JP6158886B2 - Light source unit and lighting device - Google Patents

Description

  The present invention relates to a light source unit and an illumination device.

  2. Description of the Related Art Conventionally, there is an illuminating device including an LED lamp body having an LED unit substrate on which an LED element and electronic components of a lighting circuit are mounted, and a substrate support member that supports the LED unit substrate in a casing (see, for example, Patent Document 1) ).

JP2015-64947A

  In the illuminating device described in Patent Literature 1, the light-transmitting cover is fitted to the power source shielding member for covering the electronic components of the lighting circuit mounted on the LED unit substrate, but an impact is applied to the light-transmitting cover. And the center part of a translucent cover may be dented and a crack etc. may arise. That is, the translucent cover is vulnerable to impact.

  Moreover, in the illuminating device described in Patent Document 1, at least a part of the outer peripheral surface of the translucent cover is exposed from the power source shielding member. Therefore, the user can easily remove the translucent cover by grasping the exposed portion of the outer peripheral surface of the translucent cover, and can easily touch the internal electrical components.

  An object of the present invention is to make it difficult to remove a light-transmitting cover of a light source unit.

The light source unit according to one aspect of the present invention is
A light source module that emits light;
A rib that rises on the side opposite to the side where the light source module is located, an opening for allowing light from the light source module to pass therethrough, and a fixing cover in which the rib is formed along the periphery of the opening;
A light transmissive cover fixed to the fixed cover in a state of being surrounded by the ribs and covering the opening.

  In the present invention, the light-transmitting cover is fixed to the fixed cover while being surrounded by the ribs of the fixed cover and covering the opening of the fixed cover. For this reason, according to the present invention, it is possible to make it difficult to remove the light-transmitting cover.

1 is a perspective view of a lighting device according to Embodiment 1. FIG. FIG. 3 is a side view of the lighting apparatus according to Embodiment 1. FIG. 2 is a plan view of the lighting device according to Embodiment 1. FIG. 3 is a cross-sectional view of the lighting device according to Embodiment 1 taken along line AA. FIG. 2 is an exploded perspective view of the lighting device according to Embodiment 1. FIG. 2 is an exploded perspective view of the lighting device according to Embodiment 1. FIG. 3 is a perspective view of the lighting unit according to Embodiment 1. FIG. 3 is an exploded perspective view of the lighting unit according to Embodiment 1. The (a) perspective view of the attachment auxiliary member which concerns on Embodiment 1, (b) The perspective view in another angle. The (a) top view, (b) front view, (c) bottom view, (d) BB sectional view, (e) CC sectional view of the attachment auxiliary member concerning Embodiment 1. The (a) perspective view of the spring which concerns on Embodiment 1, (b) Top view, (c) Side view, (d) Back view. Sectional drawing which shows the process of attaching the illumination unit which concerns on Embodiment 1 to a frame. FIG. 6 is a cross-sectional view of the lighting apparatus according to Embodiment 2 taken along the line AA. FIG. 6 is a perspective view of a lighting unit according to Embodiment 2. FIG. 6 is an exploded perspective view of a lighting unit according to Embodiment 2. Sectional drawing which shows the process of attaching the illumination unit which concerns on Embodiment 2 to a frame. FIG. 9 is a partial enlarged cross-sectional view illustrating a process of attaching a light transmissive cover according to Embodiment 3 to a fixed cover. FIG. 9 is a partial enlarged cross-sectional view illustrating a process of attaching a light transmissive cover according to Embodiment 3 to a fixed cover. FIG. 10 is a perspective view of a fixed cover according to Embodiment 4. FIG. 6 is a perspective view of a light transmissive cover according to Embodiment 4. (A) The figure which shows the stress distribution of the light-transmitting cover which concerns on Embodiment 1, (b) The figure which shows the stress distribution of the light-transmitting cover which concerns on Embodiment 3, (c) The light which concerns on Embodiment 4 The figure which shows stress distribution of a permeable cover. The graph which shows the relationship between the dent amount of the center part of a light-transmitting cover, the height of a rib, and the presence or absence of a boss | hub.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or it corresponds in each figure. In the description of the embodiments, the description of the same or corresponding parts will be omitted or simplified as appropriate. In the description of the embodiment, the arrangement, orientation, etc., such as “top”, “bottom”, “left”, “right”, “front”, “back”, “front”, “back”, etc., are for convenience of explanation. It is only described as such, and does not limit the arrangement or orientation of devices, instruments, components, and the like. About the structure of an apparatus, an instrument, components, etc., the material, a shape, a magnitude | size, etc. can be suitably changed within the scope of the present invention.

Embodiment 1 FIG.
The configuration of the apparatus according to the present embodiment, the assembly procedure of the apparatus according to the present embodiment, and the effects of the present embodiment will be described in order.

*** Explanation of configuration ***
With reference to FIGS. 1 to 11, a configuration of lighting apparatus 900 that is an apparatus according to the present embodiment will be described.

  The lighting device 900 is used by being embedded in the embedded hole.

  As shown in FIGS. 1, 2, and 3, the lighting device 900 includes a frame body 100 and a lighting unit 300. The frame body 100 is attached to an attachment portion such as a ceiling provided with an embedding hole. The illumination unit 300 is detachably attached to the frame body 100.

  As shown in FIGS. 4, 5, and 6, the frame body 100 includes a brim part 110, a rising part 120, and an inclined part 170. The flange 110 abuts against the edge of a circular embedding hole formed in the attached part. The rising portion 120 rises from the brim portion 110 in a substantially vertical direction. Three attachment springs 200 are attached to the rising portion 120. The rising portion 120 is provided with a first hole 150 and a second hole 160. The inclined portion 170 is formed in an oblique direction inside the flange portion 110 and has a circular opening 171 at a substantially central portion.

  The collar portion 110 is formed in a ring shape. Specifically, the flange portion 110 is formed in an annular shape so that the outer diameter is larger and the inner diameter is smaller than the diameter of the embedding hole provided in the attached portion.

  The rising portion 120 includes a frame portion 130 and three attachment spring holding portions 140. The frame part 130 is formed continuously in the circumferential direction. The attachment spring holding portions 140 are formed at three locations on the outer periphery of the frame portion 130. A first hole 150 penetrating the inner periphery of the frame portion 130 is formed at one location on the outer periphery of the frame portion 130. One second hole 160 penetrating the inner periphery of the frame portion 130 is formed on each side of the portion facing the first hole 150 on the outer periphery of the frame portion 130.

  In the circumferential direction with respect to the central axis of the frame portion 130, when the position where one attachment spring holding portion 140 is formed is set to the 0 degree position among the three attachment spring holding portions 140, the remaining two The positions where the attachment spring holding portions 140 are formed are positions of 120 degrees and 240 degrees, respectively. The position where the first hole 150 is formed is a position of an angle larger than 120 degrees and smaller than 240 degrees, and preferably a position of 180 degrees. Of the two second holes 160, the position where one of the second holes 160 is formed is an angle greater than 0 degrees and smaller than 120 degrees, and preferably an angle between 10 degrees and 30 degrees. Is the position. The position where the other second hole 160 is formed is an angle position larger than 240 degrees and smaller than 360 degrees, and preferably an angle position of 330 degrees or more and 350 degrees or less. The position where the two second holes 160 are formed is preferably separated from the position of 0 degrees by the same angle.

  As described above, it is desirable that three or more attachment spring holding portions 140 are provided at equal intervals. It is desirable that one first hole 150 is provided in the middle of any two attachment spring holding portions 140. It is desirable that one second hole 160 be provided at a position facing the first hole 150, or one at a position slightly shifted from the position to both sides. In addition, the position and number of the attachment spring holding part 140, the 1st hole 150, and the 2nd hole 160 can be changed suitably. Specifically, the attachment spring holding part 140 should just be provided in the 2 or more position where the attachment spring 200 attached to the attachment spring holding part 140 does not interfere with the power supply terminal block 540 mentioned later. Preferably, two or more attachment spring holding portions 140 are provided at equal intervals. The 1st hole 150 should just be provided in the 1 or more position which does not overlap with the position of the attachment spring holding | maintenance part 140. FIG. The second hole 160 may be provided at one or more positions that do not overlap with the positions of the attachment spring holding part 140 and the first hole 150. When the first hole 150 and the second hole 160 are provided one by one, the first hole 150 is desirably provided at a position facing the second hole 160. When one first hole 150 and two second holes 160 are provided, the first hole 150 is desirably provided at a position opposite to an intermediate position between the two second holes 160.

  The attachment spring 200 is a plate spring formed by bending a long and flat metal plate at an acute angle in at least one place in the longitudinal direction. One end in the longitudinal direction of the attachment spring 200 is attached to the attachment spring holding part 140. The other end in the longitudinal direction of the mounting spring 200 is bent so as to be hooked in the embedded hole of the mounted portion. With the bent portion, the lighting device 900 can be temporarily fixed to the attached portion, or the lighting device 900 can be prevented from dropping.

  The inclined portion 170 has an inclined surface 180 formed in a bowl shape or a conical glass shape. The inclined surface 180 is a reflecting surface that reflects light from a light source to be described later.

  As shown in FIGS. 4, 5, 6, 7, and 8, the illumination unit 300 includes a light source unit 400 and a power supply unit 500.

  The light source unit 400 includes a light source module 410, an attachment member 420, an attachment auxiliary member 430, a fixed cover 440, a spring 450, a screw 460, a light transmissive cover 470, and an insulating sheet 480.

  The light source module 410 is attached to the attachment member 420. The attachment auxiliary member 430 assists the attachment of the light source module 410 to the attachment member 420. The fixed cover 440 fixes the attachment auxiliary member 430 and also fixes the light source module 410 to the attachment member 420. The spring 450 is attached to the fixed cover 440 so as to protrude outward. The screw 460 fastens the fixed cover 440 to the attachment member 420. The light transmissive cover 470 is transparent or translucent. That is, the light transmissive cover 470 has a light transmissive property. The light transmissive cover 470 is attached to the fixed cover 440 and covers the light emitting unit of the light source module 410.

  The light source module 410 includes a plurality of surface-mount (SMD) LEDs 411 and a substrate 412 on which the plurality of LEDs 411 are mounted. The LED 411 is not limited to the surface mount type, and may be another type of LED such as a chip-on-board (COB) LED. Moreover, it replaces with LED411 and other types of light sources, such as organic EL or a laser, may be used.

  The attachment member 420 has a plate shape. The attachment member 420 includes a light source attachment part 421 to which the light source module 410 is attached and a protruding part 422 formed on the outer surface of the light source attachment part 421. A screw hole 423 for fastening the fixing cover 440, a pair of holes 424 for attaching the attachment auxiliary member 430, and the like are formed around the light source attachment portion 421.

  The attachment member 420 has an attachment surface 425. The fixed cover 440 is attached to the attachment surface 425. As will be described later, the fixed cover 440 is provided with an opening 442. The light source module 410 is fixed to a region including the center of the mounting surface 425 while being sandwiched between the fixed cover 440 and the mounting member 420, and irradiates light through the opening 442 of the fixed cover 440. The attachment auxiliary member 430 is installed for positioning the light source module 410 at a position adjacent to the region where the light source module 410 is fixed on the attachment surface 425.

  As shown in FIGS. 9 and 10, the attachment auxiliary member 430 is a plate material formed in an arcuate shape, and is formed at attachment convex portions 431 formed at both end sides of one surface and substantially at the center of the other surface. And a fixed convex portion 432. The attachment auxiliary member 430 is attached to the attachment member 420, and the light source module 410 is attached to a fixed position of the attachment member 420 by bringing the light source module 410 into contact with a guide surface 433 that is an inner surface formed in an arch shape. To guide the mounting of the light source module 410.

  The attachment auxiliary member 430 further includes a first convex portion 434 that is formed so as to rise from the same surface as the surface on which the fixed convex portion 432 is formed and to be turned back halfway. The first convex portion 434 has a spring property. Specifically, the first convex portion 434 includes an elastic portion 435 formed in a U shape, and a locking convex portion 436 that is formed near the tip of the elastic portion 435 and is hooked in the first hole 150. The first convex portion 434 has a structure called a so-called snap fit, and the lighting projection 300 is held in the frame 100 by keeping the locking convex portion 436 inserted into the first hole 150 by the elastic force of the elastic portion 435. Secure to.

  The guide surface 433 of the attachment auxiliary member 430 extends perpendicularly to the attachment surface 425 and contacts a part of the side surface of the light source module 410 to guide the attachment of the light source module 410 to the attachment surface 425. Thereby, the light source module 410 is positioned on the mounting surface 425. In the present embodiment, a part of the side surface of the light source module 410 has a shape bulging outward. The guide surface 433 is recessed inward to match the shape of the light source module 410 that swells outward from the side surface. Therefore, the work of attaching the light source module 410 to the attachment surface 425 can be performed smoothly.

  The mounting surface 425 is provided with the pair of holes 424 described above. The mounting auxiliary member 430 is fixed to the mounting surface 425 by fitting the pair of mounting convex portions 431 of the mounting auxiliary member 430 into the pair of holes 424.

  A groove 447 is provided on the facing surface 446 facing the mounting surface 425 of the fixed cover 440. The mounting auxiliary member 430 is fixed to the facing surface 446 by fitting the fixing convex portion 432 of the mounting auxiliary member 430 into the groove 447. Note that a hole may be provided instead of the groove 447.

  A cutout 448 is provided on the side surface of the fixed cover 440. A part of the attachment auxiliary member 430 is exposed to the outside from the notch 448 on the side surface of the fixed cover 440. The first convex portion 434 of the attachment auxiliary member 430 is disposed at a portion exposed to the outside of the attachment auxiliary member 430.

  The fixed cover 440 includes a cover main body 441 having a substantially circular opening at the center, an inner wall 443 formed so as to stand up from the peripheral edge of the opening 442 of the cover main body 441, and an outer periphery of the cover main body 441. And an outer wall portion 444 formed so as to stand up from the portion. The fixed cover 440 further includes a pair of spring attachment portions 445 to which a part of the outer wall portion 444 is recessed and a pair of springs 450 are attached.

  Three convex portions 449 are provided on the surface of the fixed cover 440 opposite to the facing surface 446. The two convex portions 449 surround the end portion of the spring mounting portion 445, and the remaining one convex portion 449 surrounds the end edge portion of the groove 447. When the lighting unit 300 is placed on a desk or the like, these convex portions 449 are in contact with the desk top surface or the like, and the light transmissive cover 470 is prevented from coming into contact with the desk top surface or the like and being damaged.

  As shown in FIG. 11, the spring 450 is a plate spring formed by bending a long and flat metal plate at a plurality of locations in the longitudinal direction. The spring 450 has a U-shaped portion 451 formed by being bent in a U-shape, and a portion that is cut and raised near one end of the U-shaped portion 451 so as to protrude obliquely, and is engaged with the spring mounting portion 445. And a stop 452. The spring 450 further includes a second convex portion 453 that extends from the other end of the U-shaped portion 451 and is bent so that at least one portion in the longitudinal direction is bent, and is hooked in the second hole 160. The 2nd convex part 453 fixes the illumination unit 300 to the frame 100 by keeping the state inserted in the 2nd hole 160 by the elastic force.

  In the present embodiment, the first convex portion 434 of the attachment assisting member 430 is hooked in the first hole 150 of the rising portion 120 and the second convex portion 453 of the spring 450 is hooked in the second hole 160 of the rising portion 120. The lighting unit 300 is securely fixed to the frame body 100. Note that the second convex portion 453 may be formed as a part of the fixed cover 440 instead of being formed on the spring 450 attached to the fixed cover 440. That is, the light source unit 400 is not limited to the spring 450, and it is only necessary to have the second convex portion 453 that is caught in the second hole 160 as a part of any member.

  The light transmissive cover 470 is a circular plate formed of a resin having translucency, and has two claw portions 471 that protrude from the outer peripheral portion so as to be substantially perpendicular to one surface. The light-transmitting cover 470 is attached to the fixed cover 440 so as to cover the opening 442 of the fixed cover 440 by fitting the claw portion 471 into the fixed portion 491 that is a hole provided around the opening 442.

  The insulating sheet 480 is disposed between the light source module 410 and the attachment member 420.

  The power supply unit 500 includes a power supply storage case 510, a power supply circuit unit 520, a metal plate 530, a power supply terminal block 540, screws 550, and heat radiation fins 560.

  The power storage case 510 is a bottomed cylindrical case attached to the attachment member 420. The power circuit unit 520 is stored in the power storage case 510 and supplies power to the light source module 410. The metal plate 530 is attached to the power storage case 510 so as to close the opening of the power storage case 510. The power supply terminal block 540 is attached to the metal plate 530 and is electrically connected to the power supply circuit unit 520 via an electric wire. The screws 550 fasten the metal plate 530 to the power storage case 510. The heat radiation fins 560 are attached to the outer periphery of the power storage case 510.

*** Explanation of assembly procedure ***
An assembling procedure of lighting apparatus 900 that is an apparatus according to the present embodiment will be described.

  The lighting unit 300 is assembled as follows.

  First, the attachment member 420 is spot welded to the power storage case 510 and the power circuit unit 520 is inserted into the power storage case 510. A metal plate 530 is fastened to the periphery of the opening of the power storage case 510 in which the power circuit unit 520 is stored with screws 550, and the power terminal block 540 is attached to the metal plate 530.

  Next, the attachment auxiliary member 430 is attached to the attachment member 420, the light source module 410 is applied to the attachment auxiliary member 430 as guided by the attachment auxiliary member 430, and the light source module 410 is attached to a predetermined position of the attachment member 420. . Next, the fixed cover 440 is attached to the attachment member 420 so that the fixed cover 440 covers the light source module 410 and the attachment auxiliary member 430 in a state where the spring 450 is attached to the spring attachment portion 445 of the fixed cover 440. The fixed cover 440 is fastened with screws 460 and the light transmissive cover 470 is attached to the fixed cover 440.

  The lighting unit 300 is attached to the frame 100 as follows.

  As illustrated in FIG. 12, the lighting unit 300 is inserted into the rising portion 120 of the frame body 100 in a horizontal state. At this time, the first convex portion 434 of the attachment assisting member 430 is positioned above the first hole 150 of the rising portion 120, and the second convex portion 453 of the spring 450 is relative to the second hole 160 of the rising portion 120. Position it above. When the lighting unit 300 is pushed down, the first convex portion 434 and the second convex portion 453 are pressed by the inner wall of the rising portion 120 and elastically deformed. When the lighting unit 300 is further pushed down, the first protrusion 434 and the second protrusion 453 reach the first hole 150 and the second hole 160, respectively, and return to their original shapes when they reach the first hole 150 and the second hole 160, respectively. 150 and the second hole 160. Thereby, the illumination unit 300 is fixed to the frame 100.

*** Explanation of the effect of the embodiment ***
In the present embodiment, an attachment auxiliary member 430 for positioning the light source module 410 is installed at a position adjacent to the region where the light source module 410 is fixed on the attachment surface 425. For this reason, according to the present embodiment, the light source unit 400 can be easily assembled.

  In the present embodiment, a part of the attachment auxiliary member 430 is exposed to the outside from the notch 448 on the side surface of the fixed cover 440, and at least the mechanism for fixing the lighting unit 300 to the frame body 100 is exposed to the exposed portion. Some are provided. Specifically, a first protrusion 434 that is caught in the first hole 150 of the frame 100 is provided in a portion exposed to the outside of the attachment assisting member 430. For this reason, according to the present embodiment, the positioning of the light source module 410 on the mounting surface 425 and the fixing of the lighting unit 300 to the frame body 100 are both performed by the mounting auxiliary member 430 that is a single member. Can do.

  A cutout 448 is provided on the side surface of the fixed cover 440 in accordance with a portion exposed to the outside of the attachment auxiliary member 430. For this reason, according to the present embodiment, the fixing cover 440 can also be positioned by the attachment auxiliary member 430.

  In the present embodiment, by adopting a snap fit structure, when the lighting unit 300 is inserted into the frame body 100 from above, the first protrusion 434 and the second protrusion 453 are respectively connected to the first hole 150 and the first protrusion 150. The second holes 160 can be fitted almost simultaneously. For this reason, the workability | operativity at the time of attaching the illumination unit 300 to the frame 100 improves.

  Since the attachment member 420 is separate from the fixed cover 440, it can be made of a material different from the material of the fixed cover 440. Specifically, the material of the attachment member 420 can be an elastic member. Moreover, the 1st convex part 434 can be made conspicuous by making the attachment member 420 into a color different from the fixed cover 440, such as gray and red.

  The fixed cover 440 also functions as a reflector in the lighting unit 300, and reflects light emitted from the light source module 410 and light reflected inside without passing through the light transmissive cover 470 to transmit light. The light can be emitted outside the cover 470. This increases the light extraction efficiency. If the reflectance of the fixed cover 440 is greater than or equal to the reflectance of the substrate 412 of the light source module 410, the light emitted from the LED 411 is particularly easily reflected and emitted to the outside of the light-transmissive cover 470, so that the light extraction efficiency is further improved. Rise.

*** Other configurations ***
In the present embodiment, the lighting unit 300 is fixed to the frame body 100 by the first convex portion 434 and the second convex portion 453 being hooked in the first hole 150 and the second hole 160, respectively. The positional relationship between 434 and the first hole 150 or the positional relationship between the second convex portion 453 and the second hole 160 may be reversed. That is, the first convex portion 434 may be provided in the rising portion 120, and the first hole 150 may be provided in the attachment auxiliary member 430. Moreover, the 2nd convex part 453 may be provided in the standing part 120, and the 2nd hole 160 may be provided in the spring 450 or the fixed cover 440 grade | etc.,.

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  As shown in FIGS. 13, 14, and 15, in the present embodiment, the attachment auxiliary member 430 does not have the first protrusion 434, and the protrusion 422 of the attachment member 420 becomes the first protrusion. Equivalent to. That is, in the present embodiment, instead of the first convex portion 434 of the attachment assisting member 430 in the first embodiment, the protruding portion 422 of the attachment member 420 is hooked in the first hole 150 of the rising portion 120. Therefore, the first hole 150 is provided at the same position as the attachment member 420 in the height direction, that is, at a position higher than that in the first embodiment.

  The procedure for assembling the lighting unit 300 is the same as that in the first embodiment.

  The lighting unit 300 is attached to the frame 100 as follows.

  As shown in FIG. 16, the projecting portion 422 of the mounting member 420 is inserted into the first hole 150 of the rising portion 120 with the illumination unit 300 tilted. Next, when the lighting unit 300 is pushed down so that the lighting unit 300 rotates around the protrusion 422, the second convex portion 453 is pressed by the inner wall of the rising portion 120 and elastically deforms. When the lighting unit 300 is further pushed down, the elastic force is exerted when the second convex portion 453 reaches the second hole 160 to return to the original shape and fit into the second hole 160. Thereby, the illumination unit 300 is fixed to the frame 100.

Embodiment 3 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 17 shows a state before the light transmissive cover 470 is attached to the fixed cover 440. FIG. 18 shows a state after the light transmissive cover 470 is attached to the fixed cover 440. In FIGS. 17 and 18, hatching is omitted.

  As in the first embodiment, the fixed cover 440 is provided with an opening 442 for allowing light from the light source module 410 to pass through.

  In the present embodiment, the fixed cover 440 has a rib 492 that rises on the side opposite to the side where the light source module 410 is located. The rib 492 is formed along the periphery of the opening 442. Specifically, the rib 492 rises from the cover body 441 and is formed in an annular shape along the periphery of the circular opening 442. That is, the rib 492 is provided over the entire circumference of the periphery of the opening 442.

  The light transmissive cover 470 is fixed to the fixed cover 440 while being surrounded by the ribs 492 of the fixed cover 440 and covering the opening 442 of the fixed cover 440. The state in which the light transmissive cover 470 is surrounded by the ribs 492 of the fixed cover 440 is a state in which the outer peripheral surface of the light transmissive cover 470 is not exposed from the fixed cover 440. If the outer peripheral surface of the light transmissive cover 470 is not exposed, the user cannot grasp the outer peripheral surface of the light transmissive cover 470 and remove the light transmissive cover 470. Therefore, according to the present embodiment, it is possible to make it difficult to remove the light-transmitting cover 470.

  The height dimension H1 of the inner peripheral wall of the rib 492 of the fixed cover 440 and the height dimension H2 of the outer peripheral wall of the light-transmitting cover 470 have a relationship of H1> H2. That is, the inner peripheral wall of the rib 492 has a height dimension larger than that of the outer peripheral wall of the light transmissive cover 470. Therefore, according to the present embodiment, the rib 492 can reliably hide the outer peripheral surface of the light transmissive cover 470. In addition, in order to prevent a user from putting a finger between the inner peripheral wall of the rib 492 and the outer peripheral wall of the light transmissive cover 470, a gap between the inner peripheral wall of the rib 492 and the outer peripheral wall of the light transmissive cover 470 is not provided. The width is desirably 1 centimeter or less.

  As in the first embodiment, a plurality of fixing portions 491 are formed around the opening 442 of the fixing cover 440. Each fixing portion 491 is a hole. The light transmissive cover 470 has a plurality of claw portions 471, and the plurality of claw portions 471 are fixed to the fixed cover 440 by being hooked on the plurality of fixed portions 491 of the fixed cover 440. The number of the claw portions 471 and the fixing portions 491 is two each. The two claw portions 471 are provided at positions facing each other across the center of the light transmissive cover 470. Specifically, the two claw portions 471 are provided at positions that are equidistant from the center of the light-transmitting cover 470 in opposite directions. The two fixing portions 491 are provided at positions facing each other across the center of the opening 442 of the fixing cover 440. Specifically, the two fixing portions 491 are provided at positions equidistant from the center of the opening 442 in the opposite directions. In addition, the number of the nail | claw part 471 and the fixing | fixed part 491 may be three or more, respectively, if it is the same number. The three or more claw portions 471 are desirably arranged at equal intervals on the same circumference. It is desirable that the three or more fixing portions 491 are also arranged at equal intervals on the same circumference.

  In the present embodiment, the light transmissive cover 470 includes a rib 472 that protrudes in the opposite direction to the two claw portions 471. The rib 472 is formed along the outer periphery of the light transmissive cover 470. Specifically, the rib 472 rises from the disc-shaped light transmissive cover 470 and is formed in an annular shape along the outer periphery of the light transmissive cover 470. That is, the rib 472 is provided over the entire outer periphery of the light transmissive cover 470.

  The rising tip 473 of the rib 472 of the light-transmitting cover 470 is located lower than the rising tip 493 of the rib 492 of the fixed cover 440. That is, the rib 472 of the light-transmitting cover 470 rises to a position lower than the leading edge 493 of the rising of the rib 492 of the fixed cover 440. For this reason, the height dimension H2 of the outer peripheral wall of the light-transmitting cover 470 including the outer peripheral wall of the rib 472 can be suppressed smaller than the height dimension H1 of the inner peripheral wall of the rib 492 of the fixed cover 440.

  As described above, in this embodiment, after the light transmissive cover 470 is attached to the cover main body 441 of the fixed cover 440, the user touches the rib 492 of the fixed cover 440. The light transmissive cover 470 cannot be removed. Therefore, it is possible to prevent the user from removing the light transmissive cover 470, and it is possible to prevent the user from directly touching the electronic component provided inside.

  Further, in the present embodiment, when the lighting unit 300 is placed on a desk or the like, the rib 492 of the fixed cover 440 is in contact with the desk top surface or the like, and the light transmissive cover 470 is in contact with the desk top surface or the like. To prevent.

Embodiment 4 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  The configuration of the fixed cover 440 and the light transmissive cover 470 will be described with reference to FIGS. 19 and 20.

  As in the first embodiment, the fixed cover 440 is provided with an opening 442 for allowing light from the light source module 410 to pass through. The light transmissive cover 470 is fixed to the fixed cover 440 while covering the opening 442 of the fixed cover 440.

  In the present embodiment, the light transmissive cover 470 includes at least one convex portion 474 and another at least one convex portion 475. The number of the convex portions 474 and 475 may be any number, and may not be the same number. However, in the present embodiment, the number is two.

  Around the opening 442 of the fixed cover 440, there are a fixing portion 491, at least one recess 494, another fixing portion 491, and another at least one recess 495 in order along the periphery of the opening 442. Is provided. Specifically, along the peripheral edge of the circular opening 442, at least one recess 494, 180 within a range of 45 degrees to 135 degrees from the fixing part 491 at a position of 0 degrees with respect to the center of the opening 442. At least one concave portion 495 is provided in the range of another fixed portion 491, 225 degrees to 315 degrees at the position of degrees.

  In the fixing portion 491, the light transmissive cover 470 is fixed. As in the first embodiment, the fixing portion 491 is a hole. The light transmissive cover 470 includes a claw portion 471 that is hooked on the fixing portion 491.

  The light transmissive cover 470 is also fixed by another fixing portion 491. Similar to the first embodiment, another fixing portion 491 is also a hole. The light transmissive cover 470 has another claw portion 471 that is hooked on the other fixing portion 491.

  The number of the concave portions 494 is the same as the number of the convex portions 474 of the light-transmitting cover 470, and is two in the present embodiment. Two convex portions 474 of the light transmissive cover 470 are fitted in the two concave portions 494. In the present embodiment, the convex portion 474 is a cylindrical boss and the concave portion 494 is a round hole. However, if the convex portion 474 can be fitted into the concave portion 494, the shapes of the convex portion 474 and the concave portion 494 can be changed as appropriate. It is. As a specific example, the convex portion 474 may have a polygonal column shape. The recess 494 may be a polygonal hole.

  Similar to the concave portions 494, the number of the concave portions 495 is the same as the number of the convex portions 475 of the light-transmitting cover 470, and is two in this embodiment. Two convex portions 475 of the light transmissive cover 470 are fitted in the two concave portions 495. About the shape of the convex part 475 and the recessed part 495, it is the same as that of the shape of the convex part 474 and the recessed part 494.

  In the present embodiment, the two claw portions 471 of the light transmissive cover 470 are provided at positions facing each other across the center of the light transmissive cover 470. Specifically, the two claw portions 471 are provided at positions that are equidistant from the center of the light-transmitting cover 470 in opposite directions. Then, on the circumference passing through the two claw portions 471, the two convex portions 474 are provided so as to be positioned on one side of a straight line connecting the two claw portions 471, and the other two convex portions 475 are provided with two It is provided so as to be located on another side of the straight line connecting the claw portions 471.

  The configuration of the fixed cover 440 corresponds to the configuration of the light transmissive cover 470. That is, in the present embodiment, the two fixing portions 491 of the fixing cover 440 are provided at positions facing each other across the center of the opening 442. Specifically, the two fixing portions 491 are provided at positions equidistant from the center of the opening 442 in the opposite directions. Then, on the circumference passing through the two fixing portions 491, two concave portions 494 are provided so as to be positioned on one side of a straight line connecting the two fixing portions 491, and another two concave portions 495 are provided as two fixing portions. It is provided so that it may be located on the other side of the straight line connecting 491.

  In addition, the number of the nail | claw part 471 and the fixing | fixed part 491 may be three or more, respectively, if it is the same number. The three or more claw portions 471 are desirably arranged at equal intervals on the same circumference. It is desirable that the three or more fixing portions 491 are also arranged at equal intervals on the same circumference. It is desirable that at least one convex portion is provided between each two adjacent claw portions 471 on the circumference passing through three or more claw portions 471. It is desirable that at least one concave portion into which a corresponding convex portion is fitted is provided between each two adjacent fixed portions 491 on a circumference passing through three or more fixed portions 491.

  Referring to FIGS. 21 and 22, the effect obtained by providing rib 472 on light-transmitting cover 470 in Embodiment 3, and the projections 474 and 475 on light-transmitting cover 470 in Embodiment 4. The effect obtained by providing will be described.

  FIGS. 21A, 21 </ b> B, and 21 </ b> C show simulation results of an impact hammer test for the light transmissive cover 470 in a state where the light transmissive cover 470 is fixed to the fixed cover 440. On the surface where the claw portion 471 of the light-transmitting cover 470 is provided, a region where an arrow is drawn is a region where a large stress is applied when an impact is applied to the center of the opposite surface. The region at the tip of the arrow is a region where the stress acting when an impact is applied to the center of the opposite surface is small.

  As shown in FIG. 21A, when the light-transmitting cover 470 is not provided with the ribs 472 or the convex portions 474 and 475, the two claw portions 471 caught on the two fixing portions 491 of the fixing cover 440. Stress is applied in the direction perpendicular to the straight line connecting. Therefore, the light transmissive cover 470 is easily broken.

  As shown in FIG. 21B, when ribs 472 are provided on the light transmitting cover 470, the straight line connecting the two claw portions 471 hooked on the two fixing portions 491 of the fixing cover 440 is used. Stress applied in the vertical direction is reduced. Therefore, the light transmissive cover 470 is hardly broken. That is, the impact resistance of the light transmissive cover 470 is increased.

  As shown in FIG. 21C, when the light-transmitting cover 470 is provided with the convex portions 474 and 475, the two claw portions 471 are only caught on the two fixing portions 491 of the fixing cover 440. Rather, the two convex portions 474 and the other two convex portions 475 are fitted into the two concave portions 494 and the other two concave portions 495. The force is radially distributed from the central portion, and the light-transmitting cover 470 is hardly broken. That is, the impact resistance of the light transmissive cover 470 is increased. When the convex portion 475 of the light-transmitting cover 470 and the concave portion 495 of the fixed cover 440 are not provided, and only the convex portion 474 and the concave portion 494 of the fixed cover 440 are provided on the light-transmitting cover 470. However, a certain effect can be obtained.

  Both the rib 472 and the convex portions 474 and 475 may be provided on the light transmissive cover 470. That is, in Embodiment 4, the light transmissive cover 470 may include a rib 472 that is formed along the outer periphery of the light transmissive cover 470 and rises on the opposite side of the at least one convex portion 474. In that case, an even higher effect can be obtained.

  FIG. 22 summarizes the relationship between the amount of recess in the central portion of the light-transmitting cover 470, the height of the rib 472, and the presence or absence of the convex portions 474 and 475 that are bosses. According to this figure, when there is no convex part 474,475, in order to suppress the dent amount of the center part of the light-transmitting cover 470, it is necessary to make the height of the rib 472 high, but the convex part 474, When 475 exists, it turns out that the amount of dents of the center part of the light-transmitting cover 470 can be suppressed irrespective of the height of the rib 472.

  As mentioned above, although embodiment of this invention was described, you may implement combining some of these embodiment. Alternatively, any one or some of these embodiments may be partially implemented. Specifically, any one of those described as “parts” in the description of these embodiments may be employed, or some arbitrary combinations may be employed. In addition, this invention is not limited to these embodiment, A various change is possible as needed.

  DESCRIPTION OF SYMBOLS 100 Frame, 110 Head part, 120 Standing part, 130 Frame part, 140 Attachment spring holding part, 150 1st hole, 160 2nd hole, 170 Inclination part, 171 Opening part, 180 Inclination surface, 200 Attachment spring, 300 Illumination Unit, 400 light source unit, 410 light source module, 411 LED, 412 substrate, 420 mounting member, 421 light source mounting portion, 422 protruding portion, 423 screw hole, 424 hole, 425 mounting surface, 430 mounting auxiliary member, 431 mounting convex portion, 432 Fixed convex part, 433 Guide surface, 434 First convex part, 435 Elastic part, 436 Locking convex part, 440 Fixed cover, 441 Cover main body part, 442 Opening part, 443 Inner wall part, 444 Outer wall part, 445 Spring attaching part 446 Opposing surface, 447 groove, 448 Notch, 449 convex part, 450 spring, 451 U-shaped part, 452 locking part, 453 second convex part, 460 screw, 470 light transmissive cover, 471 claw part, 472 rib, 473 tip, 474 convex part, 475 Convex part, 480 insulating sheet, 491 fixing part, 492 rib, 493 tip, 494 concave part, 495 concave part, 500 power supply unit, 510 power supply storage case, 520 power supply circuit part, 530 metal plate, 540 power supply terminal block, 550 screw, 560 Radiation fin, 900 lighting device.

Claims (7)

A light source module that emits light;
A rib that rises on the side opposite to the side where the light source module is located, an opening for allowing light from the light source module to pass therethrough, and a fixing cover in which the rib is formed along the periphery of the opening;
A light-transmitting cover fixed to the fixed cover in a state surrounded by the ribs and covering the opening ,
The light source unit outer peripheral wall of the light transmissive cover that is packaged in a position lower than the rise of the tip of the rib.   The light source unit according to claim 1, wherein an inner peripheral wall of the rib has a height dimension larger than an outer peripheral wall of the light transmissive cover.   3. The light source unit according to claim 1, wherein the light transmissive cover includes another rib that is formed along an outer periphery of the light transmissive cover and rises to a position lower than a leading end of the rib. A light source module that emits light;
A rib that rises on the side opposite to the side where the light source module is located, an opening for allowing light from the light source module to pass therethrough, and a fixing cover in which the rib is formed along the periphery of the opening;
A light-transmitting cover fixed to the fixed cover in a state surrounded by the ribs and covering the opening ,
The light source unit wherein light transmitting cover is formed along the outer periphery of the light transmitting cover, that have a another rib rises to a position lower than the rise of the tip of the rib. A plurality of holes are provided around the opening of the fixed cover,
The light source unit according to claim 3 or 4 , wherein the light-transmitting cover has a plurality of claw portions, and the plurality of claw portions are fixed to the fixed cover by being hooked in the plurality of holes. The light source unit according to claim 5 , wherein the plurality of claw portions are provided at positions facing each other across the center of the light transmissive cover. The light source unit according to any one of claims 1 to 6 ,
And a power supply unit that supplies power to the light source module.

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