JP3169673U - LED lamp - Google Patents

Abstract

An LED lamp that prevents deterioration of an LED chip due to heat generation on a power supply side and that can be easily replaced is provided. A plurality of LED chips, a metal substrate for supporting the plurality of LED chips, a support member for arranging and holding a plurality of the metal substrates in a circumferential direction, a base for supplying DC power to the metal substrate, Each electrode of the base and the electrode provided on the metal substrate are connected by a cable, respectively, a transparent cover that covers a support member on which the metal substrate is disposed, and a heat dissipation member that radiates heat through the cover It was. [Selection] Figure 1

Description

  The present invention relates to a lamp using an LED chip, and more particularly to an LED lamp that is used for lighting fixtures such as street lights and emergency lights, and that can be easily replaced and has little LED chip deterioration.

  In recent years, lighting fixtures using LEDs have been widely adopted. In particular, a technique for ensuring the required illuminance by using a large number of high-brightness LEDs for lamps used for street lamps has been widely adopted.

  The above-mentioned lamp is usually used in which a plurality of LED chips are mounted on a printed circuit board. The LED chips are driven by current supplied from an external power supply device, and are provided at appropriate locations around the circuit board. It is used as a luminaire that efficiently reflects and irradiates light with the reflector.

  On the other hand, many bulb-type LED lamps using a base, which is a conventional mounting member for illumination, have been put on the market, have long lifespans, and have reduced power consumption. For example, an LED lamp including a plurality of LED chips, a conduction support member for supporting the plurality of LED chips, and a base for supplying power to the plurality of LED chips through the conduction support member is proposed. (See Patent Document 1).

JP 2010-182796 A

  The technology described in Patent Document 1 supplies AC power from a connecting instrument such as a mercury lamp used conventionally to a conduction support member through a base, and converts it into direct current within the lamp to cause the LED chip to emit light. Thus, it is possible to perform power-saving illumination as compared with a mercury lamp, but a substrate for performing AC / DC conversion is required in the lamp, resulting in an increase in cost. Moreover, there is a problem that the LED chip deteriorates due to heat generated from the substrate.

  In view of the above problems, the present inventors have provided an LED lamp capable of supplying DC power from a conventionally used fixture through a base and irradiating the surrounding area with uniform light.

  The LED lamp of the present invention includes a plurality of LED chips, a metal substrate that supports the plurality of LED chips, a support member that holds a plurality of the metal substrates arranged in the circumferential direction, and supplies DC power to the metal substrate. Each of the electrodes of the base and the electrodes provided on the metal substrate are connected by cables, and a transparent cover that covers the support member on which the metal substrate is disposed, and heat dissipation that radiates heat through the cover The first feature is that a member is provided.

  Further, the support member is made of a metal material such as aluminum having excellent thermal conductivity, and is composed of a plurality of flat plates arranged evenly around a cylinder, and radiates heat generated in the LED chip to the outside. The second feature is that the member can be connected.

  According to the LED lamp of the present invention, a plurality of LED chips, a metal substrate that supports the plurality of LED chips, a support member that holds a plurality of the metal substrates arranged in the circumferential direction, and a direct current on the metal substrate. A base for supplying power is provided, and each electrode of the base and the electrode provided on the metal substrate are connected by cables, respectively, and it is not necessary to install a power supply substrate for performing AC / DC conversion in the lamp, and it is inexpensive. In addition, the LED chip can be prevented from deteriorating due to heat generated from the power supply substrate.

  Further, the support member is made of a metal material such as aluminum having excellent thermal conductivity, and includes a plurality of flat plates arranged evenly around a cylinder, and dissipates heat generated in the plurality of LED chips to the outside. Since the heat dissipation member can be connected, the heat generated from the plurality of LED chips can be efficiently radiated from the heat dissipation member to the outside via the metal substrate and the support member.

It is front explanatory drawing which shows one Example of the LED lamp which concerns on this invention. FIG. 2 is an explanatory plan view of FIG. 1. It is an isometric view explanatory drawing of the LED lamp which concerns on this invention.

  Hereinafter, although this invention is demonstrated, referring drawings which show an Example, it cannot be overemphasized that this invention is not limited to a present Example. 1 is a front explanatory view showing an embodiment of the LED lamp of the present invention, FIG. 2 is a plan explanatory view of FIG. 1, and FIG. 3 is a perspective explanatory view of the LED lamp according to the present invention.

  As shown in FIGS. 1 to 3, the LED lamp 1 of the present invention is mounted on a support member 2, a metal substrate 3 attached in thermal contact with the outer peripheral surface of the support member 2, and a surface of the metal substrate 3. The transparent cover 7 covering the outer periphery of the support member 2 is attached with a heat radiating member 8 connected to the support member 2. It has been.

  The support member 2 is formed of a metal such as Al having high heat dissipation, and the center portion thereof is cylindrical, and the support portion 2b having a substantially rectangular shape via a plurality of protrusions 2a protruding uniformly from the outer peripheral surface. Are formed apart from each other, and the metal substrate 3 can be mounted on the outer peripheral surface of the support portion 2b. A flange portion 21 that receives a transparent cover 7 to be described later is formed on one end side of the support member 2, and the same metal as that of the support member 2 is used, and heat is generated from the metal substrate 3 through the flange portion 21. The heat can be dissipated.

  The metal substrate 3 is a substrate made of a metal base such as Al, and a wiring pattern (not shown) is formed on the surface via an insulating layer. A plurality of LED chips 4 and electrodes 9 are mounted at predetermined positions on the surface of the metal substrate 3, and are connected to electrodes in a base 6 described later by cables. And the metal substrate 3 is attached to the support part 2b of the support member 2 by the adhesion | attachment by a heat conductive adhesive, or a screw | thread. In addition, the circuit and components which convert alternating current power into direct current power are not mounted in this metal substrate 3.

  The base 6 is attached to a socket (not shown) of a mercury lamp fixture and supplies DC power from the power supply device. As the size of the base 6, a general E26 type or E39 type is adopted, and a negative side electrode portion 6a in which a screw thread for socket fitting is formed and a positive side electrode provided via an insulator 6b Part 6c. The base 6 is connected to the support member 2 via an insulating member 5 such as a synthetic resin.

  Further, the negative electrode portion 6a and the positive electrode portion 6c of the base 6 are connected to the electrode 9 of the metal substrate 3 by a cable (not shown), respectively, and direct current power supplied from an external DC power source is supplied to the metal substrate 3. To turn on the plurality of LED chips 4.

  The transparent cover 7 covering the outer periphery of the support member 2 is made into a cup shape by extruding a transparent synthetic resin, and is detachably attached to the support member 2 to which the metal substrate 3 is attached by screws 10. A transparent resin such as an acrylic resin is used as the material of the transparent cover 7, but it may be a synthetic resin that has been subjected to a semi-transparent treatment if necessary, and within a range that can secure the required illuminance. It is selected appropriately.

  The heat radiating member 8 is made of an Al disk, and is fixed to the outer bottom surface of the transparent cover 7 with screws 10 and is capable of conducting heat with the support member 2.

  Next, the operation of the LED lamp of the present invention will be described.

  The LED lamp 1 of the present invention employs an E26 type or E39 type that can be mounted on a socket of a mercury lamp mounting fixture on the base 6, so that the replacement work is facilitated. In addition, since a plurality of LED chips 4 are used as the light source, power consumption is low, and long-term use is possible.

  In addition, since DC power is used as a power source, no power source substrate for AC / DC conversion is required in the LED lamp 1, and therefore the LED chip 4 is not deteriorated due to heat generated from the power source substrate.

  Then, heat generated from the plurality of LED chips 4 is radiated to the outside from the flange portion 21 and the heat radiating member 8 via the support member 2.

  As described above, according to the LED lamp of the present invention, a plurality of LED chips, a metal substrate that supports the plurality of LED chips, a support member that holds a plurality of the metal substrates arranged in the circumferential direction, and the metal substrate. A base for supplying DC power, and each electrode of the base and the electrode provided on the metal substrate are connected by a cable, and there is no need to install a power supply substrate for AC / DC conversion in the lamp. The LED chip can be produced at low cost, and the LED chip can be prevented from being deteriorated by heat generated from the power supply substrate. Further, the support member is made of a metal material such as aluminum having excellent thermal conductivity, and includes a plurality of flat plates arranged evenly around a cylinder, and dissipates heat generated in the plurality of LED chips to the outside. Since the heat dissipating member can be connected, the heat generated from the plurality of LED chips can be efficiently dissipated from the heat dissipating member to the outside through the metal substrate and the support member.

DESCRIPTION OF SYMBOLS 1 LED lamp 2 Support member 2a Protrusion part 2b Support part 3 Metal substrate 4 LED chip 5 Insulation member 6 Base 6a Negative side electrode part 6b Insulator 6c Positive side electrode part 7 Transparent cover 8 Heat radiation member 9 Electrode 10 Screw 21 Flange part

Claims (2)

  A plurality of LED chips, a metal substrate that supports the plurality of LED chips, a support member that holds a plurality of metal substrates arranged in the circumferential direction, and a base that supplies DC power to the metal substrate, Each electrode of the base and the electrode provided on the substrate are each connected by a cable, and further include a transparent cover that covers a support member on which the metal substrate is disposed, and a heat dissipation member that radiates heat through the cover. LED lamp to do. The support member is formed of a metal material such as aluminum having excellent thermal conductivity, and includes a plurality of flat plates arranged evenly around a cylinder. The heat dissipation member dissipates heat generated in the LED chip to the outside. The LED lamp according to claim 1, wherein the LED lamp is connectable.

Images