, and a drainage portion is provided on the bottom plate (Patent Document 3). reference). According to Patent Document 3, water such as rainwater enters the instrument body, but since the light source is waterproof, a waterproof member such as a water shielding plate or packing is not required. Since the light shielding member is provided between the light source and the light, the light from the light source is blocked by the light shielding member, and the water drainage portion is not illuminated and cannot be seen, so that the appearance is not impaired.

  On the other hand, in this kind of illumination device, one using a light emitting element such as an LED as a light source has been developed. By using a light emitting element such as an LED, there is an advantage that it can be used over a long period of time without incurring maintenance costs such as lamp replacement. In this case, it is known that a light emitting element such as an LED brings about changes in various characteristics such as a decrease in light output and a shortened life as its temperature rises. Therefore, in an illuminating device using a solid light emitting element such as an LED or EL element as a light source, it is necessary to suppress the temperature rise of the light emitting element in order to improve various characteristics and lifetime.

JP 2000-348522 A JP 2005-158404 A JP 2009-129757 A

  However, when a light-emitting element such as an LED is used as the light source, both heat dissipation, waterproofness and dustproofness must be ensured in order to suppress the temperature rise of the light-emitting element. In order to ensure waterproofness and dustproofness, there is a method to increase the sealing of the instrument body, but this method leads to a decrease in heat dissipation, and both heat dissipation, waterproofness and dustproofness Securing is in a trade-off relationship. Further, in the configuration as shown in Patent Document 3, it is necessary to provide a light shielding member between the drainage portion and the light source.

  The present invention has been made in view of the above-described problems, and a lighting apparatus and a lighting apparatus that can make a light emitting module waterproof, can suppress a temperature rise of a light emitting element with a simple configuration, and can also drain water in a case. The purpose is to provide.

The lighting fixture according to claim 1 includes a case including a base case member in which an irradiation opening is formed, a cover case member joined to the base case member without a sealing means, and a light emitting surface on the case. Is formed between the periphery of the light emitting surface of the light emitting module and the irradiation opening.The waterproof light emitting module includes a substrate and a light emitting element mounted on the substrate. And a gap.
In the present invention and the following inventions, the technical meaning and interpretation of terms are as follows unless otherwise specified.

  The case only needs to include a base case member and a cover case member and be configured to accommodate the light emitting module, and the shape and the like are not particularly limited. The light emitting surface of the light emitting module means the surface of the light emitting element on the side from which light is emitted. Further, the gap formed between the periphery of the light emitting surface of the light emitting module and the irradiation opening is not limited to the entire circumference of the light emitting surface, but includes a case where it is partially formed.

As the substrate, for example, a substrate made of a material such as aluminum, which has good thermal conductivity, glass epoxy resin, ceramics, or the like can be used. A light emitting element is a solid light emitting element such as an LED. As the mounting method of the light emitting element, a surface mounting method or a chip-on-board method can be applied, and the mounting method is not particularly limited. Moreover, there is no restriction | limiting in particular in the mounting number of a light emitting element.
The gap formed between the periphery of the light emitting surface of the light emitting module and the irradiation opening has a function of contributing to heat dissipation and drainage of the light emitting module, for example.

The lighting equipment is suitable for use in crime prevention lights, street lights, garden lights, road lights, signboard lighting and floodlights used outdoors, but prevents them from being applied to various lighting equipment used indoors. is not.
The lighting fixture according to claim 2 is the lighting fixture according to claim 1, wherein the gap serves as both a heat radiation port and a drain port.
In addition to the gap serving as the heat radiating port and the drain port, it does not preclude separately providing the heat radiating port and the drain port. Thereby, heat dissipation and drainage can be performed efficiently.

  The lighting fixture according to claim 3 is the lighting fixture according to claim 1 or 2, wherein a heat radiating port is formed in a side wall of the cover case member.

The lighting fixture according to claim 4 is the lighting fixture according to any one of claims 1 to 3, wherein the base case member includes a back-side opening to which the cover case member is joined. The cross-sectional shape from the back side opening toward the irradiation opening is formed in a tapered inclination shape.
The lighting device according to claim 5 is the lighting device according to any one of claims 1 to 4,
The lighting fixture is attached to the upper end, and includes a support column that is erected in the vertical direction.

  According to the present invention, the gap is formed between the periphery of the light emitting surface of the light emitting module and the irradiation opening, so that the temperature rise of the light emitting element can be suppressed with a simple structure, and the water can be discharged in the case. It is possible to provide a lighting apparatus and a lighting apparatus having the following.

It is a perspective view which shows the lighting fixture which concerns on the 1st Embodiment of this invention. It is a perspective view shown seeing from the front (downward) side. It is a top view which shows the front side. It is a sectional side view which cuts and shows a case along the XX line of FIG. It is a perspective view which shows a light emitting module. It is a perspective view which decomposes | disassembles and shows a lighting fixture. FIG. 4 is a cross-sectional view showing the case cut along a line YY in FIG. 3. It is a sectional side view which expands and shows the principal part of FIG. It is a perspective view which expands and shows a part of case. It is a perspective view which shows the crime prevention light as an illuminating device. It is a perspective view which shows the lighting fixture which concerns on the 2nd Embodiment of this invention. FIG. 8 is a transverse sectional view corresponding to FIG. 7.

  Hereinafter, a lighting fixture and a lighting device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 10. 1 to 9 show a lighting fixture, and FIG. 10 shows a security light as a lighting device. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 1 to 4, the lighting fixture is a lamp body of a security light, and includes a case 1, a light emitting module 2 and a power supply unit 3 accommodated in the case 1. An irradiation opening is formed in the case 1, and light from the light emitting module 2 is radiated outward from the irradiation opening.

  The case 1 has a horizontally long appearance, and includes a base case member 4 and a cover case member 5. Further, the base case member 4 includes an outer frame member 6 and a front plate 7. The outer frame member 6 has a generally boat-shaped frame shape, and is formed by extrusion molding of an aluminum material. As shown in FIG. 6, a substantially rectangular rear side opening 61 is formed on the back side of the outer frame member 6, and a substantially rectangular front side opening 62 is similarly formed on the front side. ing. In addition, a flange portion 63 is formed on substantially the inner periphery of the front side opening 62. Furthermore, the end surface of the front surface side opening 62 is formed in an inclined shape S so as to spread toward the front surface side. As a result, the light irradiation range can be expanded.

  As shown in FIGS. 4, 6, and 7, an attachment step portion 64 is formed on the inner peripheral surface side of the outer frame member 6, and is supported in the longitudinal direction of the attachment step portion 64. The member 65 is attached by fixing means such as a screw. The support member 65 is formed to be bent in a U shape in the side surface shape, and a cover case member 5 described later is attached to the support member 65. A plurality of irregularities are formed on the outer surface of the outer frame member 6 along the lateral direction.

  The front plate 7 has a substantially rectangular shape and is formed into a flat plate shape using a stainless material, and is placed and attached to the flange portion 63 of the outer frame member 6. The front plate 7 has an elliptical irradiation opening 71, and a mounting base 72 to which the power supply unit 3 is attached is fixed to the front plate 7 along the irradiation opening 71 in the longitudinal direction.

  The cover case member 5 is formed of an aluminum material or a stainless steel material, and has a rectangular parallelepiped box shape having an opening 51 on one surface side. Further, a flange 52 protruding outward is formed on the outer peripheral side of the opening 51 over the entire circumference. The opening 51 and the back side opening 61 of the outer frame member 6 are combined, and the cover case member 5 is joined to the outer frame member 6 by fixing means such as screws. As a result, the rear side opening 61 of the outer frame member 6 is covered with the cover case member 5.

  Specifically, the screw that passes through the screw through hole formed in the flange 52 is attached by being screwed into the screw hole of the support member 65. Here, no seal member or special seal structure is provided between the flange 52 of the cover case member 5 and the upper surface of the support member 65 or the outer frame member 6. This is because the heat dissipation of the light emitting module 2 is effectively exhibited as will be described later.

  As representatively shown in FIG. 5, the light-emitting module 2 includes a light source 21, a heat sink 22, and a transparent cover 23 that covers the light source in a sealed state. The light emitting module 2 has waterproofness, for example, IP65 class waterproofing and dustproofing of IEC standards. The light source unit 21 includes a substrate 24, a plurality of light emitting elements 25 mounted on the substrate 24, and a lens 26 facing the light emitting elements 25. Therefore, the surface side of the substrate 24 on which the light emitting element 25 is mounted becomes a light emitting surface.

The substrate 24 is made of a substantially elliptical metal or insulating flat plate, and an LED is provided as the light emitting element 25. This LED is a package of LED chips, and is mounted on the surface of the substrate 24 in four blocks as one block on the surface of the substrate 24 by a surface mounting method. When the substrate 24 is made of metal, it is preferable to apply a material having good heat conductivity and excellent heat dissipation such as aluminum. Furthermore, when using as an insulating material, it can form with synthetic resin materials, such as a glass epoxy resin, for example.
The lens 26 is disposed corresponding to the three blocks, and efficiently controls the light distribution of each LED.

  The heat sink 22 is formed of an aluminum material having good thermal conductivity, contacts the back surface of the substrate 24, and conducts heat from the substrate 24. A plurality of heat radiation fins 22a are provided on the back surface side. I have.

  The cover 23 is made of a synthetic resin having translucency such as acrylic resin, and is firmly hooked to the side of the heat sink 22 so as to cover the surface side of the substrate 24 in a sealed state in order to ensure the waterproof property of the light source unit 21. It has been stopped.

  The power supply unit 3 is waterproof, and a power supply circuit is housed in a box-shaped case, and electrical components such as a control IC, a transformer, and a capacitor are mounted on the power supply circuit board. The power supply circuit board is connected to a power supply and is electrically connected to the board 24 on which the LEDs are mounted, and controls the lighting of the LEDs by the power supply circuit.

  An attachment arm 8 is attached to the rear side of the case 1. The attachment arm 8 is for attaching the lighting fixture to the support column, and is composed of a rotating fitting 81 and a fixing fitting 82. The rotating fitting 81 is fixed to the case 1 and is pivotally supported so as to be rotatable with respect to the fixing fitting 82. On the other hand, the fixing bracket 82 is fixed to the column P.

Next, an outline of the assembly process of the lighting fixture will be described mainly with reference to FIG. First, the front plate 7 is placed on the flange portion 63 of the outer frame member 6. Next, both end portions 27 of the light emitting module 2 are attached to the front plate 7 by screws. In this case, the light emitting surface of the light emitting module 2 is attached so as to face the irradiation opening 71. More specifically, as shown in FIGS. 7 and 8, a predetermined gap G is formed between the periphery of the light emitting surface of the light emitting module 2 and the irradiation opening 71. That is, the light emitting module 2 is attached so that a predetermined gap G is formed between the irradiation opening 71 and the light emitting module 2. The cover 23 of the light emitting module 2 is exposed from the irradiation opening 71.
Further, the power supply unit 3 is attached to the front plate 7 via an attachment base 72. Subsequently, the cover case member 5 is attached so as to be covered from above.

  As shown in FIG. 10, the luminaire configured in this way is used as a security light by being attached to the upper end portion of a column P that is erected in a vertical direction on a sidewalk such as a road. In this case, it is possible to mount the lighting fixture by appropriately adjusting the elevation angle of the lighting fixture according to the installation situation.

The effect of the crime prevention light as a lighting fixture and a lighting device as described above will be described. When the power is turned on, the power supply circuit of the power supply unit 3 operates, power is supplied to the substrate 24, and the light emitting element 25 emits light. The light emitted from the light emitting element 25 is controlled by the lens 26, passes through the cover 23, and is irradiated outward. Thereby, the road surface can be illuminated with moderate brightness.
Further, by using the light emitting element 25 such as an LED as the light source, the life is extended, and the maintenance cost required for the replacement of the light source can be reduced.

  While the light emitting element 25 is turned on, heat is generated. This heat is mainly conducted from the substrate 24 to the heat sink 22 and radiated from the heat radiation fins 22a. At this time, outside air is introduced into the case 1 as shown by an arrow through a gap G between the periphery of the light emitting surface of the light emitting module 2 and the irradiation opening 71 as shown in FIGS. The introduced outside air flows to the outside through a slight gap at the joint portion between the cover case member 5 and the outer frame member 6 that does not employ a seal member or a special seal structure (see FIGS. 7 to 9). ). Therefore, by this convection action, the light emitting module 2 and the heat sink 22 are cooled and heat dissipation is promoted. In this case, the gap G functions as a heat radiation port.

  In particular, rainwater or the like may invade from the joint between the cover case member 5 and the outer frame member 6 or the like when used outdoors. In this case, the gap G functions as a drain port, that is, a drain hole. In addition, since the light emitting module 2 is waterproof, it does not affect even if rainwater or the like enters the case 1. On the contrary, when rainwater or the like enters the light emitting module 2, the light emitting module 2 acts on the light emitting module 2. Has the effect of being cooled.

As described above, the gap G between the periphery of the light emitting surface of the light emitting module 2 and the irradiation opening 71 can be used to function as a heat radiating port or a drain port. The effect of the period can be achieved. That is, the gap G serves as both a heat radiating port and a drain port. Further, since the gap G is between the periphery of the light emitting surface and the irradiation opening 71, it is preferable to irradiate light from the gap G, and it is preferable to use light shielding members or the like as in the prior art. .
Moreover, since the cross-sectional shape which goes to the irradiation opening 71 from the back side opening 61 of the base case member 4 is formed in the taper inclination shape, drainage can be performed smoothly.

  As described above, according to the present embodiment, since the gap G is formed between the periphery of the light emitting surface of the light emitting module 2 and the irradiation opening 71, the temperature rise of the light emitting element 25 can be suppressed with a simple configuration. It is possible to provide a lighting fixture and a lighting device having waterproofness capable of draining the case 1.

  Next, the lighting fixture which concerns on the 2nd Embodiment of this invention is demonstrated with reference to FIG.11 and FIG.12. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment, or an equivalent part, and the overlapping description is abbreviate | omitted.

  In the present embodiment, a heat radiation port 55 is formed on the side wall of the cover case member 5. Therefore, in addition to the first embodiment, the outside air introduced from the gap G between the periphery of the light emitting surface of the light emitting module 2 and the irradiation opening 71 is also led out from the heat radiating port 55, the convection action is promoted, and the heat radiated. Increases effectiveness.

  Furthermore, as shown in FIG. 12, when rainwater or the like enters the case 1 from the heat radiation port 55, the rainwater or the like acts on the heat sink 22 of the light emitting module 2 as shown by an arrow, thereby enhancing the cooling effect of the light emitting module 2. be able to. This is because the degree to which rainwater or the like acts on the light emitting module 2 is increased because the light emitting module 2 is disposed in the path connecting the heat radiation port 55 and the gap G that is the drainage port.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the power supply unit may be housed in the support column without being housed in the case. Furthermore, the power supply unit may be configured integrally with the light emitting module. The mounting of the light emitting element is not limited to the surface mounting method, and may be a chip on board mounting method.

Further, it is not an essential requirement of the present invention to integrally provide a heat sink in the light emitting module. The heat sink can also be configured by applying a case of a lighting fixture or the like. In the said embodiment, although the base case member was comprised with the outer frame member and the front plate, you may comprise these integrally. Furthermore, in addition to the drainage port formed by the gap between the periphery of the light emitting surface of the light emitting module and the irradiation opening, a drainage port may be additionally formed separately for effective drainage. In this case, a separate drainage port may be the main and the drainage port constituted by the gap may have a secondary function.
Furthermore, when increasing the amount of light, a plurality of light emitting modules may be arranged in the case.

  The lighting apparatus of the present invention is preferably applied to crime prevention lights, street lights, garden lights, road lights, signboard lighting and floodlights used outdoors, but is applied to various lighting apparatuses used indoors. It does not prevent.

1 ... case, 2 ... light emitting module, 3 ... power supply unit,
4 ... Base case member, 5 ... Cover case member, 25 ... Light emitting element,
55 ... Radiation opening, 61 ... Back side opening, 71 ... Irradiation opening, G ... Gap,
P ... prop

Claims (5)

A case provided with a base case member in which an irradiation opening is formed, and a cover case member joined to the base case member without a sealing means;
The case is accommodated such that the light emitting surface faces the irradiation opening, and a waterproof light emitting module having a substrate and a light emitting element mounted on the substrate,
A gap formed between the periphery of the light emitting surface of the light emitting module and the irradiation opening;
The lighting fixture characterized by comprising.   The lighting apparatus according to claim 1, wherein the gap serves as a heat radiating port and a drain port.   The lighting apparatus according to claim 1, wherein a heat radiating port is formed in a side wall of the cover case member.   The base case member includes a back side opening to which the cover case member is joined, and a cross-sectional shape from the back side opening toward the irradiation opening is formed in a tapered inclination shape. The lighting fixture according to any one of claims 1 to 3. A lighting fixture according to any one of claims 1 to 4,
This lighting fixture is attached to the upper end, and a column that is erected vertically,
An illumination device comprising:

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