JP2009087578A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture capable of lessening possibility of dropping-out of a cover from a main body in the lighting fixture having a mounting means for mounting by moving the cover to the main body in the predetermined direction at a pushing-up state. <P>SOLUTION: The mounting means for the main body 11 and the cover 12 comprises a main body rib 28 arranged on the main body, a cover rib 45 prepared on the cover 12 and capable of being laminated on the main body rib 28, a barrier rib 32 set in projection on an end of the main body rib 28, and a plurality of recessed sections 46, 47 arranged at a lower surface of the cover rib 45 in facing to the main body rib 28. A level difference surface 49 of the recessed sections 46, 47 and the barrier rib 32 are brought into contact with each other by housing the tip of the barrier rib 32 in the recessed sections 46, 47 as the cover 12 is moved in the predetermined direction against the main body 11, and a relative movement of the cover rib 45 against the main body rib 28 is regulated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting fixture, for example, a lighting fixture used in a state of being attached to a construction surface such as a ceiling surface or a wall surface.

A general ceiling-mounted lighting fixture covers a main body attached to the ceiling surface, a main light source such as a ring-shaped fluorescent lamp held by the main body, a sub-light source such as an LED night light, and the entire main light source and sub-light source. And a cover attached to the main body. Light from the main light source is irradiated as indirect illumination from the outer periphery side of the cover, and part of the light from the sub light source is irradiated from the outer periphery side of the cover in the same manner as the main light source, and the remaining part is a component of the cover. The light is irradiated downward from a gap between a certain cover main body and the cap portion. In such a lighting fixture, after fixing the main body to the ceiling surface, a main light source and a sub light source are attached to the main body, and then a cover is fixed to the main body (for example, refer to Patent Document 1).
JP 2007-227177 A

  By the way, when attaching the cover to the main body, the lighting device described in Patent Document 1 aligns the notch provided in the main body with the support protrusion provided in the cover, and rotates the cover in a state where the cover is pushed up. By attaching the support protrusion, the support protrusion is laminated on the support rib of the main body. When such an attachment means is adopted, even if an attempt is made to reversely rotate the main body engaged at the normal position without lifting the cover, the barrier prevents the reverse rotation, thereby preventing the cover from falling off. The However, if the cover is slightly lifted and the support protrusion gets on the barrier, the support protrusion can be rotated in reverse while being in sliding contact with the upper end of the barrier, which may cause a dropout.

  Such a possibility does not occur only in a lighting fixture that employs a mounting means for attaching a cover by rotating the main body, but a lighting fixture that employs a mounting means for attaching a cover by sliding the main body. Also occurs.

  The present invention has been made in view of the above-described problems, and the object thereof is also provided in a lighting fixture including attachment means attached by moving the cover in a predetermined direction with the cover pushed up with respect to the main body. An object of the present invention is to provide a lighting apparatus that can reduce the possibility of a cover falling off.

In order to achieve the aforementioned object, the present invention provides:
A main body that holds the light source and is fixed to the ceiling surface;
A cover attached to the main body so as to cover the light source;
An attachment means for attaching the cover to the main body,
The attachment means is
A main body rib provided in parallel to the ceiling surface from the main body;
A cover rib provided on the cover and stackable on the main body rib;
A barrier projecting from the end of the main body rib along the stacking direction with the cover rib, and maintaining the stacked state of the main body rib and the cover rib by overriding before the cover rib is stacked on the main body rib; ,
A plurality of recesses are provided on the lower surface of the cover rib facing the main body rib.

In the lighting fixture thus configured, the attachment means between the main body and the cover includes a main body rib provided on the main body, a cover rib provided on the cover and stackable on the main body rib, and an end of the main body rib And a plurality of concave portions provided on the lower surface of the cover rib so as to face the main body rib, so that the front end of the barrier is accommodated in the concave portion, and the step surface of the concave portion and the barrier come into contact with the main body. The relative movement of the cover rib with respect to the rib is restricted. Since the lower surface of the cover rib is provided with a plurality of recesses, there is a possibility that even if the cover rib stacked on the main body rib rotates in the reverse direction, the barrier tip is accommodated in any of the recesses and the cover falls off from the main body. It is greatly reduced.
Here, examples of the light source include an annular fluorescent lamp and an incandescent lamp.

Further, in the present invention, the cover rib inclined surface that can be slidably contacted with the barrier is provided at the front end portion of the cover rib in the overcoming direction,
A main body rib inclined surface capable of sliding contact with the cover rib inclined surface is provided on the barrier.

  In the lighting fixture configured in this way, the cover rib inclined surface is provided at the tip of the cover rib, and the main body rib inclined surface that is slidable against the cover rib inclined surface is provided on the barrier. Even when the cover is lifted less with respect to the main body, the cover rib inclined surface and the main body rib inclined surface can get over relatively while sliding on each other, and the cover can be guided to the specified position and attached. it can.

In the present invention, the cover rib is laminated on the main body rib by rotating the cover with respect to the main body,
The mountain-side ridgeline and the valley-side ridgeline of the cover rib inclined surface are characterized in that they are along the radiation having the rotation center of the cover with respect to the main body as a base point.

  In the lighting fixture configured as described above, since the peak side ridge line and the valley side ridge line of the cover rib inclined surface are formed along the radiation having the rotation center of the cover as a base point, when the cover rib inclined surface contacts the barrier The barrier can be easily captured by the valley-side ridge line, and the barrier can be easily climbed by the mountain-side ridge line, so that the cover can be easily attached to the main body.

Further, in the present invention, the cover rib inclined surface that can be slidably contacted with the barrier is provided at the front end portion of the cover rib in the overcoming direction,
A body rib inclined surface slidably contactable with the cover rib inclined surface is provided on the barrier,
The cover rib is laminated on the main body rib by rotating the cover with respect to the main body, the attachment means,
The mountain-side ridgeline and the valley-side ridgeline of the cover rib inclined surface are characterized in that they are along the radiation having the rotation center of the cover with respect to the main body as a base point.

  In the lighting fixture configured as described above, by rotating the cover, the cover rib inclined surface provided at the tip of the cover rib is brought into sliding contact with the main body rib inclined surface provided in the barrier, thereby making the barrier easy. There is provided attachment means for getting over and laminating the cover rib on the main body rib. Since the mountain-side ridge line and the valley-side ridge line of the cover rib inclined surface are formed along the radiation starting from the rotation center of the cover, by rotating the cover relative to the main body, the main body rib inclined surface and the cover rib inclined surface By the sliding contact, the cover rib can be easily laminated on the main body rib to attach the cover.

  According to the present invention, the attachment means between the main body and the cover is protruded from the main body rib provided on the main body, the cover rib provided on the cover and stackable on the main body rib, and the end of the main body rib. Since the barrier includes a plurality of recesses provided on the lower surface of the cover rib so as to face the body rib, the tip of the barrier is accommodated in the recess, and the step surface of the recess contacts the barrier so that the cover rib is Relative movement is restricted. Since the lower surface of the cover rib is provided with a plurality of recesses, even if the cover rib laminated on the main body rib rotates in the reverse direction, the tip of the barrier is accommodated in one of the recesses. The effect that the possibility of dropping off is greatly reduced is obtained.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. 1 is an overall perspective view of a lighting fixture according to the present invention, FIG. 2 is a longitudinal sectional view of the lighting fixture shown in FIG. 1, FIG. 3 is a bottom view of the lighting fixture shown in FIG. FIG. 5 is an exploded perspective view of the main part of the main body, FIG. 6 is an exploded perspective view of the cover, and FIG. 7 is an enlarged perspective view of the main part of the cover main body.

  As shown in FIGS. 1 to 4, the lighting fixture 10 of the present invention includes a main body 11 attached to the ceiling surface S, and a cover 12 attached to the main body 11 and covering the main light source 13 and the sub light source 14. The main body 11 is formed in a substantially disk shape, and is attached to the ceiling surface S by connecting the hook ceiling 8 provided on the main body 11 to the hook ceiling adapter 9 provided on the ceiling surface S.

  An inclined surface 15 is formed on the lower surface of the main body 11 so as to gradually approach the ceiling surface S toward the outer peripheral edge. A lamp support 16 and a lamp socket 17 are provided on the inclined surface 15 so as to protrude downward. The double ring fluorescent lamp 13 as a main light source has a lamp base 18 electrically connected to a lamp socket 17 and is supported by a lamp support 16 at the other end and held by the main body 11. An adapter cover 19 is attached to the center of the main body 11.

  As shown in FIG. 5, the adapter cover 19 includes a body 20 and an inner cover 21 that can be divided in the vertical direction. The inner cover 21 is made of, for example, polypropylene resin, and the body 20 is made of a light-transmitting material, such as acrylic resin, so that the irradiation light from the auxiliary light source 14 can be transmitted.

  On the inner cover 21, two pairs of U-shaped cross-sectionally shaped substrate holding portions 22, which form a pair, protrude in a symmetrical position with respect to the center of the inner cover 21. . Each substrate holding portion 22 is provided with a substantially U-shaped groove 23 on a surface facing each other.

  The two mounting boards 24 on which the two blue LEDs 14 as the sub-light sources are mounted are held on the inner cover 21 by inserting the left and right ends of each mounting board 24 into the grooves 23 of the two sets of board holding portions 22. Has been. The blue LED 14 that is a sub-light source is used as a night light that is turned on when the main light source 13 is turned off. The inner cover 21 further houses a remote control light receiving unit 25 for an infrared remote controller that performs on / off control, dimming control, and the like of the lighting fixture 10. Further, a pair of elastic locking claws 26 are provided on the outer peripheral surface of the inner cover 21. When the body 20 is mounted from below, an engaging portion (not shown) provided on the body 20 is provided. And the body 20 and the inner cover 21 are coupled and substantially integrated.

  The body 20 is a substantially disk-shaped member formed of a transparent resin, and is formed with a window hole 27 penetrating so as to expose the lower surface of the remote control light receiving unit 25. At the lower end of the outer peripheral surface of the body 20, four main ribs 28 having an approximately 1/8 arc shape (opening angle 45 °) are arranged at equal intervals (45 ° intervals) along the circumferential direction. As a result, four insertion ports 29 are formed between the adjacent main body ribs 28 as spaces for inserting cover ribs 45 of the cover 12 described later.

  One end of each main body rib 28 (one end in the clockwise direction when viewed from below) is connected by a rib 30 and a vertical wall 31 provided in parallel above the main body rib 28 to form a substantially U-shaped groove portion. 33 is formed. At the other end of the main body rib 28 (one end on the counterclockwise side when viewed from below), a barrier 32 that is a claw projecting upward is formed. The barrier 32 is provided with a main body rib inclined surface 34 that gradually inclines toward the back side of the groove portion 33 as it goes upward (see FIG. 9).

  As shown in FIG. 6, the cover 12 includes a frame-shaped cover main body 40 and a cap portion 41 fixed to the central portion of the cover main body 40. The cover body 40 is formed in a substantially rectangular frame shape with a rectangular hole 42 formed in the center portion thereof by a resin having translucency such as acrylic resin, and covers the lower side of the fluorescent lamp (main light source) 13. . The cross-sectional shape of the rectangular frame portion 53 of the cover body 40 is formed in a substantially V shape protruding downward (see FIG. 2). One surface of the rectangular frame portion 53 that defines the rectangular hole 42 also functions as a reflective surface that reflects the LED light source 14 described later.

  Referring also to FIG. 7, a ring-shaped frame 43 having a smaller diameter than the rectangular hole 42 is disposed above the rectangular hole 42. The ring-shaped frame 43 is connected to four sides of the rectangular frame portion 53 by four connecting portions 44. The inner diameter of the ring-shaped frame 43 is slightly larger than the outer diameter of the body 20 and can be fitted to each other. On the inner peripheral surface of the ring-shaped frame 43, four cover ribs 45 are provided on the opposite side of the connecting portion 44 so as to protrude radially inward at 90 ° intervals. A first recess 46 and a second recess 47 are provided on the lower surface of the cover rib 45 along the circumferential direction.

  When the cover 12 (cover main body 40) is attached to the main body 11 (body 20), a cover rib inclined surface 48 inclined in the same direction as the main body rib inclined surface 34 is formed at one end of the cover rib 45 facing the barrier 32 of the body 20. Is formed. In addition, vertical walls 49 (49a, 49b, 49c) are formed on the other end of the cover rib 45, and on the side surfaces of the first concave portion 46 and the second concave portion 47 on the cover rib inclined surface 48 side, respectively. Inclined surfaces 50 a and 50 b that are inclined in the same direction as the cover rib inclined surface 48 are formed on the side surface of the recess 47 opposite to the cover rib inclined surface 48. The mountain-side ridgeline ML and the valley-side ridgeline VL of the cover rib inclined surface 48 are along the radiation whose origin is the rotation center C when the cover 12 is attached to the main body 11 (see FIG. 8B). The main body rib inclined surface 34 and the cover rib inclined surface 48 may be either one, but in order to facilitate the mounting of the cover 12, both may be provided.

  Further, on the outer peripheral surface of the ring-shaped frame 43, a pair of vertical ribs 51a and 51b for fixing the cap portion 41 are provided on both sides of the four connecting portions 44, respectively. An internal thread 52 is formed.

  As shown in FIG. 6, the cap portion 41 is a rectangular bottomed box-shaped member formed of a light-transmitting material, for example, an acrylic resin, and is continuous from the bottom portion 60 and the bottom portion 60. And four side wall portions 61. The bottom 60 becomes the front when the lighting fixture 10 is installed on the ceiling surface S. A screw hole 66 is formed in the wall portion 61 at a position facing the female screw 52 provided in the vertical rib 51 a of the cover main body 40, and the cap portion 41 is fixed to the cover main body 40 by four screws 67. .

  From four sides of the bottom portion 60, a rectangular flange portion 62 is formed extending obliquely downward. The size of the wall 61 having four sides is smaller than the rectangular hole 42 of the cover main body 40, and is inserted into the rectangular hole 42 and fixed to the cover main body 40. Further, the outer dimension of the flange portion 62 is larger than the rectangular hole 42, and when attached to the cover body 40, the rectangular hole 42 is hidden when viewed from below, and the rectangular frame portion 53 and the flange portion 62 of the cover body 40 are substantially omitted. In parallel, an illumination space 63 is formed over the entire circumference of the wall portion 61 between the cover body 40 and the cap portion 41. The wall portion 61 can be seen from below through the illumination space 63 (see FIG. 2).

  As shown in FIG. 2, the lighting fixture 10 is installed by first connecting the hook ceiling 8 to the hook ceiling adapter 9 provided on the ceiling surface S and fixing the main body 11 to the ceiling surface S. Then, as shown in FIG. 8, the cover 12 is pushed upward by matching the phases of the cover rib 45 of the cover body 40 and the insertion port 29 of the body 20, and the cover rib 45 is inserted into the insertion port 29. Rotate in the direction of the arrow shown. At this time, even if the amount of pushing up of the cover 12 is insufficient, the cover rib inclined surface 48 of the cover rib 45 is in sliding contact with the main body rib inclined surface 34 of the barrier 32 as shown in FIG. The barrier 32 is easily overcome, and the barrier 32 engages with the vertical wall 49 c of the second recess 47.

  Further, by rotating the cover 12 and then moving it downward, the entire cover rib 45 gets over the barrier 32 and is accommodated in the substantially U-shaped groove 33 as shown in FIG. The bottom surface is in contact with the top surface of the main body rib 28 and is laminated in a stable state, and the vertical wall 49 a is engaged with the barrier 32. This prevents the cover 12 from falling off from the main body 11. Further, the cover 12 is positioned and attached at a normal position with respect to the main body 11.

  As shown in FIG. 8A, in the state where the cover 12 is attached to the main body 11 at a regular position, the rectangular outer peripheral edge of the cover 12 is parallel to the wall surface 7 of the room and the aesthetic appearance is impaired. There is no.

  Further, the mountain side ridge line ML and the valley side ridge line VL of the cover rib inclined surface 48 are formed along the radiation starting from the rotation center C (see FIG. 8B) when the cover 12 is attached to the main body 11. The valley-side ridge line VL has its entire length simultaneously abutting against the barrier 32 and reliably catches the barrier 32. Similarly, the mountain-side ridge line ML can easily get over the barrier 32.

  As described above, the main body rib 28, the cover rib 45, the barrier 32, and the first and second recesses 46 and 47 function as attachment means between the main body 11 and the cover 12.

  In the state where the cover 12 is attached to the main body 11, as shown in FIG. 2, the wall portion 61 is located between the fluorescent lamp (main light source) 13 and the LED light source (sub light source) 14, and the cover main body 40 ( It can be seen from below through an illumination space 63 which is a gap between the rectangular frame portion 53) and the cap portion 41 (the flange portion 62). Further, along the direction orthogonal to the ceiling surface S, a flange portion 62 that overlaps with the gap 63 is provided in the cap portion 41, and the edge portion 62 a of the flange portion 62 and the edge portion 40 a of the central opening of the cover main body 40 are provided. The edge part 61a of the wall part 61 is arrange | positioned rather than the extension line of the line L which ties. As a result, the main body 11 and the connecting portion between the body 20 and the cover main body 40 are shielded by the wall portion 61 and cannot be seen from the illumination space 63, and a good-looking appearance is obtained.

Next, the effect | action of the lighting fixture 10 of this invention is demonstrated based on FIGS. 8-14.
8 is a bottom view showing the positional relationship between the body and the cover main body when the cover is attached, FIGS. 9 to 11 are side views showing the engagement state of the main body rib and the cover rib, and FIG. 12 is shown on the wall. FIG. 13 is a bottom view of the cap portion showing a state in which the irradiation light of the auxiliary light source is emitted from the corner portion of the cap portion, and FIG. 14 is an irradiation of the mark of the cap portion and the auxiliary light source. It is a bottom view of the cap part which shows the state in which the light corresponded.

  As shown in FIG. 2, the lighting device 10 is attached to the ceiling surface S and the LED light source (sub-light source) 14 is turned on, or the LED light source (sub-light source) 14 is turned on, and the cover 12 is mounted as described above. When attached to the main body 11, the irradiation light SLB 1 from the LED light source 14 passes through the transparent body 20 and is irradiated to the wall portion 61 of the cap portion 41, and the shadow of the barrier 32 of the body 20 is reflected on the wall portion 61. .

  That is, as shown in FIG. 12, when the cover 12 is in a normal position with respect to the main body 11, the irradiation light SLB <b> 1 from the two blue LED light sources 14 causes the central portion of the wall portion 61 to be shaded by the barrier 32. It becomes darker and both sides are relatively brighter. It can be confirmed that the cover 12 is attached to the normal position by visually confirming from the lower side through the illumination space 63 that the central portion of the wall portion 61 is a dark portion.

  Alternatively, whether or not the cover 12 is in the normal position can be easily determined by reflecting the illumination part LP by the irradiation light SLB1 from the two blue LED light sources 14 at the line-symmetrical position on the wall part 61. Can be confirmed. As a result, when it is found that the cover 12 is not in the normal position, the cover 12 is reattached, or the cover 12 is further rotated to correct the position.

  In the present embodiment, the barrier 32 is transparent, but since it has a thickness, it is possible to produce a thin shadow on the wall portion 61. However, the barrier 32 may be formed of an opaque material or may be coated with an opaque paint so that a clear shadow SH can be reflected.

  Further, when the LED light source (sub-light source) 14 is arranged so as to irradiate the bottom part 60 of the cap part 41 with the irradiation light SLB2, as shown in FIG. 3, the irradiation part of the irradiation light SLB2 irradiated to the bottom part 60 It can be confirmed that the cover 12 is attached to the normal position by the LP being in a symmetrical position with respect to the center of the cap portion 41. The symmetry position may be line symmetry or point symmetry. In this case, in order to confirm the position of the irradiation portion LP of the irradiation light SLB2 irradiated to the bottom portion 60, it is necessary that the contour shape of the cap portion 41 is other than a perfect circle.

  As shown in FIG. 13, when the contour shape of the cap portion 41 is a square shape (polygon), the irradiation light SLB <b> 2 can be distinguished by being emitted from the vicinity of the corner portion 68 of the cap portion 41. Become. Here, the vicinity of the corner is, for example, a range within 1/4 of the corner 68 with respect to the entire length of the diagonal line of the bottom 60.

  As shown in FIG. 2, most of the irradiation light MLB from the fluorescent lamp (main light source) 13 illuminates the room or the like via the milky white rectangular frame portion 53 of the cover body 40. Further, a part of the irradiation light MLB is reflected by the wall portion 61 of the cap portion 41, further reflected by the rectangular frame portion 53, and emitted from the illumination space 63 to illuminate the room. The indirect illumination light reflected from the wall portion 61 and irradiated from the central portion of the cover 12 illuminates the interior of the room and the like together with the main illumination that passes through the rectangular frame portion 53 as soft light.

  In the above description, the sub-light source 14 has been described as a blue LED light source that is a point light source, but is not limited thereto, and is not limited to this, and may be a line light source (line LED, a plurality of LEDs arranged side by side) It may be a sphere. In short, any light source may be used as long as it causes a shadow SH on the wall portion 61 or can irradiate the bottom portion 60 with the irradiation light SLB. Similarly, the main light source 13 is not limited to a fluorescent lamp, and may be an incandescent lamp.

  Furthermore, since the cover rib 45 includes two recesses, a first recess 46 and a second recess 47, which engage with the barrier 32 of the main body rib 28, the cover 12 can be attached to the normal position as shown in FIG. For example, even if the lighting apparatus 10 vibrates violently due to an earthquake or the like and rotates in a direction in which the cover 12 is removed, the barrier 32 engages with the first recess 46 and the cover 12 falls off as shown in FIG. Is prevented. Even if the cover 12 is further rotated in the direction of removing the cover 12 from the state shown in FIG. 10, the barrier 32 engages with the second recess 47 as shown in FIG. Acting as a device, the possibility of the cover 12 falling off is greatly reduced.

(Modification)
In order to easily determine whether or not the cover 12 is in the normal position based on the shadow position of the barrier 32 reflected on the wall portion 61 and the position of the irradiation light SLB2 of the blue LED 14 irradiated on the bottom portion 60, the wall portion 61 or You may make it provide the display corresponding to the shadow position and the position of irradiation light SLB in the bottom part 60. FIG. This display can be a print mark formed at a predetermined position on the wall 61 or the bottom 60, a convex or concave formed when the cover body 40 is molded, a surface treatment such as a satin finish, a lens, or the like.

  In addition, the display of such a magnitude | size which does not impair the external appearance of the lighting fixture 10 is good. In the case of providing a large display (particularly, the display provided on the bottom 60), it is preferable that the display is designed so as to have a sense of unity with the appearance of the lighting fixture 10.

  The display can be, for example, a triangular mark 64 formed at a substantially central position of the wall portion 61 of the cap portion 41, as shown in FIG. If the mark 64 is positioned at the approximate center of the shadow SH of the barrier 32 reflected on the wall portion 61, it can be determined that the cover 12 is in the normal position.

Moreover, as shown in FIG. 14, it can be set as the round mark 65 provided in the bottom part 60 which shows the position where irradiation light SLB2 is irradiated when the cover 12 exists in a regular position. If the irradiation part LP by the irradiation light SLB2 from the blue LED 14 is irradiated around the mark 65, it can be determined that the cover 12 is in the normal position.
In addition, when a lens is used as a display, it is necessary to set each other's position so that the irradiation light from blue LED 14 permeate | transmits a lens.

  According to the luminaire 10 described above, attachment means between the main body 11 and the cover 12 includes a main body rib 28 provided on the main body 11, a cover rib 45 provided on the cover 12 and stackable on the main body rib 28, Since it includes a barrier 32 projecting from the end of the main body rib 28 and a plurality of recesses 46 and 47 provided on the lower surface of the cover rib 45 so as to face the main body rib 28, even if the cover 12 rotates reversely The tip of the barrier 32 is accommodated in one of the recesses 46 and 47, and the step surface 49 of the recess 46 and 47 and the barrier 32 come into contact with each other, so that the relative movement of the cover rib 45 with respect to the main body rib 28 is restricted. Thereby, the possibility that the cover 12 falls off from the main body 11 is greatly reduced.

  In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

  For example, in the above-described embodiment, the cover 12 is described as a rotary lighting fixture that is mounted on the main body 11 by rotating it. However, the present invention is applicable to a fitting lighting fixture that is mounted by sliding parallel to the ceiling surface S. The same effect can be achieved. The wall 61 may be provided on the outermost surface of the cover 12. However, in this case, the shadow by the main light source 13 may also be reflected on the wall portion 61.

  In addition, the light source, the ceiling surface, the main body, the cover, the mounting means, the main body rib, the cover rib, the barrier, the recess, the lighting fixture, the cover rib inclined surface, the main body rib inclined surface, the cover rib inclined surface ridge line, the cover rib exemplified in the above-described embodiment The material, shape, dimensions, form, number, location, etc. of the valley side ridge line of the inclined surface and the rotation center of the cover are arbitrary as long as the present invention can be achieved, and are not limited.

It is a whole perspective view of the lighting fixture which concerns on this invention. It is a longitudinal cross-sectional view of the lighting fixture shown in FIG. It is a bottom view of the lighting fixture shown in FIG. It is a perspective view which shows the state which decomposed | disassembled the lighting fixture shown in FIG. 1 into the main body and the cover. It is a principal part disassembled perspective view of a main body. It is a disassembled perspective view of a cover. It is a principal part expansion perspective view of a cover main body. It is a bottom view which shows the positional relationship of the body and cover main body at the time of attachment of a cover. It is a side view which shows the 3rd engagement state of a main body rib and a cover rib. It is a side view which shows the 2nd engagement state of a main body rib and a cover rib. It is a side view which shows the 1st engagement state of a main body rib and a cover rib. It is the conceptual diagram which shows the shadow of the barrier reflected on the wall part, and a luminance graph. It is a bottom view of a cap part which shows the state where the irradiation light of a sublight source radiate | emits from the corner | angular part of a cap part. It is a bottom view of a cap part which shows the state where the mark of the cap part and the irradiation light of the sub light source corresponded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Main body 12 Cover 13 Fluorescent lamp (main light source)
14 LED light source (sub-light source)
28 Body rib (mounting means)
32 Barrier (claw, mounting means)
34 Body rib inclined surface 45 Cover rib (attachment means)
46 1st recessed part (attachment means)
47 Second recess (mounting means)
48 Cover rib inclined surface C Center of rotation of the cover S Ceiling surface ML Mountain side ridge line of the cover rib inclined surface VL Valley side ridge line of the cover rib inclined surface

Claims (4)

A main body that holds the light source and is fixed to the ceiling surface;
A cover attached to the main body so as to cover the light source;
An attachment means for attaching the cover to the main body,
The attachment means is
A main body rib provided in parallel to the ceiling surface from the main body;
A cover rib provided on the cover and stackable on the main body rib;
A barrier projecting from the end of the main body rib along the stacking direction with the cover rib, and maintaining the stacked state of the main body rib and the cover rib by overriding before the cover rib is stacked on the main body rib; ,
A lighting fixture comprising a plurality of recesses provided on a lower surface of the cover rib facing the main body rib. A cover rib inclined surface that can be slidably contacted with the barrier is provided at the front end of the cover rib in the overcoming direction,
The lighting fixture according to claim 1, wherein a main body rib inclined surface slidably contactable with the cover rib inclined surface is provided on the barrier. The cover rib is laminated on the main body rib by rotating the cover with respect to the main body,
The lighting apparatus according to claim 1, wherein the mountain-side ridge line and the valley-side ridge line of the inclined surface of the cover rib are along radiation having a rotation center of the cover with respect to the main body as a base point. A cover rib inclined surface that can be slidably contacted with the barrier is provided at the front end of the cover rib in the overcoming direction,
A body rib inclined surface slidably contactable with the cover rib inclined surface is provided on the barrier,
The cover rib is laminated on the main body rib by rotating the cover with respect to the main body, the attachment means,
The lighting apparatus according to claim 1, wherein the mountain-side ridge line and the valley-side ridge line of the inclined surface of the cover rib are along radiation having a rotation center of the cover with respect to the main body as a base point.

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