JPWO2014013526A1 - LED lighting fixtures - Google Patents

Abstract

Provided is an embedded LED having a high heat insulating effect, which can suppress an increase in the temperature of the lighting device and can reduce cost and space by providing an inner housing having a heat insulating effect in a housing of the lighting device. Provide lighting fixtures. A wall-embedded LED lighting apparatus using a light-emitting diode, comprising: a circular light-emitting portion comprising a plurality of light-emitting diodes; a light-transmitting window at one end; and an insertion opening for the circular light-emitting portion at the other end. An external housing that is a cylindrical housing provided with an opening, a circular lid that is a lid for the opening of the external housing, and a fixing spring body, and the inner diameter of the external housing that houses the circular light emitting portion This is a configuration in which an inner housing made of a cylindrical body having a shorter outer diameter and having a bottom that opens the irradiation direction of the light emitting diode is inserted and fitted from the opposite side of the irradiation direction. [Selection] Figure 1

Description

  The present invention relates to a lighting apparatus using LEDs, and more particularly to an embedded LED lighting apparatus having a high thermal insulation effect that can suppress an increase in temperature of the apparatus.

  2. Description of the Related Art Conventionally, LEDs have been widely used as light sources because they have power saving and light weight, excellent impact resistance, and long life. In particular, the use as a lighting fixture is wide, and in particular for household lighting fixtures, various types of lighting fixtures using various LEDs have been developed in response to a demand for energy saving.

  Although LEDs have many advantages, there are various problems to be solved when used as a home lighting fixture. For example, although an LED is basically an element that generates a small amount of heat, a relatively high voltage is applied when used as illumination, and a large current flows in a high-power LED lighting fixture. As a result, the LED generates heat accordingly. In particular, it is conceivable to equip a plurality of LEDs as a method for ensuring higher illuminance, but it is necessary to arrange the LEDs at a high density in order to reduce the size of the LED lighting apparatus, and a large current flows in this state. There was a problem that the calorific value was high.

  LED lighting fixtures are often used directly embedded in building materials such as walls and ceilings, but when used as lighting fixtures in situations where the LEDs are hot, they can cause accidents such as fire and smoke. There was a possibility of being connected. In particular, in an embedded LED lighting fixture, the lighting fixture main body is directly embedded in a building member such as a wall, so that the lighting fixture main body is in direct contact with the building member. There was an urgent need to develop lighting fixtures.

As a technique for solving this problem, there is a technique disclosed in Japanese Patent Laid-Open No. 11-163410. In the present invention, at least one of the LED chip and the substrate is directly cooled to enhance heat dissipation, thereby realizing high-density mounting of the LED chip on the substrate. As a method, the LED chip is sealed in a container, the container is filled with a liquid, the heat from the LED chip is dissipated with the liquid to suppress the temperature rise, and the LED chip is mounted on the substrate at a high density. Techniques that enable it are disclosed.
However, according to this technology, since liquid is used as a cooling medium, there is a problem of deterioration of the substrate and the container itself, and it is assumed that liquid leakage may occur in some cases. There was a problem of receiving. Further, if the container containing the liquid is sealed and further provided with a cooling pipe communicating with the inside of the container to further improve the heat dissipation, it is difficult to make the lighting fixture compact and the manufacturing cost increases. There was also a problem.

  Japanese Patent Application Laid-Open No. 2011-29065 discloses a technique in which a ventilation path that communicates the inside of the LED board unit and the outside of the LED lighting fixture main body is provided, and the light-emitting diode is cooled by air through the ventilation path. However, this technique also has a problem that the LED lighting apparatus main body is enlarged. In addition, there is a problem that the structure of the LED lighting apparatus becomes complicated and the manufacturing cost increases.

Depending on the method of heat dissipation of the LED lighting fixture, the building member in contact with the lighting fixture will be heated, which may cause ignition, smoke, etc. Insulation to the building member such as walls rather than measures by heat dissipation It was thought that the LED lighting fixtures that are safer, space-saving, and low-cost can be provided if importance is placed on the performance.
Therefore, it has been desired to develop an embedded type LED lighting fixture that is low in cost because the structure is not too complicated and that has high heat insulating properties for a building member that contacts the lighting fixture.
JP-A-11-163410 JP 2011-29065 A

  In order to solve the above problems, the present invention is an LED lighting device, and in particular, by providing an inner housing having a heat insulating effect in the housing of the lighting device, it is possible to suppress an increase in temperature of the device, and Provided is an embedded LED luminaire having a high heat insulating effect, which enables cost and space saving.

  In order to achieve the above object, an embedded LED lighting apparatus according to the present invention is a wall-mounted LED lighting apparatus using a light emitting diode, and the LED lighting apparatus is a circular light emitting device comprising a plurality of light emitting diodes. An outer housing that is a cylindrical housing having a transparent window at one end and an opening that serves as an insertion port for a circular light emitting portion at the other end, and a circular lid that serves as a lid for the opening of the outer housing In order to maintain the illuminance of the LED lighting fixture and suppress the temperature rise of the fixture, the irradiation direction of the light emitting diode having an outer diameter shorter than the inner diameter of the outer housing that houses the circular light emitting portion The internal housing which consists of a cylindrical body with the bottom which opened | released is inserted and installed from the opposite side of the irradiation direction.

  Further, the circular light emitting section is composed of a circuit component for lighting the light emitting diode, an LED module made of a substrate on which a plurality of light emitting diodes are mounted, and a transformer built-in module on which a voltage conversion transformer chip is mounted.

  The circular light emitting unit is installed in the inner housing so that the opening side of the inner housing is an LED module, and the inner housing is installed in the outer housing so that the opening of the inner housing is on the translucent window side. It is the structure to do.

  In addition, the outer housing is configured to be equipped with a fixing wing having an outer diameter longer than that of the outer housing. Further, the inner housing is made of plastic.

Since the present invention is configured as described in detail above, the following effects are obtained.
1. Since the internal housing for housing the circular light emitting portion is provided, heat generated from the light emitting portion is not directly conducted to the external housing, and the external housing can be kept at a low temperature. In addition, it is possible to ensure illuminance because one surface that is the irradiation direction of the light emitting diode is an opening, and further, since the outer diameter dimension of the inner housing is shorter than the inner diameter dimension of the outer housing, a space is created between the inner housing and the outer housing It becomes possible to suppress heat conduction to the outside.
2. Further, since the circular light emitting unit is divided into the LED module and the transformer built-in module, the heat generation source can be dispersed.

3. In addition, since the opening direction of the inner housing is the translucent window side, sufficient illuminance from the light emitting part can be secured while obtaining the heat insulating effect by the inner housing, and the circular light emitting part can be easily opened even when the cover of the outer housing is opened. It becomes possible to set it as the structure which cannot visually recognize a structure.
4). In addition, since a fixing wing having an outer diameter longer than that of the external housing is provided, it is easy to fix the building to a building member such as a wall, and a heat dissipation effect through the wing can be expected.
5. Further, since the inner housing is made of plastic, a high heat insulating effect can be obtained, and the material and manufacturing cost can be suppressed.

Hereinafter, LED lighting fixtures according to the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a perspective view of an LED lighting apparatus according to the present invention, and FIG. 2 is a plan view of a circular light emitting unit. FIG. 3 is a bottom perspective view of the outer housing, and FIG. 4 is a side view of the outer housing. FIG. 5 is a perspective view of the internal housing, and FIG. 6 is a perspective view showing the internal structure of the LED lighting apparatus. FIG. 7 is a view showing an embodiment in which an LED lighting fixture is attached to the embedding hole, and FIG. 8 is a plan view of the LED lighting fixture.
The LED lighting apparatus 10 of the present invention includes a circular light emitting unit 20, an external housing 30, a circular lid body 40, a fixing spring body 50, and an internal housing 60, and is mainly embedded in a building member such as a wall surface. It is the lighting fixture which uses the light emitting diode used in 1 as a light source.

  As shown in FIG. 1, the LED lighting apparatus 10 irradiates light emitted from the light emitting diode 22 of the circular light emitting unit 20 inside through the light transmitting window 32. As shown in FIG. 2, the circular light emitting unit 20 is a circular member and is equipped with a light emitting diode 22 that is a light emitter. In the present embodiment, the circular light emitting unit 20 includes an LED module 24 and a transformer built-in module 28. As shown in FIG. 2, the LED module 24 includes a light emitting diode 22 and a circuit component 26 on a disk-shaped substrate. A plurality of light emitting diodes 22 are arranged on the circumference of the surface of the substrate. As a result, it is possible to irradiate the light efficiently and uniformly, and it is possible to output a sufficiently high illuminance as illumination while suppressing the total amount of heat generated by the light emitting diode 22. The circuit component 26 supplies power to the light emitting diode 22. The position where a plurality of light emitting diodes 22 are arranged is not limited to the position along the circumference.

  The transformer built-in module 28 is a substrate equipped with a voltage conversion transformer chip (not shown). The voltage conversion transformer chip performs transformation of the power source converted into direct current. Space-saving can be achieved by modularizing the transformer using the voltage conversion transformer chip.

As shown in FIG. 3, the outer housing 30 is a cylindrical casing, and an inner housing 60 (see FIG. 5 and FIG. 6), which will be described later, equipped with the circular light emitting unit 20 is disposed inside the outer housing 30. It is installed.
The outer housing 30 is provided with a translucent window 32 at one end. The translucent window 32 is a window for irradiating light from the circular light emitting unit 20 to the outside. In this embodiment, the translucent window 32 is formed of a circular hole that opens to the outer housing 30, and the opening is provided with a lid made of a translucent material such as acrylic resin, but has translucency. If it is a material, it will not be limited to this. Note that the material of the translucent window 32 is desirably a material excellent in heat dissipation.
Further, as shown in FIG. 3, an opening 34 is provided on the opposite surface of the outer housing 30 to the transparent window 32. The opening 34 serves as an insertion port for the inner housing 60 equipped with the circular light emitting unit 20, and the inner housing 60 is fitted into the outer housing 30 through the opening 34 as shown in FIG. 6.

  The circular lid 40 is a lid of the opening 34 of the external housing 30, and is a circular member that fixes and holds the internal housing 60 inserted and fitted therein. Further, as shown in FIG. 4, the fixing spring body 50 is a pair of plate-like spring bodies installed on the side surface of the outer housing 30, and extends to the left and right (or in one direction) around the spring fixing portion 52. Made of wing-shaped members. Thereby, it becomes possible to ensure the stability at the time of embedding LED lighting fixture 10 main body.

  As shown in FIG. 5, the inner housing 60 is a member made of a cylindrical body having a bottom for housing the circular light emitting unit 20. The inner housing 60 has an outer diameter shorter than the inner diameter of the outer housing 30. Inserted from the rear. The circular light emitting unit 20 becomes high temperature due to heat generated from the LED module 24, the circuit component 26, and the like. This heat is conducted to the external housing, and a building member such as a wall in which the LED lighting apparatus 10 is embedded is overheated, which may cause deformation, smoke generation, ignition, and the like. It is necessary to prevent the heat generated from the circular light emitting unit 20 from increasing the temperature of the LED lighting apparatus 10 and conducting heat to the outside. The circular light emitting unit 20 is stored in the internal housing 60 as shown in FIG. By doing so, it became possible to suppress heat conduction effectively.

  In this embodiment, the material of the inner housing 60 is a plastic having a low thermal conductivity. Thereby, it is possible to effectively suppress the conduction of heat generated by the circular light emitting unit 20 to the external housing 60. As the material of the inner housing 60, any synthetic resin can be used. For example, an epoxy resin that is a thermosetting resin, an ABS resin, an acrylic resin, or polyethylene as a general-purpose plastic can be used.

  As shown in FIG. 5, the inner housing 60 has an open top surface of a cylinder and a bottom surface sealed, and is inserted and fitted through the opening 34 of the outer housing 30 from the open top surface. By storing the circular light emitting part 20 in the inner housing 60, heat conduction to the outside is suppressed, but when the circular light emitting part 20 is completely covered, the heat in the inner housing 60 is hardly dissipated to the outside. There exists a possibility that the circular light emission part 20 may deteriorate with a heat | fever. Further, depending on the material of the inner housing 60, there is a thing with low translucency, and there is a possibility that light from the light emitting diode 22 of the circular light emitting unit 20 may be suppressed. Therefore, by opening the upper surface of the cylindrical inner housing 60, the illuminance of the light emitted from the light emitting diode 22 can be maintained, and appropriate heat dissipation can be performed. It became possible to do. In addition, since it is not necessary to install a special cooling member, the manufacturing cost can be reduced.

  The opening of the upper surface of the inner housing 60 has a configuration in which an opening 62 is provided in the irradiation direction of the light emitting diode 22 as shown in FIGS. The circular light emitting unit 20 is mounted in the inner housing 60 so that the LED module 24 is disposed on the opening 62 side of the inner housing 60 and the LED light is irradiated outward from the opening 62. The internal housing 60 is configured to be installed in the external housing 30 so that the opening 62 of the internal housing 60 is disposed on the light transmitting window 32 side.

  With this configuration, there is no obstacle in the light irradiation direction, so that illuminance is ensured, heat radiation is limited to the light irradiation direction, and the side surface of the inner housing 60 can be insulated. Furthermore, since the opposite surface of the opening 62 of the internal housing 60 is closed, even if the circular lid 40 is removed from the external housing 30, the LED module 24 and the circuit component 26 of the circular light emitting unit 20 cannot be immediately recognized. There is also an advantage.

  Further, as shown in FIG. 6, the inner housing 60 has an outer diameter dimension shorter than the inner diameter dimension of the outer housing 60. With this configuration, an air layer is formed between the inner housing 60 and the outer housing 30, so that heat conduction can be suppressed. In this embodiment, the outer diameter dimension of the inner housing 60 is shorter than the inner diameter dimension of the outer housing 60 by 1 mm. Since an air layer having a width of 0.5 mm is formed between the inner housing 60 and the outer housing 60, heat conduction can be suppressed and a sufficient size for storing the circular light emitting unit 20 can be secured. It became.

  In this embodiment, the inner housing 60 is provided with an LED module fixing leg 64 and a transformer built-in module fixing leg 66 as shown in FIG. The LED module fixing leg 64 is a leg for fixing the LED module 24 to the inner housing 60, and the transformer built-in module fixing leg 66 is a leg for fixing the transformer built-in module 28 to the inner housing 60. The LED module fixing leg 64 is configured to be one step longer than the transformer built-in module fixing leg 66, and the LED module 24 is disposed on the opening 62 side, and the transformer built-in module 28 is disposed on the bottom of the internal housing 60. is there.

  Further, in this embodiment, as shown in FIG. 3, the fitting convex portion 38 is provided on the inner wall surface of the outer housing 30, and the fitting concave portion 68 is provided on the side surface of the inner housing 60. When the inner housing 60 is fitted in the outer housing 30, the fitting convex portion 38 and the fitting concave portion 68 are fitted. Thus, the inner housing 60 is fixed in the outer housing 30 when the inner housing 60 is fitted.

  As shown in FIGS. 1 and 3, the outer housing 30 is equipped with a fixing wing 36. The fixing wing 36 has a disk shape having an outer diameter longer than that of the outer housing 30. Thereby, it became easy to fix the LED lighting fixture 10 to building members, such as a wall, and it became possible to ensure the stability at the time of embedding the LED lighting fixture 10 main body. Furthermore, by providing the fixing wing 36, a heat dissipation effect through the wing can be expected.

  Aluminum can be used as a material constituting the LED lighting apparatus 10. The material is not limited to aluminum as long as the material can secure sufficient strength.

  As shown in FIG. 7, the embodiment of the LED lighting device 10 of the present invention is embedded in a wall surface 70 and is connected to an AC power source (not shown) from a power plug 90 via a power cable 80. Power is supplied to the transformer built-in module 28 in the main body 10, and the LED module 24 is energized to light the light emitting diode 22 installed in the LED module 24.

  As shown in FIG. 8, the power cable 80 is a cable extending from the main body of the LED lighting apparatus 10. Since the power plug 90 is installed at the other end of the power cable 80, it can be directly connected to a household AC 100 volt power source. The power cable 80 can be provided with a connector 100 that is divided into two at a location close to the main body of the LED lighting apparatus 10. The connector 100 allows the power cable 80 to be detachable as a single unit at a location close to the main body of the LED lighting fixture 10, and facilitates removal and replacement after the LED lighting fixture 10 is installed, such as when the LED lighting fixture 10 fails.

LED lighting fixture perspective view Plan view of circular light emitting part Bottom perspective view of external housing Side view of external housing Perspective view of internal housing Perspective view showing internal structure of LED lighting fixture The figure which shows the Example which attached the LED lighting fixture to the embedding hole Plan view of LED lighting fixture

DESCRIPTION OF SYMBOLS 10 LED lighting fixture 20 Circular light emission part 22 Light emitting diode 24 LED module 26 Circuit component 28 Transformer built-in type module 30 External housing 32 Translucent window 34 Opening 36 Fixing wing 38 Fitting convex part 40 Circular lid body 50 Fixing spring body 52 Spring fixing part 60 Internal housing 62 Opening 64 LED module fixing leg 66 Transformer built-in module fixing leg 68 Fitting recess 70 Wall surface 80 Power cable 90 Power plug 100 Connector

In order to achieve the above object, an embedded LED lighting apparatus according to the present invention is a wall-mounted LED lighting apparatus using a light emitting diode, and the LED lighting apparatus is a circular light emitting device comprising a plurality of light emitting diodes. An outer housing that is a cylindrical housing having a transparent window at one end and an opening that serves as an insertion port for a circular light emitting portion at the other end, and a circular lid that serves as a lid for the opening of the outer housing And an external housing for housing the circular light emitting part in order to keep the illuminance of the LED lighting fixture and to reduce the heat conduction to the outside of the LED lighting fixture by suppressing the temperature rise of the fixture. air inside the housing, between said outer housing said inner housing shorter than the inner diameter outer diameter, comprising a cylindrical body with the open bottom of the irradiation direction of the light emitting diode made of a synthetic resin While forming the insertion and inlaid structure from the opposite side of the irradiation direction.

Claims (5)

In a wall-mounted LED lighting fixture using a light-emitting diode,
The LED luminaire includes a circular light emitting portion including a plurality of light emitting diodes, and an external housing serving as a cylindrical housing having a light transmitting window at one end and an opening serving as an insertion port for the circular light emitting portion at the other end. A circular lid that serves as a lid for the opening of the outer housing, and a fixing spring body.
In order to maintain the illuminance of the LED lighting apparatus and suppress the temperature rise of the apparatus, the outer diameter dimension of the outer housing shorter than the inner diameter dimension of the outer housing that houses the circular light emitting part is from a cylindrical body with a bottom that opens the irradiation direction of the light emitting diode. An embedded LED lighting apparatus, wherein the inner housing is inserted and fitted from the opposite side of the irradiation direction.   2. The circular light emitting unit includes an LED module comprising a circuit component for lighting a light emitting diode, a substrate on which a plurality of light emitting diodes are mounted, and a transformer built-in module on which a voltage conversion transformer chip is mounted. The embedded LED luminaire described. The circular light emitting unit is equipped in the inner housing so that the opening side of the inner housing becomes an LED module,
3. The embedded LED lighting device according to claim 1, wherein the inner housing is provided in the outer housing such that the opening of the inner housing is on the light transmitting window side.   4. The embedded LED lighting apparatus according to claim 1, wherein the outer housing is provided with a fixing wing having an outer diameter dimension longer than that of the outer housing.   5. The embedded LED lighting device according to claim 1, wherein the inner housing is made of plastic.

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