JP2006032023A - Light emitting device and lighting device - Google Patents

Abstract

Provided is a light emitting device (11) for securing a tension of an electric wire (16) with a simple configuration.
A claw portion 41 of a mounting portion 38 projecting from a light control portion 31 of a light control body 15 is locked to a case 14 so that a contact portion 36 of the light control body 15 contacts one surface of a substrate 13. The other surface of the substrate 13 is pressed against the case 14 in contact. The light control body 15 combined with the substrate 13 is provided with a tension stopper 44 that holds the electric wire 16 connected to the substrate 13 and drawn out from the substrate 13. The tension stopper 44 is constituted by a groove 45 opened at the tip of the attachment portion 38, and the electric wire 16 is sandwiched and held in the groove 45. The wire 16 is tensioned with a simple configuration in which the groove 45 is provided in the light control body 15.
[Selection] Figure 1

Description

  The present invention relates to a light emitting device having a light emitting element and a light control body mounted on a substrate, and an illumination device using the light emitting device.

  Conventionally, in a light emitting device using a light emitting diode as a light source as a light emitting element, for example, a light emitting diode is mounted on one surface of a substrate, and a light control body for controlling light from the light emitting diode is provided on one surface of the substrate. A configuration is known in which the substrates and the light control body are mounted in a case in combination.

  A power supply wire to the light emitting diode is connected to the substrate and is drawn out from the substrate. However, if excessive tension is applied to the wire when handling the light-emitting device, such as when assembling to an electrical device that uses the light-emitting device, the connection between the wire and the substrate will be damaged, resulting in poor connection. .

  In a general lighting fixture, a tension stopper member is attached to the middle of the electric wire connected to the lighting device and pulled out, and the tension stopper member is engaged with the cover that houses the lighting device, and the electric wire is inserted into the electric wire. There is an example in which such a tension is received by a cover via a tension stopper member so that no tension is applied to a connection portion between the electric wire and the lighting device (for example, see Patent Document 1).

In a light emitting device using a light emitting diode as a light source, the structure of a tension stopper as in a general lighting fixture cannot be used as it is. For example, a saddle that engages an electric wire and a screw that fixes the saddle to a case are used. Using fastening parts, an electric wire drawn from the board is attached to the case to stop the tension.
Japanese Patent Laid-Open No. 7-296627 (page 3, FIG. 1-2)

  However, it is necessary to use special parts such as fastening parts to stop the tension of the electric wires, and there are problems such as a complicated structure and a large size for securing a place for attaching the parts.

  In addition, when the electric wire is tensioned to the case, when a force is applied to the light control body in a direction deviating from the board, the substrate is displaced with respect to the case or the light control body, and the light emitting diode and the light control body There is a problem that the optical characteristics change due to the displacement.

  The present invention has been made in view of such points, and it is not necessary to use a special part such as a fastening part for stopping the tension of the electric wire, the configuration can be simplified, and the positional relationship between the substrate and the light control body. It is an object of the present invention to provide a light-emitting device that can maintain constant light and a lighting device using the light-emitting device.

  The light-emitting device according to claim 1 has a substrate on which the light-emitting element is mounted; an electric wire connected to the substrate and drawn from the substrate; and a light-control part that controls light from the mounting part and the light-emitting element; A part of the mounting portion includes a light control member that also serves as a tension stopper for holding the electric wire drawn from the substrate; and a case in which the substrate and the light control member are disposed. The case may have any shape or configuration as long as the substrate and the light control body can be disposed.

  The light-emitting device according to claim 2 is the light-emitting device according to claim 1, wherein the light control body projects a light control portion that controls light from the light emitting element, and projects from the light control portion toward the case. A mounting portion provided with a claw portion that is locked to the case, and a contact portion that contacts the one surface of the substrate while the mounting portion is locked to the case and presses the other surface of the substrate against the case. Has a locking portion for locking the mounting portion, and the tension stop portion of the light control body has a groove shape opening toward the tip of the mounting portion, and the mounting portion is locked to the locking portion. An electric wire is pinched | interposed between a groove part and a latching | locking part, and an electric wire is hold | maintained.

  The light-emitting device according to claim 3 is the light-emitting device according to claim 2, wherein the substrate, the case, and the light control body are provided in a longitudinal shape, and a plurality of light-emitting elements are mounted on the substrate along the longitudinal direction. The body is provided with a plurality of light control portions along the longitudinal direction and mounting portions are provided on both sides intersecting the longitudinal direction, and the electric wires are connected between adjacent light emitting elements on the substrate and the substrate It is pulled out through the groove portion in a direction intersecting with the longitudinal direction of.

  The light-emitting device according to claim 4 is the light-emitting device according to claim 2 or 3, wherein the inner surface of the groove portion is tapered so that the opening size of the inner edge on the substrate side is smaller than the opening size of the inner edge on the side opposite to the substrate. Is provided.

  A lighting device according to a fifth aspect includes the light emitting device according to any one of the first to fourth aspects; a lighting device to which the light emitting device is connected through an electric wire and lights a light emitting element of the light emitting device. .

  According to the light emitting device of claim 1, a part of the mounting portion of the light control body combined with the substrate also serves as a tension stop portion for holding the electric wire drawn out from the substrate, so that the fastening component is used to hold the electric wire in tension. It is not necessary to use special parts such as, and the configuration can be simplified, and even if the wire is tensioned, it is received by the tension stop part of the mounting part of the light control body, and the tension applied to the wire is controlled by the light control body. It is possible to prevent the light portion side from being affected, and to keep the positional relationship between the light control portion of the light control body and the light emitting element constant.

  According to the light emitting device of the second aspect, in addition to the effect of the light emitting device of the first aspect, the claw portion at the tip of the mounting portion protruding from the light control portion of the light control body toward the case is used as the case. By locking, the abutting part of the light control body can be brought into contact with one surface of the substrate and the other surface of the substrate can be pressed against the case for assembly. Since it is configured with a groove portion that opens toward the front, the wire is sandwiched between the inner edge on both sides of the groove portion and the locking portion of the case and securely held by locking the mounting portion to the locking portion of the case. it can.

  According to the light emitting device of claim 3, in addition to the effect of the light emitting device of claim 2, the substrate, the case and the light control body are provided in a longitudinal shape, and the substrate has a plurality of light emitting elements along the longitudinal direction. In the case of a line light source that is mounted and provided with a plurality of light control parts along the longitudinal direction and a mounting part provided on both sides intersecting the longitudinal direction, the light control elements are arranged between adjacent light emitting elements in the longitudinal direction on the substrate. By pulling out the electric wire connected to the wire through the groove portion in a direction intersecting the longitudinal direction of the substrate, the wire portion can be easily inserted into the groove portion of the mounting portion of the light control body, and the assemblability can be improved.

  According to the light emitting device of claim 4, in addition to the effect of the light emitting device of claim 2 or 3, the inner surface of the groove portion has an opening size of the inner edge on the substrate side than the opening size of the inner edge on the opposite side of the substrate. By providing the tapered shape so as to be small, the inner edge on the substrate side is caught by the electric wire, and the tension applied to the electric wire can be reliably received by the light control body.

  According to the illuminating device of the fifth aspect, since the positional relationship between the light emitting element and the light control body is kept constant by including the light emitting device according to any one of the first to fourth aspects, Optical characteristics can be stabilized.

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

  1 is a sectional view of a light emitting device, FIG. 2 is a sectional view of the light emitting device, FIG. 3 is a side view of the light emitting device, FIG. 4 is a plan view of the light emitting device, and FIG. 6 is a bottom view of the mounting portion of the light control body of the light emitting device.

  1 to 4, reference numeral 11 denotes a light-emitting device, and the light-emitting device 11 is configured as a light-emitting module of a line light source in which a plurality of light-emitting diodes 12 that are solid-state light-emitting elements are arranged in a line at intervals. Has been.

  The light-emitting device 11 includes a substrate 13 on which a plurality of light-emitting diodes 12 are arranged in a line at intervals, a case 14 to which the other surface of the substrate 13 is joined, and each light-emitting diode 12 attached to the case 14. A light control body 15 for controlling the light from the light source 15 and joining the substrate 13 to the case 14; and an electric wire 16 connected to the substrate 13 and serving as a power feeding cable for supplying power to the plurality of light emitting diodes 12.

  The light emitting diode 12 has a chip shape, and has anode and cathode electrodes 12a at both ends in the longitudinal direction and a light emitting portion 12b that emits light at the center between the electrodes 12a at both ends, and end faces of the electrodes 12a at both ends. Is electrically and mechanically connected to the wiring circuit of the substrate 13 by solder. The light emitting diodes 12 mounted on the substrate 13 are arranged so that the longitudinal directions connecting the electrodes 12a at both ends of the anode and the cathode are different by 90 ° between the adjacent light emitting diodes 12, and the light distribution characteristics are made uniform. The light emission color of the light emitting diode 12 is white for illumination, but other single color such as blue or a plurality of colors can also be used.

  Further, the substrate 13 is formed in a rectangular plate-like longitudinal shape using, for example, glass epoxy resin, and one surface of the substrate 13 is a mounting surface on which a plurality of light emitting diodes 12 are arranged along the longitudinal direction. A wiring circuit to which each light emitting diode 12 is connected is formed on the surface.

  The electric wires 16 connected to the substrate 13 have two wires for a pair of positive electrode and negative electrode, and a covered electric wire in which a conductive core wire 16a is covered with an insulating covering 16b is used. The two electric wires 16 are electrically and mechanically connected by soldering to the electric wire connection terminal portion 13a of the substrate 13 provided between the light emitting diodes 12 adjacent in the longitudinal direction on one end side of the substrate 13. In this case, it is drawn out in one side direction intersecting the longitudinal direction of the substrate 13. An intermediate portion of the electric wire 16 is inserted into the tube 18, and a connector 19 is connected to the tip of the electric wire 16.

  The case 14 is made of a metal such as aluminum or resin having good thermal conductivity, and is formed in a longitudinal shape substantially the same as the dimension in the longitudinal direction of the substrate 13, and has a rectangular plate-like case base 21. A bonding surface 22 is formed on one surface of the case base 21 so that the entire area of the other surface opposite to the mounting surface of the substrate 13 is in contact with the light control body 15 on both sides intersecting the longitudinal direction of the bonding surface 22. Locking portions 23 on both sides to be stopped are formed so as to protrude over the entire area in the longitudinal direction. The locking portions 23 on both sides have a raised portion 24 that protrudes from the case base portion 21 and a locking claw 25 that protrudes inward from the tip of the raised portion 24, and is connected to the locking claw 25 and the joint surface. A space portion 26 is formed between the space 22 and the space 22. On one side of the case base 21, a mounting edge 27 is provided so as to protrude to the fixture body of the lighting device or the installation location, and a notch 28 that prevents interference with the electric wire 16 at one end of the mounting edge 27. Is formed.

  The light control body 15 is made of a transparent resin having a light guide property and is formed in a longitudinal shape, and a plurality of light control portions (lens portions) formed in a line corresponding to the arrangement of the light emitting diodes 12. 31.

  Each light control part 31 is formed with an accommodation space 32 having a square cross section for accommodating the light emitting diode 12 on the back side facing the substrate 13, and light emitted from the light emitting diode 12 is incident on the inner surface facing the accommodation space 32. The four incident surfaces 33 are formed, and the four reflecting surfaces 34 are formed on the peripheral surface of the light control portion 31 so as to expand toward the surface side and totally reflect the light incident from the incident surface 33 toward the surface side. On the surface side, a substantially square emitting surface 35 is formed for emitting the direct light incident from the incident surface 33 and the reflected light reflected by the reflecting surface 34 to the surface side.

  On the back surface side of each light control portion 31 facing the substrate 13, contact portions 36 that contact the mounting surface of the substrate 13 are formed so as to protrude from the opposite side edges of the accommodation space portion 32. Cutouts 37 are formed on the other opposite side edges that intersect with the abutting part 36 to communicate the accommodating space 32 and the outside. The contact portion 36 is formed in two directions intersecting the direction of the electrodes 12a at both ends of the light emitting diode 12, and the notch portion 37 is formed in two directions corresponding to the directions of the electrodes 12a at both ends of the light emitting diode 12. The direction of the contact part 36 and the notch part 37 of each light control part 31 is different by 90 degrees between the light control parts 31 adjacent in the longitudinal direction corresponding to the direction of the light emitting diodes 12 arranged on the substrate 13. Is formed.

  Each light control portion 31 is integrally formed in one row so that the emission surface 35 side is continuous, and both side mounting portions 38 protruding toward the case 14 are integrally formed on both sides intersecting the longitudinal direction. Yes. The attachment portions 38 on both sides are formed with inclined portions 39 that protrude in an inclined manner with respect to the direction from the light control portion 31 to the case 14. A mounting piece 40 that can be disposed between the stoppers 23 is formed, and a claw portion 41 that is detachably locked to the locking claw 25 of the case 14 is formed on the outer surface side of the tip of the mounting piece 40.

  As shown in FIG. 1 to FIG. 6, the electric wires 16 drawn in one direction from the substrate 13 are individually held in the attachment portion 38 on one side at one end of the light control body 15. The tension stoppers 44 are formed as tension stoppers for receiving the tension applied to the bolts. Each of these tension stoppers 44 is configured by a groove portion 45 as a groove portion that is formed in a groove shape from the proximal end of the attachment portion 38 to the distal end thereof and opens at the distal end of the attachment portion 38, and the electric wire 16 is connected to the groove portion 45. It is inserted from the radial direction intersecting the direction.

Both side edges of the opening of the tip of the groove 45 are widened to facilitate the insertion of the electric wire 16, and the distance between the inner edges on both sides inside the groove 45 is smaller than the diameter of the electric wire 16 and both inner edges of the groove 45. It is possible to hold the electric wire 16 between them. Further, with the light control body 15 attached to the case 14, the electric wire 16 can be sandwiched and held between the back side of the groove 45 and the locking portion 23 of the case 14, that is, the back side of the groove 45 and the case 14 The distance between the first and second locking portions 23 is smaller than the diameter of the electric wire 16.

  As shown in FIGS. 1 and 6, the inner surface of the inner side of the groove portion 45 on both sides and the inner side is smaller in the opening size of the inner edge on the substrate 13 side, that is, the inner surface side, than the opening size of the inner edge on the opposite side, that is, outer surface side. Thus, it is formed in a tapered shape.

  In order to assemble the light-emitting device 11, first, the light-emitting diodes 12 on the board 13 and the light-control parts of the light-control body are combined, and the electric wires 16 drawn from the board 13 are connected to the light-control body 15 by tension. The substrate 13 and the light control body 15 are combined with each other by being inserted into the respective groove portions 45 as the portions 44 from the radial direction of the electric wires 16.

  In a state where the substrate 13 and the light control body 15 are combined, the substrate 13 and the light control body 15 are inserted from the end of the case 14. At this time, the attachment portions 38 on both sides of the light control body 15 are inserted between the engagement portions 23 on both sides of the case 14, and the claw portions 41 of the attachment portions 38 on both sides are inserted into the engagement claws 25 of the engagement portions 23 on both sides. Further, the electric wires 16 are arranged on the locking portions 23 of the case 14.

  In the assembled state of the light-emitting device 11, the tip of the mounting portion 38 protruding from both sides of the light control body 15 toward the case 14 is locked to the case 14 by the claw portion 41, so that the light control body 15 comes into contact. The portion 36 can be brought into contact with one mounting surface of the substrate 13 and the other surface of the substrate 13 can be pressed against the bonding surface 22 of the case 14 to be securely bonded. Therefore, the heat generated when the light emitting diode 12 emits light can be reliably transferred from the substrate 13 to the case 14, and can be radiated from the case 14, thereby ensuring heat dissipation. Moreover, since the mounting portions 38 on both sides of the light control body 15 are provided over the entire area of the plurality of light control sections 31 at both side positions intersecting the longitudinal direction, the heat dissipation from the substrate 13 is substantially uniform over the entire length direction. Can be

  The light-emitting device 11 is attached to the lighting device using the light-emitting device 11 via the case 14, and the connector 19 at the tip of the electric wire 16 is connected to the lighting device of the lighting device. The plurality of light emitting diodes 12 can be turned on by being fed.

  Even when the light-emitting device 11 is handled, such as when assembling the light-emitting device 11, such as when the light-emitting device 11 is handled, even if tension is applied to the wire 16, the tension stop 44 of the light control body 15 receives the tension of the wire 16. It is possible to prevent the connection portion between 16 and the substrate 13 from being damaged and causing a connection failure.

  In this way, a part of the mounting portion 38 of the light control body 15 combined with the board 13 also serves as a tension stop part for holding the electric wire 16 drawn out from the board 13, so that a fastening part or the like can be used to stop the tension of the electric wire 16. Thus, the configuration of the light emitting device 11 can be simplified.

  Furthermore, since the light-emitting diode 12 has a strong directivity, the optical characteristics are easily changed when the positional relationship between the light-emitting diode 12 and the light control portion 31 of the light control body 15 is shifted. Even if tension is applied to the light control body 15, it is received by a part of the tension stop portion of the mounting portion 38 of the light control body 15, and the tension applied to the electric wire 16 is prevented from affecting the light control section 31 side of the light control body 15. The positional relationship between the 15 light control portions 31 and the light emitting diodes 12 can be kept constant.

  In particular, as shown in FIG. 1, when the mounting portions 38 on both sides of the light control body 15 are mounted between the locking portions 23 on both sides of the case 14, the outer surface of the mounting piece 40 of the mounting portion 38 is the locking portion. Since the claw portion 41 is engaged with the locking claw 25 in contact with the inner surface of the locking claw 25 of FIG. 23, even if tension is applied to the electric wire 16, the mounting portion 38 is pressed by the locking portion 23, Since the mounting portion 38 can be prevented from being displaced, the influence of the tension applied to the electric wire 16 to the light control portion 31 side of the light control body 15 is prevented, and the light control portion 31 and the light emitting diode 12 of the light control body 15 are Can be kept constant.

By providing the tension stop 44 on the light control body 15 combined with the substrate 13, the substrate 13 moves together if the light control body 15 moves, and the positional relationship between the light emitting diode 12 and the light control body 15 on the substrate 13 is constant. Can be kept in.

  In addition, since the tension stopper 44 of the light control body 15 is configured by the groove 45 opened at the tip of the mounting portion 38, the electric wire 16 can be easily inserted into the groove 45 from the radial direction intersecting the axial direction. As a result, the assemblability can be improved, and the electric wire 16 can be sandwiched between the inner edges on both sides of the groove 45 and securely held.

  Further, the substrate 13, the case 14 and the light control body 15 are provided in a longitudinal shape, a plurality of light emitting diodes 12 are mounted on the substrate 13 along the longitudinal direction, and the light control body 15 is provided with a plurality of light control portions 31 in the longitudinal direction. Even in the line light source provided along the direction and the mounting portions 38 on both sides intersecting the longitudinal direction, the electric wires 16 connected between the light emitting diodes 12 adjacent to each other in the longitudinal direction on the substrate 13 are connected to the longitudinal direction of the substrate 13. By pulling out in the intersecting direction, it can be easily inserted into the groove portion 45 of the mounting portion 38 of the light control body 15, and the assemblability can be improved.

  Further, the inner surface of the groove 45 is tapered so that the opening size of the inner edge on the substrate 13 side is smaller than the opening size of the inner edge on the opposite side of the substrate 13, so that the inner edge on the substrate 13 side is caught by the electric wire 16. The light control body 15 can reliably receive the tension applied to the electric wire 16.

  In addition, there is a displacement difference due to the difference in thermal expansion coefficient between the case 14 and the light control body 15 with respect to temperature changes such as turning on / off of the light emitting diode 12 and ambient temperature, but the mounting portions 38 on both sides of the light control body 15 are Since it is only fixed to the case 14 by the claw portion 41 at the front end and is not fixed, the displacement difference can be sufficiently absorbed by the elastic displacement of the mounting portions 38 on both sides, and the distortion of the substrate 13 and the light control body 15 can be absorbed. Can reduce the effects of That is, when the temperature changes, the substrate 13 can be prevented from being distorted and cracking in the solder that electrically and mechanically connects the light emitting diode 12 to the substrate 13 or peeling of the solder to cause a light emission failure. Therefore, it is possible to prevent the light control body 15 from being distorted and causing light distribution distortion and light leakage.

  Further, since the mounting portion 38 of the light control body 15 is provided with an inclined portion 39 that is inclined with respect to the direction toward the case 14, the distal end side of the mounting portion 38 is directed toward the case 14 due to the elastic displacement of the inclined portion 39. It is easy to move in an oblique direction with respect to the direction, and this oblique movement is caused by a component in the direction toward the case 14, that is, a direction perpendicular to the bonding surface 22, and a direction that intersects the direction toward the case 14, that is, the bonding. Since it includes a component in the direction parallel to the surface 22 and in the opposing direction of the locking portions 23 on both sides, it can sufficiently cope with the displacement difference in either direction.

  Further, since the mounting portions 38 on both sides of the light control body 15 are provided over the entire area of the plurality of light control portions 31 at both side positions intersecting the longitudinal direction, both side surfaces intersecting the longitudinal direction by the mounting portions 38 on both sides It is possible to prevent dust from entering from the inside.

It is sectional drawing of the light-emitting device which shows one embodiment of this invention. It is sectional drawing of a light-emitting device same as the above. It is a side view of a light emitting device same as the above. It is a top view of a light emitting device same as the above. It is a side view of the light control body of a light-emitting device same as the above. It is a bottom view of the attachment part of the light control body of a light-emitting device same as the above.

Explanation of symbols

11 Light emitting device
12 Light-emitting diodes as light-emitting elements
13 Board
14 cases
15 Light control body
16 wire
23 Locking part
31 Light control part
36 Contact part
38 Mounting part
41 Claw
44 Tension stop as tension stop
45 Groove as groove

Claims (5)

A substrate on which a light emitting element is mounted;
An electric wire connected to the substrate and drawn from the substrate;
A light-controlling body having a light-controlling part that controls light from the mounting part and the light-emitting element, wherein a part of the mounting part also serves as a tension stopper that holds the electric wire drawn from the substrate;
A case in which a substrate and a light control body are disposed;
A light-emitting device comprising: The light control body includes a light control portion that controls light from the light emitting element, a mounting portion that protrudes from the light control portion toward the case and has a claw portion that is locked to the case at the tip, and a mounting portion Has an abutting portion that abuts against one surface of the substrate while being locked to the case and presses the other surface of the substrate against the case,
The case has a locking portion for locking the mounting portion,
The tension stop portion of the light control body has a groove shape that opens toward the tip of the mounting portion. The mounting portion is locked to the locking portion, and the electric wire is sandwiched between the groove portion and the locking portion. The light emitting device according to claim 1, wherein the light emitting device is held. The substrate, the case, and the light control body are provided in a longitudinal shape, a plurality of light emitting elements are mounted on the substrate along the longitudinal direction, and the light control body is provided with a plurality of light control portions along the longitudinal direction. And mounting parts are provided on both sides intersecting the longitudinal direction,
3. The light emitting device according to claim 2, wherein the electric wire is connected between adjacent light emitting elements on the substrate and is drawn out through a groove portion in a direction crossing the longitudinal direction of the substrate.   4. The light emitting device according to claim 2, wherein the inner surface of the groove portion is tapered so that the opening size of the inner edge on the substrate side is smaller than the opening size of the inner edge opposite to the substrate. A light emitting device according to any one of claims 1 to 4;
A lighting device in which the light emitting device is connected through an electric wire and lights up the light emitting element of the light emitting device;
An illumination device comprising:

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