JP5240145B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device using a light emitting element such as a light emitting diode.

  In this type of lighting fixture in the past, a plurality of substrates provided with a large number of white light emitting diodes are used, the angle of each substrate is changed to form a polygonal surface, and light travels from the polygonal surface to each direction. What was comprised so that it might inject | emitted is known (refer patent document 1).

  However, in the above-described lighting fixture, a casing-type translucent cover that covers the opening of the base is provided for the flat base on which the lighting circuit and the substrate are mounted. When mounting on the above-mentioned board or the like, there are many problems such as screwing, which increases the number of work steps. In addition, in the connection between the base and the translucent cover, a structure that can be combined with one touch is not adopted, and the structure is troublesome to remove not only in assembly but also in maintenance and inspection.

  Furthermore, although it is known that a light emitting diode discharges a lot of heat by light emission, there is a problem that a heat radiation measure suitable for a configuration using many light emitting diodes is insufficient.

JP 2004-200102 A

  The present invention has been made as a solution to the problems of the conventional lighting apparatus as described above, and the object thereof is an lighting apparatus that can be easily assembled and can easily be maintained and inspected. Is to provide. Furthermore, it aims at providing the illuminating device which employ | adopted the appropriate heat dissipation countermeasure.

  A lighting device according to the present invention includes a light-transmitting hollow body cover having a top portion closed and an opening on a proximal end side, and first engagement means formed on an inner wall of the opening; A light-emitting unit having an element disposed on the main surface side, the substrate being inserted from the opening of the cover and disposed along the longitudinal direction of the cover; and a lighting circuit for lighting the light-emitting element A lighting device composed of a housing having a light emitting unit disposed on one surface, a lighting device disposed on the other surface, and a heat sink with a recess formed on the end surface on the opening side And second engaging means that is screwed into the first engaging means of the cover is formed on the substantially cylindrical circumferential sleeve portion that serves as a lid for the opening of the cover, and is fitted to the recess of the heat sink. And a lid body on which cylindrical convex pieces to be joined are formed.

  The light-emitting element is a solid-state light-emitting element that can be disposed on a substrate such as a light-emitting diode or an organic EL. As long as the cover is a hollow body in which a cylindrical lid is screwed into the opening, the shape of the other part is not limited. In addition, the region where light is emitted from the light emitting element provided in the cover may be translucent, and it is not necessary that the entire region be translucent.

  In the illuminating device according to the present invention, a step portion for placing the heat sink is formed inside the cover, and the cylindrical convex piece is directed to the longitudinal direction of the cover and the upper portion of the heat sink provided in the cover. And the diameter of the cylindrical convex piece is longer than the width of the concave portion in the heat radiating plate.

  The illuminating device according to the present invention is characterized in that a means capable of confirming an appropriate coupling position between the lid and the cover by rotation of the lid is provided on the circumferential sleeve portion of the lid.

  According to the present invention, a heat sink in which a lighting device and a light emitting unit are disposed is inserted into the cover, and the cover is screwed into the cover at the opening of the cover so as to correspond to the recess of the heat sink. The cylindrical projecting piece is fitted, and the heat radiating plate on which the lighting device and the light emitting unit are disposed can be appropriately fixed in the cover simply by coupling the cover to the lid.

  According to the present invention, a step for placing the heat sink is formed inside the cover, and the diameter of the cylindrical convex piece is longer than the width of the recess in the heat sink. A cylindrical convex piece having an axis passing through the upper part of the provided heat sink is fitted so as to press from the upper side in the concave portion of the heat sink, and the heat sink provided with the lighting device and the light emitting unit is firmly fitted in the cover. Can be fixed.

  According to the present invention, the circumferential sleeve portion of the lid body is provided with means for confirming the appropriate coupling position between the lid body and the cover by the rotation of the lid body, so that the lid body can be rotated to the appropriate coupling position. Can be fixed.

The perspective view which shows the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The side view of the security light of FIG. The front view of the security light of FIG. The bottom view of the security light of FIG. FIG. 2 is a side sectional view of the security light of FIG. 1. The assembly perspective view of the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The perspective view which shows the principal part which concerns on fixation of the heat sink used for the crime prevention lamp which concerns on one Embodiment of the illuminating device of this invention. The perspective view which shows the principal part which concerns on fixing of the cover and cover body which are used for the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The partially cutaway perspective view which shows the lighting device used for the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The top view which shows the heat sink and circuit board which are used for the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The top view which shows the circuit board used for the crime prevention lamp which concerns on one Embodiment of the illuminating device of this invention.

  Embodiments of a lighting device according to the present invention will be described below with reference to the accompanying drawings. In each figure, the same components are denoted by the same reference numerals, and redundant description is omitted. The external appearance of the security light 10 as embodiment of an illuminating device is shown by FIGS. 1-4. The security light 10 includes a translucent cover 20 having a cylindrical shape with a flat side portion of a cone. This cover 20 is integrally formed of acrylic or polycarbonate. The cover 20 is a hollow body and has a cylindrical shape whose top is closed.

  FIG. 5 shows a sectional view of the security light 10 and FIG. 6 shows an assembled perspective view. Inside the cover 20, a light emitting unit 30 and a lighting device 40 are provided. A cover 60 is attached to the cover 20. The security light 10 is attached to an arm 50 bent in a “<” shape, and the arm 50 is attached to a utility pole or the like by means of a mounting bracket or the like.

  The cover 20 is composed of a light projecting portion 21 on the lower side and a shade portion 22 on the upper side in the installed state. The cover 20 has an opening 23 at a connection portion with the lid 60, and a storage chamber 24 that is a space is provided on the cover 20 side from the opening 23. A portion of the cover 20 surrounding the opening 23 is a tubular base portion 25. On the inner surface 29 of the base portion 25, a female screw 29a as a first engaging means is formed over the inner circumferential direction. The opening 23 is closed by the lid body 60. An end portion in a direction in which the storage chamber 24 side is viewed from the opening portion 23 is a front end portion 28 of the cover 20.

  A band-shaped protruding band portion 26 that protrudes outward and circulates around the outer periphery of the cover 20 is formed at a boundary portion between the light projecting portion 21 and the shade portion 22 of the cover 20. A groove portion 27 is formed inside the protruding band portion 26. At the front end portion 28 of the cover 20, a hook-shaped sandwiching portion 27 a that protrudes from the groove portion 27 toward the opening portion 23 is formed. For example, an aluminum radiating plate 31 is engaged with the sandwiching portion 27 a and the step portion 27 b of the groove portion 27. A recess 39 is formed in the center of the end of the heat sink 31 on the opening 23 side as shown in FIG. The concave portion 39 has a tapered portion 39b extending so as to spread from both ends of the innermost end portion 39a.

  The lid body 60 has a cylindrical shape, and a cylindrical circumferential sleeve portion 61 is formed up to approximately half of the distal end side. The circumferential sleeve portion 61 is secondly engaged with the female screw 29 a of the cover 20. A male screw 62 is formed. At the center of the end surface of the lid 60 facing the opening 23 of the cover 20, a cylindrical convex piece 65 is formed that fits in correspondence with the concave portion 39 of the heat radiating plate 31. The cylindrical convex piece 65 protrudes in the longitudinal direction of the cover 20 and has an axis passing through the upper part of the heat dissipation plate 31 provided in the cover 20. That is, the heat sink 31 is provided on the lower side (light irradiation side) in the installed state with respect to the position of the diameter of the cylindrical convex piece 65. As shown in FIG. 7, the diameter a of the cylindrical convex piece 65 is such that the concave portion 39 in the heat radiating plate 31 is longer than the length b of the innermost end portion 39a.

  Therefore, when the male screw 62 of the lid body 60 is screwed into the female screw 29a of the cover 20 and the lid body 60 is rotated to push the lid body 60 into the cover 20, the position lower than the diameter position of the cylindrical convex piece 65 is reached. The outer peripheral portion of the concave portion 39 follows the taper portion 39b of the concave portion 39 and proceeds to the innermost end portion 39a side so as to press the heat radiating plate 31 downward. The heat radiating plate 31 and the step portion 27b of the groove portion 27 and the lid body 60 act. Are firmly fixed by being sandwiched by the cylindrical convex pieces 65. The part located in the front-end | tip part 28 of the cover 20 in the heat sink 31 is clamped between the clamping part 27a and the step part 27b of the groove part 27 as already stated (FIG. 5). Thereby, the storage chamber 24 of the cover 20 is separated into the light projecting portion 21 side and the shade portion 22 side by the heat radiating plate 31.

  As shown in FIG. 8, a mounting base 66 having a flat surface is formed on the lid 60 that is coupled to the arm 50. A pair of holes 66a and 66a are formed in the mounting base 66. On the outer peripheral surface of the circumferential sleeve portion 61 in the lid body 60 and on the line segment orthogonal to the line segment in the center of the line segment connecting the holes 66a, 66a, the male screw 62 is cut off. A hole 67a and a square hole 67b are formed as means for confirming an appropriate coupling position between the lid 60 and the cover 20 by rotation.

  On the other hand, the two ridges 22a, 22a, which are positioned below the both end surfaces of the arm 50 when coupled to the arm 50, are located at the center position of the line segment virtually extending to the base portion 25 side of the cover 20. A hole 25a for inserting a coupling screw is formed in the groove 25b. When the male screw 62 of the cover body 60 is screwed into the female screw 29a of the cover 20 and the cover body 60 is rotated to push the cover body 60 into the cover 20, it will eventually be difficult to rotate.

  Between the step part 61a formed in the front end side of the circumferential sleeve part 61 in the lid 60 and the inner wall corner part 25c that is a corner part where the base part 25 is directed toward the light projecting part 21 side, the O-ring 19 is provided. Since it is interposed (FIG. 5), the screwing can be advanced or returned even in a state where it is difficult to rotate. The base portion 25 of the cover 20 is transparent or semi-transparent, and is formed in the hole 67a and the square hole 67b in the circumferential sleeve portion 61 of the lid body 60 and the base portion 25 of the cover 20 in the state where it is difficult to rotate. The hole 25a (or groove 25b) can be matched to confirm the appropriate coupling position of the lid 60 and the cover 20. In this state, the screw 25b can be inserted from the hole 25a of the base portion 25 and screwed into the hole 67a in the circumferential sleeve portion 61 to be fixed in an appropriate coupled state (FIG. 6). The holes 67a and square holes 67b of the lid 60, the holes 25a (or grooves 25b) formed in the base portion 25 of the cover 20 and the holes formed in the arm 50 are fixed together by screws or the like and fixed. You can also.

  Thereby, the circumferential sleeve portion 61 of the lid body 60 enters the storage chamber 24 side from the opening portion 23, and the O-ring 19 comes into contact with the inner wall corner portion 25 c in the base portion 25. The O-ring 19 is pressed between the inner wall corner portion 25c and the stepped portion 61a continuous from the circumferential sleeve portion 61 to be elastically deformed, and the inside of the opening portion 23 has a water-tight structure to ensure waterproofness.

  A pocket 69, which is a hole into which a mounting bracket 68 having a rectangular planar shape and an appropriate thickness can be inserted, is formed in the lower portion of the mounting base 66. Screw holes 68 a and 68 a corresponding to the holes 66 a and 66 a of the mounting base 66 are formed in the mounting bracket 68. In addition, holes corresponding to the holes 66 a and 66 a of the mounting base 66 are formed at corresponding positions of the arm 50. Therefore, the mounting bracket 68 is inserted into the pocket 69, and the screws 51 and 51 are screwed into the screw holes 68a and 68a of the mounting bracket 68 through the holes 66a and 66a of the mounting base 66 and the arm 50. It can be fixed to the security light 10 (FIG. 6).

  A circuit board 32 which is a paper phenol base circuit board, for example, is attached to the heat radiating plate 31 with screws 52 as an insulating circuit board constituting the light emitting unit 30. A lighting device 40 is provided on the surface of the heat radiation plate 31 to which the circuit board 32 cannot be attached. The lighting device 40 is attached to the circuit board 32 by screws through screw holes 37a.

  As shown in FIG. 9, the lighting device 40 includes a rectangular parallelepiped housing 40a in which electronic components 43 such as a capacitor C, a transformer T, and a coil L mounted on a printed circuit board 42 are mounted. The electronic circuit which comprises etc. produces DC voltage, and supplies it to LED33. The printed circuit board 42 is fixed by locking claws 44 and 45 at a predetermined distance from the top board 41a. That is, the locking claws 44 and 45 are each formed in a corner near the top plate 41a of the large side plate 41b, and the side plate 41b is formed by punching, leaving one vertical side in a quadrangle. The window frames 44a and 45a are formed by punching, and the locking claws 44 and 45 extending in a square shape from the sides 44b and 45b of the windows on the different sides are bent inward by a jig to sandwich the printed circuit board 42 from above and below. Fix it.

  The housing 40a is fixed to the heat radiating plate 31 by providing screws 47 on the screw seats 46 in which holes are formed, with the edge 41a surrounding the opening of the housing 40a in contact with the heat radiating plate 31. It arrange | positions so that about 2/3 of the longitudinal direction of the housing | casing 40a may exist in the recessed part 39 side from the longitudinal direction centerline of the heat sink 31 (FIG. 10). Thereby, the lighting device 40 is disposed at a position in the heat radiating plate 31 in consideration of the thermal balance.

  In other words, the security light 10 is attached to a utility pole or the like with the tip 20 of the cover 20 tilted so that the front end 28 side is at a higher position on the lid 60 side. Heading to the tip portion 28 of 20. For this reason, an appropriate heat countermeasure is taken without providing a heat source such as the lighting device 40 at a portion of the heat radiating plate 31 located on the tip portion 28 side of the cover 20. The dimension from the heat sink 31 to the head of the electronic component 43 is a necessary and sufficient insulation distance, and the heat generated by the electronic component 43 does not affect the heat sink 31 (is not thermally coupled). It has become.

  A fixed connector CN1a for receiving power is provided at one end in the longitudinal direction of the printed circuit board 42, and a fixed connector CN2a for supplying power is provided at the other end of the printed circuit board 42 in the longitudinal direction. Is provided. An insertion / removal connector CN1b coupled to the fixed connector CN1a is attached to the tip of the power supply line 38 on the power supply side shown in FIG.

  As shown in FIG. 10, the light emitting unit 30 includes a circuit board 32 and an LED 33 which is a light emitting element. As shown in FIG. 11, a plurality (eight in this case) of LEDs 33 are mounted at a predetermined interval on the main surface side where the wiring pattern 34 made of copper foil is formed. On the back side, not shown, is a single-sided substrate on which no wiring pattern is formed.

  The wiring pattern 34 has a relatively large area because it has a function of transferring the heat generated by the LED 33 through the lead terminal and the copper foil pattern and radiating heat from the surface to the outside by conduction and conduction. , And provided in 8 areas divided by the insulating pattern 35. The wiring pattern 34 includes lands that connect the LEDs 33 at appropriate positions via the insulating pattern 35. A capacitor C is electrically connected to each of the eight LEDs 33 in parallel. Two adjacent wiring patterns 34 are provided with power lands 36, 36, and power is supplied to eight LEDs 33 connected in series by eight wiring patterns 34. The power lands 36 and 36 are positioned at the positions of the through holes 16 of the heat radiating plate 13. The screw hole 37 a of the circuit board 32 is for attaching to the heat radiating plate 31 with the screw 52, and the screw hole 37 is used for fixing the housing 40 a of the lighting device 40 with the screw 47.

  As shown in FIG. 5, a power distribution portion 42 that protrudes toward the lid 60 in a cylindrical shape is formed on the back surface of the columnar convex piece 65 in the lid 60. A waterproof bush 48 is fitted to the power distribution unit 42 and is fixed to the power distribution unit 42 with a mounting bracket 49 and a screw 49a. A power supply line 38 for supplying power is inserted into the waterproof bush 48 and power is supplied to the lighting device 40.

  As shown in FIG. 6, the lead wires 14 connected to the power supply lands 36, 36 of the circuit board 32 pass through the through holes 36a, 36a of the lands 36, 36 to the through hole 16 and are fixed to the tip. An insertion / removal connector CN2b for coupling to the connector CN2a is attached.

  The power supply line 38 is fixed to the heat radiating plate 31 by a resin band 15 in a portion near the base of the insertion / extraction connector CN1b. This position is close to the fixed connector CN1a of the lighting device 40, and the insertion / removal connector CN1b provided at the tip of the power supply line 38 is coupled to the fixed connector CN1a in the housing 40a.

  The insertion / removal connector CN2b goes out to the surface of the heat radiating plate 13 to which the lighting device 40 is attached through a through hole 16 formed in the heat radiating plate 13. The through hole 16 is formed at a position close to the fixed connector CN2a of the lighting device 40. Therefore, the lead wire 14 can be shortened, and the insertion / removal connector CN2b connected to the lead wire 14 is easily coupled to the fixed connector CN2a in the housing 40a.

DESCRIPTION OF SYMBOLS 10 Security light 20 Cover 25 Base part 26 Crest part 30 Light emitting unit 31 Heat sink 32 Circuit board 33 LED
40 lighting device 50 arm 60 base 65 cylindrical convex piece

Claims (3)

A translucent hollow body cover having a top closed and an opening on the proximal end, and first engagement means formed on the inner wall of the opening;
A light emitting unit in which the light emitting element has a substrate disposed on the main surface side, and the substrate is inserted from the opening of the cover and disposed along the longitudinal direction of the cover;
A lighting device comprising a housing containing a lighting circuit for lighting a light emitting element;
A heatsink having a light emitting unit disposed on one surface side, a lighting device disposed on the other surface, and a recess formed on an end surface on the opening side;
Second engagement means that is screwed into the first engagement means of the cover is formed in a substantially cylindrical circumferential sleeve portion that serves as a lid for the opening of the cover, and is fitted in correspondence with the recess of the heat sink. A lighting device comprising: a lid body on which a cylindrical convex piece is formed. On the inner side of the cover, a step for mounting the heat sink is formed,
The cylindrical convex piece has an axial center that extends in the longitudinal direction of the cover and passes through the upper part of the heat sink provided in the cover, and the diameter of the cylindrical convex piece is longer than the width of the concave portion in the heat sink. The lighting device according to claim 1.   The lighting device according to claim 1, wherein means for confirming an appropriate coupling position between the lid and the cover by rotation of the lid is provided in the circumferential sleeve portion of the lid.

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