JP2012054018A - Light-emitting element lamp and lighting fixture - Google Patents

Abstract

【Task】
Provided are a light-emitting element lamp capable of suppressing a connection pin from being detached from a lamp socket, and a lighting fixture equipped with the light-emitting element lamp.
[Solution]
The light emitting element lamp 2 is disposed on each of the long substrate 8, the light emitting element 9 mounted on the substrate 8, and both ends 8 </ b> C and 8 </ b> D in the longitudinal direction of the substrate 8. The connection pins 10, 10, 11, and 12 attached to the substrate 6 are made of a translucent resin, and the connection pins 10, 1011, and 12 are relatively displaceable and protrude outward. A surrounding body 13 is provided.
[Selection] Figure 4

Description

  The present embodiment relates to a light-emitting element lamp that is structurally compatible with existing fluorescent lamps and a lighting fixture that is equipped with the light-emitting element lamp.

  In recent years, with the increase in output, efficiency, and spread of light-emitting diodes, lighting fixtures that are used indoors or outdoors that use light-emitting diodes as light sources have been developed. Since the light emitting diode can realize power saving and long life compared with a light source such as a conventional fluorescent lamp, the replacement frequency of the light source or the lighting fixture can be reduced, which is advantageous in terms of maintenance. Therefore, in this respect, it is desirable to use a light emitting diode instead of a fluorescent lamp or the like as a light source.

  By the way, what replaces a fluorescent lamp with the existing lighting fixture and attaches the illuminating device which uses a light emitting diode as a light source is proposed (for example, refer patent document 1). This illuminating device includes a base having two pairs of electrode pins attached to a lamp socket, an outer tube connecting the caps, and a light emitting diode housed and held in the outer tube. The outer tube includes a cylindrical portion having an elongated cylindrical shape and a closing portion that closes both ends of the cylindrical portion, and the cylindrical portion is formed of a translucent resin.

JP 2009-43447 A (page 6, FIG. 2)

  Since conventional fluorescent lamps are usually made of glass, thermal expansion and contraction due to temperature are relatively small. On the other hand, since the outer tube that connects the caps is made of resin, the degree of thermal expansion and contraction is large as the light emitting diode is turned on and off, and this is repeated. Thereby, the total length between the caps may change, and in the structure in which the pair of electrode pins are inserted into the lamp socket, the lighting device may be detached from the lamp socket and fall.

The light emitting element lamp of the present embodiment is configured to include a substrate, a light emitting element, a connection pin, and an enclosure.
The substrate is formed in an elongated shape.

  The light emitting element is a solid light emitting element such as a light emitting diode (LED) element or an organic electroluminescence (EL) element, and is mounted on a substrate.

  The connection pins are respectively disposed on both end sides in the longitudinal direction of the substrate. The connection pin is attached to the socket of the lighting fixture.

  The enclosure is made of a translucent resin, and the connection pins are relatively displaceable, and covers the substrate so as to protrude outward.

  According to the present embodiment, since the substrate has a very small ratio of thermal expansion and thermal contraction caused by turning on and off the light emitting elements, the total length between the connection pins respectively disposed on both ends in the longitudinal direction of the substrate is The change according to lighting and extinguishing of the light emitting element is small. Therefore, even if the light emitting element lamp is repeatedly turned on and off over time, the light emitting element lamp is suppressed from being removed from the lighting fixture because the connection pin is suppressed from being removed from the socket. I can expect.

It is a schematic perspective view of the lighting fixture which shows Example 1 of this invention. Similarly, it is a schematic side view of a light emitting element lamp. Similarly, it is a schematic sectional side view of a light emitting element lamp. Similarly, it is a schematic front sectional view of a light emitting element lamp. It is a schematic front view of the lighting fixture which shows Example 2 of this invention. Similarly, it is a schematic sectional side view of a light emitting element lamp. Similarly, it is a schematic front sectional view of a light emitting element lamp.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The lighting fixture 1 which shows Example 1 of this invention is comprised as shown in FIG. 1, and the light emitting element lamp 2 is comprised as shown in FIG. 2 thru | or FIG. In addition, in each figure, the same code | symbol is attached | subjected to the same part and the overlapping description is abbreviate | omitted.

  In FIG. 1, a lighting fixture 1 is installed on a ceiling surface, and includes a light emitting element lamp 2, a fixture body 3, and a lighting device 4. The instrument body 3 is formed of a cold rolled steel plate or the like, and has an existing configuration in which a conventional fluorescent lamp is mounted except for the socket 6. The appliance body 3 has sockets 5 and 6 to which the light emitting element lamp 2 is attached and detached at both longitudinal ends 3a and 3b thereof. One socket 5 is a known structure into which a connecting pin of a conventional fluorescent lamp is inserted. The other socket 6 is attached to the fixture body 3 in place of the conventional socket 5 attached to the fixture body 3 so that the connection pin of the light emitting element lamp 2 can be inserted, and a conventional fluorescent lamp is used. The connection pin is formed so that it cannot be inserted.

  As will be described later, the connection pin of the light emitting element lamp 2 to be inserted into the socket 6 is composed of two relatively large and small connection pins. And a small power receiving terminal into which the small diameter connecting pin is inserted.

  The instrument body 3 includes a base (not shown) that is attached to the ceiling surface with screws or the like, and a reflector 7 that is fixed to the base with screws (not shown) via an attachment member (not shown). The base is formed in a long and substantially rectangular shape, and the reflector 7 is formed in a box shape that is long and has a substantially pentagonal cross section perpendicular to the longitudinal direction. The socket 6 is attached to an attachment member instead of the socket 5 after the reflector 7 is removed from the base.

  And the lighting device 4 is attached to the base. Similarly to the socket 6, the lighting device 4 is attached in place of the fluorescent lamp lighting device after the reflector 7 is removed from the base. The lighting device 4 is connected to a commercial AC power source and sockets 5 and 6. Here, for example, a ground wire (not shown) is connected to one socket 5, and an output line (not shown) of the lighting device 4 is connected to the other socket 6. Further, the positive output line of the lighting device 4 is connected to the large power receiving terminal of the socket 6, and the negative output line of the lighting device 4 is connected to the small power receiving terminal of the socket 6. After the lighting device 4 is attached, the reflector 7 is attached to the base. Thus, the lighting device 4 is disposed in the fixture body 3. The lighting device 4 is formed by a known configuration that supplies a predetermined current to the light emitting element lamp 2 to light the light emitting element lamp 2.

  In FIG. 4, the light-emitting element lamp 2 includes a long substrate 8, a light-emitting diode 9 as a light-emitting element, connection pins 10 and 10, connection pins 11 and 12, and an enclosure 13.

  The substrate 8 is made of a flat plate made of a metal material having good thermal conductivity and excellent heat dissipation, for example, aluminum (Ai), and is formed in a long and substantially rectangular shape. An insulating layer (not shown) is formed on one surface 8a, and a plurality of light emitting diodes 9 are mounted on the insulating layer. The light emitting diodes 9 are linearly mounted at a constant interval in the longitudinal direction at the center in the width direction of the substrate 8. A wiring pattern (not shown) made of copper foil is formed on the insulating layer. The light emitting diodes 9 are connected in series by the wiring pattern. A resist layer is appropriately provided on the insulating layer.

  The substrate 8 may be formed using a ceramic material or a synthetic resin material which is an insulating material. In this case, it is preferable that the substrate 8 is closely attached to a heat radiating plate formed of a material having good thermal conductivity such as aluminum (Al) and having excellent heat dissipation. Further, the substrate 8 is more preferable as the linear expansion coefficient is smaller.

  The light emitting diode 9 is formed in a surface mount type LED package. Schematically, it is comprised from the LED chip arrange | positioned by the main-body part formed with ceramics, and translucent resin for molds, such as an epoxy resin and silicone resin which seal this LED chip. The LED chip is a blue LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to be able to emit white light, a yellow phosphor that emits yellow light that is complementary to blue light is used. Yes.

  The light emitting diode 9 may be mounted directly on the substrate 8 with an LED chip, or may be mounted with a bullet-type light emitting diode. The mounting method and type are not particularly limited. Absent.

  The connection pins 10 and 10 are made of, for example, brass, are formed in a substantially cylindrical shape, and are provided on a base body 16 formed in a rectangular parallelepiped shape. The base body 16 is made of an insulating thermosetting resin such as a phenol resin, and penetrates the connection pins 10 and 10. That is, one end side 10 a of the connection pin 10 protrudes from the base body 16 by a predetermined length, and the other end side 10 b protrudes somewhat from the base body 16.

  Similarly to the connection pins 10 and 10, the connection pins 11 and 12 are made of, for example, brass, are formed in a substantially cylindrical shape, and are provided on a base body 17 formed in a rectangular parallelepiped shape. The base body 17 is formed in the same outer shape using the same resin material as the base body 16, and penetrates the connection pins 11 and 12. That is, the connection pins 11 and 12 have one end sides 11 a and 12 a protruding from the base body 17 by a predetermined length, and the other end sides 11 b and 12 b slightly protruding from the base body 17.

  One of the connection pins 11 and 12 is formed to be equivalent to the connection pins 10 and 10. The other connecting pin 12 has the same overall length as the connecting pin 11, but has an outer diameter smaller than that of the connecting pin 11 as shown in FIG. 2. The outer diameter of the connection pin 11 is 2 mm, for example, and the outer diameter of the connection pin 12 is 1 mm, for example.

  In FIG. 4, the base body 16 is located on the one surface 8 a side of the substrate 8 and on one end portion side 8 </ b> C in the longitudinal direction of the substrate 8, and one end sides 10 a, 10 a of the connection pins 10, 10 The base body 17 is disposed on the one surface 8a side of the substrate 8 and on the other end portion 8D in the longitudinal direction of the substrate 8, and one end sides 11a and 12a of the connection pins 11 and 12 are disposed on the substrate 8 side. It is arrange | positioned so that it may face outward of the longitudinal direction.

  The base bodies 16 and 17 are fixed to the one surface 8a side of the substrate 8 with, for example, an adhesive. The connection pins 10 and 10 of the base body 16 are electrically connected to the substrate 8 by jumper wires 18. The connection pins 11 and 12 of the base body 17 are electrically connected to a wiring pattern formed on the substrate 8 by jumper wires 19. That is, the connection pins 11 and 12 of the base body 17 are connected between both ends of the light emitting diodes 9 mounted on the substrate 8 and connected in series.

  The connection pins 10 and 10 are inserted into the socket 5 of the lighting apparatus 1 shown in FIG. 1, and the connection pins 11 and 12 are inserted into the socket 6. At this time, the connection pins 10 and 10 are connected to the ground wire, and the connection pins 11 and 12 are connected to the output line of the lighting device 4. That is, the metal substrate 8 is grounded, and the light emitting diode 9 can be lit by the lighting device 4.

  The enclosure 13 is made of a light-transmitting synthetic resin such as acrylic resin, and has a long shape and a substantially cylindrical appearance. The enclosure 13 is divided into two parts, an attachment body 20 to which the substrate 8 is attached and a cover body 21 that covers the substrate 8. The attachment body 20 and the cover body 21 are each formed in a long shape and a substantially semi-cylindrical shape (a bowl shape) by a mold material.

  As shown in FIG. 2, the attachment body 20 has notches 22 and 22 into which the base bodies 16 and 17 are fitted, respectively, on the end faces 20c and 20c on both end sides 20A and 20B in the longitudinal direction. The notches 22 and 22 are formed in a rectangle having the size of the outer shape of the cap bodies 16 and 17.

  Then, as shown in FIG. 4, the one end side 10 a, 10 a of the connection pin 10, 10 is protruded outward from the end surface 20 c of the mounting body 20 in the notch 22 on the one end side 20 </ b> A of the mounting body 20. The base body 16 is fitted. Further, the base body 17 is fitted into the notch 22 on the other end side 20B of the mounting body 20 so that the one end sides 11a and 12a of the connection pins 11 and 12 protrude outward from the end surface 20c of the mounting body 20. It is. That is, the base body 16 and the base body 17 are supported so as to be slidable (slidable) at the cutout portions 22 and 22, respectively.

  The base bodies 16 and 17 may be fixed to the other surface 8 b side of the substrate 8.

  A cover body 21 is attached to the attachment body 20 so as to cover the substrate 8. As shown in FIG. 3, the cover body 21 is provided on the inner surface 21 b side thereof so that locking pieces 25 having locking claws 25 a on the tip side face each other in the width direction of the cover body 21. . An engagement recess 26 is formed on the inner surface 20 b of the attachment body 20 so that the locking claw 25 a engages and locks corresponding to the locking piece 25. The size and forming position of the locking piece 25 and the engaging recess 26 are set so that the mounting body 20 and the cover body 21 are in close contact with each other.

  Further, as shown in FIG. 4, the locking piece 25 and the engaging recess 26 are formed at least at two places in the longitudinal direction of the enclosure 3. The locking claws 25a of the locking pieces 25 are formed into the engaging recesses 26 so that the longitudinal end faces 20c, 20c of the mounting body 20 and the longitudinal end faces 21c, 21c of the cover body 21 are the same surface. By being locked, the attachment body 20 and the cover body 21 are integrated.

  When the attachment body 20 and the cover body 21 are brought into close contact with each other, the base body 16 and the base body 17 are sandwiched between the attachment body 20 and the cover body 21 at the cutout portions 22 and 22 of the attachment body 20, respectively. Accordingly, the substrate 8 is disposed along the longitudinal direction of the enclosure 13 so that the light emitting diode 9 faces the cover body 21. Further, the connection pins 10 and 10 and the connection pins 11 and 12 protrude outwardly from the end surfaces 20c and 20c of the mounting body 20 and the end surfaces 21c and 21c of the cover body 21 substantially equally.

  Next, the operation of the first embodiment of the present invention will be described.

  The light emitting element lamp 2 has its connection pins 10, 10 inserted into the socket 5 of the luminaire 1, and its connection pins 11, 12 inserted into the socket 6, and attached to the pair of sockets 5, 6. Here, since the socket 6 has a large power receiving terminal and a small power receiving terminal, the connection pins 10 and 10 having a relatively large diameter cannot be inserted into the socket 6. Further, of the connection pins 11 and 12, the connection pin 11 is formed in the same manner as the connection pins 10 and 10 and has a relatively large diameter, and therefore cannot be inserted into the small power receiving terminal of the socket 6. Thus, the light emitting element lamp 2 cannot be erroneously attached to the pair of sockets 5 and 6.

  The connection pins 11 and 12 are connected to the lighting device 4 via the output line of the lighting device 4. As a result, current (electric power) can be supplied from the lighting device 4 to the light emitting diode 9. The connection pins 10, 10 are connected to a ground wire, and the substrate 8 made of aluminum (Al) is grounded.

  When commercial AC power is turned on to the lighting device 4, a predetermined current is supplied from the lighting device 4 to the light emitting diode 9. The light emitting diode 9 is lit and emits white light. The white light passes through the cover body 21 of the enclosure 3 and is emitted to the external space.

  The light emitting diode 9 generates heat as it is turned on. This heat is transferred to the substrate 8 made of aluminum (Al), and the radiant heat from the substrate 8 is transferred to the attachment body 20 and the cover body 21 of the enclosure 3 made of acrylic resin. Further, the radiant heat of the light emitting diode 9 is transferred to the cover body 21 of the enclosure 3. The heat transferred to the attachment body 20 and the cover body 21 is released from the outer surfaces 20a and 21a to the external space.

Then, the substrate 8 and the enclosure 3 are thermally expanded by the heat transferred. Here, since the linear expansion coefficient of aluminum (Al) is 23 × 10 ⁻⁶ / ° C. and the linear expansion coefficient of acrylic resin is 70 × 10 ⁻⁶ / ° C., the thermal expansion of the substrate 8 is surrounded. It is relatively smaller than the thermal expansion of the body 3.

  Since the connection pins 10 and 10 are fixed to the substrate 8 by the base body 16 and the connection pins 11 and 12 are respectively fixed by the base body 17, the connection pins 10 and 10 and the connection pins 11 and 12 are light emitting diodes. Even if the thermal expansion and thermal contraction of the substrate 8 accompanying the turning on and off of 9 are repeated, the substrate 8 is displaced while sliding (sliding) relatively. The substrate 8 has relatively small thermal expansion and thermal contraction. Accordingly, the total length between the connection pins 10 and 10 and the connection pins 11 and 12 via the substrate 8 is less changed, and there is no damage to the connection pins 10 and 10 and the connection pins 11 and 12 and no dropout from the sockets 5 and 6. The fall of the light emitting element lamp 2 is suppressed.

  As described above, since the substrate 8 has a very small ratio of thermal expansion and thermal contraction due to turning on and off of the light emitting diode 9, the connection pins respectively disposed on both end portions 8C and 8D in the longitudinal direction of the substrate 8 The total length between the pins 10 and 10 and the connection pins 11 and 12 is small in accordance with the light-emitting diode 9 being turned on and off. Therefore, even if the light emitting diode 9 is repeatedly turned on and off over time, the light emitting element lamp 2 is displaced while the connection pins 10 and 10 and the connection pins 11 and 12 slide relative to each other. Since it is prevented from being detached from the sockets 5 and 6, it has an effect that the falling from the lighting fixture 1 is suppressed.

  Further, since the connection pins 10 and 10 and the connection pins 11 and 12 are directly attached to the substrate 8, the attachment of the connection pins 10 and 10 and the connection pins 11 and 12 and the electrical wiring are simplified, and the manufacturing cost can be suppressed. It has the effect.

  In addition, although the light emitting diode 9 used the light emitting element lamp 2 as a light emitting element, you may comprise using solid light emitting elements, such as an organic electroluminescent (EL) element.

  The lighting fixture 27 showing Example 2 of the present invention is configured as shown in FIG. 5, and the light emitting element lamp 28 is configured as shown in FIGS. 6 and 7. The same parts as those in FIGS. 1 to 4 and the parts corresponding to the same parts are denoted by the same reference numerals, and the description thereof is omitted.

  A lighting fixture 27 shown in FIG. 5 is formed in a box shape and has a fixture main body 30 having sockets 28 and 29, a light emitting element lamp 31 mounted on the sockets 28 and 29, and a lighting device 4 shown in FIG. Configured.

  The appliance main body 30 is provided with sockets 28 and 29 on the inner side of the front surface 30a and on both end sides 30C and 30D in the longitudinal direction. The socket 28 is formed so that it can be attached by inserting the connection pins 10, 10, and the socket 29 is formed so that it can be attached by inserting the connection pins 11, 12.

  The light emitting element lamp 31 is arranged so that the connection pins 10 and 10 and the connection pins 11 and 12 protrude outward from the top portion 13e of the enclosure 13. The light emitting element lamp 31 is supported by two pairs of support fittings 32 and 32 in which both end sides 21 </ b> A and 31 </ b> B in the longitudinal direction are fixed to the instrument body 30. The pair of support fittings 32 supports the light emitting element lamp 31 so as to firmly sandwich the enclosure 13.

  The lighting device 4 is for lighting the light emitting element lamp 31 and is disposed inside the instrument body 30.

  In FIG. 6, a light emitting element lamp 31 is provided with bases 33 and 34 instead of the bases 16 and 17 in the light emitting element lamp 2 shown in FIG. 4. The base body 33 is formed in a substantially rectangular parallelepiped shape having a flange portion 33 a and is attached through the connection pins 10 and 10. Further, the base body 34 is formed in a substantially rectangular parallelepiped shape having a flange portion 34a, and the connection pins 11 and 12 are attached thereto.

  The substrate 8 is supported at its four corners by a pair of mounting rails 35, 35 provided on the mounting body 20.

  The base bodies 33 and 34 are disposed on the other surface 8b side of the substrate 8 and on both ends 8C and 8D in the longitudinal direction of the substrate 8, respectively. The base bodies 33 and 34 are firmly fixed to the substrate 8 with their flanges 33a and 34a by an adhesive (not shown). Although not shown, the connection pins 10 and 10 of the base 33 are electrically connected to the substrate 8, and the connection pins 11 and 12 of the base 34 are electrically connected to the wiring pattern of the substrate 8, although not shown. .

  Then, on the top 20e side of the mounting body 20 of the enclosure 13, openings 36 and 36 are formed corresponding to the base bodies 33 and 34 and through which the base bodies 33 and 34 are inserted. As shown in FIG. 7, the connecting pins 10, 10 protrude outward from the mounting body 20 at one end side 20 </ b> A in the longitudinal direction of the mounting body 20. The connection pins 11 and 12 protrude outward from the attachment body 20 on the other end side 20 </ b> B in the longitudinal direction of the attachment body 20.

  The light emitting element lamp 31 is attached to the sockets 28 and 29 when the connection pins 10 and 10 and the connection pins 11 and 12 are inserted into the sockets 28 and 29 of the instrument body 30. Then, as shown in FIG. 5, the enclosure 13 is attached to the instrument body 30 by sandwiching the enclosure 13 between two pairs of support fittings 32, 32.

  In the light emitting element lamp 31, the connection pins 10 and 10 are fixed to the substrate 8 by the base body 33 and the connection pins 11 and 12 are fixed to the substrate 8 by the base body 34. Therefore, the connection pins 10 and 10 and the connection pins 11 and 12 are Even if the thermal expansion and thermal contraction of the substrate 8 accompanying the lighting and extinguishing of the light emitting diode 9 are repeated, they are displaced while sliding (sliding) relatively. Further, the ratio of thermal expansion and thermal contraction of the substrate 8 is relatively small. Therefore, the change in the total length between the connection pins 10 and 10 and the connection pins 11 and 12 through the substrate 8 is small even if the thermal expansion and thermal contraction of the substrate 8 are repeated. Accordingly, even if the light emitting diode 9 is repeatedly turned on and off over time, the light emitting element lamp 31 is damaged in the connection pins 10 and 10 and the connection pins 11 and 12 and in the sockets 28 and 29. It has the effect that it can suppress.

  DESCRIPTION OF SYMBOLS 1,27 ... Lighting fixture, 2,31 ... Light emitting element lamp, 3,30 ... Appliance main body, 4 ... Lighting apparatus, 8 ... Board | substrate, 9 ... Light emitting diode as a light emitting element 10,10 ... Connection pin, 11,12 ... Connecting pins, 13 ... Enclosure

Claims (2)

A long substrate;
A light emitting device mounted on the substrate;
Connecting pins respectively disposed on both ends in the longitudinal direction of the substrate and attached to a socket of a lighting fixture;
An enclosure made of a translucent resin, the connection pins being relatively displaceable, and covering the substrate so as to protrude outward;
A light-emitting element lamp comprising: An instrument body having a socket;
The light emitting element lamp according to claim 1, wherein the connection pin is attached to the socket.
A lighting device disposed in the fixture body for lighting the light emitting element lamp;
The lighting fixture characterized by comprising.

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