JP2011187188A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire preventing mounting a general incandescent lamp and suppressing the temperature rise of LEDs. <P>SOLUTION: The luminaire includes: an LED lamp 1 having a substrate 11 mounted with a LED 17, a heat conductive member 12 thermally connected to the substrate 11 and exposed to the outer surface, and a base 15 provided on one end side and electrically connected to the LED 17; and a luminaire body 2 having a socket 23 to which the base 15 of the LED lamp 1 is mounted, and a heat conductive erroneous mounting preventing structure 3 preventing the general incandescent lamp from being mounted to the socket 23 and thermally connected to the heat conductive member 12 when the LED lamp 1 is mounted to the socket 23. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a luminaire that uses an LED lamp as a light source.

  Recently, an LED has been used as a light source for illumination. For example, a light bulb-shaped LED lamp capable of realizing energy saving and long life has been put on the market. This LED lamp has an E-type base, and has attracted attention as a substitute for a general incandescent bulb.

  In addition, lighting fixtures intended for application of LED lamps as light sources have been developed. However, if a general incandescent bulb is mounted on this lighting fixture, the incandescent bulb has a high temperature load due to the high temperature during lighting, and may exceed the allowable temperature of wiring-related members, for example. is there. On the other hand, when it is assumed that an incandescent bulb is attached, it is necessary to take measures against the temperature by using a member having a high heat-resistant temperature in order to ensure heat resistance.

  Furthermore, it is known that the LED brings about changes in various characteristics such as a decrease in light output and shortens the lifetime as its temperature rises. Therefore, in a lighting fixture using an LED as a light source, it is necessary to suppress an increase in temperature of the LED in order to improve various characteristics and lifetime.

  2. Description of the Related Art Conventionally, there is known a lighting fixture intended for application of a bulb-type fluorescent lamp that eliminates the case where a general incandescent bulb is attached and eliminates the need for a temperature countermeasure member (Patent Document 1). reference).

JP 2001-256804 A

  However, the one disclosed in Patent Document 1 is intended for application of a light bulb type fluorescent lamp, and is not intended for application of an LED lamp. Therefore, although the case where an incandescent lamp is attached is excluded, at the same time, as a matter of course, attention is paid to the characteristics of the LED, and the temperature rise of the LED is not suppressed.

  This invention is made | formed in view of the said subject, and it aims at providing the lighting fixture which can suppress mounting | wearing of a general incandescent lamp and can suppress the temperature rise of LED.

  The lighting fixture according to claim 1 is provided on one end side, which is electrically connected to the LED, a board on which the LED is mounted, a heat conduction member that is thermally coupled to the board and exposed to the outer surface, and the LED. An LED lamp provided with a base, a socket to which the base of the LED lamp is attached, and a general incandescent light bulb are prevented from being attached to the socket, and when the LED lamp is attached to the socket, the heat conducting member is heated. And an instrument body provided with an erroneous attachment preventing means having thermal conductivity that is coupled to each other.

  The LED is preferably mounted by a surface mounting method or a chip-on-board method in which an LED bare chip is directly mounted on a substrate. However, the mounting method is not particularly limited due to the nature of the present invention.

The heat conducting member can be constituted by, for example, a main body that forms the outer shell of the lamp. Further, since the heat conducting member is exposed on the outer surface, the erroneous mounting preventing means can be easily thermally coupled.
The mis-mounting prevention means is only required to prevent the mounting of a general incandescent bulb and to be thermally coupled to the heat conducting member, and its constituent materials and forms are not particularly limited.

  Moreover, although the downlight using an LED lamp is suitable as a lighting fixture, it is not restricted to this. It can be applied to various lighting fixtures used indoors or outdoors.

  According to the first aspect of the present invention, it is possible to provide a lighting fixture that can prevent the mounting of a general incandescent bulb and can suppress the temperature rise of the LED.

It is a perspective view which shows the LED lamp which concerns on the 1st Embodiment of this invention. It is a front view which shows the LED lamp. It is a front view which shows the part covered with the globe in the LED lamp in a cross section. It is sectional drawing which shows schematic structure of the lighting fixture. It is a front view which shows the state which mounted | wore the lighting fixture of FIG. 4 with the LED lamp. It is a front view which shows the LED lamp which concerns on the 2nd Embodiment of this invention. FIG. 6 corresponds to FIG. 5 of the first embodiment, and is a front view showing a state in which an LED lamp is mounted on a lighting fixture. It is a perspective view which shows an incorrect mounting | wearing prevention means.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3 show a bulb-type LED lamp 1, and FIGS. 4 and 5 show a schematic configuration of a downlight 2 as a lighting fixture to which the bulb-type LED lamp 1 is attached.

  1 to 3, a light bulb shaped LED lamp 1 lights up a substrate 11 on which a plurality of LEDs are mounted (see FIG. 3), a main body 12 as a heat conductive member thermally coupled to the substrate 11, and the LEDs. A lighting device 13 to be controlled, a cover member 14 in which the lighting device 13 is housed, a base 15 attached to the cover member 14, and a glove 16 attached to the main body 12 so as to cover the substrate 11 are configured.

  The board | substrate 11 consists of a substantially circular flat plate of a metal or an insulating material, and LED17 used as a light source is provided. The LED 17 is a bare LED chip, and is directly mounted on the surface of the substrate 11 and is sealed with a phosphor layer. A ceramic material or a synthetic resin material can be applied to the substrate 11. When a synthetic resin material is used, it can be formed of, for example, a glass epoxy resin.

The main body 12 is made of, for example, a metal material such as aluminum having good thermal conductivity, and a cylindrical portion 12a is formed on one end side, and the diameter is gradually enlarged from the cylindrical portion 12a toward the other end side. It has an enlarged diameter portion 12b, and a plurality of radiating fins are formed in the enlarged diameter portion 12b. In addition, the diameter of the cylindrical part 12a is formed in the dimension substantially the same as the diameter of the nozzle | cap | die 15 mentioned later. Further, an attachment surface for attaching the substrate 11 is formed on the other end side (upper side in the drawing) of the main body 12.

  The lighting device 13 is accommodated in a cover member 14 and is configured by mounting circuit components such as a transistor Q and a resistance element R on a circuit board. The lighting device 13 is connected to the LED chip 16 and has a function of controlling lighting thereof.

  The cover member 14 is formed of, for example, an insulating material such as PBT resin, and an insulating portion for insulating between one end side of the main body 12 and the base 15 is provided on the outer peripheral surface of the intermediate portion. A certain flange portion 14a protrudes in the radial direction and is interposed in the entire circumferential direction.

The base 15 is, for example, of the E26 type, and is electrically connected to the lighting device 13 by wiring, and has a cylindrical shell provided with a screw thread that is screwed into the lamp socket of the luminaire main body, And an eyelet provided on the top via an insulating part.
The globe 16 is formed in a spherical shape with glass or synthetic resin having light diffusibility and covers the substrate 11.
Next, with reference to FIG.4 and FIG.5, the mounting state of the downlight 2 as a lighting fixture and the LED lamp 1 with which this downlight 2 is mounted | worn is demonstrated.

  The downlight 2 is installed by being inserted into an embedding hole in the ceiling surface C. The downlight 2 has a cylindrical main body 21 whose lower side is open, and a curved surface that is accommodated in the main body 21 and expands in the light irradiation direction. A reflecting mirror 22, a socket 23, a terminal block 24, and a decorative frame 25 disposed in the irradiation opening of the reflecting mirror 22 are provided. ing.

  The main body 21 is made of metal formed of a cold rolled steel plate or the like, and a reflecting mirror 22 is attached to the inside of the main body 21, and an upper surface wall of the main body 21 is supported on the upper portion of the reflecting mirror 22 by a support fitting (not shown). A socket 23 is attached to the socket. A base 15 of the LED lamp 1 is attached to the socket 23. The terminal block 24 is attached to the upper surface wall of the main body 21, and the socket 23 is electrically connected to the terminal block 24 and a power line is connected to supply power from a commercial power source. ing.

  The incorrect mounting preventing means 3 has a function of making it difficult to mount a general incandescent bulb other than the LED lamp 1 in the socket 23 and preventing the mounting, and conducting heat from the LED lamp 1 to the main body 21 to promote heat dissipation. It is what you have.

  The erroneous mounting preventing means 3 is made of a material having good thermal conductivity such as an aluminum material, has a side surface formed in a substantially L shape, and has a support portion 31 and a contact portion 32. One end side of the support portion 31 is attached to the upper surface wall of the main body 21 by a mounting screw, and a contact portion 32 is provided on the other end side. It is arranged to pass and hang down.

  The abutting portion 32 has an abutting surface 32 a formed in an arc shape along the outer diameter of the columnar portion 12 a of the LED lamp 1. Further, the erroneous mounting preventing means 3 is given a little elasticity in the contact direction so that the contact surface 32a is in close contact with the columnar portion 12a of the LED lamp 1 when the LED lamp 1 is mounted in the socket 23. ing.

  As shown in FIG. 5, the LED lamp 1 is attached to the main body 21 of the downlight 1 configured as described above by screwing the base 15 into the socket 23. In this mounted state, the contact surface 32a of the erroneous mounting preventing means 3 is in close contact with the columnar portion 12a of the LED lamp 1 and comes into surface contact. Therefore, during the lighting of the LED lamp 1, the heat generated from the LED 17 is transmitted from the back surface side of the substrate 11 to the cylindrical portion 12 a of the main body 12, the contact portion 32 of the erroneous mounting preventing means 3, and the support portion 31. It is conducted to the light body 21 and dissipated.

  Thus, simultaneously with mounting the LED lamp 1 on the socket 23, the erroneous mounting preventing means 3 comes into contact with the cylindrical portion 12a of the LED lamp 1, and a mechanism for promoting heat dissipation is completed.

  On the other hand, the allowable mounting diameter φ1 at which the lamp is mounted in the socket 23 by the erroneous mounting preventing means 3 is narrower than that of a lighting fixture used by mounting a general incandescent bulb. As shown in the figure, when trying to attach an incandescent bulb I (for example, E26 type base, total length 98 mm, globe diameter 55 mm), the incandescent bulb I has φ2 having a diameter larger than φ1 in the mounting process. This φ2 portion collides with the tip of the erroneous mounting preventing means 3 and cannot be mounted on the socket 23, thereby preventing the incandescent bulb I from being mounted. Note that a plurality of erroneous mounting preventing means 3 of the present embodiment may be provided.

  As described above, according to the present embodiment, it is possible to prevent the general incandescent bulb I from being mounted and to promote the heat dissipation of the LED 17 and to suppress the temperature rise of the LED 17.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment, or an equivalent, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 6, in the LED lamp 1 of the present embodiment, the main body 12 has one end side formed as a small-diameter columnar portion 12 c and a large-diameter circle from the columnar portion 12 c toward the other end side. It is formed as a columnar part 12d. The small-diameter columnar portion 12 c is formed to have approximately the same size as the diameter of the base 15, and the large-diameter columnar portion 12 d is formed to have approximately the same size as the maximum diameter of the globe 16.

  As shown in FIGS. 7 and 8, the mismounting prevention means 3 is made of, for example, a metal material such as aluminum having good thermal conductivity, is formed in a substantially cylindrical shape, and has flanges 33 and 34 at both ends. Have. The flange 33 on one end (upper side) is attached to the upper surface wall of the main body 21, and the flange 34 on the other end (lower) has the large diameter when the LED lamp 1 is mounted on the socket 23. The cylindrical portion 12d is in contact with the surface on the back surface side so as to be in surface contact. In other words, when the cap 15 of the LED lamp 1 is screwed into the socket 23 and the mounting thereof is completed, the rear surface of the columnar portion 12d and the collar portion 34 are in contact with each other.

  Therefore, during the lighting of the LED lamp 1, the heat generated from the LED 17 passes from the back surface side of the substrate 11 to the downlight main body 21 through the large-diameter cylindrical portion 12 d of the main body 12 and the flange portion 34 of the erroneous attachment preventing means 3. Is conducted and dissipated.

  Further, the allowable diameter φ1 at which the lamp is mounted in the socket 23 by the erroneous mounting preventing means 3 is defined by the inner diameter of the erroneous mounting preventing means 3, and the allowable diameter φ1 that is the inner diameter is narrower than that of a general lighting fixture. Yes. Therefore, as in the first embodiment, when the incandescent light bulb I is to be attached, the incandescent light bulb I collides with the portion of the inner diameter φ1 in the attachment process and cannot be attached to the socket 23.

  As described above, according to the present embodiment, the mounting of the general incandescent bulb I can be prevented and the heat dissipation of the LED 17 can be promoted to suppress the temperature increase of the LED 17 as in the first embodiment. it can.

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 form of the LED lamp and the erroneous attachment preventing means can be realized in various forms as long as it is configured to prevent the attachment of a general incandescent bulb, and is not particularly limited.
Moreover, although a downlight is suitable as a lighting fixture, it is not restricted to this. It can be applied to various lighting fixtures used indoors or outdoors.

1 ... LED lamp, 2 ... Lighting fixture (downlight),
3 ... erroneous mounting prevention means, 11 ... substrate, 12 ... heat conduction member (main body),
15 ... base, 17 ... LED, 23 ... socket

Claims (1)

An LED lamp comprising: a substrate on which the LED is mounted; a heat conducting member that is thermally coupled to the substrate and exposed to the outer surface; and a base that is electrically connected to the LED and provided on one end side;
A socket to which the base of the LED lamp is mounted and a socket of a general incandescent bulb are prevented, and when the LED lamp is mounted to the socket, it has a thermal conductivity that is thermally coupled to the heat conducting member. An instrument body provided with means for preventing erroneous mounting;
The lighting fixture characterized by comprising.

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