JP2013197081A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of raising its strength while reducing cost of a case.SOLUTION: A lighting fixture includes a case having four plate sections and being in a square cylindrical shape where both ends in the longitudinal direction are opened and being an extrusion molded body made from an one-piece type resin so as to make one of four plate sections set as a light-transmitting section and to make the other set as non light-transmitting sections, wherein a recess is formed on inner walls of two opposed plate sections among four plate sections, a board extended in the longitudinal direction by being inserted into the recess, and light source units having light-emitting elements mounted on the board so as to make light incident to the light-transmitting section.

Description

  Embodiments described herein relate generally to a lighting fixture that uses a light emitting element such as an LED (Light Emitting Diode) as a light source.

  For example, there is a line lighting fixture that is provided near a corner between an indoor wall and a ceiling, and mainly illuminates the wall to provide an indirect lighting effect. Since such a line lighting apparatus is formed in an elongated shape, it is generally constituted by an extruded body such as aluminum. Since such a molded body is a metal, it is sufficient in strength but is required to be cheaper.

JP 2010-118277 A

  Provided is a lighting fixture with increased strength while reducing the cost of a housing.

  The lighting fixture according to the embodiment has four plate portions and has a rectangular tube shape whose both ends in the longitudinal direction are open. One of the four plate portions is a light transmitting portion and the rest is a non-light transmitting portion. An extrudate formed of a resin integrally formed with the housing, in which recesses are formed in two opposing plate portions of the four plate portions, and inserted into the recesses to extend in the longitudinal direction. A light source unit having a substrate and a light emitting element mounted on the substrate so that light is incident on the translucent portion.

  According to the present invention, the casing is made of resin and has a cylindrical shape in which the light transmitting portion and the non-light transmitting portion are integrally formed, and the strength of the casing is strengthened by being bridged by the substrate on which the light emitting element is mounted inside the cylindrical shape. Therefore, it is possible to realize a lighting fixture with increased strength while reducing the cost of the housing.

The external appearance perspective view of the lighting fixture 1 of embodiment. The expanded perspective view corresponding to the AA cross section in FIG. FIG. 3 is a cross-sectional view parallel to the end opening in the lighting fixture 1.

  Hereinafter, embodiments will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same element in each drawing.

  Drawing 1 is an appearance perspective view of lighting fixture 1 of an embodiment.

  The external appearance of the lighting fixture 1 is comprised by the housing | casing 10 and a pair of edge part cover 50, and is formed in the rectangular tube shape as a whole.

  FIG. 2 is an enlarged perspective view corresponding to the AA cross section in FIG. 1. 2, illustration of the end cover 50 shown in FIG. 1 is omitted.

  FIG. 3A corresponds to a cross-sectional view on the nearer side than the reinforcing plate 30 in FIG.

  FIG. 3B corresponds to a cross-sectional view with the reinforcing plate 30 in FIG. 2 removed.

A light source unit 60, a power supply unit 70, and a reinforcing plate 30 are built in a space surrounded by the housing 10, the translucent cover 40, and the pair of end covers 50.
First, the housing 10 will be described.

  FIG. 3 is a cross-sectional view parallel to the end opening of the housing 10.

  The casing 10 has four plate portions (a bottom plate portion 11, a pair of side plate portions 12, 13 and a light transmitting portion 40) provided integrally, and is formed in a rectangular tube shape with both ends in the longitudinal direction opened. ing.

  The end of the opening is preferably cut at a right angle to the cylinder axis. This is because, in mass production, in order to have the same shape regardless of the case, it should be cut at a right angle.

  However, depending on the case, it may be cut diagonally. That is, if the casing is cut obliquely with respect to the cylinder axis, the two continuously produced casings have the same shape if one of them is turned upside down.

  The casing may be a cylinder, an elliptic cylinder, or a polygon other than a square. Moreover, the recessed part which followed the longitudinal direction may be formed in a part of housing | casing. However, if it is not annular, reinforcing means may be required in terms of strength. Any reinforcing means may be used as long as it forms a strong beam inside the casing in addition to a partition plate described later.

  The bottom plate portion 11 and the translucent portion 40 face each other in parallel, and the side plate portion 12 and the side plate portion 13 face each other in parallel. The side plate portions 12 and 13 are perpendicular to the bottom plate portion 11 and the light transmitting portion 40.

  The housing 10 is an extruded body of, for example, a polycarbonate resin material. The housing 10 is made of transparent polycarbonate for the light transmitting portion 40 and polycarbonate colored for the other non-light transmitting portions in white or the like, and is molded so as to be integrated during extrusion molding.

  In this embodiment, the non-light-transmitting portion has an effect of hiding the built-in objects of the casing such as the lighting device and the wiring. In addition, since it may be non-light-transmitting, if the additive for increasing intensity | strength is mixed, the housing | casing with sufficient mechanical strength as a whole can be provided.

  In the first place, when constructing a cylindrical casing, the light transmitting part and the non-light transmitting part are manufactured separately, and compared with the case of assembling by fitting or the like, it is cheaper and the mechanical strength may increase. it can. This is because, in the case of injection-integrated molding, two types of resin materials are prepared at the stage before molding, and can be integrally injected so that the light-transmitting portion and the non-light-transmitting portion are clearly separated at the time of injection. Because. The boundary part may be a mixture of the light transmitting part and the non-light transmitting part, but it is desirable that the boundary part be clearly formed. If the boundary surface can be clearly formed, it is easy to obtain a necessary light projection opening, which is advantageous in lighting design.

  Also, the boundary surface can be silver. That is, the non-light-transmitting portion and the boundary can be made silver by mixing silver powder in the coloring. By doing so, it becomes possible to reflect the light incident on the boundary portion, and the illumination efficiency is improved. The position and shape of the boundary may be formed in a parabolic shape so that the light from the LED can be parallel or condensed and reflected in the direction in which the direct light of the LED is output from the translucent part. It may be formed in a flat shape.

  In this embodiment, since the casing can be integrally formed by injection molding, it is not necessary to use a separate adhesive or the like in order to join the previously manufactured member to the separate body as described above, and the translucent portion and the non-transparent portion are not required. Since the optical part can be bonded at the time of molding by heat and pressure, the structure is strong.

  In the embodiment shown in FIG. 3, for example, a pair of recesses 15 that extend continuously in the longitudinal direction (direction passing through the paper surface in FIG. 3) are formed on the inner surfaces of both ends of the translucent part 40.

Reference numeral 14 denotes a light source unit substrate inserted into the recess 15. The light source unit substrate 14 has an LED substrate 61 to be described later.

  On the inner wall of the bottom plate portion 11, a concave groove 18 is formed that extends continuously in the longitudinal direction (direction passing through the paper surface in FIG. 3). On the lower surface of the light source unit substrate 14, a concave groove 19 extending continuously in the longitudinal direction is formed at a portion facing the groove 18. Two concave grooves 16 and 17 are formed in the inner wall of the side plate portion 12, and the grooves 16 and 17 extend continuously in the longitudinal direction.

  As shown in FIG. 3A, an LED substrate 61 is disposed on the light source unit substrate 14 to constitute a light source unit 60.

  The light source unit 60 includes a light source unit substrate 14, an LED substrate 61, and a light emitting element 62. A wiring 82 is formed on the LED substrate 61, and the light emitting element 62 is mounted on the LED substrate 61 and electrically connected to the wiring 82.

  The light emitting element 62 is, for example, a light emitting diode (LED). For example, when a gallium nitride (GaN) compound semiconductor is used as the material of the active layer of the LED, short wavelength light having a wavelength of 500 nanometers or less can be obtained. However, the material of the active layer is not limited to the gallium nitride compound semiconductor.

  In addition to the LED, the light emitting element 62 is, for example, an organic light emitting diode (OLED), an inorganic electroluminescent light emitting element, an organic electroluminescent light emitting element, or other. An electroluminescent light emitting element or the like can be used.

  In the embodiment, for example, the light-emitting element 62 includes blue light by a combination of an LED that emits blue light and a phosphor layer that includes the phosphor that absorbs the blue light (excitation light) and converts the light into yellow light. As a mixed color of light and yellow light, light such as white or light bulb color is emitted.

  The LED substrate 61 extends on the light source unit substrate 14 in the longitudinal direction of the housing 10, and a plurality of light emitting elements 62 are mounted along the longitudinal direction. A single light source unit substrate 14, a single LED substrate 61, and a plurality of light emitting elements 62 mounted on the LED substrate 61 as a single unit, a plurality of (for example, two in FIG. 4) light source units 60. Are arranged along the longitudinal direction of the housing 10. Note that the number of the light source units 60 incorporated in one housing 10 is not limited to two and is arbitrary.

  The LED substrate 61 is screwed to the light source unit substrate 14, for example. The light emitting element 62 is mounted on the surface of the substrate 61 opposite to the back surface on the top plate portion 14 side.

  On the LED substrate 61, the translucent part 40 is located so that the light source unit 60 may be covered. The light transmissive part 40 transmits light emitted from the light emitting element 62, but may not be transparent and may have light diffusibility.

  The translucent portion 40 includes a main surface portion 42 that faces the light source unit 60 with a space therebetween, and a pair of side surface portions 43 that are integrally provided at right angles to the main surface portion 42. The side surface portion 43 extends in the longitudinal direction and forms a part of the housing 10.

  At the lower end of the side surface portion 43 of the translucent portion 40, there is a boundary by injection molding, the translucency is clearly different before and after the boundary, and other than the translucent portion 40 is a white non-translucent portion. . A recess 15 is formed in the pair of side portions 43, and the light source unit substrate 14 is fixed to the housing 10 by engaging with the recess 15. The light emitting element 62 is present in a space covered with the light transmitting portion 42 of the housing 10.

  A power supply unit 70 is also built in the housing 10 as shown in FIG. The power supply unit 70 includes a wiring board 71 and a circuit component 72 mounted on the wiring board 71.

  The power supply unit 70 is electrically connected to the light source unit 60 through the electrical wiring 82 shown in FIG. 2 that passes through the recess 15, supplies power to the light emitting element 62, and controls the lighting of the light emitting element 62.

  The power supply unit 70 is built in the housing 10 with the wiring board 71 parallel to the side plate portions 12 and 13 of the housing 10. As shown in FIG. 2, the wiring substrate 71 extends in the longitudinal direction of the housing 10. Both ends of the wiring board 71 in the short direction (width direction) are inserted into grooves 18 and 19 formed on the inner wall of the housing 10 as shown in FIG. Thereby, the movement of the power supply unit 70 in the horizontal direction in FIG.

  As shown in FIG. 1, a pair of end cover 50 is provided at both ends in the longitudinal direction of the housing 10. The end cover 50 closes the end opening in the longitudinal direction of the housing 10 and the end opening in the longitudinal direction of the translucent cover 40.

  A reinforcing plate 30 is formed in a substantially square plate shape made of metal or a resin material. A protrusion 33 protruding upward at the upper end, a protrusion 34 protruding downward at the lower end, and two protrusions 31 and 32 are integrally provided at the left end. The positions of the protrusions 33 and 34 coincide with each other in the lateral direction.

  Further, a projecting portion 36 projecting to one surface side is integrally provided at the lower portion of the reinforcing plate 30. The lower surface of the protruding portion 36 is flush with the lower end surface of the reinforcing plate 30. Further, the reinforcing plate 30 is formed with a wiring port 35 as a through hole.

  As shown in FIG. 3A, the reinforcing plate 30 is provided in the housing 10 in a posture parallel to the end opening or the cross section of the housing 10, and the space in the housing 10 is arranged in the longitudinal direction. Partition.

  Of the four edge portions (side portions) of the reinforcing plate 30, for example, three edge portions (side portions) abut against the inner wall of the housing 10 and the light source unit substrate 14. For example, the lower end portion of the reinforcing plate 30 contacts the inner wall of the bottom plate portion 11 of the housing 10, the upper end portion of the reinforcing plate 30 contacts the inner wall of the light source unit substrate 14 of the housing 10, and the right end portion of the reinforcing plate 30 is It is in contact with the inner wall of the side plate portion 13 of the housing 10.

  The protrusion 33 of the reinforcing plate 30 is inserted into the groove 19 formed on the top plate portion 14 of the housing 10, and the protrusion 34 of the reinforcing plate 30 is inserted into the groove 18 formed on the bottom plate portion 11 of the housing 10 to reinforce the reinforcing plate 30. The protrusion 31 of the plate 30 is inserted into the groove 16 formed in the side plate portion 12 of the housing 10, and the protrusion 32 of the reinforcing plate 30 is inserted into the groove 17 formed in the side plate portion 12 of the housing 10. Accordingly, the reinforcing plate 30 is positioned in the vertical direction (vertical direction in FIG. 3A) and in the horizontal direction (horizontal direction in FIG. 3A) in the housing 10.

  Further, the lower surface of the protruding portion 36 protruding in the longitudinal direction of the housing 10 (direction passing through the paper surface in FIG. 3A) contacts the inner wall of the bottom plate portion 11. Thereby, even if a force is applied to the thin reinforcing plate 30 from the outside, the reinforcing plate 30 can be prevented from tilting toward the front side in FIG. 3A, and the stable upright posture of the reinforcing plate 30 can be maintained. . Here, the upright posture of the reinforcing plate 30 refers to a posture in which the reinforcing plate 30 is perpendicular to the four inner wall surfaces of the housing 10 and parallel to the end opening or the cross section of the housing 10. .

  In addition, as shown in FIG. 2, the power supply unit 70 is arrange | positioned on the surface opposite to the surface in which the protrusion part 36 was provided in the reinforcement board 30. As shown in FIG. The reinforcing plate 30 is in contact with or close to the end in the longitudinal direction of the wiring board 71 of the power supply unit 70. For this reason, the inclination of the reinforcing plate 30 toward the rear side in FIG. 2 is regulated by the power supply unit 70.

  The end of the LED substrate 61 in the light source unit 60 in the longitudinal direction is located near the end opening of the housing 10. The reinforcing plate 30 is provided at a position slightly inward from the end opening of the housing 10, and is provided between the power supply unit 70 and the end opening of the housing 10.

  Accordingly, the power supply unit 70 is shielded by the reinforcing plate 30 when viewed from the end opening of the housing 10. For this reason, the contact with the circuit component 72 including the charging unit in the power supply unit 70 through the end opening of the housing 10 can be prevented, and an electric shock or electrostatic breakdown of the circuit component 72 can be prevented.

  If the thickness of the housing 10 is too thin, the strength is affected. Therefore, according to the present embodiment, the reinforcing plate 30 is provided inside the housing 10 to supplement the strength of the housing 10. In the embodiment, for example, three edges of the reinforcing plate 30 are in contact with the inner wall of the housing 10 and the light source unit substrate 14. Thereby, the intensity | strength of the housing | casing 10 can be raised, implement | achieving low cost with an extrusion molding. Even if it is the thin housing | casing 10, the strength with respect to a twist or pressing force can be provided, and size reduction of the lighting fixture 1 can be achieved.

  All of the four edges of the reinforcing plate 30 may abut against the housing 10 and the light source unit substrate 14. If the edge of the reinforcing plate 30 is brought into contact with the inner walls of at least two opposing plate portions of the four plate portions (the bottom plate portion 11, the light source unit substrate 14, and the side plate portions 12 and 13) in the housing 10, The internal space of the housing 10 can be stably held by suppressing the collapse of the housing 10.

  Further, by giving the reinforcing plate 30 a leaf spring characteristic, the restoring force is used to press the edge of the reinforcing plate 30 against the inner wall of the housing 10 and fix the reinforcing plate 30 to the housing 10. can do.

  The light source unit 60 is electrically connected to the power supply unit 70 by electric wiring 82. An electric wiring (electric cable) 81 is connected to the power supply unit 70. The electrical wiring 81 passes through the wiring port 35 formed in the reinforcing plate 30 and is led out from one surface side of the reinforcing plate 30 to the other surface side. It leads to the end opening.

  The electrical wiring 81 is led out of the housing 10 through a hole or opening (not shown) formed in the end cover 50 and connected to an external power source. In the case of a configuration in which a plurality of lighting fixtures 1 are continuously provided in the longitudinal direction, the electrical wiring 81 led out of the housing 10 is connected to the adjacent lighting fixture 1.

  In addition, the wiring port 35 is not limited to being formed as a through hole in the reinforcing plate 30, and a structure in which the corner of the reinforcing plate 30 is cut out to form a wiring port may be used.

  The wiring position of the electric wiring 81 in the housing 10 is limited by the reinforcing plate 30, and the reinforcing plate 30 also functions as a cable guide. For this reason, the electrical wiring in the instrument can be organized, and assemblability can be improved and noise can be reduced.

  In addition, by fixing the portion of the electrical wiring 81 that passes through the wiring port to the inner wall of the wiring port with a binding band or the like, the electrical wiring 81 is pulled out of the housing 10 so that the connector is not pulled out or disconnected. Can be prevented.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 10 ... Housing | casing, 11 ... Bottom plate part, 12, 13 ... Side plate part, 14 ... Light source unit board | substrate, 15 ... Recessed part, 30 ... Reinforcement plate, 40 ... Translucent part, 50 ... End part cover, 60 ... light source unit, 61 ... LED substrate, 62 ... light emitting element, 70 ... power supply unit, 81 ... electrical wiring

Claims (5)

A casing which is an extruded body made of a resin integrally formed so as to have a cylindrical shape with both ends in the longitudinal direction being opened, a part being a translucent part and the rest being a non-translucent part,
A light source unit including a substrate provided to extend in a longitudinal direction in the housing, and a light emitting element mounted on the substrate so that light is incident on the light transmitting portion;
Lighting equipment with It has a rectangular tube shape with four plate parts and both ends in the longitudinal direction are open. From the resin integrally formed so that one of the four plate parts is a light transmitting part and the rest is a non-light transmitting part. And a casing in which concave portions are formed in two opposing plate portions among the four plate portions,
A light source unit having a substrate inserted in the concave portion and extending in the longitudinal direction; and a light emitting element mounted on the substrate so that light is incident on the light transmitting portion;
A reinforcing plate provided inside the housing and in contact with the inner walls of at least two opposing plates of the four plate portions and the substrate;
Lighting equipment with   The lighting device according to claim 2, wherein the reinforcing plate has a wiring port through which an electrical wiring electrically connected to the light source unit passes from one surface side to the other surface side of the reinforcing plate. A power supply unit provided in the housing and electrically connected to the light source unit;
The said reinforcement board is a lighting fixture as described in any one of Claims 1-3 provided between the said power supply unit and the edge part opening of the said housing | casing.   The board | substrate of the said light source unit is a lighting fixture as described in any one of Claims 1-4 provided on the board part in which the said recessed part was formed.

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