JP6312611B2 - LED lighting device - Google Patents

Description

  The present invention relates to an LED (Light Emitting Diode) illumination device.

  As this type of prior art, for example, there is one disclosed in Patent Document 1. That is, Patent Literature 1 discloses a lighting fixture in which a sheet metal reflecting shade is attached to a sheet metal fixture body with a stopper. A lamp holder having a socket is attached to the fixture body.

Patent No. 4045788

In the luminaire disclosed in Patent Document 1, a reflective shade, a stopper and a latch for fixing the reflective shade to the fixture body are arranged between the fixture body and the lamp holder. Since the fixture main body, the stopper, the reflective shade and the latch are all arranged in the vertical direction (that is, the direction from the ceiling to the floor), there is a problem that the lighting fixture tends to be thick.
Therefore, the present invention has been made in view of such circumstances, and an object of the present invention is to provide an LED lighting device that can be made thin.

  In order to solve the above problems, an LED lighting device according to an aspect of the present invention supports an LED unit, and at least a part of the opposite side of the support surface that supports the LED unit serves as a mounting surface for the mounted portion. An instrument body, and a reflector that is mounted in surface contact with the side surface of the instrument body and reflects light emitted from the LED unit in a preset direction, the reflector plate being in surface contact with the side surface. Of the region to be fixed, the first edge portion close to the mounting surface and the second edge portion far from the mounting surface are fixed at a position closer to the second edge portion than the center portion. And

Moreover, said LED lighting apparatus WHEREIN: The level | step-difference part is formed in the said attachment surface side among the said side surfaces, It is good also considering the said reflecting plate being latched by the said level | step-difference part.
Moreover, said LED illuminating device WHEREIN: The said reflecting plate is pressed and fixed to the said instrument main body side by the fastening member penetrated to the said position, It is good also considering the above-mentioned as a characteristic.
Moreover, said LED illuminating device WHEREIN: The opening part is provided in the said level | step-difference part, It is good also considering the protrusion protruding from the edge of the said reflecting plate being inserted in the said opening part.

Further, in the LED lighting device, a contact portion between the instrument main body and the reflecting plate may be in the same plane on the support surface side of the instrument main body.
In the above LED lighting device, the instrument body has a recess on the side of the support surface,
An LED unit housed in the recess may be further provided.
An LED lighting apparatus according to another aspect of the present invention includes an instrument main body that supports an LED unit, and at least a part of the opposite side of the support surface that supports the LED unit is an attachment surface for an attached portion. A step portion is formed on the side of the mounting surface of the side surface of the main body.
LED lighting device according to still another aspect of the present invention, the LED unit supporting a fixture main body in which at least a portion of the opposite side of the support surface for supporting the LED unit becomes a mounting surface for the mounting portion, the LED A reflecting plate that reflects light emitted from the unit in a set direction, and the reflecting plate is connected to the mounting portion by a mounting portion, a connecting portion connected to the mounting portion, and the connecting portion. A reflection portion, wherein the reflection plate and the instrument main body are provided between a first edge close to the attachment surface and a second edge far from the attachment surface in the attachment portion of the reflection plate. It is characterized by being fixed at a position closer to the second edge portion than the central portion.
Moreover, said LED illuminating device WHEREIN: The side part in alignment with the longitudinal direction of the said attaching part is good also as the L-shape by sectional view so that it may hang over the level | step-difference part of the said instrument main body .
Further, in the above LED lighting device, the instrument body has a recess on the support surface side, and the end of the recess on the opening end surface side of the instrument body side plate constituting the recess is the recess. It may be bent inward and further bent outward from the recess .
In the LED lighting device, an angle formed by the connection portion and the reflection portion may be 100 ° or more and 170 ° or less .

  According to one embodiment of the present invention, it is possible to provide an LED lighting device that can be made thin.

It is a figure which shows the structural example of the LED lighting apparatus 1 which concerns on 1st Embodiment. It is a figure which shows the structural example of the instrument main body. It is a figure which shows the structural example of the instrument main body. It is a figure which shows the structural example of the instrument main body. It is a figure which shows the structural example of the instrument main body. It is a figure which shows the structural example of the connector terminal 42 for power supplies, the terminal block 43 for power supplies, and its periphery part. FIG. 3 is a diagram illustrating a configuration example of a first reflecting plate 5. It is a figure which shows the structural example of the LED unit. It is a figure which shows the structural example of LED board 93. FIG. It is a figure which shows the structural example of the LED lighting apparatus 101 which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that, in each drawing described below, parts having the same configuration are denoted by the same reference numerals, and repeated description thereof is omitted.
<First Embodiment>
(Constitution)
Fig.1 (a)-(c) is a figure which shows the structural example of the LED lighting apparatus 1 which concerns on 1st Embodiment of this invention. Specifically, FIG. 1A is a perspective view of the LED illumination device 1 as viewed from obliquely above, and FIG. 1B is a perspective view of the LED illumination device 1 as viewed from obliquely below. FIG. These are the side views which looked at the LED lighting apparatus 1 from the side.

As shown in FIGS. 1A to 1C, the LED lighting device 1 is, for example, a trough type lighting device, and includes an instrument body 3, a first reflecting plate 5, a second reflecting plate 7, and the like. The LED unit 9 is provided.
The instrument body 3 supports the LED unit 9 and is attached to a portion to be attached (for example, a ceiling, a wiring duct rail, etc.). The instrument body 3 has a recess 36 for accommodating the LED unit 9 on the side of the support surface 3 a that supports the LED unit 9. Moreover, as for the instrument main body 3, the at least one part on the opposite side of the support surface 3a becomes the attachment surface 3b with respect to a to-be-attached part.

  The first reflecting plate 5 is attached in a state of surface contact with the first side surface 3c of the instrument body 3, and reflects light emitted from the LED unit 9 in a preset direction (for example, a direction toward the floor surface). Is. The second reflecting plate 7 is attached in a state of surface contact with the second side surface 3d of the instrument body 3, and reflects the light emitted from the LED unit 9 in a preset direction (for example, a direction toward the floor surface). Is. Together with the first reflecting plate 5 and the second reflecting plate 7, it is also called a reflective shade.

  In the LED unit 9, the light source is an LED, and the opposite side of the attached portion is illuminated with light. This LED unit 9 is detachably accommodated in the recess of the instrument body 3. In addition, when attaching the LED lighting apparatus 1 to the ceiling of a building, in FIG. 1 (a) and (c), the plus direction (for example, upward direction) of Z-axis corresponds to the ceiling side, and the minus direction of Z-axis ( For example, the downward direction) corresponds to the floor side. Hereinafter, each component which comprises the LED lighting apparatus 1 is demonstrated.

(1) Instrument Main Body FIGS. 2A to 5B are diagrams illustrating a configuration example of the instrument main body 3. Specifically, FIGS. 2 (a) and 2 (b) are a perspective view of the instrument body 3 with the reflective shade attached, as viewed from obliquely above, and a partially enlarged view thereof. 3 (a) and 3 (b) are a perspective view of the instrument body 3 with the reflective shade attached, as seen from obliquely below, and a partially enlarged view thereof. 4 (a) and 4 (b) are a perspective view of the instrument body 3 in a state in which the reflective shade is removed, and an enlarged view of a part thereof. 5 (a) and 5 (b) are cross-sectional views of FIG. 2 (a) taken along line X2-X2 ′, and FIG. 5 (b) is an enlarged view of a part of FIG. 5 (a). .

(1.1) Recess on the Support Surface Side As shown in FIGS. 2A to 5B, the instrument body 3 is a first side plate along the longitudinal direction (for example, the Y-axis direction) of the instrument body 3. 31, a second side plate 32 that faces the first side plate 31 along the longitudinal direction, a third side plate 33 that is disposed at one end portion in the longitudinal direction, and a second side plate that is disposed at the other end portion in the longitudinal direction. 4 side plates 34 and a support plate 35 surrounded by first to fourth side plates 31 to 34. And these 1st-4th side plates 31-34 and the support plate 35 comprise the recessed part 36 opened to the side of the support surface 3a which supports an LED unit.

  The first side plate 31 and the second side plate 32 are integrated with the support plate 35. For example, both side portions along the longitudinal direction of the metal plate are bent by a mold to form a first side plate 31 and a second side plate 32. The third side plate 33 and the fourth side plate 34 are formed separately from the first side plate 31, the second side plate 32, and the support plate 35. The first side plate 31, the second side plate 32, the third side plate 33, and the fourth side plate 34 are fastened by fastening parts (rivets, screws, etc.) 37 at the four corners of the instrument body 3. (Or may be welded).

  Further, the support plate 35 of the instrument body 3 has a through hole 351 for passing a bolt, a through hole 352 for drawing an external wiring arranged on the ceiling or the like inside the recess 36, an external wiring or an LED unit. 9 has a notch 353 for supporting the internal wiring (for example, power supply wiring, dimming wiring, etc.) that is located near the bottom surface of the recess 36 (that is, the support surface 3a of the support plate 35), A through hole 354 for hooking the fixing claw portion is provided. One or two or more through holes 351 are provided. One or more through holes 352 are also provided. One or more incisions 353 are also provided.

  For example, when the LED lighting device 1 is attached to the ceiling of a building, a long bolt protruding from the ceiling toward the floor surface is prepared. By passing this long bolt through the through hole 351 of the instrument body 3 and fixing with a nut, the instrument body 3 is fixed to the ceiling. Further, the cut portion 353 is bent inside the concave portion 36 and the wiring is sandwiched between the cut portion 353 and the bottom surface of the concave portion 36, thereby supporting the above-described wiring and the like toward the bottom surface side of the concave portion 36.

(1.2) Convex portion on the mounting surface side As shown in FIGS. 3A and 3B, the appliance body 3 includes a spring metal fitting 37 for mounting the LED unit 9 on the support surface 3a side, And a convex portion 41. The spring fitting 37 is provided on the bottom surface of the recess 36. The convex portion 41 is provided on the surface opposite to the bottom surface of the concave portion 36 (that is, the mounting surface 3b). The spring metal fitting 37 includes a spring 371, a spring support portion 372 that supports the spring 371, and an arm portion 373 that is pressed toward the support surface 3 a by the elastic force of the spring 371. The spring support portion 372 is fixed to the bottom surface of the recess 36 by a fastening member (for example, a rivet, a screw, etc.) 375 and a fixing claw portion 376.

  As shown in FIGS. 2A to 4B, the fastening member 375 fixes the spring support portion 372 from the attachment surface 3 b side of the instrument body 3. A part of the fixing claw portion 376 (that is, a hooking piece) is hooked on an edge portion of the through hole 354 provided in the support plate 35. Therefore, the head of the fastening member 375 and the latching piece of the fixing claw 376 protrude upward from the attachment surface 3 b of the instrument body 3. When the LED lighting device 1 is attached to the attachment portion, the head of the fastening member 375 and the latching piece of the fixing claw portion 376 come into contact with the attachment portion.

  Here, the portion of the LED lighting device 1 that comes into contact with the mounted portion has a poor balance in arrangement only with the head of the fastening member 375 and the hooking piece of the fixing claw portion 376, and the mounted portion of the LED lighting device 1 The mounting state may not be stable. Therefore, one or two or more convex portions 41 are provided on the attachment surface 3b of the instrument body 3. This convex part 41 consists of resin, for example. Further, the height of the convex portion 41 from the mounting surface 3b is the same as the height from the mounting surface 3b of the head of the fastening member 375 and the height from the mounting surface 3b of the latching piece of the fixing claw portion 376. Alternatively, it is set slightly higher (in consideration of the physical properties of the resin that is dented elastically when pressed). Thereby, since the number of the parts which contact a to-be-attached part among LED lighting apparatuses 1 can be increased and arrangement | positioning balance can be taken, it can contribute to stabilization of the attachment state with respect to the to-be-attached part of LED lighting apparatus 1. it can.

  Note that the fastening pieces of the fastening member 375 head and the fixing claw 376 are larger than the connector terminal positioning projection, the fastening member leg, and the ground terminal, which will be described below, and Large contact area. The convex portion 41 is made of resin and has elasticity. For this reason, even if the head part of the fastening member 375, the latching piece of the fixing claw part 376, and the convex part 41 contact the attached part, it is possible to prevent the attached part from being damaged.

(1.3) Recess on the mounting surface side In addition, the appliance body 3 includes a connector terminal for electrically connecting the internal wiring and the external wiring of the LED unit 9 and a terminal block for installing the connector terminal. Have. The connector terminal and the terminal block are provided on the bottom surface of the recess 36.
For example, as shown in FIGS. 3A and 3B, as connector terminals, a power connector terminal 42 that electrically connects the power supply wiring of the LED unit 9 and the external wiring, and the light control of the LED unit 9. And a dimming connector terminal 44 for electrically connecting the external wiring and the external wiring. Further, as the terminal block, there are a power supply terminal block 43 for installing the power connector terminal 42 and a dimming terminal block for installing the dimming connector terminal.

  FIG. 6 is a cross-sectional view illustrating a configuration example of the power connector terminal 42, the power terminal block 43, and the peripheral portion thereof. As shown in FIG. 6, a positioning convex portion 421 and a fastening member (for example, a rivet, a screw, etc.) 45 are passed through the surface of the power connector terminal 42 facing the power terminal block 43. A through hole 422 and a ground terminal 423 are provided. Further, the power terminal block 43 is provided with a through hole 431 through which the positioning convex portion 421 passes, a through hole 432 through which the fastening member 45 passes, and a through hole 433 through which the ground terminal 423 passes. ing.

  The position of the power connector terminal 42 relative to the power terminal block 43 is determined by inserting the positioning convex portion 421 into the through hole 431. Further, by this positioning, the through holes 422 and 432 are communicated (that is, connected) in the vertical direction, and the ground terminal 423 is inserted into the through hole 433. For example, the power connector terminal 42 is fixed to the power terminal block 43 by passing one fastening member 45 through the through holes 422 and 432 from the power connector terminal 42 side.

Further, the opposite side of the power terminal block 43 is recessed with respect to the surrounding mounting surface 3 b, thereby forming a recess 47. The depth of the recess 47 with respect to the mounting surface is D. Further, the positioning convex portion 421, the leg portion of the fastening member 45, and the ground terminal 423 protrude to the opposite side of the power supply terminal block 43. Let L be the maximum value of the protruding length of each of these parts. Here, since D is set to be a value larger than L1 (D> L1), the positioning convex portion 421, the leg portion of the fastening member 45, and the ground terminal 423 are in contact with the attached portion. Can be prevented. Even if the protruding portion 421 for positioning, the leg portion of the fastening member 45, and the portion protruding to the mounting surface side of the ground terminal 423 are sharp, they do not contact the mounted portion, and thus the mounted portion is damaged. Can be prevented.
The configurations of the dimming connector terminal 44 (see FIG. 3) and the dimming terminal block are the same as the configurations of the power connector terminal 42 and the power terminal block 43 shown in FIG. Accordingly, the positioning convex portion, the grounding terminal, and the leg portion of the fastening member that fixes the dimming connector terminal 44 to the dimming terminal block come into contact with the mounted portion. Can be prevented.

(1.4) Stepped portion Further, a stepped portion is provided along the longitudinal direction of the instrument body 3 on the side of the mounting surface (for example, the upper surface) among the side surfaces along the longitudinal direction of the instrument body 3. For example, as shown in FIGS. 5 (a) and 5 (b), the first side surface 3c of the instrument main body 3 (that is, the outer side surface of the first side plate 31) is provided on the side of the mounting surface 3b. A first step portion 311 is provided along the longitudinal direction of the main body 3. The shape (that is, the cross-sectional shape) of the first step portion 311 in a cross-sectional view is an L shape. The L-shaped shape is a shape in which the first line segment and the second line segment are orthogonal to each other. Similarly, on the second side surface 3d of the instrument body 3 (that is, the outer side surface of the second side plate 32) on the attachment surface 3b side, a second step along the longitudinal direction of the instrument body 3 is provided. A part 321 is provided. The cross-sectional shape of the second step portion 321 is also an L shape.

  The first step portion 311 is provided with a through hole 312 that penetrates to the inside of the recess 36. Similarly, the second stepped portion 321 is provided with a through hole 322 that penetrates to the inside of the recess 36. Further, the first side plate 31 is provided with a through hole 313 for passing a fastening member. Similarly, the second side plate 32 is provided with a through hole 323 for passing a fastening member.

(2) Reflector (2.1) First Reflector FIGS. 7A and 7B are diagrams showing a configuration example of the first reflector 5. Specifically, FIG. 7A is a perspective view of the first reflecting plate 5 as viewed obliquely from above, and FIG. 7B is a partially enlarged view thereof.

  As shown in FIGS. 7 (a) and 7 (b), the first reflecting plate 5 includes a mounting portion 51 for mounting on the first side surface 3c of the instrument body 3 by surface contact, and light emitted from the LED unit 9. And a connecting portion 53 that connects the attachment portion 51 and the reflecting portion 52. The attachment portion 51 is located on one side of the connection portion 53, and the reflection portion 52 is located on the other side of the connection portion 53. In addition, a protruding piece 54 protruding outward from the side portion is provided on the side portion of the attachment portion 51.

  Further, as shown in FIGS. 5A and 5B, the attachment portion 51, the connection portion 53, and the reflection portion 52 are integrated, and the connection portion 53 is bent and connected to the attachment portion 51. The reflection part 52 is bent and connected to the connection part 53. For example, the angle θ1 formed by the attachment portion 51 and the connection portion 53 is 90 °. Further, the angle θ2 formed by the connecting portion 53 and the reflecting portion 52 is not less than 100 ° and not more than 170 °. Further, the side portion along the longitudinal direction of the attachment portion 51 has an L shape in a cross-sectional view so that the side portion is hooked on the first step portion 311 of the instrument body 3. Further, the attachment portion 51 is provided with a through hole 55 for passing a fastening member.

(2.2) Second Reflector The second reflector 7 has the same configuration as the first reflector 5. That is, as shown in FIGS. 5A and 5B, the second reflecting plate 7 has a mounting portion 71, a connecting portion 73, and a reflecting portion 72. Further, a protruding piece 74 protruding outward from the side portion is provided on the side portion of the attachment portion 71. The attachment portion 71, the connection portion 73, and the reflection portion 72 are integrated, and the connection portion 73 is bent and connected to the attachment portion 71, and the reflection portion 72 is bent and connected to the connection portion 73. . Further, the side portion along the longitudinal direction of the attachment portion 71 has an L shape in a cross-sectional view so that the side portion is hooked on the first step portion 311 of the instrument body 3. Further, the attachment portion 71 is provided with a through hole 75 for passing a fastening member.

(2.3) Fixing method of reflecting plate The fixing method of the 1st reflecting plate 5 with respect to the instrument main body 3 is as follows. First, the side portion of the attachment portion 51 of the first reflecting plate 5 is hung on the first step portion 311 of the instrument main body 3 to bring the attachment portion 51 into surface contact with the first side surface 3c of the instrument main body 3. The piece 54 is inserted into the through hole 312. Thereby, the 1st reflecting plate 5 is positioned with respect to the 1st side surface 3c of the instrument main body 3, and the through-hole 55 of the 1st reflective plate 5 and the through-hole 313 of the instrument main body 3 are connected in the left-right direction. To do. Next, for example, the fastening member 57 is passed through the through holes 55 and 313 from the side of the first reflecting plate 5, and the first reflecting plate 5 is fixed to the first side surface 3 c of the instrument body 3 with the fastening member 57. . By this fastening member 57, the 1st reflecting plate 5 is relatively pressed by the 1st side surface 3c, and is fixed in the state which surface-contacted to the 1st side surface 3c.

Note that the tip of the protruding piece 54 inserted into the through hole 312 of the instrument body 3 is bent in a direction (for example, downward) intersecting the axial direction of the through hole 312 as indicated by an arrow in FIG. It is preferable to keep it. As a result, the projecting piece 54 can be hooked to the edge of the through hole 312, and the first reflector 5 can be fixed to the instrument body 3 at the two locations of the projecting piece 54 and the fastening member 57.
The method of fixing the second reflecting plate 7 to the instrument body 3 is also the same as that of the first reflecting plate 5. That is, the side portion of the mounting portion 71 of the second reflecting plate 7 is hung on the second stepped portion 321 of the instrument body 3 to bring the mounting portion 71 into surface contact with the second side surface 3d of the instrument body 3 and The piece 74 is inserted into the through hole 322. Thereby, the 2nd reflecting plate 7 is positioned with respect to 2nd side 3d of the instrument main body 3, and the through-hole 75 of the 2nd reflective plate 7 and the through-hole 323 of the instrument main body 3 are connected in the left-right direction. To do. Next, for example, the fastening member 77 is passed through the through holes 75 and 323 from the second reflecting plate 7 side, and the second reflecting plate 7 is fixed to the second side surface 3d of the instrument main body 3 by the fastening member 77. . By this fastening member 57, the second reflecting plate 7 is relatively pressed against the first side surface 3c and fixed in a state of surface contact with the first side surface 3c.

  Note that the tip of the protruding piece 74 passed through the through hole 322 of the instrument body 3 is in a direction (for example, downward) intersecting the axial direction of the through hole 322 as shown by the arrow in FIG. It is preferable to bend. Thereby, the projecting piece 74 can be hooked on the edge of the through hole 32, and the second reflecting plate 7 can be fixed to the instrument body 3 at two locations of the projecting piece 74 and the fastening member 77.

(2.4) Fixing position of reflecting plate by fastening member By the way, the fixing position of the first reflecting plate 5 by the fastening member 57 is such that the first reflecting plate 5 and the first side surface 3c of the instrument body 3 are in surface contact. In the region R1, the position closer to the second edge R1b than the center between the first edge R1a close to the attachment surface 3b and the second edge R1b far from the attachment surface 3b (that is, the recess) 36, the position close to the open end face 36b) R1c. Thereby, especially in the opening end surface 36b side, the 1st reflecting plate 5 and the instrument main body 3 can be closely_contact | adhered, and it can be made not to produce a clearance gap between the 1st reflecting plate 5 and the instrument main body 3. FIG. Further, it is possible to prevent a shadow caused by the gap from being generated.

  Further, the fixing position of the second reflecting plate 7 by the fastening member 77 is the same as that of the first reflecting plate 5. That is, the fixing position of the second reflecting plate 7 by the fastening member 77 is the first position close to the mounting surface 3b in the region R2 where the second reflecting plate 7 and the second side surface 3d of the instrument body are in surface contact. R2c is a position closer to the second edge R2b than the center between the edge R2a and the second edge R2b far from the mounting surface 3b (ie, a position closer to the opening end face 36b of the recess 36). . Thereby, especially on the opening end surface 36b side, the second reflector 7 and the instrument body 3 can be brought into close contact with each other so that no gap is generated. Further, it is possible to prevent a shadow caused by the gap from being generated.

  Further, as shown in FIG. 5B, on the side of the opening end surface 36b of the recess 36, the contact portion 6 between the instrument main body 3 and the first reflecting plate 5 is in the same plane (that is, flush). .) Similarly, on the side of the opening end surface 36b of the recess 36, the contact portion between the instrument body 3 and the second reflecting plate 7 is also in the same plane. Thereby, compared with the case where there is a level difference in each of the contact parts, it is possible to prevent a shadow due to the level difference from being generated.

  Further, as shown in FIG. 5B, the total length L2 of the first reflecting plate 5 and the first side plate 31 in the same plane with the contact portion 6 interposed therebetween is, for example, 0.5 cm or more, 7 .5 cm or less. Although not shown, the total length of the second reflector 7 and the second side plate 32 in the same plane with the contact portion in between is also the same as L described above. Thereby, when attaching and detaching the LED unit 9 with respect to the instrument main body 3, an operator's finger | toe etc. can be arrange | positioned between the LED unit 9 and the 1st reflecting plate 5. FIG. The LED unit 9 can be easily attached and detached.

  Moreover, the edge part 31a by the side of the opening end surface 36b among the 1st side plates 31 is bent so that a corner may be hidden. Similarly, the end portion 32a on the opening end face 36b side of the second side plate 32 is also bent so that the corners are hidden. Thereby, when attaching and detaching the LED unit 9, it is possible to reduce the possibility that the operator's finger contacts the corner of the instrument body 3.

(3) LED Unit FIGS. 8A and 8B are diagrams showing a configuration example of the LED unit 9. Specifically, FIG. 8A is a perspective view of the main surface side of the LED unit 9 as viewed obliquely from above, and FIG. 5B is a perspective view of the back side of the LED unit 9 as viewed from obliquely upward.
9A and 9B are diagrams showing a configuration example of the LED substrate 93. FIG. Specifically, FIG. 9A is a perspective view of the LED substrate 93 viewed obliquely from above, and FIG. 9B is an enlarged view of a part thereof.

  As shown in FIGS. 8A to 9B, the LED unit 9 includes a heat sink 91, a power supply box 92 provided on the back side of the heat sink 91, and LEDs arranged on the main surface side of the heat sink 91. A substrate 93, a reflection sheet 94 provided on the main surface side of the heat sink 91 and partially covering the LED substrate 93, and a cover panel 95 provided on the main surface side of the heat sink 91 and covering the LED substrate 93 and the reflection sheet 94; And a side cover 96 that covers both ends of the heat sink 91 in the longitudinal direction.

(3.1) Heat Sink As shown in FIGS. 8A to 9B, the heat sink 91 includes a support plate 911 to which the LED board 93 and the power supply box 92 are attached, a first side plate 912, 2 side plates 912. The support plate 911 has a main surface and a back surface, and a shape in plan view (hereinafter referred to as a planar shape) is a rectangular shape elongated in one direction. The first side plate 912 is provided on one of both side portions along the longitudinal direction of the support plate 911 and stands on the back side of the support plate 911. The second side plate 913 is provided on the other side of the both sides along the longitudinal direction of the support plate 911 and stands on the back side of the support plate 911. The first side plate 912 and the second side plate 913 are opposed to each other. Further, the first side plate 912 and the second side plate 913 are integrated with the support plate 911. For example, both side portions along the longitudinal direction of the metal plate are bent to form a first side plate 912 and a second side plate 913.

(3.2) Power Supply Box As shown in FIG. 8B, the power supply box 92 is a housing that houses an LED lighting circuit (that is, a power supply circuit) therein. The power supply box 92 is made of a material such as plastic, aluminum, or stainless steel, and has an external shape that extends long in one direction (that is, a shape having a longitudinal direction). For example, the LED lighting circuit converts AC power supplied from a wiring duct rail into DC and supplies the output (that is, DC power) to the LED board 93. The power supply box 92 is fixed to the back side of the heat sink 91 by fastening members (not shown) (for example, rivets, screws, etc.).

(3.3) LED substrate As shown in FIGS. 9A and 9B, the planar shape of the LED substrate 93 is a rectangular shape elongated in one direction. The LED substrate 93 is connected to the plurality of LED elements 931, a conductive layer (not shown) connecting the plurality of LED elements 931, a protective layer (not shown) covering and protecting the conductive layer, and the conductive layer. Connector terminal 933.

The LED element 931 is an element that has a pn junction using, for example, a semiconductor and emits light when electrons and holes are recombined when a current flows with a bias applied in the forward direction of the pn junction. The color emitted by the LED element 931 is not particularly limited, and may be, for example, daylight white or a light bulb color.
The conductive layer is formed on the base material of the LED substrate 93. For example, the base material is FR-4 or CEM-3, and the conductive layer is made of copper (Cu). By attaching the LED elements 931 to the conductive layer, the plurality of LED elements 931 are connected. The protective layer is insulative, and the color thereof is preferably the same color as the reflective sheet 94 (for example, white). The connector terminal 933 includes, for example, an input terminal for inputting current to the LED board 93 and an output terminal for outputting current from the LED board 93. The LED substrate 93 is fixed to the heat sink 91 by fastening members (for example, rivets, screws, etc.) 98.

  9A and 9B, the LED unit 9 has two LED boards 93, and these two LED boards 93 are arranged in a line in the longitudinal direction. Is shown. However, the present invention is not limited to this. In the present invention, the number of LED substrates 93 included in the LED unit 9 is not limited. For example, the LED unit 93 included in the LED unit 9 may be one or three or more. When there are three or more LED substrates 93, for example, three or more LED substrates 93 are arranged in a line in the longitudinal direction.

  Further, the LED substrate 93 may have one or two or more resistance elements (not shown) in order to suppress the LED element 931 from emitting light due to a discharge current when the power is turned off. In this case, the LED element 931 and the resistance element are also connected by the conductive layer. By causing the discharge current when the power is off to flow not only to the LED element 931 but also to the resistance element, the amount of current flowing through the LED element 931 can be reduced, and light emission when the power is off can be suppressed.

(3.4) Reflective Sheet As shown in FIGS. 9A and 9B, the reflective sheet 94 is disposed so as to cover the LED substrate 93 other than the LED element 931. For example, the LED unit 9 has four reflection sheets 94. Each of the four reflection sheets 94 is arranged from a side portion along the longitudinal direction of the LED substrate 93 to a side portion along the longitudinal direction of the heat sink 91.
The material of the reflection sheet 94 is, for example, polyethylene terephthalate (PET) or polypropylene (PP). Further, the surface of the reflection sheet 94 is, for example, white and glossy. In addition, although there is no restriction | limiting in particular in the material of the reflection sheet 94, the color of a surface, and the presence or absence of glossiness, the light beam of the LED lighting apparatus 1 can be raised by using a thing with a high reflectance of light.

(3.5) Cover Panel, Side Cover As shown in FIG. 8A, the cover panel 95 covers the main surface side of the heat sink 91, and emits light emitted from each LED element 931 of the LED substrate 93. The light reflected by the reflection sheet 94 is diffused and transmitted. The cover panel 95 has an elongated shape in one direction corresponding to the heat sink 91. The cover panel 95 can reduce the feeling of light emission caused by a large number of LED elements 931, and can be brought closer to surface light emission.

  The side cover 96 covers the end of the heat sink 91 in the longitudinal direction, and diffuses and transmits light emitted from each LED element 931 of the LED substrate 93 and light reflected by the reflection sheet 94. As shown in FIG. 9, the side cover 96 includes a frame body 961 attached to the end portion of the heat sink 91 in the longitudinal direction, and a panel plate 963 supported by the frame body 961. In addition, a step portion 962 is formed in the frame body 961. An end portion in the longitudinal direction of the cover panel 95 is disposed so as to overlap with the step portion 962. The cover panel 95 and the panel plate 963 are made of the same material, for example.

(Effect of 1st Embodiment)
The embodiment of the present invention has the following effects.
(1) The first reflector 5 is attached in a state of surface contact with the first side surface 3 c of the instrument body 3. The second reflecting plate 7 is attached in a state where the second reflecting plate 7 is in surface contact with the second side surface 3 d of the instrument body 3. Thus, since the attachment position with respect to the instrument main body 3 of the 1st, 2nd reflecting plates 5 and 7 exists in the side (namely, left-right direction) instead of the up-down direction of the instrument main body 3, it is the thickness of LED lighting apparatus. Can be made thinner.

(2) The fixing position of the first reflecting plate 5 by the fastening member 57 is the opening end surface 36b of the recess 36 in the region R1 where the first reflecting plate 5 and the first side surface 3c of the instrument body 3 are in surface contact. It is a position R1c close to. Thereby, especially in the opening end surface 36b side, the 1st reflecting plate 5 and the instrument main body 3 can be closely_contact | adhered, and it can be made not to produce a clearance gap between the 1st reflective plate 5 and the instrument main body 3. FIG. It is possible to prevent a shadow caused by the gap from being generated. The fixing position of the second reflecting plate 7 by the fastening member 77 is also a position R2c close to the opening end surface 36b of the recess 36. Thereby, it can contribute to the improvement of the external appearance of LED lighting device 1.

(3) On the opening end face 36b side, the contact portion 6 between the instrument main body 3 and the first reflecting plate 5 is in the same plane. Similarly, the contact portion between the instrument body 3 and the second reflector 7 is also in the same plane. Thereby, compared with the case where there is a level difference in each of the contact parts, it is possible to prevent a shadow due to the level difference from being generated. It can contribute to the improvement of the appearance of the LED lighting device 1.

(4) The tip of the protrusion 54 of the first reflector 5 is inserted into the through hole 312 and bent downward, for example. As a result, the projecting piece 54 can be hooked to the edge of the through hole 312, and the first reflector 5 can be fixed to the instrument body 3 at the two locations of the projecting piece 54 and the fastening member 57. Thereby, the fixed state with respect to the instrument main body 3 of the 1st reflecting plate 5 can be made more stable. Similarly, the tip of the projecting piece 74 of the second reflecting plate 7 is inserted into the through hole 322 and is bent downward, for example. Thereby, the projecting piece 74 can be hooked to the edge of the through hole 322, and the second reflecting plate 7 can be fixed to the instrument body 3 at two locations of the projecting piece 74 and the fastening member 77. Thereby, the fixed state with respect to the instrument main body 3 of the 2nd reflecting plate 7 can be made more stable.

(5) The instrument body 3 has a convex portion 41 on the mounting surface side. By this convex part 41, the number of the parts which contact a to-be-attached part among LED lighting apparatuses 1 can be increased, and arrangement | positioning balance can be taken. Thereby, it can contribute to stabilization of the attachment state with respect to the to-be-attached part of LED lighting apparatus 1. FIG.

(6) The instrument body 3 has a recess 47 on the opposite side of the power terminal block 43. The concave portion 47 can prevent the positioning convex portion 421 of the power connector terminal 42, the ground terminal 423, and the leg portion of the fastening member 45 from coming into contact with the attached portion. Thereby, even if the protruding part 421 for positioning, the leg part of the fastening member 45, and the part protruding to the attachment surface side of the ground terminal 423 are sharp, these do not contact the attached part such as the ceiling. It is possible to prevent the part from being damaged. The light control terminal block and the light control connector terminal 44 are the same as those of the power supply terminal block 43 and the power supply connector terminal 42.

(7) The LED lighting device 1 described in the first embodiment and the LED lighting device 101 described in the second embodiment to be described later can share the appliance body 3 (common parts). Thereby, it can contribute to the reduction of the manufacturing cost of a LED lighting apparatus.

(Modification)
In 1st Embodiment, the case where the 1st reflecting plate 5 was attached to the 1st side surface 3c of the instrument main body 3 using the fastening member 57 was demonstrated. Similarly, the case where the second reflecting plate 7 is attached to the second side surface 3d of the instrument body 3 using the fastening member 77 has been described. However, in the present invention, the method of attaching the first reflector 5 and the second reflector 7 to the instrument body 3 is not limited to this. The method of attaching the first reflecting plate 5 and the second reflecting plate 7 to the instrument body 3 may be welding. Even in such a case, the same effects as the effects (1) to (7) of the first embodiment described above are obtained.

Second Embodiment
In said 2nd Embodiment, the case where the LED lighting apparatus 1 was provided with the 1st reflective plate 5 and the 2nd reflective plate 7 was demonstrated. However, the present invention is not limited to this. In the present invention, the LED lighting device may include only one of the first reflecting plate 5 and the second reflecting plate 7 as the reflecting plate. Such a configuration provides the same effects as the effects (1) to (7) of the first embodiment described above.

In the present invention, the LED lighting device may not include a reflector. For example, a configuration in which the first reflecting plate 5 and the second reflecting plate 7 are omitted may be used. A configuration example when the first reflecting plate 5 and the second reflecting plate 7 are omitted will be described.
FIGS. 10A and 10B are diagrams illustrating a configuration example of the LED lighting device 101 according to the second embodiment of the present invention. Specifically, FIG. 10A is a perspective view of the LED illumination device 101 as viewed from obliquely above, and FIG. 10B is a perspective view of the LED illumination device 101 as viewed from obliquely below. FIG. These are the side views which looked at the LED lighting apparatus 101 from the side.

  As shown in FIGS. 10A to 10C, the LED illumination device 101 is a trough illumination device, for example, and includes an instrument body 3 and an LED unit 9. The LED lighting device 101 is not provided with the first reflecting plate 5 and the second reflecting plate 7, but the other configuration is the same as the LED lighting device 1 described in the first embodiment. The second embodiment has the same effects as the effects (1) and (5) to (7) of the first embodiment.

<Correspondence>
In the embodiment of the present invention, the first reflecting plate 5 and the second reflecting plate 7 correspond to the “reflecting plate” of the present invention. The first step portion 311 and the second step portion 321 correspond to the “step portion” of the present invention. Further, the through holes 312 and 322 correspond to the “opening” of the present invention.

<Others>
The present invention is not limited to the embodiments and modifications described above. Based on the knowledge of those skilled in the art, design changes or the like may be added to each embodiment or modification, and an aspect in which such changes are added is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1,101 LED illuminating device 3 Appliance main body 3a Support surface 3b Mounting surface 3c 1st side surface 3d 2nd side surface 5 1st reflecting plate 6 Contact part 7 2nd reflecting plate 9 LED unit 31,912 First side plate 31a, 31b Ends 32, 913 Second side plate 33 Third side plate 34 Fourth side plate 35, 911 Support plate 36 Recess 36b Open end surface 37 Spring metal fittings 41, 421 Protrusion 42 Power supply connector terminal 43 Power supply terminal block 44 Dimming connector terminal 45, 57, 77, 375 Fastening member 47 Recessed portion 51, 71 Mounting portion 52, 72 Reflecting portion 53, 73 Connection portion 54, 74 Projection piece 55, 75, 312, 313, 323, 351, 352 354, 422, 431, 432, 433 Through hole 91 Heat sink 92 Power supply box 93 LED board 94 Reflective sheet 95 Cover panel 96 Side cover 11 first step portion 321 second stepped portion 353 cut portion 371 spring 372 spring support portion 373 arm 376 fastening claws 423 ground terminal 931 LED element 933 connector terminals 961 frame 962 stepped portion 963 panel plates

Claims (4)

An instrument body that supports the LED unit, and at least a part of the opposite side of the support surface that supports the LED unit is a mounting surface for the mounted portion;
A reflecting plate that reflects light emitted from the LED unit in a set direction;
The reflector has a mounting portion having a rectangular surface, a connecting portion connected to the mounting portion, and a reflecting portion connected to the mounting portion by the connecting portion,
The reflection plate and the instrument body are, in the rectangular surface, the second portion than the center portion between the first edge portion close to the attachment surface and the second edge portion far from the attachment surface. LED lighting device fixed at a position close to the edge of the.   2. The LED lighting device according to claim 1, wherein a side portion along a longitudinal direction of the attachment portion is L-shaped in a cross-sectional view so as to be hung above a step portion of the instrument body.   The instrument body has a recess on the side of the support surface, and the end of the recess on the opening end face side of the instrument body side plate constituting the recess is bent inwardly of the recess, The LED lighting device according to claim 1, wherein the LED lighting device is bent outward from the recess.   The LED illumination device according to any one of claims 1 to 3, wherein an angle formed by the connection portion and the reflection portion is 100 ° or more and 170 ° or less.

Images