JP2011165506A - Led lamp and led lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED lamp that has high versatility and is made compact as a whole, even if adopting a light diffusion body, and contributes to development of a variety of products. <P>SOLUTION: The LED lamp includes a chip substrate 6 having an LED element, a control circuit 3 that handles lighting control of the LED element of the chip substrate 6, an outer shell case 4 that surrounds the control circuit 3 with a shape of bottomed sleeve and carries the chip substrate at the bottom and serves as a heat dissipation member of the chip substrate 6. The outer shell case 4 is connected to a power supply source 15 while being directly fixed to a building material 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an LED lamp and an LED lighting apparatus.

  In recent years, the demand for ecology has been increasing, and in the field of lighting equipment, development of light bulbs or lighting equipment that is conscious of energy conservation is progressing. In particular, an LED lamp provided with a light emitting diode (LED) as a light source consumes significantly less power than a conventional incandescent light bulb, and thus its practical application is being promoted as a light bulb type illumination.

  Conventionally, LED lamps that have been developed in a light bulb type are generally of a type in which an LED is attached to an Edison-type base and a base is attached to a socket (Patent Document 1).

  By the way, since LED has strong light straightness, it is necessary to diffuse light emitted from the LED lamp. Therefore, in the configuration disclosed in Patent Document 1, a light diffuser facing the LED is provided along the irradiation direction of the LED, and the light irradiated from the LED is reflected by the light diffuser and diffused.

  In addition, LEDs are also known for their high exothermic properties, and heat dissipation measures are indispensable. Therefore, in the conventional LED lamp, a cylindrical body having a heat radiation fin is provided between the base and the LED, and the distance from the LED to the base is taken with this cylindrical body to take measures for heat radiation.

JP 2002-208305 A

  However, in the configuration in which the cylindrical body as described above is provided between the LED and the base, the total length of the LED lamp becomes long, which is a great limitation in design. For this reason, nearly 2/3 of the entire area is a shadow area where light does not reach from the LED, and it is fatal for applications such as hanging equipment, chandelier equipment, direct attachment equipment, and other thin compact equipment that place emphasis on light and equipment design. It was a flaw.

  In particular, conventional lighting fixtures are designed based on the idea that LED lamps can be detachably attached to mounting members such as Edison-type caps and hook ceilings under the influence of the relatively short life of the bulb. It had been. For this reason, it has become difficult to design with the compactness and product development required in recent years.

  The present invention has been made in view of the above problems, and is highly versatile. Even when a light diffuser is used, the LED lamp can be made compact as a whole and can ensure the development of various products. It is an object to provide an LED lighting apparatus.

  As a result of diligent research, the present invention pays attention to extending the lifetime of the LED, and solves the above-mentioned problems by effectively utilizing the heat dissipation structure of the LED as a means for diffusing the irradiated light while taking advantage of its long-life characteristics. As a result, the present invention has been completed.

  That is, the present invention presents a chip substrate having an LED element, a control circuit for controlling the lighting of the LED element of the chip substrate, and a bottomed sleeve shape surrounding the control circuit, and the chip substrate is supported on the bottom. And an outer shell case serving also as a heat radiating member of the chip substrate, wherein the outer shell case is directly fixed to the construction material and connected to a power supply. In this aspect, the outer shell case that supports the chip substrate at the bottom can be used as a heat radiator, and the outer shell case as the heat radiator is connected to the power supply in a state of being directly fixed to the construction material. Therefore, the Edison-type base can be abolished, and the length in the irradiation direction can be set shorter. This configuration is completely different from the conventional idea of installing a lighting fixture on a construction material and attaching the illumination lamp to the lighting fixture. An LED lamp with a long life is directly attached to the construction material and fixed. It is possible to construct various lighting fixtures by attaching predetermined members. As a result, a wide variety of lighting fixtures can be designed and constructed with the LED lamp of the common specification as the core. The “building material” is assumed to be a wall or ceiling of a building structure. However, in the present invention, not only the wall and ceiling, but also an appliance (for example, an arm-type lighting fixture, wall light) fixed to the wall or ceiling. , Chandelier, pendant, etc.).

  In a preferred aspect, a mount portion for detachably mounting a lamp cover that covers the outer shell case is provided. In this aspect, it is possible to appropriately change the design of the lamp cover according to the specifications for which the LED lamp is constructed to meet a wide variety of design needs. In addition, since the lamp cover can be attached to the outer shell case, it is possible to provide LED lamps suitable for a wide variety of LED lighting fixtures.

  In a preferred aspect, the mount portion is formed on the outer shell case.

  In a preferred aspect, the mount portion is formed on an auxiliary member attached to the outer shell case.

  In a preferred aspect, the mount portion of the outer shell case is detachably provided with an auxiliary member for attaching a large lamp cover. In this aspect, the generalization of the outer shell case can be further promoted.

  In a preferred aspect, the mount portion also serves as an attachment site for attaching the outer shell case to a downlight hood embedded in the ceiling. In this aspect, since it can be attached to the hood of the downlight by a relatively easy operation, it becomes possible to provide an embedded downlight that is easy to construct.

  In a preferred embodiment, a light diffuser is detachably attached to a portion protruding from the center portion of the chip cover. As the light diffusing body mounting structure, a screw or the like is preferable.

  Another aspect of the present invention is an LED lighting apparatus comprising the above-described LED lamp and a light-transmitting lamp cover that is detachably attached to the LED lamp. In this aspect, it is possible to develop LED lighting fixtures having extremely various variations with a highly versatile LED lamp as a core.

  In a preferred aspect, the LED lighting apparatus includes a downlight hood provided on the LED lamp.

  As described above, according to the present invention, the outer shell case that functions as a heat radiator is also functioned as a light diffuser based on a completely novel idea of providing an instrument for an LED lamp. It has a remarkable effect that it can be made compact and the development of various products can be secured.

It is sectional drawing which shows the structure of the LED lamp which concerns on one Embodiment of this invention. It is a disassembled perspective view of the LED lamp of FIG. FIG. 2 is a schematic cross-sectional view of a main part showing an enlarged main part of the LED lamp of FIG. 1. It is a principal part cross-sectional schematic which expands and shows the modification of the LED lamp of FIG. It is principal part sectional schematic drawing which expands and shows another modification of the LED lamp of FIG. FIG. 6 is a schematic cross-sectional view of an essential part showing a modified example of FIG. FIG. 2 is a partial cross-sectional schematic diagram illustrating an enlarged ceiling lighting apparatus using the LED lamp of FIG. 1. It is the fragmentary sectional schematic drawing which expands and shows another ceiling lighting fixture using the LED lamp of FIG. It is the fragmentary sectional schematic drawing which expands and shows another ceiling lighting fixture using the LED lamp of FIG. It is the partial cross-section schematic which expands and shows the pendant using the LED lamp of FIG. FIG. 2 is a schematic partial cross-sectional view showing an enlargement of a universal arm type lighting fixture using the LED lamp of FIG. 1. It is the partial cross-section schematic which expands and shows the wall light using the LED lamp of FIG. FIG. 2 is a schematic partial cross-sectional view showing an enlarged downlight using the LED lamp of FIG. 1.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view showing a configuration of an LED lamp 1 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the LED lamp 1 of FIG.

  First, referring to FIG. 1 and FIG. 2, an LED lamp 1 according to this embodiment includes a lighting circuit unit 3, an outer shell case 4 that houses the lighting circuit unit 3, and an outer shell case 4. A heat conductive plate 5 fixed to the bottom portion 4a, a chip substrate 6 fixed on the heat conductive plate 5, and a chip cover 7 for sealing the chip substrate 6 together with the heat conductive plate 5 to the bottom portion 4a are provided. The LED lamp 1 of the present embodiment has the outer shell case 4 directly fixed to a ceiling 16 as a construction material, and a power supply main part such as the lighting circuit unit 3 is provided as a power supply power lined in the ceiling 16. Power is supplied from the power supply line 15. Power supply from the power supply line 15 is operated by a power switch (not shown) provided in the room.

  The lighting circuit unit 3 includes a resin case 3a formed in a cup shape with a bottom, a lighting circuit board 3b seated on a shoulder formed on the inner bottom of the case 3a, and the lighting circuit board 3b. Lighting circuit element 3c. A flange 3 d is formed at the upper end of the case 3 a, and this flange 3 d is fixedly held in a state where it is seated on a shoulder formed on the inner periphery of the outer shell case 4. The lighting circuit element 3c includes a rectifier circuit, a capacitor, a resistor, a transistor, and the like. The lighting circuit element 3c is electrically connected to the chip substrate 6 fixed to the bottom portion of the outer shell case 4 via a wiring not shown, and controls lighting of the LED elements provided on the chip substrate 6. A control circuit is configured.

  The outer shell case 4 includes the bottom portion 4a that supports the chip substrate 6, a tapered sleeve 4b that is continuous with the bottom portion 4a, a flange portion 4c that extends on the upper edge of the tapered sleeve 4b, and a flange portion 4c. It is a cylindrical body provided with a cylindrical sleeve 4d that is concentrically connected to the outer periphery of the tapered sleeve 4b and that extends upward in a state where a part thereof hangs downward from the flange portion 4c. The outer shell case 4 is made of high-purity aluminum and is formed into a shape shown in the drawing by a method such as press molding or die casting, and then the surface is etched and anodized. The tapered sleeve 4b is tapered so that the lower side becomes narrower with a gradient of about 2 °, for example. As will be described in detail later, the outer peripheral surface 4e of the tapered sleeve 4b diffuses the light irradiated by the LED element. A reflecting peripheral surface is formed. A rectangular recess 4h is formed in the bottom 4a of the outer shell case 4, and the heat conduction plate 5 is fitted in the recess 4h. Further, a mounting flange 4j formed of a separate member is screwed to the upper part of the outer shell case 4, and the LED lamp 1 is directly fixed to the ceiling 16 via the mounting flange 4j. .

  The heat conductive plate 5 is a metal plate having a higher thermal conductivity than the outer shell case 4 such as copper. A chip substrate 6 is fixed to the lower surface of the heat conductive plate 5, and heat generated from the chip substrate 6 propagates to the outer shell case 4 through the heat conductive plate 5 and is radiated from the entire outer shell case 4. It has become so. In addition, in this embodiment, the surface is finished in a mirror shape so that the heat conducting plate 5 functions as a reflecting plate that reflects light.

  The chip substrate 6 is a planar member that carries the LED element, is attached to the heat conductive plate 5, and is configured to be able to irradiate light downward based on the control of the lighting circuit unit 3.

  The chip cover 7 is made of a resin or glass having heat resistance and light transmission and diffusibility, and is fixed to the bottom portion 4a in a state in which airtightness and liquid tightness are ensured to seal the chip substrate 6. . In the present embodiment, the chip cover 7 is made of a material having high light transmittance, and the boundary surface 7a can reflect a part of the light emitted from the LED element of the chip substrate 6 to the outer shell case 4 side. It is like that. As shown in FIG. 1, the outer peripheral portion of the chip cover 7 bulges in the radial direction from the bottom portion of the outer shell case 4, and a part of the light reflected by the boundary surface 7 a is transferred to the outer peripheral surface of the outer shell case 4. It can be guided. As a result, as shown in FIG. 3, the light reflected from the boundary surface 7a of the chip cover 7 is reflected on the outer peripheral surface of the outer shell case 4, and surface treatment (etching finish or anodizing treatment) applied to the outer peripheral surface. In addition to the fine uneven surface formed by the above, the surface of the chip substrate 6 is further diffused.

  In the above configuration, when the power switch (not shown) is turned on, the lighting circuit unit 3 functions as a control circuit, and the LED elements on the chip substrate 6 emit light. As shown in FIG. 3, a part of the light emitted from the LED element is transmitted through the chip cover 7 to illuminate the outside, and a part of the light is reflected from the chip cover 7, so that the tapered sleeve of the outer shell case 4 is formed. 4b and the heat conduction plate 5 are guided. Next, these lights are diffusely reflected and irradiated outside as uniform diffused light. As a result, it becomes possible to irradiate light that is relatively homogeneous and high in luminous intensity.

  As described above, the LED lamp 1 of the present embodiment includes the chip substrate 6 having LED elements, the lighting circuit unit 3 as a control circuit that controls the lighting of the LED elements of the chip substrate 6, and the lighting circuit unit. 3 has a bottomed sleeve shape surrounding 3, and supports the chip substrate 6 on the bottom 4 a and also serves as a heat dissipation member of the chip substrate 6, and is provided on the bottom 4 a of the outer shell case 4. A chip cover 7 that seals 6 to the bottom 4 a, a boundary surface 7 a that is provided on the chip cover 7 and serves as a cover-side reflecting surface that guides the irradiation light from the LED element to the outer periphery of the outer shell case 4, and the outer shell case 4 And an outer peripheral surface 4e as a reflective peripheral surface that diffuses and reflects the irradiation light reflected from the boundary surface 7a, and is directly fixed to the ceiling 16 while being connected to a power supply. That.

  For this reason, in the present embodiment, the outer shell case 4 carrying the chip substrate 6 on the bottom 4a can be used as a radiator, and the outer shell case 4 as a radiator is also used as a diffuse reflector of irradiated light. Therefore, an optical path for sufficiently diffusing the irradiation light can be secured. Therefore, even if the distance in the direction in which the LED elements are irradiated from the chip substrate 6 is shortened as much as possible, uniform diffused light can be obtained, and the entire length can be compacted. In addition, by using the outer shell case 4 as a diffuse reflector for the irradiated light, the light transmission portion can be designed to be significantly wider. As a result, in the conventional LED lamp, it is possible to expand the illumination area having only 1/3 of the total length to more than 1/2 of the total length. Moreover, since it is the structure connected to a power supply in the state directly fixed to the ceiling 16, an Edison-type nozzle | cap | die can be abolished and the length of an irradiation direction can be set still shorter. This configuration is completely different from the conventional idea of providing a lighting fixture on the ceiling and attaching the lighting lamp to the lighting fixture. The LED lamp 1 having a long life is directly attached to the ceiling 16 and fixed. It is possible to construct various lighting fixtures by attaching predetermined members to 1. As a result, a wide variety of lighting fixtures can be designed and constructed with the LED lamp 1 of the common specification as the core.

  Further, in the present embodiment, the tapered sleeve 4b of the outer shell case 4 is formed in a tapered shape with a narrow bottom side, and the outer peripheral surface of the chip cover 7 bulges out from the bottom in the radial direction. It faces. For this reason, in this embodiment, irradiation light can be more efficiently guided from the chip cover 7 to the outer peripheral surface 4e of the outer shell case 4, and more light can be diffused. In addition, the outer casing 4 can be easily manufactured by providing a gradient (about 2 ° in the present embodiment).

  In the present embodiment, the outer shell case 4 is made of an aluminum material, and the reflection peripheral surface is subjected to etching finishing and anodizing. For this reason, in this embodiment, the heat dissipation performance of the outer shell case 4 is enhanced, the life of the lighting circuit unit 3 surrounded by the chip substrate 6 and the outer shell case 4 can be extended, and the heat dissipation performance is not impaired. The thickness of the outer shell case 4 can be reduced, which contributes to weight reduction and material saving. In addition, the reflection efficiency of the irradiation light by the reflection peripheral surface is improved.

  In the present embodiment, the chip substrate 6 is fixed to the bottom portion 4 a via the heat conducting plate 5. For this reason, in this embodiment, the heat generated by the LED elements on the chip substrate 6 can be quickly transferred from the heat conducting plate 5 to the outer shell case 4 having a large heat capacity, and the heat dissipation effect can be more efficiently generated. it can.

  The above-described embodiments are merely preferred specific examples of the present invention, and the present invention is not limited to the above-described embodiments.

  As the chip cover 7, the configuration shown in FIG. 4 can be adopted.

  Referring to FIG. 4, the chip cover 7 shown in FIG. 4 has a reflecting surface 7b dotted on the boundary surface 7a by aluminum vapor deposition, and the reflecting surface 7b actively reflects the irradiation light. When this configuration is employed, the chip cover 7 does not necessarily need to be configured with a half mirror. In the configuration of FIG. 4, the light emitted from the LED elements of the chip substrate 6 can be diffused also by the chip cover 7 itself, and a part of the light is guided to the outer shell case 4 to It can diffuse by the outer peripheral surface 4e.

  Further, as shown in FIG. 5, a light diffuser 17 facing the lower surface of the chip cover 7 is provided, and the light diffuser 17 reflects the irradiation light to the side part of the LED lamp 1 and the outer shell case 4. Also good.

  Preferably, the light diffuser 17 is formed with a small light transmission hole 17a so that 50% of the light can be transmitted.

  Further, as shown in FIG. 6, when forming the light transmission hole 17a, it is preferable to form an inclination on the peripheral surface of the light transmission hole 17a. In that case, a part of the light incident on the light transmission hole 17a is reflected by the peripheral surface and diffused.

  In each aspect, the light diffuser 17a is detachably fixed to the outer shell case 4 with screws or the like.

  Moreover, in this invention, it becomes possible to construct | assemble various LED lighting fixtures by using the LED lamp 1 which concerns on embodiment mentioned above as a nucleus. In the example of FIG. 1, it is possible to construct a ceiling illumination 20 as shown in FIG. 7 by mounting the lamp cover 8 on the LED lamp 1 fixed to the ceiling 16.

  The lamp cover 8 is a resin glove having transparency. The lamp cover 8 may be a shade that is partially opened.

  In order to cover the lamp cover 8, the outer shell case 4 of this embodiment includes a mount portion 4f formed between the tapered sleeve 4b and the cylindrical sleeve 4d and continuous with the bottom surface of the flange portion 4c. The upper end portion of the lamp cover 8 is fitted and held in the mount portion 4f. Although not shown in the drawing, a screw or a notch is provided at an appropriate position of the mount portion 4f, and the upper end portion of the lamp cover 8 is detachably fitted only by a predetermined operation. It is devised not to. For this reason, in this embodiment, for example, as shown in FIG. 8, a lamp cover 8 composed of a glove having a specification different from that shown in FIG. Accordingly, the design of the lamp cover 8 can be appropriately changed to meet various design needs. In addition, since the lamp cover 8 can be attached to the outer shell case 4, it is possible to provide the LED lamp 1 suitable for various LED lamps 1.

  Next, various modes can be adopted as the mount portion of the lamp cover 8 that covers the outer shell case 4.

  For example, as shown in FIG. 1, another ceiling illumination 20 may be configured by forming an annular mount portion 4 g on the outer peripheral portion of the cylindrical sleeve 4 d and fitting a larger globe 8. Further, as shown in FIG. 9, an auxiliary member 18 made of another member may be provided on the mount portion 4 g, and the globe 8 may be fixed to the LED lamp 1 via the auxiliary member 18.

  Moreover, as shown in FIG. 10, it is possible to employ | adopt LED lamp 1 as a lamp | ramp of the pendant 25 which one part functions as a construction material.

  Or as shown in FIG. 11, it is possible to employ | adopt LED lamp 1 as a lamp | ramp of the arm type lighting fixture 26 in which one part functions as a construction material.

  Moreover, as shown in FIG. 12, it is possible to employ | adopt LED lamp 1 as a lamp | ramp of the wall light 27 in which one part functions as a construction material. In the example shown in FIG. 12, a plurality of mounting portions are provided on the outer shell case 4, and a small globe 28 is attached to one mounting portion, and a large shade 29 is attached to the other mounting portion. The LED lamp 1 is configured as an LED lighting fixture for wall light with the LED lamp 1 as a core.

  Or you may employ | adopt the structure of FIG. 12 for a chandelier.

  Furthermore, the downlight 30 can also be configured using the LED lamp 1 shown in FIG.

  For example, in the example shown in FIG. 13, the hood 31 is embedded in the ceiling 16 and the LED lamp 1 is mounted in the hood 31. The hood 31 has a plurality of wing springs 32 at appropriate positions in the circumferential direction, and is fixed to the ceiling 16 by sandwiching the ceiling 16 together with the decorative panel 33 provided at the lower end. Moreover, the inner peripheral surface 31a of the hood 31 constitutes a reflective surface suitable for irregularly reflecting the light of the LED lamp 1 toward the indoor side.

  Further, in the example shown in FIG. 13, the mount portion 4g provided on the cylindrical sleeve 4d of the outer shell case 4 is used as a mounting portion, and the fitting portion 31b provided on the hood 31 is fitted to the mount portion 4g. In combination, a hood 31 is attached to the LED lamp 1, and the LED lamp 1 is fixed to the ceiling 16 via the hood 31. Since the mount portion 4g of this example also serves as a mounting portion for mounting the outer shell case 4 on the hood of the downlight 30 embedded in the ceiling, the construction of the downlight 30 becomes extremely easy. Therefore, the versatility of the LED lamp 1 can be improved, and a wider variety of products can be developed with the same specifications.

  The above-described embodiment is merely a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment. For example, the heat conductive plate 5 and the recess 4h may be omitted, and the chip substrate 6 may be directly fixed to the bottom 4a. It goes without saying that various modifications can be made within the scope of the claims of the present invention.

1 LED lamp 3 Lighting circuit unit (an example of a control circuit)
4 outer shell case 4a bottom 4b tapered sleeve 4e outer peripheral surface (reflection peripheral surface)
4f, 4g Mount portion 5 Thermal conductive plate 6 Chip substrate 7 Chip cover 7a Boundary surface (an example of a cover-side reflective surface)
8 Lamp cover 15 Power supply line 16 Ceiling 17 Light diffuser 18, 19 Auxiliary member 20 Ceiling illumination (an example of LED lighting apparatus)
25 Pendant (Example of LED lighting equipment)
26 Arm-type lighting fixture (example of LED lighting fixture)
27 Wall Light (Example of LED lighting equipment)
28 Globe (an example of a lamp cover)
29 SEED (an example of a lamp cover)
30 Downlight (Example of LED lighting fixture)
31 Food

Claims (9)

A chip substrate having an LED element;
A control circuit for controlling the lighting of the LED elements of the chip substrate;
Presenting a bottomed sleeve shape surrounding this control circuit, carrying the chip substrate on the bottom and an outer shell case that also serves as a heat dissipation member of the chip substrate;
A chip cover provided on the bottom portion of the outer shell case and sealing the chip substrate on the bottom portion; and the outer shell case is connected to a power supply in a state of being directly fixed to a construction material. LED lamp. The LED lamp according to claim 1, wherein
An LED lamp, comprising: a mount portion for detachably mounting a lamp cover that covers the outer shell case. The LED lamp according to claim 2,
The LED lamp, wherein the mount portion is formed on the outer shell case. The LED lamp according to claim 2,
The mount part is formed in the auxiliary member with which the outer shell case was mounted | worn. The LED lamp characterized by the above-mentioned. The LED lamp according to claim 2,
The mount part includes an auxiliary member for attaching a large lamp cover in a detachable manner. The LED lamp according to claim 2,
The mount portion also serves as a mounting portion for mounting the outer shell case on a hood of a downlight embedded in the ceiling. The LED lamp according to any one of claims 1 to 6,
An LED lamp, wherein a light diffuser is detachably attached to a portion protruding from the center of the chip cover. The LED lamp according to any one of claims 1 to 7,
An LED lighting fixture comprising: a light-transmitting lamp cover that is detachably attached to the LED lamp. The LED lighting apparatus according to claim 8,
An LED lighting apparatus comprising a downlight hood provided on the LED lamp.

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