JP7422808B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting fixture equipped with a lens unit.

2. Description of the Related Art Conventionally, some lighting devices that use LEDs (light-emitting diodes) as light sources control the light distribution of the LEDs using a light distribution control member such as a lens. For example, a lighting fixture has been proposed that includes a board on which an LED is mounted, a heat dissipation member to which the board is attached, and a light distribution control member for controlling the light distribution of the LED (see Patent Document 1). . In this lighting fixture, the light distribution control member is attached to the heat radiating member with screws.

Japanese Patent Application Publication No. 2013-243033

The lighting fixture of Patent Document 1 includes a cover that covers the light distribution control member. If the cover of the lighting fixture is disposed close to the light distribution control member, there is a risk that the electric wires of the board or the member that holds the electric wires will sink into the cover, resulting in uneven light on the cover.

The present invention is intended to solve the above-mentioned problems, and provides a lighting fixture that suppresses the occurrence of light unevenness on the cover.

A lighting device according to the present invention includes: a light emitting portion; a substrate portion having the light emitting portion disposed on one side; a base disposed on the other side of the substrate portion; a plate portion facing the light emitting portion and protruding from the plate portion. A lens provided so as to be attached to the base plate, a protruding part provided to protrude from the plate part to the base plate part, a leg part formed to surround the outer periphery of the base part, and an opening formed in the plate part. a lens unit that covers the substrate; and a fixing member that is inserted into the opening of the lens fixing portion and fixes the lens unit and the base with the substrate in between; In the state where the lens unit is fixed to the base, the protruding portion and the leg portion are in contact with each other, and the substrate portion and the lens fixing portion are not in contact with each other .

In the lighting device of the present invention, the plate portion has a bulge portion that bulges from the surface opposite to the side where the lens is arranged toward the cover side at a position facing the through hole, and the electric wire has a bulge portion that bulges out from the surface opposite to the side where the lens is arranged It is located within the department. The bulge accommodates and covers the electric wire, so that the electric wire is not placed on the lens, and the electric wire is hidden so that it does not appear as a shadow on the cover and cannot be seen through. There is. As a result, the lighting fixture can suppress uneven light from occurring on the cover.

1 is a perspective view of a lighting fixture in Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the lighting fixture according to Embodiment 1 of the present invention with the cover and lens unit removed. FIG. 1 is an exploded perspective view of the lighting fixture according to Embodiment 1 of the present invention, with main components removed. 1 is a plan view of a lens unit of a lighting fixture in Embodiment 1 of the present invention. FIG. 5 is a schematic side view of the lens unit of FIG. 4. FIG. FIG. 5 is an exploded vertical partial cross-sectional view of the lens unit of FIG. 4; FIG. 5 is an assembled vertical partial cross-sectional view of the lens unit of FIG. 4; 5 is a cross-sectional view of the light emitting substrate, the bush, the lens unit, and the heat sink taken along line AA of the lens unit shown in FIG. 4. FIG.

Hereinafter, a lighting fixture 1 according to an embodiment of the present invention will be described with reference to the drawings. Note that in the following drawings including FIG. 1, the relative dimensional relationships, shapes, etc. of each component may differ from the actual ones. In addition, in the following drawings, parts with the same reference numerals are the same or equivalent, and this is common throughout the entire specification. Further, to facilitate understanding, terms expressing directions or positions (for example, "upper", "lower", "right", "left", "front", "rear", etc.) are used as appropriate. However, these notations are only described as such for convenience of explanation, and do not limit the arrangement or orientation of the device or parts. In each figure described below, the Z axis indicates the up-down direction, the X-axis indicates the left-right direction, that is, the lateral direction, and the Y-axis indicates the front-back direction, that is, the depth direction. The X-axis, Y-axis, and Z-axis are perpendicular to each other, and the X-axis and Y-axis are horizontal, and the Z-axis is vertical.

Embodiment 1.
FIG. 1 is a perspective view of a lighting fixture 1 in Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the lighting fixture 1 according to the first embodiment of the present invention with the cover 90 and lens unit 80 removed. FIG. 3 is an exploded perspective view of the lighting fixture 1 according to Embodiment 1 of the present invention, with main components removed. First, the overall configuration of a lighting fixture 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 3.

[Lighting equipment 1]
The lighting fixture 1 is a lighting device used in a space with a high ceiling such as a gymnasium, but it may also be a lighting device used in a downlight or a system ceiling. The lighting fixture 1 includes an arm 10, a top plate 20, a power supply device 30, a support frame 40, a heat sink 50, and a fall prevention wire 60, as shown in FIG. The lighting fixture 1 also includes a light emitting board 70, a lens unit 80, and a cover 90, as shown in FIGS. 2 and 3. Furthermore, the lighting fixture 1 includes an electric wire 32 that connects the power supply device 30 and the light emitting board 70, a cable bush 74 that fixes the electric wire 32 to the light emitting board 70, and a fixing device that fixes the light emitting board 70 and the lens unit 80 to the heat sink 50. member 87.

(Arm 10)
The arm 10 is used to attach the lighting fixture 1 to a ceiling or a beam. The arm 10 has an inverted U-shape, extends in the left-right direction (X-axis direction) of the lighting fixture 1, and has a fixed surface portion 11 that comes into contact with an attached part such as a ceiling, and a fixed surface portion 11 that extends from both ends of the fixed surface portion 11. It has a support part 12 extending in the direction. A fixing hole 11a is formed in the fixing surface portion 11, into which a fixing tool such as a hanging bolt is inserted. The support portion 12 is attached to the center in the front-rear direction (Y-axis direction) on both sides of the lighting fixture 1 in the left-right direction (X-axis direction). As shown in FIGS. 1 and 3, a shaft hole 12b and an arcuate hole 12c are formed at the top and bottom of the distal end 12a of the support portion 12. As shown in FIGS. The support portion 12 slidably supports the column framework 40 using fixing devices such as bolts inserted through the shaft hole 12b and the arcuate hole 12c.

(Top plate 20)
As shown in FIG. 3, the top plate 20 includes a plate-shaped main plate part 21 and an upright part 22 that protrudes downward (in the Z-axis direction) from the side of the main plate part 21. The top plate 20 suppresses the accumulation of dust and the like on the heat sink 50. The top plate 20 is fixed to the upper end of the support frame 40. The top plate 20 is installed at a distance from the heat sink 50 so that heat can be sufficiently radiated from the heat sink 50. Although the top plate 20 is made of a metal material, the material forming the top plate 20 may be other materials such as a resin material, and is not limited to a metal material.

The main plate portion 21 is formed into a flat plate shape, and is formed into a rectangular shape when viewed from the side of the fixed surface portion 11 of the arm 10. As shown in FIG. 3, the main plate portion 21 of the top plate 20 is formed with a top plate power hole 21a through which the electric wire 32 from the power supply device 30 is inserted. The top plate 20 has a power supply device 30 mounted on the center portion of the upper surface of the main plate portion 21, and the power supply device 30 is fixed to the main plate portion 21. The rising portion 22 is a plate that hangs down from the outer peripheral end of the main plate portion 21 in a skirt shape. The rising portion 22 is provided to reinforce the strength of the top plate 20. The upright portion 22 is bent at a right angle along the corner of the top plate 20 and covers the lower part of the corner of the top plate 20. The upright portion 22 covers the outer surface of the upper end of the column framework 40.

(Power supply device 30)
As shown in FIGS. 2 and 3, the power supply device 30 includes a box-shaped case 31 and a power supply circuit (not shown) built into the case 31. The power supply device 30 converts power supplied from a commercial power source using a built-in power supply circuit, and supplies power to the light emitting board 70 . As shown in FIG. 3, the power supply device 30 is connected to an electric wire 32, and supplies power to the light emitting board 70 via this electric wire 32. Although the case 31 is made of a box-shaped metal material, the material forming the case 31 may be other materials such as a resin material, and is not limited to a metal material. Further, although the case 31 is formed in a rectangular box shape in FIGS. 1 to 3, it may be formed in other shapes such as a columnar shape.

(Strut framework 40)
As shown in FIGS. 2 and 3, the strut framework 40 has two H-shaped struts 41 that are formed into an H shape when viewed from the side in the front-rear direction (Y-axis direction) of the lighting fixture 1. The H-shaped struts 41 are arranged at both ends of the lighting fixture 1 in the front-rear direction (Y-axis direction). The support frame 40 also includes an intermediate support 42 disposed between two opposing H-shaped support supports 41 . The intermediate support 42 is a rectangular plate extending in the vertical direction (Z-axis direction). The intermediate support 42 is arranged at the center of the lighting fixture 1 in the front-rear direction (Y-axis direction), and one each is arranged at both left and right ends of the lighting fixture 1 in the left-right direction (X-axis direction). There is. The arm 10 is attached to the intermediate support 42. The intermediate support 42 and the arm 10 are slidably fixed to each other by a fixture inserted through a shaft hole 12b and an arcuate hole 12c formed in the arm 10. Furthermore, as shown in FIG. 3, a cover holding portion 42a for holding a cover 90 is provided at the lower end of the intermediate support 42. As shown in FIG. Furthermore, a top plate holding portion 42b that is held by the main plate portion 21 of the top plate 20 is provided at the upper end portion of the intermediate support 42. The upper surface of the strut framework 40 is covered with a top plate 20, and the lower surface of the strut framework 40 is covered with a cover 90. A heat sink 50 is housed in a space surrounded by the support frame 40. Although the support frame 40 is made of a metal material, the material forming the support support frame 40 may be other materials such as a resin material, and is not limited to a metal material.

(Heat sink 50)
As shown in FIGS. 2 and 3, the heat sink 50 includes a plurality of heat radiation fins 51 and a base 52 to which the plurality of heat radiation fins 51 are attached. A light emitting board 70 is attached to the surface of the base 52 opposite to the surface on which the radiation fins 51 are provided. The base 52 is formed with a base fixing hole 52a for fixing the light emitting board 70, and a base power hole 52b through which the electric wire 32 for supplying electricity from the power supply device 30 to the light emitting board 70 is inserted. This heat sink 50 is made of a metal material. The upper part of the heat sink 50 is covered with a top plate 20.

(Fall prevention wire 60)
The fall prevention wire 60 prevents the lighting fixture 1 from falling. As shown in FIGS. 1 to 3, the fall prevention wire 60 includes a string-like wire 61 and a mounting portion 62 that is fixed to an attached portion. One end of the wire 61 is connected to the intermediate support 42 , and the other end of the wire 61 is connected to the attachment part 62 .

(Light emitting board 70)
The light emitting board 70 is arranged between the lens unit 80 and the heat sink 50, as shown in FIGS. 2 and 3. More specifically, the light emitting substrate 70 is arranged between the lens 82 of the lens unit 80 and the base 52 of the heat sink 50. The light emitting board 70 includes a plurality of light emitting sections 71, a substrate section 72 on which the plurality of light emitting sections 71 are arranged, and a connector 73 to which the electric wire 32 is connected. The light emitting unit 71 is, for example, an LED (light-emitting diode), and is a light emitting element of an SMD (Surface Mount Device) package including a lens. The SMD package equipped with a lens can emit light similar to a point light source, and the light distribution can be easily controlled by the lens unit 80. The entire upper surface of the substrate section 72 is in surface contact with the lower surface of the heat sink 50. A plurality of light emitting parts 71 and a connector 73 are arranged on the lower surface of the board part 72. The substrate section 72 is formed with one or more fixing holes 72a for fixing the substrate section 72 to the heat sink 50 and at least one through hole 72b through which the electric wire 32 is inserted. The opening diameter of the fixing hole 72a is larger than the diameter of a first fixing part 87a of a fixing member 87, which will be described later, and smaller than the diameter of a second fixing part 87b. The connector 73 is mounted near the through hole 72b.

(Lens unit 80)
FIG. 4 is a plan view of the lens unit 80 of the lighting fixture 1 in Embodiment 1 of the present invention. FIG. 5 is a schematic side view of the lens unit 80 of FIG. 4. The lens unit 80 will be explained using FIGS. 2 to 5. The lens unit 80 controls the distribution of light emitted from the light emitting section 71 of the light emitting board 70. The lens unit 80 is attached so as to cover the light emitting substrate 70 fixed to the base 52 of the heat sink 50, as shown in FIGS. 2 and 3. The lens unit 80 is made of a light-transmitting material such as resin or glass. Further, the lens unit 80 may be molded from a material containing a diffusing material inside. As shown in FIGS. 4 and 5, the lens unit 80 includes a plate-like plate portion 81, a plurality of lenses 82 that face the light emitting portion 71 and protrude from the plate portion 81, and the lens unit 80 is fixed to the heat sink 50. It has a lens fixing part 83 for. The lens unit 80 also includes a protruding part 84 that protrudes from between the plurality of lenses 82 on the plate part 81, leg parts 85 that protrude from the four corners of the plate part 81 in the same direction as the lenses 82, and It includes a lens 82 and a bulging portion 86 that bulges in the opposite direction.

The plate portion 81 is formed to have approximately the same size as the substrate portion 72 of the light emitting substrate 70 in plan view. The plate portion 81 has a lens fixing portion 83 to which a fixing member 87 is fixed. The plate part 81 is provided with a plurality of lenses 82 corresponding to each light emitting part 71 provided on the light emitting board 70, a lens fixing part 83 is provided so as to correspond to the fixing hole 72a, and a lens fixing part 83 is provided in the through hole 72b. Bulging portions 86 are provided to face each other.

FIG. 6 is an exploded vertical partial cross-sectional view of the lens unit 80 of FIG. FIG. 7 is an assembled vertical partial cross-sectional view of the lens unit 80 of FIG. 4. As shown in FIG. The lens 82 controls the direction of the light emitted from the light emitting section 71 so that it travels in a predetermined direction. Further, the optical characteristics of the lens 82 are formed so that light distribution can be controlled when the lens 82 is attached to an attached part such as a ceiling. The lens 82 protrudes from the plate portion 81 toward the light emitting substrate 70 side. The shape of the lens 82 is that of a truncated cone, and the slope forming the outer peripheral wall of the truncated cone forms a gentle arc between the virtual upper and lower base parts in a cross section perpendicular to the plate part 81. It is formed to depict. The lens 82 has a concave portion 82a, which is a non-through hole, formed at a distal end portion 82b1 in the protruding direction of the lens 82. As shown in FIG. 4, the lens 82 is formed in a circular shape in a plan view when viewed from the light emitting substrate 70 side, and a recess 82a is formed in the center portion of the lens 82. As shown in FIGS. 6 and 7, the recessed portion 82a is formed to be recessed between the tip portion 82b1 on the light emitting substrate 70 side and the base portion 82b2 on the plate portion 81 side in the vertical cross section of the lens 82. There is. The lens 82 has a concave portion 82a, a tip portion 82b1 is open, and a bottom surface portion 82c of the concave portion 82a is formed in a flat shape. Further, as shown in FIG. 6, the inner peripheral side wall of the lens 82 constituting the concave portion 82a is formed of two slopes having different angles with respect to the central axis C extending perpendicularly to the plate portion 81. There is. The first light incident surface 82a1 that constitutes the inner peripheral side wall of the lens 82 is a side wall that is formed from the tip end 82b1 of the lens 82 to the middle part 82b3. Further, the second light incident surface 82a2 that constitutes the inner peripheral side wall of the lens 82 is a side wall formed from the intermediate portion 82b3 to the base portion 82b2. The upper end of the first light incident surface 82a1 is the opening end of the lens 82, and the lower end of the first light incident surface 82a1 is continuous with the upper end of the second light incident surface 82a2. The lower end portion of the second light incident surface 82a2 is continuous with the bottom surface portion 82c of the recessed portion 82a. In the cross-sectional shape perpendicular to the lens 82, the angle of the light incident surface with respect to the central axis C of the lens 82 is such that the angle θ2 of the second light incident surface 82a2 is greater than the angle θ1 of the first light incident surface 82a1. small. Therefore, the first light incident surface 82a1 on the side of the tip portion 82b1 forms a slope having a gentler angle with respect to the plate portion 81 than the second light incident surface 82a2 on the side of the base portion 82b2. That is, in the recessed portion 82a, the diameter of the opening becomes smaller from the tip portion 82b1 to the middle portion 82b3, and the diameter of the opening becomes smaller from the middle portion 82b3 to the base portion 82b2. The recess 82a forms two annular light incident surfaces with different slopes, and the diameter of the opening decreases from the tip 82b1 to the middle part 82b3, and the diameter of the opening decreases from the middle part 82b3 to the base 82b2. is larger than the rate at which it decreases. Note that the intermediate portion 82b3 is a substantially central portion between the tip portion 82b1 and the base portion 82b2 in the vertical direction (Z-axis direction) of the lighting fixture 1. As shown in FIG. 7, when the light emitting substrate 70 and the lens unit 80 are combined, the light emitting part 71 is arranged in the recess 82a of the lens 82. The lens 82 is arranged so that the first light incident surface 82a1 and the second light incident surface 82a2 do not interfere with the light emitting part 71 when the lens unit 80 and the light emitting board 70 are attached to the heat sink 50 by the fixing member 87. . Note that although the lens unit 80 has a plurality of adjacent lenses 82, the number of lenses 82 may be only one.

The lens fixing portion 83 has a first cylindrical hole portion 83b1 in which an opening is formed on the surface of the plate portion 81 opposite to the side on which the lens 82 is disposed. Further, the lens fixing part 83 has a cylindrical part 83a that forms a second cylindrical hole part 83b2 that communicates with a first cylindrical hole part 83b1 formed in the plate part 81 and passes through the plate part 81. The cylindrical portion 83a protrudes from the surface of the plate portion 81 on the side where the lens 82 is disposed, and is formed in a cylindrical shape. As shown in FIGS. 6 and 7, the cylindrical portion 83a protrudes perpendicularly to the plate portion 81, and protrudes from the surface of the plate portion 81 in the same direction as the lens 82. The protruding length of the cylindrical portion 83 a in the perpendicular direction relative to the plate portion 81 is greater than the protruding length of the lens 82 in the perpendicular direction relative to the plate portion 81 . The diameter of the opening of the first cylindrical hole 83b1 is larger than the diameter of the opening of the second cylindrical hole 83b2. As shown in FIG. 4, the lens fixing parts 83 are arranged in four rows in the front-rear direction (Y-axis direction) of the plate part 81 in a plan view seen from the light-emitting substrate 70 side. direction) and are arranged in two rows, and are formed at the intersection of each row. Therefore, eight lens fixing parts 83 are formed in the lens unit 80. However, the number of lens fixing parts 83 formed varies depending on the size of the lens unit 80 and the like, and may be seven or less, or nine or more. Similarly, the number of rows in which the lens fixing portions 83 are arranged is not limited to a specific number of rows in the front-rear direction (Y-axis direction) and left-right direction (X-axis direction) of the plate portion 81.

The protruding portion 84 is formed in a cylindrical shape, and as shown in FIG. 6, protrudes in a direction perpendicular to the plate portion 81 and is connected to the lens 82 from the surface of the plate portion 81 on the side where the lens 82 is disposed. protrude in the same direction. The protruding length of the protruding portion 84 in the perpendicular direction relative to the plate portion 81 is greater than the protruding length of the lens 82 in the perpendicular direction relative to the plate portion 81 . Further, the protrusion length of the protruding portion 84 in the perpendicular direction with respect to the plate portion 81 is greater than the protrusion length of the lens fixing portion 83 with respect to the plate portion 81 in the perpendicular direction. Note that it is desirable that the protruding length of the protruding portion 84 in the perpendicular direction to the plate portion 81 be larger than the protruding length of the lens fixing portion 83 in the perpendicular direction to the plate portion 81; It may be less than or equal to the protrusion length in the right angle direction. As shown in FIG. 4, the protruding portions 84 are arranged in plurality along the depth direction (Y-axis direction) in the center portion of the plate portion 81 in the left-right direction (X-axis direction) when viewed from the side of the light-emitting substrate 70. It is provided. Furthermore, the protruding portions 84 are arranged in parallel with the protruding portions 84 arranged in the central portion of the plate portion 81 in the left-right direction (X-axis direction) when viewed from the side of the light-emitting substrate 70. A column is provided. In addition, in FIG. 4, the lens unit 80 is formed with 11 protrusions 84, but the number of protrusions 84 formed varies depending on the size of the lens unit 80, and may be less than 10. Often, there may be 12 or more locations.

The leg portions 85 protrude from the surface of the corner portion of the plate portion 81 on the side where the lens 82 is disposed in the same direction as the protruding direction of the lens 82 . The length of the leg portion 85 protruding from the plate portion 81 in the perpendicular direction is greater than the length of the lens fixing portion 83 protruding from the plate portion 81 in the perpendicular direction. Note that it is desirable that the protrusion length of the leg portion 85 in the perpendicular direction to the plate portion 81 be larger than the protrusion length of the lens fixing portion 83 in the perpendicular direction to the plate portion 81; It may be less than or equal to the protrusion length in the direction. A stepped portion 85a is formed at the end of the leg portion 85. In a state where the lens unit 80 is attached to cover the light emitting substrate 70, the stepped portion 85a is formed so as to surround the outer periphery of the corner of the substrate portion 72.

FIG. 8 is a cross-sectional view of the light emitting board 70, the cable bush 74, the lens unit 80, and the heat sink 50 along the line AA of the lens unit 80 shown in FIG. FIG. 8 shows the lighting fixture 1 in an assembled state, with the light emitting board 70, cable bush 74, and lens unit 80 attached to the heat sink 50, and the electric wire 32 connected to the connector 73. Further, the lens unit 80 is covered with a cover 90. The bulging portion 86 will be explained using FIGS. 2 to 5 and 8. As shown in FIG. 8, the bulging portion 86 is a portion that bulges toward the cover 90 from the surface portion 81d of the plate portion 81 on the opposite side to the side where the lens 82 is disposed. The bulging portion 86 is formed in the plate portion 81 at a position facing the through hole 72b of the substrate portion 72. Further, the bulging portion 86 is formed at a position facing the electric wire 32 and the cable bush 74. The bulging portion 86 is formed in a concave shape with an open surface of the plate portion 81 on the light emitting substrate 70 side. The concave side of this bulging portion 86 is provided so as to face the through hole 72b of the light emitting substrate 70. Further, the side of the bottom surface portion 86b located at the tip of the bulging portion 86 facing the cover 90 is formed into a flat shape. Since the bulging portion 86 bulges out from the plate portion 81 toward the cover 90 side, the distance L1 between the substrate portion 72 of the light emitting substrate 70 and the bottom surface portion 86b of the bulging portion 86 is the same as that of the lens 82. The distance L2 between the substrate section 72 and the plate section 81 is larger than the distance L2 between the substrate section 72 and the plate section 81. As shown in FIG. 8, the electric wire 32 protruding between the light emitting board 70 and the lens unit 80 from the through hole 72b formed in the substrate portion 72 of the light emitting board 70 is arranged within the bulge 86. By housing and covering the electric wire 32, the bulging portion 86 prevents the electric wire 32 from appearing in the cover 90 as a shadow when the electric wire 32 is connected to the connector 73 of the light emitting board 70, and prevents the electric wire 32 from being seen through the cover 90. The existence of the electric wire 32 is hidden so that it does not appear. Note that, in a plan view from the side of the light emitting board 70, the cable bush 74 is arranged within the bulge 86, as shown in FIGS. 4 and 8.

As shown in FIG. 8, the bulging portion 86 has a connecting surface 86c on the cover 90 side between the surface portion 81d of the plate portion 81 and the bottom portion 86b located at the tip of the bulging portion 86, which is formed in a curved shape. There is. Further, as shown in FIG. 8, the bulging portion 86 is located between the surface portion 81d of the plate portion 81 and the bottom portion 86b located at the tip of the bulging portion 86 in a cross-sectional shape perpendicular to the plate portion 81. The located corner portion 86d is formed into an R shape. That is, the bulging portion 86 also has a corner portion 86d located between the surface portion 81d of the plate portion 81 and the bottom portion 86b located at the tip of the bulging portion 86 in the cross-sectional shape perpendicular to the plate portion 81. is chamfered and formed into a curved shape.

The bulging portion 86 is formed in a polygonal shape when viewed from the cover 90 side, and a corner portion 86e where each side forming the outer edge of the bulging portion 86 touches is formed in an R shape. That is, the bulging part 86 is formed in a polygonal shape when viewed from the cover 90 side, and the corner part 86e where each side forming the outer edge of the bulging part 86 touches is formed in a curved shape. There is. Further, the bulging portion 86 is formed in the shape of a polygonal column, and the corner portions 86e and 86d where the respective surfaces are in contact are formed in curved shapes. Note that although the outer edge of the bulging portion 86 is formed in a cross shape in a plan view, the outer edge of the bulging portion 86 may be formed in a circular shape as long as it does not block the light distribution of the lens 82. Alternatively, it may be formed in another polygonal shape such as a rectangle. Further, although the bulging portion 86 has a bottom portion 86b, the bottom portion 86b may be formed small and may be formed in an arc shape in a cross section perpendicular to the plate portion 81.

(Cover 90)
The cover 90 has a box shape with one side open, and is attached to the heat sink 50 so as to cover the light emitting substrate 70 and the lens unit 80, as shown in FIGS. 6 and 7. The cover 90 has a portion where it is directly attached to the heat sink 50 with screws or the like, and a portion where it is attached via the cover holding portion 42a of the intermediate support 42 as a backup. The cover 90 physically protects the lens unit 80 and the light emitting board 70 by covering the lens unit 80 and the light emitting board 70.

(Electric wire 32)
The electric wire 32 supplies power to the light emitting board 70. The electric wire 32 has one end connected to the power supply device 30 and the other end connected to a connector 73 provided on the light emitting board 70. The electric wire 32 is connected between the power supply device 30 and the connector 73 through a top power supply hole 21a formed in the main plate portion 21 of the top plate 20, a base power supply hole 52b formed in the base 52 of the heat sink 50, and a light emitting board. 70 through hole 72b. The electric wire 32 protrudes from a through hole 72b formed in the substrate portion 72 and is disposed between the light emitting substrate 70 and the lens unit 80.

(cable bush 74)
The cable bush 74 fixes the electric wire 32 to the board portion 72 of the light emitting board 70 . The cable bush 74 is inserted through the base power supply hole 52b and the through hole 72b. The electric wire 32 is inserted into the cable bush 74, and the electric wire 32 is arranged so as to pass through the cable bush 74 in the vertical direction. Cable bush 74 is attached so as not to interfere with connector 73.

(Fixing member 87)
The fixing member 87 arranges the light emitting substrate 70 between the lens unit 80 and the heat sink 50 and fixes the lens unit 80 to the base 52 of the heat sink 50. The fixing member 87 is, for example, a screw. As shown in FIG. 6, the fixing member 87 integrally includes a first fixing part 87a, a second fixing part 87b, and a third fixing part 87c. The first fixing part 87a and the second fixing part 87b are formed in a columnar shape. The third fixing portion 87c is a screw head portion, and has a screw head shape such as a pan or a circle, for example. In the fixing member 87, the diameter of the second fixing part 87b is larger than the diameter of the first fixing part 87a, and the diameter of the third fixing part 87c is larger than the diameter of the second fixing part 87b. In the fixing member 87, when the lens unit 80, heat sink 50, and light emitting board 70 are combined and fixed, the first fixing part 87a fits and engages with the base fixing hole 52a. The second fixing portion 87b of the fixing member 87 is disposed within the second cylindrical hole portion 83b2, and the end surface 87b1 contacts the light emitting board 70. Further, the third fixing portion 87c of the fixing member 87 is arranged in the first cylindrical hole portion 83b1, and comes into contact with the bottom surface 83c of the first cylindrical hole portion 83b1. A notch into which a tool such as a screwdriver is inserted is formed in the third fixing portion 87c. Although the fixing member 87 has been described in terms of a shape in which the first fixing part 87a, the second fixing part 87b, and the third fixing part 87c are integrally formed, these may be a combination of separate members. For example, the fixing member 87 may combine a screw that serves as the first fixing part 87a and the third fixing part 87c with a cylindrical part that serves as the second fixing part 87b. Further, the second fixing portion 87b may be provided on the base 52. For example, the edge portion of the base fixing hole 52a may be formed into a cylindrical shape by burring or the like, or a cylindrical member may be welded to the base 52. In these cases, it is sufficient that the length of the processed or welded cylindrical portion is longer than the second cylindrical hole portion 83b2.

When the lens unit 80 and the light emitting board 70 are attached to the heat sink 50 by the fixing member 87, the first fixing portion 87a of the fixing member 87 is screwed into the base fixing hole 52a. By screwing the first fixing part 87a of the fixing member 87 into the base fixing hole 52a, the light emitting board 70 and the lens unit 80 can be easily attached to the heat sink 50. At this time, the light emitting board 70 is pressed toward the base 52 by the end surface 87b1 of the second fixing part 87b. Further, at this time, in the lens unit 80, the protruding portion 84 and the leg portion 85 are in contact with the substrate portion 72, but the lens fixing portion 83 is not in contact with the substrate portion 72.

As described above, in the lighting fixture 1, the plate portion 81 has a bulging portion 86 that bulges out from the surface opposite to the side where the lens 82 is disposed toward the cover 90 at the position facing the through hole 72b. The electric wire 32 is disposed within the bulged portion 86. The bulging portion 86 accommodates and covers the electric wire 32 so that the electric wire 32 is not placed on the lens 82, so that the electric wire 32 does not appear as a shadow on the cover 90 and cannot be seen through the cover 90. The existence of the electric wire 32 is hidden. As a result, the lighting fixture 1 can suppress the occurrence of light unevenness on the cover 90. Further, the light is diffused by the lens 82, and it is possible to suppress the occurrence of shadows and unevenness of the electric wire 32 disposed within the bulging portion 86. Further, the bulging portion 86 bulges out from the plate portion 81 in a direction opposite to the protruding direction of the lens 82, and there is an internal space between the substrate portion 72 of the light emitting substrate 70 and the bottom surface portion 86b of the bulging portion 86. is formed. Therefore, the electric wire 32 arranged in this internal space can be bent while suppressing the load on the electric wire 32.

Further, in the lighting fixture 1, the cable bush 74 is arranged within the bulge 86 when viewed from the side of the light emitting board 70. Since the cable bush 74 is disposed within the bulge 86, the bottom surface 86b of the bulge 86 can be distanced from the cable bush 74, and the cable bush 74 does not cast a shadow or cause unevenness on the cover 90. You can prevent it from appearing. Further, the light is diffused by the lens 82, and it is possible to suppress the occurrence of shadows and unevenness of the cable bush 74 disposed within the bulge portion 86.

Further, in the bulging portion 86, a connecting surface 86c on the cover 90 side between the surface portion 81d of the plate portion 81 and the bottom portion 86b located at the tip of the bulging portion 86 is formed in a curved shape. Therefore, in the lighting fixture 1, the bulge 86 does not block the light distributed from the lens 82 in the direction of the bulge 86. As a result, in the lighting fixture 1, light is diffused by the lens 82, and shadows and unevenness of the electric wire 32 disposed within the bulge 86 can be suppressed.

In addition, the bulging portion 86 has a corner portion 86d located between the surface portion 81d of the plate portion 81 and the bottom portion 86b located at the tip of the bulging portion 86 in a cross-sectional shape perpendicular to the plate portion 81. formed into a shape. Therefore, in the lighting fixture 1, the bulge 86 does not block the light distributed from the lens 82 in the direction of the bulge 86. As a result, in the lighting fixture 1, light is diffused by the lens 82, and shadows and unevenness of the electric wire 32 disposed within the bulge 86 can be suppressed.

Further, the bulging portion 86 is formed in a polygonal shape when viewed from the cover 90 side, and a corner portion 86e where each side forming the outer edge of the bulging portion 86 touches is formed in an R shape. There is. Therefore, in the lighting fixture 1, the bulge 86 does not block the light distributed from the lens 82 in the direction of the bulge 86. As a result, in the lighting fixture 1, light is diffused by the lens 82, and shadows and unevenness of the electric wire 32 disposed within the bulge 86 can be suppressed.

1 Lighting equipment, 10 Arm, 11 Fixed surface part, 11a Fixed hole, 12 Support part, 12a Tip part, 12b Shaft hole, 12c Arc-shaped hole, 20 Top plate, 21 Main plate part, 21a Top plate power hole, 22 Standing part, 30 Power supply device, 31 Case, 32 Electric wire, 40 Support frame, 41 H-type support, 42 Intermediate support, 42a Cover holding part, 42b Top plate holding part, 50 Heat sink, 51 Radiation fin, 52 Base, 52a Base fixing hole, 52b Base Power supply hole, 60 Fall prevention wire, 61 Wire, 62 Mounting part, 70 Light emitting board, 71 Light emitting part, 72 Board part, 72a Fixing hole, 72b Through hole, 73 Connector, 74 Cable bush, 80 Lens unit, 81 Plate part, 81d Surface portion, 82 Lens, 82a Concave portion, 82a1 First light incident surface, 82a2 Second light incident surface, 82b1 Tip portion, 82b2 Base portion, 82b3 Intermediate portion, 82c Bottom portion, 83 Lens fixing portion, 83a Cylindrical portion, 83b1 No. One tube hole, 83b2 Second tube hole, 83c Bottom, 84 Projection, 85 Leg, 85a Step, 86 Swelling, 86b Bottom, 86c Connection surface, 86d Corner, 86e Corner, 87 Fixing member, 87a first fixing part, 87b second fixing part, 87b1 end face, 87c third fixing part, 90 cover.

Claims (2)

Light emitting part;
a substrate part on one side of which the light emitting part is arranged;
a base disposed on the other side of the substrate part;
a plate portion, a lens provided to face the light emitting portion and protrude from the plate portion, a protruding portion provided to protrude from the plate portion to the substrate portion, and an outer peripheral edge of the substrate portion. a lens unit having a leg portion formed to surround the base portion, and a lens fixing portion having an opening formed in the plate portion, the lens unit covering the substrate portion;
a fixing member that is inserted into the opening of the lens fixing part and fixes the lens unit and the base with the substrate part therebetween;
Equipped with
In the lighting fixture, the base plate part is in contact with the protruding part and the leg part when the lens unit is fixed to the base, and the base plate part and the lens fixing part are not in contact with each other . The lighting fixture according to claim 1, wherein the protruding portion is arranged between the leg portion and the lens fixing portion in a plan view of the plate portion.

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