JP2019139971A - Lighting fixture - Google Patents

Abstract

To provide a lighting fixture that can decrease the number of components.SOLUTION: A lighting fixture comprises a housing 2, a light source 20 and a lens member 30. The housing 2 has a storage part. The light source 20 has a substrate 21 arranged to cover the storage part, and a plurality of light emitting elements 22 mounted on the substrate 21. The lens member 30 has a plurality of recessed parts 32 facing the plurality of light emitting elements 22, respectively, and is slid to be locked to the substrate. The recessed parts 32 extend to face the light emitting elements 22 before and after the lens member 30 is slid.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to a lighting fixture.

  There is known a lighting fixture in which a light source is disposed on a lower surface of a housing and a lens member is disposed so as to cover the light source. Such luminaires are used, for example, as crime prevention lights and street lights.

  Conventionally, a lens member is fixed to, for example, a substrate or a housing using a plurality of screws, and a predetermined positional accuracy with respect to a light source is ensured. In recent years, cost reduction by reducing the number of parts has been studied, but it has not always been sufficient.

JP 2017-10773 A

  The problem to be solved by the present invention is to provide a lighting apparatus capable of reducing the number of parts.

  The lighting fixture of the embodiment includes a housing, a light source, and a lens member. The housing has a housing portion. The light source has a substrate disposed so as to cover the housing portion and a plurality of light emitting elements mounted on the substrate. The lens member has a plurality of concave portions facing each of the plurality of light emitting elements, and is locked to the substrate by sliding. The recess extends so as to face the light emitting element before and after sliding of the lens member.

  According to the present invention, the number of parts can be reduced.

It is a side view which shows the example of an external appearance of the lighting fixture which concerns on embodiment. It is a disassembled perspective view which shows the lighting fixture which concerns on embodiment. It is a sectional side view which shows the lighting fixture which concerns on embodiment. It is AA sectional drawing of FIG. 1 which shows the lighting fixture which concerns on embodiment. It is a perspective view which shows an example of the lens member latched by a board | substrate.

  A lighting fixture 1 according to an embodiment described below includes a housing 2, a light source 20, and a lens member 30. The housing 2 has a housing 3. The light source 20 includes a substrate 21 disposed so as to cover the housing 3 and a plurality of light emitting elements 22 mounted on the substrate 21. The lens member 30 has a plurality of concave portions 32 respectively facing the plurality of light emitting elements 22 and is locked to the substrate 21 by sliding. The recess 32 extends to face the light emitting element 22 before and after the lens member 30 slides.

  In addition, the housing 2 according to the embodiment described below has a daylighting hole 7 that communicates with the housing 3, detects ambient light and darkness, and includes an optical sensor 25 mounted on the substrate 21, and the daylighting hole 7. And a light-shielding tube 14 that covers the outer periphery of the one end 13 a side of the sensor cover 13 that is translucent and that accommodates the optical sensor 25.

  Embodiments according to the present invention will be described below with reference to the drawings. In addition, the embodiment shown below does not limit the technique which this invention discloses. In the embodiment, the same portions are denoted by the same reference numerals, and redundant description is omitted.

  Drawing 1 is a side view showing an example of appearance of a lighting fixture concerning an embodiment. FIG. 2 is a side sectional view showing the lighting apparatus according to the embodiment. FIG. 3 is an exploded perspective view showing the lighting apparatus according to the embodiment. As shown in FIGS. 1 to 3, the luminaire 1 includes a housing 2, a light source 20, an optical sensor 25, a lens member 30, a packing 40, and a globe 50. The lighting fixture 1 is a lighting fixture in which the light source 20 is turned on or off based on ambient light and darkness detected by the optical sensor 25. The luminaire 1 is mainly used outdoors, for example, as a security light or a street light.

  The housing 2 includes a housing portion 3, inner walls 4 and 5, a mounting portion 6, a daylighting hole 7, a wiring hole 8, a vent hole 9, and an annular groove 10. The housing | casing 2 is comprised, for example with metals, such as steel or an aluminum alloy. The housing | casing 2 is formed in the long shape in the length direction from the one end side which has the attaching part 6 to the other end side.

  The accommodating portion 3 is provided so as to extend in the length direction of the housing 2, and is opened so as to face the globe 50. A substrate 21 described later is disposed between the housing 2 and the globe 50 so as to cover the housing portion 3.

  The inner wall 4 is a plate-like member that extends in the width direction orthogonal to the length direction of the housing 2, and is integrally formed inside the housing portion 3. The inner wall 4 is disposed in an intermediate region in the length direction of the accommodating portion 3. The inner wall 5 is a plurality of plate-like members protruding in the length direction from the other end side in the length direction of the housing 2 toward the inner wall 4 side. The inner walls 4 and 5 are disposed so as to protrude from the bottom surface 2 b of the housing 2 toward the globe 50 and to contact the substrate 21. In addition, the inner walls 4 and 5 are formed in the area | region where the light emitting element 22 of the board | substrate 21 mentioned later is mounted. Further, the inner wall 5 in the length direction is positioned on the back surface of the substrate 21 on which the light emitting element 22 is mounted, so that the heat of the light emitting element 22 during lighting can be efficiently conducted. Of the housing part 3, the part on the other end side of the housing 2 across the inner wall 4 may be referred to as a light source side housing part 3 a. In the present embodiment, the two inner walls 5 are formed at a predetermined interval, but it is sufficient that one or more inner walls 5 are provided.

  The attachment portion 6 is formed on one end side in the length direction of the housing 2 and is attached to a pole, a utility pole, or the like installed on the side of the road using an attachment member such as a wire or a clamp.

  The daylighting hole 7, the wiring hole 8, and the air hole 9 are through-holes provided so as to communicate the outside of the housing 2 with the housing portion 3. In the present embodiment, the daylighting hole 7 is provided closer to one end side in the middle portion in the length direction, and the wiring hole 8 and the vent hole 9 are respectively formed on one end side having the attachment portion 6.

  The daylighting hole 7 takes light from the outside of the luminaire 1 into the housing 3. The wiring hole 8 draws a wiring for supplying power to the lighting device 27 into the housing 3. A bushing 11 made of, for example, resin or rubber is fitted into the peripheral edge of the wiring hole 8. The bushing 11 is provided with an insertion hole 11a for inserting a wiring (not shown). The vent hole 9 is closed by an internal pressure adjusting filter 9a that allows gas to flow in accordance with the internal pressure of the lighting fixture 1.

  The annular groove 10 is a groove for accommodating the packing 40, and ensures waterproofness in the lighting fixture 1.

  In the housing portion 3 of the housing 2, a sensor packing 12, a sensor cover 13, a light shielding cylinder 14, and an optical sensor 25 are housed.

  Here, each structure of the sensor packing 12, the sensor cover 13, the light shielding cylinder 14, and the optical sensor 25 will be described with reference to FIGS. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1 illustrating the lighting apparatus according to the embodiment. In FIG. 4, attention is paid to the vicinity of the optical sensor 25 extending from the daylighting hole 7 to the substrate 21 in the height direction of the housing 2.

  The optical sensor 25 is an illuminance sensor that detects light and dark surrounding the lighting fixture 1 and turns on and off the light source 20. The optical sensor 25 is connected to the lighting device 27. The lighting device 27 controls the light source 20 to be turned on when the illuminance detected by the optical sensor 25 is equal to or lower than a predetermined value, and to turn off the light source 20 when the detected illuminance exceeds a predetermined value.

  The sensor packing 12 is an annular seal member for filling a gap between the daylighting hole 7 and the sensor cover 13. The sensor cover 13 is disposed in the daylighting hole 7, takes in the light incident from the daylighting hole 7 into the housing portion 3, and prevents foreign matter such as rainwater and dust from entering the housing portion 3. It is a bottom cylindrical translucent member.

  The light shielding cylinder 14 is a cylindrical member made of an opaque material. The light shielding cylinder 14 is inserted and disposed on the one end 13 a side of the sensor cover 13 so as to cover the outer periphery of the sensor cover 13 on the one end 13 a side. The light shielding cylinder 14 and the sensor cover 13 may be in contact with each other or may be slightly separated. Thereby, the amount of light collected from the sensor cover 13 can be transmitted to the optical sensor 25 on the substrate 21 as it is.

  Further, the light shielding cylinder 14 includes a return portion 14b that protrudes inward from the end portion 14a side facing the first main surface 21a of the substrate 21. The light shielding cylinder 14 is disposed so that the return portion 14 b contacts the side surface 26 b of the spacer 26 while covering the periphery of the optical sensor 25 so as to accommodate the optical sensor 25.

  Thus, by arranging the sensor cover 13, the light shielding cylinder 14, and the optical sensor 25, it is possible to reliably guide the light incident from the daylighting hole 7 to the optical sensor 25. Further, light other than the light incident from the daylighting hole 7, that is, light that wraps around from the outer peripheral side of the light shielding cylinder 14 and between the light shielding cylinder 14 and the substrate 21 can be more reliably blocked. For this reason, the light and dark detection precision of the surroundings of the lighting fixture 1 by the optical sensor 25 improves. Note that the optical sensor 25 may be mounted on the substrate 21, and the substrate 21 may not have the spacer 26.

  The lighting fixture 1 will be further described. The light source 20 includes a substrate 21 and a plurality of light emitting elements 22 and a lighting device 27 mounted on the second main surface 21 b of the substrate 21. The substrate 21 is a flat plate having insulating properties such as glass epoxy resin, for example, and a locking hole 24 for locking the lens member 30 is provided at an edge in the width direction of the substrate 21 facing the lens member 30. .

  Further, the first main surface 21a and the second main surface 21b of the substrate 21 are respectively provided with wiring patterns made of a conductive material such as copper foil, and a resist layer is appropriately applied. . The material of the substrate 21 may be a ceramic material or a synthetic resin material when an insulating material is used. The material of the substrate 21 may be made of metal. In such a case, it is preferable to use a material having good heat conductivity and excellent heat dissipation, such as aluminum. The surface of the substrate 21 may be painted white with high light reflectance.

  The light emitting elements 22 are connected to each other by a wiring pattern on the substrate 21 and are connected to a lighting device 27. A direct current output is supplied from the lighting device 27, and lighting control is performed by the lighting device 27. A plurality of light emitting elements 22 are arranged along the length direction and the width direction of the substrate 21. The light emitting element 22 includes, for example, an LED chip disposed in a main body formed of ceramics, and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip.

  The LED chip is, for example, 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 LED chip may emit red light or green light, for example.

  Moreover, LED may be made to mount an LED chip directly on the board | substrate 21, and you may make it mount a bullet-type LED, and a mounting system and a format are not specifically limited.

  The lighting device 27 is connected to a commercial AC power supply, is configured to receive the commercial AC power supply, generate a DC output, and control lighting and extinction of the light emitting element 22. The lighting device 27 has a plurality of circuit components 28 mounted on the substrate 21. The circuit component 28 has a first main surface 21a different from the second main surface 21b on which the light emitting element 22 is mounted, and is relatively mounted on one end side in the length direction of the housing 2 having the attachment portion 6. It is an electronic component with a large volume. By arranging one substrate 21 so as to cover the housing part 3 of the housing 2 in this way, a relatively large circuit component 28 is accommodated in the housing part 3 that is a space in the housing 2. Become. As described above, the light emitting element 22 is provided on the second main surface 21b on one end side of the substrate 21 and the circuit component 28 is provided on the first main surface 21a on the other end side. 22 and the circuit component 28 can be efficiently mounted, and the number of components can be reduced.

  Next, the lens member 30 will be described with reference to FIGS. 2, 3, and 5. FIG. 5 is a perspective view showing an arrangement example of lens members. The lens member 30 integrally includes a plurality of concave portions 32 corresponding to the pair of bulging portions 35. The recesses 32 are arranged so as to face the light emitting elements 22 mounted on the second main surface 21b of the substrate 21, respectively. The recesses 32 are respectively provided on the first surface 31 side so as to face the corresponding light emitting elements 22 and accommodate the light emitting elements 22. The recess 32 has a substantially elliptical shape in plan view, and is provided so that the length direction is along the length direction of the substrate 21.

  The bulging portion 35 is provided on the second surface 34 side opposite to the first surface 31 of the lens member 30, and the plurality of bulging portions 35 cooperate to provide the photo-alignment property of the lens member 30. Stipulate. The lens member 30 controls the light distribution in the width direction of the road and the length direction of the road, for example. In particular, it is necessary to irradiate a relatively large amount of irradiation light in the length direction of the road. Therefore, the lens member 30 has a pair of bulging portions 35 that are longer in the width direction than the length direction of the housing 2, and the bulging portions 35 serve as emission surfaces in the width direction, so that the light can be transmitted along the length of the road. Irradiating in the direction. On the other hand, the lens member 30 facing the light emitting element 22 is formed with a recess 32 extending in the length direction of the substrate 21. Thereby, the light emitted from the light emitting element 22 can be efficiently incident on the incident surface of the concave portion 32 in the length direction of the substrate 21 and can be irradiated from the bulging portion 35 which is a pair of emission surfaces. In addition, the shape of the bulging part 35 is not restricted to what was shown in figure, For example, it can change suitably so that much light can be irradiated to desired directions, such as the length direction of a road.

  The lens member 30 has a flat portion 36 that connects the plurality of bulging portions 35. The flat part 36 is disposed so as to come into contact with the second main surface 21b which is the mounting surface of the light emitting element 22 of the substrate 21. A pair of locking portions 33 are provided at both ends in the direction along the width direction of the substrate 21 from the flat portion 36. The locking portion 33 protrudes toward the substrate 21 and is provided so as to be inserted into the locking hole 24 provided in the substrate 21. The pair of locking portions 33 have locking claws 33 a that extend along the length direction of the substrate 21.

  The lens member 30 is locked by sliding the lens member 30 in the length direction of the substrate 21. Specifically, after the locking portion 33 is inserted into the locking hole 24 and the flat portion 36 of the lens member 30 and the second main surface 21b of the substrate 21 are brought into contact with or close to each other, the lens member 30 is shown in FIG. The lens member 30 is locked to the substrate 21 by sliding in the direction of the arrow 38. Since the lens member 30 is slid and locked in this manner, the distance between the light emitting element 22 and the concave portion 32 of the lens member 30 can be made closer, so that the light emitted from the light emitting element 22 is transmitted through the lens member 30. Therefore, the light distribution can be controlled efficiently. Further, for example, the number of parts can be reduced as compared with the case where the lens member 30 and the substrate 21 are fixed by screwing. In addition, in order to fix the lens member 30 and the board | substrate 21 more reliably, you may use together screwing.

  The concave portion 32 extends in the sliding direction so as to face the light emitting element 22 before and after the lens member 30 slides. For this reason, the interference between the light emitting element 22 and the recess 32 can be avoided before and after the lens member 30 and the substrate 21 are locked.

  In addition, although the recessed part 32 was provided so that the length direction of the recessed part 32 may be along the length direction of the board | substrate 21, it is not restricted to this, For example, when it wants to irradiate much light in the width direction of a road For example, when a pair of the bulging portions 35 of the lens member 30 are formed in the length direction, the length direction may be provided along the width direction of the substrate 21. Moreover, although the sliding direction of the lens member 30 to be locked to the substrate 21 has been described as the direction of the arrow 38, the present invention is not limited to this. For example, the position of the locking claw 33 a may be changed so that the lens member 30 is locked to the substrate 21 by sliding the lens member 30 in the direction opposite to the arrow 38.

  Further, the arrangement and shape of the locking portions 33 and the locking holes 24 may be changed so that the sliding direction of the lens member 30 is along the width direction of the substrate 21. Further, the substrate 21 may have a locking portion 33 and the lens member 30 may have a locking hole 24.

  The packing 40 is, for example, silicone rubber, and is accommodated in the annular groove 10 to ensure waterproofness between the housing 2 and the globe 50.

  The globe 50 has a bottom surface 51, a peripheral wall 52, an annular convex portion 53, and a partition portion 54. The globe 50 is made of a translucent material such as acrylic or polycarbonate. The globe 50 has a function of diffusing light emitted from the lens member 30 by being subjected to frost processing. It should be noted that a diffusing material may be appropriately mixed in the globe 50 to provide light diffusibility.

  The bottom surface 51 of the globe 50 is formed so as to have a relatively high inner space from the surface of the substrate 21 of the light source 20, so that light whose light distribution is controlled by the lens member 30 can be efficiently irradiated to the irradiation side.

  The globe 50 is disposed so as to press the packing 40 with the annular convex portion 53, and ensures waterproofing between the housing 2 and the globe 50. Moreover, the part where the adjacent bottom face 51 and the surrounding wall 52 cross | intersect is each chamfered by the curvature radius of a predetermined magnitude | size, or is rounded. For this reason, compared with the case where the adjacent bottom face 51 and the surrounding wall 52 have a ridgeline in the part which cross | intersects, the light by which the light distribution control was carried out by the lens member 30 can be radiate | emitted efficiently in the width direction of a road.

  The partition part 54 is arrange | positioned in the intermediate part of the length direction so that it may extend in the width direction, and improves the mechanical strength of the globe 50. In addition, by bringing the partition portion 54 into contact with the substrate 21, it is possible to suppress distortion and deformation of the substrate 21 that has become high temperature during lighting. The substrate 21 is disposed in contact with the inner wall 5 in the length direction and the inner wall 4 in the width direction which are formed to protrude from the bottom surface 2 b of the housing 2. Since the substrate 21 can be pressed against the inner walls 4 and 5 by the partition portion 54, the plurality of inner walls 4 and 5 serve as heat radiating fins, and are directed from the substrate 21 toward the inner walls 4 and 5. It becomes possible to conduct heat efficiently. In addition, the globe 50 does not need to have the partition part 54.

  In the above-described embodiment, the light emitting element 22 is described as being turned on and off based on the light and dark detected by the optical sensor 25. However, the present invention is not limited to this, and the light emitting element 22 is turned on and off based on the light or dark detected by the optical sensor 25. One of the light extinctions may be executed. In such a case, the lighting device 27 can execute the other of turning on and off the light emitting element 22 at a predetermined time, for example.

  The lens member 30 included in the lighting fixture 1 according to the embodiment has a plurality of concave portions 32 that face the plurality of light emitting elements 22, and is locked to the substrate 21 by sliding. The concave portion 32 is a slide of the lens member 30. It extends so as to face the light emitting element 22 in front and rear. This facilitates the management of the positional relationship between the lens member 30 and the light emitting element 22 mounted on the substrate 21 and reduces the number of components compared to the case where the lens member 30 and the substrate 21 are fixed with screws. can do.

  Moreover, the housing | casing 2 with which the lighting fixture 1 which concerns on embodiment has the lighting hole 7 connected with the accommodating part 3, detects the brightness of the circumference, the optical sensor 25 mounted in the board | substrate 21, and the lighting hole 7 The light-shielding cylinder 14 which accommodates the optical sensor 25 while covering the outer periphery of the end 13a side of the sensor cover 13 which is the cylinder shape arrange | positioned in the inside. Thereby, the light and dark detection accuracy by the optical sensor 25 is improved.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Case 3 Housing | casing part 6 Attachment part 20 Light source 21 Board | substrate 22 Light emitting element 30 Lens member 32 Recessed part 50 Globe

Claims (2)

A housing having a receiving portion;
A light source having a substrate disposed so as to cover the housing portion, and a plurality of light emitting elements mounted on the substrate;
A lens member having a plurality of recesses facing each of the plurality of light emitting elements and being locked to the substrate by sliding;
Comprising
The luminaire is characterized in that the concave portion extends to face the light emitting element before and after sliding of the lens member. The housing has a daylighting hole communicating with the housing portion,
An optical sensor that detects ambient light and darkness and is mounted on the substrate;
A cylindrical light-shielding cylinder that covers the outer periphery of the one end side of the cylindrical and translucent sensor cover disposed in the daylighting hole;
The lighting fixture according to claim 1, comprising:

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