JP2012221598A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system securing a waterproof performance and capable of reducing degree of bending in torsion of wiring when a cover member is detached.SOLUTION: The lighting system is provided with a light source part 2, a translucent cover member 1 in which the light source part 2 is supported and housed, a base body part 5 with which the cover member 1 is insertion engaged in watertight state by rotation, and a wiring part 54 having a wiring through hole 54b which is installed in the base body part 5, and through which a wiring 53 led out from the light source part 2 side is inserted, and in which the ratio of the total dimension d of the diameter of the wiring 53 against the dimension D1 of one side diameter is 0.89-0.99 and the dimension D2 of the diameter on the other side is formed larger than the dimension D1 of the one side diameter.

Description

  Embodiments described herein relate generally to a lighting device having a waterproof structure.

  Conventionally, in an outdoor lighting device such as a security light or a street light, a waterproof structure satisfying a predetermined waterproof performance has been adopted in order to prevent rainwater or the like from entering the instrument body.

  For example, in a security light as a lighting device, a light source unit supported and accommodated in a light-transmitting cover member and wiring such as a lead wire led out from a lighting device that controls lighting of the light source unit are connected to the base unit. The waterproof bushing provided is inserted and led out to the outside.

JP 2011-18469 A JP 2011-34856 A

  However, in the case of the waterproof structure as described above, the wiring is tightly held by the waterproof bushing when the cover member is rotated and removed from the base portion in maintenance such as replacement of the cover member. There is a possibility that a twist occurs, the degree of bending is large, and damage such as wire breakage or stress is applied and the connection part is disconnected.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an illuminating device capable of ensuring waterproof performance and reducing the degree of bending of wiring torsion when removing a cover member. .

  An illuminating device according to an embodiment of the present invention includes a light source unit, a light-transmitting cover member that is supported and accommodated by the light source unit, and a base unit that is fitted in a watertight state by rotation of the cover member. It has.

Further, the wiring provided on the base unit and led out from the light source unit side is inserted, and the ratio of the total diameter of the wiring to the dimension of the diameter on one side is 0.89 to 0.99, and The wiring part which has the wiring penetration hole formed in the dimension of the diameter of the other side larger than the dimension of a diameter is provided.

  According to the embodiment of the present invention, it is possible to provide a lighting device that can ensure predetermined waterproof performance and can reduce the degree of bending of the twist of the wiring when the cover member is removed.

It is a perspective view which shows the illuminating device which concerns on embodiment of this invention. It is a side view which shows the same illuminating device. It is side sectional drawing which shows the same illuminating device. It is a perspective view which decomposes | disassembles and shows the same illuminating device. It is a perspective view which shows the same illuminating device seeing from the rear part. In the same illuminating device, it is a perspective view which removes and shows a cover member. It is sectional drawing which expands and shows the wiring part in the illumination device. It is explanatory drawing which shows the wiring part in the illumination device seeing from the inside. It is explanatory drawing which shows the wiring part in the illumination device seeing from the outside.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. In the present embodiment, a security light is shown as the lighting device. The security light is used to be installed on a utility pole on a road, a pole in a park, an outer wall of a factory, etc., and mainly ensures the safety of pedestrians.

  1 is a perspective view showing a security light, FIG. 2 is a side view, FIG. 3 is a side sectional view, and FIG. 4 is an exploded perspective view. FIG. 5 is a perspective view showing the security light as seen from the rear, FIG. 6 is a perspective view showing the cover member removed, and FIG. 7 is an enlarged sectional view showing the wiring part. Furthermore, FIG. 8 is an explanatory diagram viewed from the inside in the wiring portion, and FIG. 9 is an explanatory diagram viewed from the outside in the wiring portion. In addition, the same code | symbol is attached | subjected to the same part in each figure, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 1 to 4, the security light includes a cover member 1 having translucency, a light source unit 2, a mounting member 3 to which the light source unit 2 is attached, and a lighting device 4 that controls lighting of the light source unit 2. And a base portion 5 and an arm 6 attached to the base portion 5.

  The cover member 1 has a distal end portion 11 closed, an opening 13 formed on the proximal end portion 12 side, and is formed in a cylindrical shape. The cover member 1 is integrally formed of a translucent resin such as acrylic or polycarbonate and has translucency as a whole. In addition, a white pigment or a light diffusing material is added to the translucent resin for forming the cover member 1, and as a whole, a milky white appearance is exhibited. Note that the cover member 1 may be entirely transparent or partially transparent.

  The cover member 1 includes a cylindrical body 1a on the distal end portion 11 side and a flange portion 1b on the proximal end portion 12 side. The flange portion 1b of the base end portion 12 has a cylindrical outer periphery, and the inner opening 13 has a circular outline. The cylinder body 1a is integrally formed with a cylindrical shape slightly smaller than the outer diameter of the flange portion 1b from the flange portion 1b toward the distal end portion 11 side.

  A light projecting portion 14 and a shade portion 15 are formed on the tube main body 1 a of the cover member 1. The cylinder body 1a functions as a light projecting unit 14 whose front side (light irradiation direction side, lower side in the drawing) transmits light irradiated to the road surface, and the rear side (upper side in the drawing) functions as a cap portion 15. To do. A substantially U-shaped wall portion 15a is formed on the back side of the cap portion 15 on the flange portion 1b side, and the wall portion 15a is formed at a height such that the tips thereof are aligned and flat. Has been. A housing space 16 that communicates with the opening 13 is formed inside the cover member 1, and the housing space 16 is a substantially closed space that does not communicate with anything other than the opening 13.

A female threaded portion 17a is formed in the inner circumferential direction on the inner side surface 17 of the flange portion 1b, and a flat surface 17b is formed continuously in the inner circumferential direction on the distal end portion 11 side from the female threaded portion 17a. ing. The cylinder main body 1a is a tapered cylindrical body having an inclined surface S that is slightly curved as the outer diameter decreases toward the distal end portion 11. In particular, the outer diameter dimension in the vertical direction of the cylinder main body 1a is larger at the rate of decreasing toward the distal end portion 11 than the outer diameter dimension in the width direction, and the cross-sectional shape of the cylindrical main body 1a near the distal end portion 11 is longer in the width direction. It becomes a flat, substantially elliptical shape.

  Around the width direction of the tube body 1 a of the cover member 1, a step portion 18 that protrudes slightly outward from the outer peripheral surfaces of the light projecting portion 14 and the shade portion 15 is continuously formed in a band shape. By projecting the step portion 18 to the outside, the step portion 18 functions as a ridge of the light projecting portion 14, and it becomes difficult for water droplets during rainfall to flow down to the light projecting portion 14. Dirt becomes difficult to adhere to.

  A groove portion 19 that opens into the accommodation space 16 is formed inside the step portion 18. That is, the groove portions 19 are provided in the width direction at least along the longitudinal direction of the cover member 1, and a pair of groove portions 19 are formed as viewed from the opening portion 13.

  The wall thickness of the cover member 1 is about 2.5 mm as a whole including the cylinder main body 1a and the flange portion 1b, and predetermined characteristics such as mechanical strength, diffusion transmittance, heat radiation action and weather resistance are secured. ing.

  The light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21. The substrate 21 is a printed board made of paper phenol formed in a substantially rectangular shape, and a wiring pattern (not shown) and a land for connecting terminals of the light emitting element 22 are formed on the surface side of the substrate 21 with a copper foil. Yes. In addition, as a material of the board | substrate 21, when using it as an insulating material, a ceramic material, a glass epoxy material, and another synthetic resin material are applicable. Furthermore, when it is made of metal, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good thermal conductivity such as aluminum and excellent heat dissipation can be applied.

  Seven light emitting elements 22 that emit white light are linearly mounted on the surface side of the substrate 21 at a predetermined interval. The light emitting element 22 is an LED, which is a surface mount type LED package. Schematically, it consists of an LED chip placed on the body made of ceramics or heat-resistant synthetic resin, and a translucent resin for molding such as epoxy resin or silicone resin that seals the LED chip Has been. In this translucent resin, a phosphor is mixed in order to emit white light.

  A lens member 23 formed of a transparent material such as an acrylic resin having a lens portion formed so as to face each light emitting element 22 is disposed on the front side of the substrate 21.

  The light source unit 2 is attached to the attachment member 3. The mounting member 3 is made of a metal material having good thermal conductivity such as aluminum, and the tip side is formed in an arc shape and has a flat plate shape.

  The light source unit 2 is disposed on the front side of the mounting member 3 and is attached by a fixing means so that the back side (back side) of the substrate 21 is in close contact with the front side of the mounting member 3. Specifically, as representatively shown in FIG. 4, the screw penetrates the screw through hole formed in the substrate 21 and the screw through hole formed in the attachment member 3, and further in the case 44 of the lighting device 4 described later. The board 21 and the case 44 are simultaneously fastened and attached to the mounting member 3 by mounting bolts B that are tightened by nuts through the screw through holes formed in the mounting tongue 44b.

  A lighting device 4 electrically connected to the light source unit 2 by a lead wire or the like is disposed on the back side of the mounting member 3. As representatively shown in FIGS. 3 and 4, the lighting device 4 includes a circuit board 41, a circuit component 42 mounted on the front side (front side) of the circuit board 41, and a rear side ( And an optical sensor 43 mounted on the back surface side.

  The circuit board 41 is made of an insulating material such as glass epoxy resin, and is formed in a substantially rectangular plate shape. On the surface side, the control IC, capacitor, winding component, resistance element, etc. are mainly large in height. A circuit component 42 is mounted. In addition, a circuit component 42a having a relatively small height such as a switching element or a surface-mounted component is mounted on the back side of the circuit board 41, and an optical sensor 43 is mounted on the tip side.

  The optical sensor 43 is composed of a photoelectric conversion element such as a photodiode that operates by sensing ambient brightness, and the blinking operation of the light source unit 2 is controlled by the detection output of the optical sensor 43.

  Such a lighting device 4 is mounted and accommodated in a case 44 made of a metal such as aluminum having thermal conductivity so that the circuit component 42 mounted on the circuit board 41 faces the back side of the mounting member 3. ing. The case 44 is formed in a substantially rectangular parallelepiped box shape, and a substantially circular light receiving hole 44 a is formed on the back wall so as to face the optical sensor 43. Moreover, the attachment tongue piece 44b is extended and formed in the short side which the front side opposes.

  Therefore, as described above, the lighting device 4 is mounted together with the board 21 by the mounting bolt B inserted from the front side of the board 21 on the back side of the mounting member 3 with the mounting tongue piece 44b of the case 44 attached. Arranged.

  The attachment member 3 having the light source part 2 attached to the front side and the lighting device 4 attached to the back side is inserted into the pair of groove parts 19 opened in the accommodation space 16 of the cover member 1 to the cover member 1. Supported. Further, the distal end side of the attachment member 3 is also engaged with a groove portion 19 that is continuous with the distal end portion 11. Thus, the housing space 16 of the cover member 1 is substantially divided by the mounting member 3 into the light projecting portion 14 side and the shade portion 15 side.

  In the arrangement state of the lighting device 4, since the optical sensor 43 is mounted on the back side of the circuit board 41, the light sensor 43 is disposed so as to approach the cover member 1 and to be separated from the cover member 1. In addition, since the optical sensor 43 is opposed to the inclined surface S of the cylindrical main body 1a of the cover member 1, the distance from the cover member 1 is further shortened. Therefore, it is easy for outside light to reach the optical sensor 43 and the light receiving environment is good, and the light source unit 2 can be controlled by appropriate detection.

  The lighting device 4 as described above is connected to a commercial AC power supply via a lead wire 53 as a wiring. Therefore, the lighting device 4 receives the AC power supply, generates a DC output, supplies the DC output to the light emitting element 22, and controls the light emitting element 22 to turn on.

  The base 5 has a closing part 51 that closes the opening 13 of the cover member 1. The base portion 5 is integrally formed with a closing portion 51 of a resin having excellent weather resistance and flame retardancy such as ASA resin, and is formed in a bottomed cylindrical shape whose base end side is opened outward. .

  The closing part 51 has a cylindrical shape, and a male screw part 51c is formed at a position where it is screwed to the female screw part 17a on the inner surface side of the flange part 1b. Further, an annular groove 51b is formed continuously in the circumferential direction at a portion facing the flat surface 17b on the inner surface side of the flange portion 1b, and the O-ring that contacts the flat surface 17b is formed in the groove 51b. 52 is inserted.

  That is, the male screw part 51c of the closing part 51 is screwed into the female screw part 17a on the inner surface side of the flange part 1b, and the both are fitted, whereby the closing part 51 of the base part 5 enters the housing space 16 side from the opening part 13. The O-ring 52 comes into contact with the flat surface 17b of the inner surface 17 of the flange portion 1b. The O-ring 52 is pressed between the flat surface 17b and the concave groove 51b of the closing portion 51 to be elastically deformed, so that the inside of the opening portion 13 has a watertight structure, and waterproofness is ensured.

  As representatively shown in FIGS. 3 and 5 to 9, a closing plate 51 a that closes the opening 13 is provided on the distal end side of the closing portion 51, and the proximal end of the closing plate 51 a and the attachment member 3 is provided. The attachment member 3 is fixed in contact with the side.

  Near the central portion of the blocking plate 51a, there is provided a wiring portion 54 through which a lead wire 53 as a wiring led out from the light source portion 2 side, that is, a lead wire 53 for supplying power to the lighting device 4 is inserted. The wiring portion 54 is formed with a cylindrical portion 54a having a wiring insertion hole 54b formed therein, and the lead wire 53 is inserted into the wiring insertion hole 54b to ensure the waterproofness of the wiring portion 54. Yes.

  More specifically, as shown in FIGS. 7 to 9, the wiring insertion hole 54b is formed in a substantially cylindrical shape, and the inner diameter dimension D1 (mm) and the outer diameter dimension D2 (mm) are defined as follows. The outer diameter D2 (mm) is slightly larger than the inner diameter D1 (mm), and the dimensional relationship is D1 <D2. That is, the diameter dimension is formed to D2 (mm) from the outside of the wiring insertion hole 54b to the vicinity of the center portion, and the diameter decreases in a tapered shape from the center portion toward the inside, and the inner diameter dimension is D1. (Mm).

  The wiring insertion hole 54b is continuously tapered from the outside to the inside, and the inner diameter is formed to D1 (mm) and the outer diameter is formed to D2 (mm). May be.

  In addition, two lead wires 53 having a diameter d1 (mm) are inserted through the wiring insertion hole 54b. Accordingly, the lead wire 53 having a diameter d1 (mm) × 2 and having a total diameter of d (mm) is inserted. The wiring insertion hole 54b has a predetermined length dimension L (mm).

In such a wiring part 54, as a result of performing various experiments and tests from the viewpoint of securing waterproof performance and reducing the twist of the lead wire 53 described later, the dimensional relationship between the wiring insertion hole 54b and the lead wire 53 is as follows. We obtained the opinion that it is preferable to set this way.
(1) The ratio of the total dimension d (mm) of the diameter of the lead wire 53 to the dimension D1 (mm) of the inner diameter in the wiring insertion hole 54b is 0.89 to 0.99.
(2) The ratio of the outer diameter D2 (mm) to the inner diameter D1 (mm) in the wiring insertion hole 54b is 1.1 to 1.4.
(3) The length L (mm) of the wiring insertion hole 54b is 4 to 6 times the inner diameter D1 (mm).

  In the present embodiment, the inner diameter dimension D1 (mm) of the wiring insertion hole 54b is φ6 mm, and the outer diameter dimension D2 (mm) is φ7.3 mm. The diameter d1 (mm) of one lead wire 53 is about φ2.7 mm. Further, the length L (mm) of the wiring insertion hole 54b is 30 mm.

Accordingly, the ratio of the total diameter d (mm) of the lead wire 53 to the inner diameter D1 (mm) is 5.4 mm / φ6 mm = 0.9, and the wiring insertion hole 54 b and the lead wire 53 are separated from each other. There is a clearance of 0.6 mm between them.
The ratio of the outer diameter dimension D2 (mm) to the inner diameter dimension D1 (mm) is φ7.3 mm / φ6 mm≈1.22.

  Further, since the length dimension L (mm) of the wiring insertion hole 54b is 30 mm and the inner diameter dimension D1 (mm) is φ6 mm, the length dimension L (mm) is equal to the inner diameter dimension D1 ( mm) 5 times (30 mm / φ6 mm).

  By setting the dimensional relationship between the wiring insertion hole 54b and the lead wire 53 in this manner, it is possible to ensure a predetermined waterproof performance, and moisture such as rainwater enters the cover member 1 from the wiring insertion hole 54b. Can be prevented. For example, when water reaches the outside of the wiring insertion hole 54b, the water accumulates in a droplet shape at the hole edge portion at the outer diameter D2 (mm) and falls due to its own weight. In addition, since the dimension D1 (mm) of the inner diameter is small, it is possible to effectively prevent water from entering.

  For example, in the case of using a wiring in which two lead wires are bundled together by a jacket, the total dimension d (mm) of the lead wire diameter is the dimension d (mm) of the jacket diameter. It becomes.

  Next, for example, in maintenance such as replacement of the cover member 1, as shown in FIG. 6, the cover member 1 is rotated in the direction of the arrow to be detached from the base portion 5. When the cover member 1 is rotated, the light source unit 2 and the lighting device 4 are supported on the cover member 1 side, and a lead wire 53 is connected thereto.

  Therefore, if the lead wire 53 is tightly held by the waterproof bushing as in the prior art, when the cover member 1 is rotated, the lead wire 53 extends from the connection portion of the lighting device 4 to the waterproof bushing. In the meantime, twisting occurs with rotation. Since this twist occurs in a relatively short length from the connecting portion of the lighting device 4 to the waterproof bushing, the twist of the lead wire 53 is large, and the lead wire 53 is broken and stressed and connected. The part may come off, and the problem that the replacement of the cover member 1 becomes difficult occurs.

  However, the present embodiment is configured to reduce the degree of twisting of the lead wire 53 in the dimensional relationship between the wire insertion hole 54b and the lead wire 53 that passes through the wire insertion hole 54b. That is, the total diameter d (mm) of the lead wire 53 is slightly smaller than the inner diameter D1 (mm) of the wiring insertion hole 54b, and a clearance is formed. Further, the outer diameter dimension D2 (mm) is larger than the inner diameter dimension D1 (mm).

Accordingly, as the cover member 1 rotates, the lead wire 53 can be rotated in the wiring insertion hole 54b. That is, the lead wire 53 is relatively connected from the connection portion of the lighting device 4 to the connection portion on the power source side. Since it becomes twisted in a long length part, it becomes possible to reduce the bending degree of twist.
Therefore, it is possible to reduce the degree of bending of the lead wire 53 while ensuring a predetermined waterproof performance.

In the above description, the case has been described in which the outer diameter D2 (mm) of the wiring insertion hole 54b is slightly larger than the inner diameter D1 (mm), and D1 <D2. The relationship between the inner diameter dimension D1 (mm) and the outer diameter dimension D2 (mm) is reversed, the outer diameter dimension D2 (mm) is decreased, and the inner diameter dimension D1 (mm) is increased. The dimensional relationship of D2 <D1 may be satisfied.
Therefore, the relationship between the dimension of the diameter on one side and the dimension of the diameter on the other side in the wiring insertion hole 54b may be set to the dimensional relationship as described above.

  Again, as shown in FIGS. 1 to 4, a cylindrical step portion 55 having substantially the same diameter as the flange portion 1 b is formed integrally with the closing portion 51 on the base end side of the base portion 5. A slit portion 56 that opens toward the outside is provided in an upper portion of the cylindrical step portion 55, and a metal mounting plate 57 in which two screw holes are formed is fitted in the slit portion 56. ing. A screw insertion hole is formed at a position corresponding to the screw hole of the mounting plate 57 of the cylindrical step portion 55.

  The crime prevention light of the present embodiment is attached to a pole such as a utility pole installed on the road surface by the arm 6. The arm 6 has a curved portion 61 in which an intermediate portion of a U-shaped metal piece is bent in a substantially L shape, and a through hole 62 and a mounting screw of a mounting band wound around a power pole at a base end portion. A locking hole 63 is formed.

  A screw attachment portion 64 is formed on the tip side of the curved portion 61 of the arm 6, and two screws inserted into the screw attachment portion 64 are inserted into the slit portion 56 of the base portion 5. The base 5 is attached to the arm 6 by being screwed into the screw hole of the attachment plate 57, and the security light is supported by the arm 6. At this time, the major axis direction of the cover member 1 is installed at an angle of about 20 ° to 30 ° with respect to the horizontal plane so that the distal end portion 11 side is directed upward by the curved portion 61 of the arm 6.

Therefore, the opening 13 of the cover member 1 is always directed downward in the installed state, so that water droplets due to rainfall are less likely to enter the opening 13 and the waterproof performance is improved. Furthermore, since the efficiency of the convection and heat exchange in the shade portion 15 is improved by directing the front end portion 11 side of the cover member 1 having a relatively large surface area upward, the heat dissipation characteristics can also be improved.
In the crime prevention light configured in this way, when the outdoors becomes dark, power is supplied to the light source unit 2 from the power source side via the lighting device 4 by the detection output of the optical sensor 43, and the light emitting element 22 is turned on. Further, when the outdoors becomes bright, the power is cut off by the detection output of the optical sensor 43 and the light emitting element 22 is turned off.

  In this case, the optical sensor 43 is mounted on the back side of the circuit board 41, and is further disposed so as to face the inclined surface S of the cover member 1, so that external light is detected through the light receiving hole 44a. The light source unit 2 is appropriately controlled by detecting the appropriate brightness of the light sensor 43.

  In the lighting state of the security light, the light emitted from the light emitting element 22 passes through the lens member 23, passes through the translucent cover member 1, and is emitted outward in a desired light distribution state.

  On the other hand, heat is generated from the light emitting element 22 while the light emitting element 22 is turned on. This heat is conducted from the substrate 21 to the mounting member 3 and dissipated. Furthermore, heat conduction is promoted from the mounting member 3 to the case 44 in which the lighting device 4 is accommodated. At the same time, the heat generated from the lighting device 4 is mainly conducted to the case 44 and radiated.

  As described above, according to the present embodiment, it is possible to provide a lighting device that can ensure predetermined waterproof performance and can reduce the degree of bending of the lead wire 53 when the cover member 1 is removed. can do.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary of invention. For example, as the light source of the light source unit, a solid light emitting element or a discharge lamp that can be mounted on a substrate such as an LED or an organic EL can be applied, and is not particularly limited.

Moreover, the lighting device that controls the lighting of the light source unit may not be accommodated in the cover member. That is, the lighting device can be applied to a so-called separate type lighting device.
Furthermore, the lighting device is not limited to a crime prevention light, but can be applied to various lighting devices such as a street light, a garden light, and a projector.

1 ... cover member, 2 ... light source part,
3 ... mounting member, 4 ... lighting device,
5 ... Base part, 6 ... Arm,
21 ... substrate, 22 ... light emitting element (LED),
53 ... Wiring (lead wire), 54 ... Wiring section,
54b ... wiring insertion hole,
D1 ... Dimension of inner diameter, D2 ... Dimension of outer diameter,
d: Total dimension of wiring diameter, L: Length dimension of wiring insertion hole

Claims (3)

A light source unit;
A translucent cover member in which the light source is supported and accommodated;
A base portion in which the cover member is fitted in a watertight state by rotation;
A wiring provided on the base portion and led out from the light source side is inserted, and the ratio of the total diameter of the wiring to the dimension of the diameter on one side is 0.89 to 0.99, and the diameter on the one side A wiring portion having a wiring insertion hole formed with a diameter on the other side larger than the dimension of the wiring;
An illumination device comprising:   2. The lighting device according to claim 1, wherein the wiring insertion hole has a ratio of a dimension of a diameter on the other side to a dimension of a diameter on one side of 1.1 to 1.4.   3. The lighting device according to claim 1, wherein a length dimension of the wiring insertion hole is formed to be 4 to 6 times a dimension of a diameter on one side. 4.

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