JP6768342B2 - lighting equipment - Google Patents

Description

The present invention relates to a mounting structure for attaching a light emitting unit to a light emitting unit in a lighting fixture including a main body of the fixture and a light emitting unit.

In recent years, as a lighting fixture to be installed on the ceiling, an LED lamp unit having approximately the same length as a straight tube type fluorescent lamp has been attracting attention instead of a light emitting unit using a straight tube type fluorescent lamp. It is becoming more widespread.

A lighting fixture using an LED lamp unit is composed of a fixture body (chassis) mounted on the ceiling and an LED lamp unit mounted on the fixture body. When installing such a lighting fixture, the fixture body is first fixed to the ceiling, and then the lamp unit is attached to the fixture body. The lamp unit is attached to the instrument body via an elastic fixture such as a leaf spring (see, for example, Patent Documents 1 to 3).

In such a lighting fixture, it is required to securely attach the lamp unit to the fixture body so that the lamp unit does not fall even if a large vibration is applied due to a large earthquake or the like. On the other hand, it is desired to make the on-site installation work as simple as possible. Furthermore, there is a demand for lower prices for lighting devices.

Japanese Unexamined Patent Publication No. 2014-220034 Japanese Unexamined Patent Publication No. 2015-162382 JP-A-2015-162365

According to the present invention, the lamp unit can be reliably attached to the fixture body via an elastic fixture, the installation work on site is easy, and the ceiling-mounted lighting can be manufactured at low cost. The purpose is to provide equipment.

According to a preferred embodiment of the present invention, a lighting fixture comprising an fixture body fixed to the lower surface of a structure, a light unit, and an elastic fixture for attaching the light unit to the fixture body. The fixture body has a plate-shaped upper wall that faces the light unit and is located directly above the light unit when the light unit is attached to the fixture body. When the fixture body is fixed to the lower surface of the structure, there is a space above the upper wall, and the elastic fixture is an upper portion and a lower portion made of an elastic plate-like body extending in the longitudinal direction of the light unit. The light unit has a side portion, the rear end portion of the upper portion and the rear end portion of the lower portion are connected to each other, the front end of the upper portion and the front end of the lower portion are free ends. An insertion opening for inserting the upper portion of the elastic fixture is formed in the upper wall of the instrument body, which is attached to the lower portion, and the upper portion is inserted through the insertion opening. , It can be inserted forward from the front end of the upper portion into the space above the upper wall, and faces the front end portion of the upper portion of the elastic fixture toward the rear end portion of the upper portion. A first formed of a folded portion of 1 and a hole or recess in which the tip of the first folded portion can be hooked at a position one distance forward from the insertion opening of the upper wall of the instrument body. A locking portion is formed, and by hooking the tip of the first folded-back portion on the first locking portion, the light unit is separated from the device main body and the device main body is passed through the elastic fixing tool. The light unit is supported on the upper portion by the elastic force of the elastic fixture when the upper portion is inserted into the space by a second distance larger than the first distance. A lighting fixture is provided in which the lower portion of the fixture is approached so that the light unit is pressed against the light receiving portion of the fixture body.

According to the above embodiment of the present invention, by utilizing the elastic fixture having the above-mentioned unique shape, a relatively large gap is left between the fixture body and the lamp unit when the upper portion is inserted shallowly into the space. The lamp unit can be hung from the fixture body, and the lamp unit can be pressed against the fixture body when the upper part is deeply inserted into the space. Therefore, the wiring work between the fixture body and the lamp unit can be easily performed, and finally the lamp unit can be firmly fixed to the fixture body.

It is a perspective view which shows typically the whole structure of the luminaire which concerns on one Embodiment of this invention. It is sectional drawing of the lighting fixture along the line II-II of FIG. 1 in the state which attached the light unit to the fixture body. It is the schematic sectional drawing of the luminaire along the line III-III of FIG. 1 in the state which attached the light unit to the fixture body. It is a top view which looked at the instrument body from the direction of arrow IV of FIG. It is a top view which shows the elastic attachment separated into the upper part and the lower part. It is a side view of the elastic attachment in a no-load state. It is an operation diagram which shows the process of attaching a light unit to a device body. It is an operation diagram which shows the process of attaching a light unit to an instrument body. It is an operation diagram which shows the process of attaching a light unit to an instrument body.

Embodiments of the invention will be described below with reference to the accompanying drawings.

The lighting fixture according to the present embodiment includes a lighting fixture main body (hereinafter referred to as “fitting main body”) 100, a light unit 200, and an elastic fixture 300 for fixing the light unit 200 to the fixture main body 100. ing. The appliance body 100 is a component attached to a downward surface of a structure such as the lower surface of the ceiling C, and is also called a chassis or the like. The light unit 200 is a component also called a light source module, a light source unit, or the like. In the present embodiment, the light unit 200 includes an LED light unit incorporating a large number of LED (Light Emitting Diode) elements as light emitting elements.

Hereinafter, in the present specification, for convenience of explanation, the longitudinal direction of the instrument main body 100 and the light unit 200 may be referred to as a front-rear direction, and the width direction may be referred to as a left-right direction.

The instrument body 100 is usually formed from a thin iron plate by processing using a press machine (punching, cutting, bending, etc.). As shown in FIG. 2, the instrument main body 100 has a substantially trapezoidal cross-sectional shape as a whole.

A recess 102 recessed upward is formed in the central portion of the instrument body 100 in the width direction (horizontal direction in FIG. 2). The light unit 200 is attached to the fixture body 100 so as to be fitted in the recess 102. The recess 102 is defined by an upper wall 104 and a pair of left and right side walls 106. The upper wall 104 faces the light unit 200 when the light unit 200 is attached to the fixture main body 100, and is located directly above the light unit 200.

Through holes (not shown) are formed in a plurality of places, for example, two places on the upper wall 104, and bolts 108a (for example, ceiling mounting bolts embedded in the field edge) and screws passed through the through holes. The fitting nut 108b (see FIG. 1) secures the appliance body 100 to the ceiling.

Upwardly convex protrusions 110 are formed at the four corners of the elongated rectangular upper wall 104. When the appliance main body 100 is fixed to the ceiling C by the bolts / nuts 108a and 108b, the protrusion 110 serves as a spacer, and the size corresponding to the height of the protrusion between the upper wall 104 and the ceiling C (for example). A gap 112 (with a height of 3 mm) is formed. That is, above the upper wall 104, there is a space (112) into which the upper portion 320 of the elastic fixture 300, which will be described later, can be inserted. At this time, the base portions 114 (see FIG. 2) at both the left and right ends of the appliance main body 100 come into contact with the lower surface of the ceiling C.

In particular, as shown in FIG. 2, the light unit 200 has a substantially semi-cylindrical cross section. When the light unit 200 is attached to the fixture body 100, the lower surface peripheral edge 130 of the fixture body 100 comes into contact with the upper surface peripheral edge of the light unit 200, whereby the central portion of the upper surface of the light unit 200 and the upper wall 104 of the fixture body 100 A gap 202 is formed between the two. In the gap 202, there are a power supply terminal block 116 provided on the lower surface of the upper wall 104, the bolts / nuts 108a and 108b described above, and an elastic fixture 300 described later.

Next, with reference to FIGS. 2 to 6, the parts of the elastic fixture 300 and the instrument body 100 related to the attachment of the light unit 200 will be described.

The elastic fixture 300 has an upper portion 320 and a lower portion 340. The upper portion 320 is a portion inserted into the gap 112 between the upper wall 104 and the ceiling C. The lower portion 340 is a portion that holds the light unit 200. The upper portion 320 and the lower portion 340 are made of an elastic plate-like body (elastic plate-like body). Both the upper portion 320 and the lower portion 340 can be formed of a steel plate for a spring such as stainless steel.

As an example, the plate thickness of the upper portion 320 is 0.6 mm, the plate thickness of the lower portion 340 is 0.8 mm, the total length of the elastic fixture 300 is about 10 to 12 cm, and the total width (maximum width) is about 3 cm. However, it is not limited to these numerical values.

In one preferred embodiment, the upper portion 320 and the lower portion 340 are formed separately, for example, by subjecting the spring steel plate to processing (spot welding, cutting, bending, etc.) using a press machine. Later, the rear ends of each are joined to each other by welding, for example spot welding (marked with a cross in FIG. 5).

When the elastic fixture 300 receives a load that changes the vertical distance between the front ends (free ends) of the upper portion 320 and the lower portion 340, it generates an elastic repulsive force that cancels the change in the distance. .. The elastic fixture 300 as a whole corresponds to a pine needle spring.

The front end of the upper portion 320 is a free end. In particular, as shown in FIG. 6, when no external force is applied to the elastic fixture 300, the upper portion 320 is gently curved so as to be convex upward from the front end to the rear end.

In particular, as shown in FIG. 5, the upper portion 320 has a wide rear portion 321 and a narrow front portion 322. At the front end of the front portion 322, a first folded portion 323 that faces the rear end of the upper portion 320 and extends substantially horizontally is formed. The first folded-back portion 323 can be formed by greatly bending the front end portion of the front portion 322 downward. In one preferred embodiment, the first folded portion 323 extends rearward, approximately horizontally.

A second folded-back portion 324 extending diagonally downward toward the rear end of the upper portion 320 is formed at the center portion in the width direction of the wide rear portion 321 in the substantially central portion in the front-rear direction of the upper portion 320. The second folded-back portion 324 can be formed by performing a cutting and bending process with a press machine.

A widening portion 342 is formed on the front side of the lower portion 340, and a through hole 344 for fixing the lower portion 340 to the light unit 200 is formed in the widening portion 342. As is clear from FIG. 5, the through hole 344 does not overlap with the upper portion 320 when the elastic fixture 300 is viewed from directly above. Therefore, when the screw 346 (see FIGS. 2 and 3) is passed through the through hole 344 and the screw 346 is tightened to the light unit 200, a tool such as a screwdriver does not interfere with the upper portion 320.

The lower portion 340 has a front end portion 348 (see FIG. 5) that is in front of the through hole 344, and the position of the through hole 344 is when the lower portion 340 supports the weight of the light unit 200. As a fulcrum, almost the entire lower surface of the front end portion 348 comes into surface contact with the upper surface of the light unit 200 and is pressed against the light unit 200. Therefore, the bending load applied to the screws 346 is reduced, and the number of screws 346 required to fix the lower portion 340 to the light unit 200 can be reduced. In the illustrated embodiment, the number of screws 346 used to fix one elastic fixture 300 to the light unit 200 is two.

The upper wall 104 is formed with an insertion opening 120 for inserting the upper portion 320 of the elastic fixture 300 into the gap 112 between the upper wall 104 and the ceiling C. The width (length in the left-right direction) of the insertion opening 120 is slightly larger than the width of the wide rear portion 321 of the upper portion 320.

The first folding portion 323 of the upper portion 320 is temporarily locked (here, hooked and fastened) slightly in front of the insertion opening 120 of the upper wall 104 (first distance, for example, about 2 to 5 mm forward). A first locking portion 122 is formed for this purpose. The width of the first locking portion 122 is slightly larger than the width of the tip of the first folded portion 323. The form of the first locking portion 122 is arbitrary as long as the tip of the first folded portion 323 can be hooked, but may be, for example, a slit (elongated punched hole) or an elongated recess, and is illustrated. In the embodiment, it is composed of slits.

A second locking portion 123 is formed further in front of the first locking portion 122. The second locking portion 123 may cause the light unit 200 to fall out of the fixture body 100 when the light unit 200 attempts to retract after the light unit 200 is properly attached to the fixture body 100 (this movement can result in the light unit 200 falling out of the fixture body 100). ), Engage with the second folded portion 324 of the upper portion 320 to prevent the light unit 200 from retreating further.

In the illustrated embodiment, the second locking portion 123 is formed by cutting and bending with a press machine, and includes a first inclined wall 124 on the proximal end side and a second inclined wall 125 on the distal end side. Has. As a result of forming the inclined walls 124 and 125, a hole 126 is formed in the upper portion 320. The first inclined wall 124 is formed with a slit 127 (elongated punched hole) having a width slightly larger than the width of the tip of the second folded-back portion 324. The tip of the second folded-back portion 324 can be engaged with the slit 127. The width of the slit 127 (length in the left-right direction) is slightly larger than the width of the second folded-back portion 324. Instead of the slit 127, an elongated recess (recess) may be formed in the first inclined wall 124.

In the present embodiment, the upper portion 320 can be manufactured by one press die in one press step except for the bending process for forming the first folded portion 323. The lower portion 340 can be manufactured in one press step with one press die. Further, the processing of the portion related to the upper portion 320 applied to the upper wall 104 can be performed by one press process with one press die, and moreover, a portion unrelated to the upper portion 320 is formed. It can be performed in one press process using the same press die as the press process of. Further, in the present embodiment, the total number of screws 346 used is four. That is, the elastic fixture 300 used in the present embodiment has a small total number of two, can be manufactured with a relatively small number of steps, and further, the elastic fixture 300 can be attached to the light unit 200. The number of parts and work man-hours for this are also small. Therefore, it is possible to suppress an increase in the cost of parts of the lighting device due to the use of the elastic fixture 300.

Next, a method of attaching the light unit 200 to the instrument main body 100 using the elastic fixture 300 will be described.

One elastic fixture 300 is attached to each of the front side and the rear side of the light unit 200 using screws 346. The elastic fixture 300 is usually attached at the manufacturing plant of the light unit 200, but may be attached at the site where the lighting fixture is installed.

First, the front end portion of the upper portion 320 of each elastic fixture 300 is inserted into the gap 112 between the upper wall 104 and the ceiling C through the insertion opening 120. At this time, the operator holds the front end portion of the upper portion 320 with a finger and pulls it upward, and with the upper portion 320 elastically deformed, inserts the front end portion of the upper portion 320 into the insertion opening 120. Next, the operator advances the light unit 200 while holding the light unit 200, thereby advancing the upper portion 320 within the gap 112.

When the tip of the first folded-back portion 323 advances to a position slightly forward of the first locking portion 122 and then retracts while pulling the light unit 200 downward, the first folded-back portion 323 becomes the first locking portion 122. Get caught in. After that, the state in which the worker releases his hand from the light unit 200 is shown in FIG. 7A.

At this time, since the weight of the light unit 200 is supported by the tip (front end) portion of the upper portion 320 far from the rear end portion of the elastic fixture 300, the front end of the upper portion 320 and the front end of the lower portion 340 The elastic fixture 300, particularly its upper portion 320, bends (elastically deforms) so that the members are largely separated from each other. As a result, a large gap is created between the fixture body 100 and the light unit 200. An operator who puts his or her hand in this large gap can easily connect the power cord 117 (see FIG. 1) extending from the power terminal block 116 to the light unit 200.

Next, as shown in FIG. 7B, by advancing the light unit 200, the upper portion 320 of each elastic fixture 300 is further pushed into the gap 112. At this time, since the upper portion 320 is inclined so that the front end side is higher, the front end portion of the upper portion 320 hits the ceiling C, but since the upper portion 320 is curved so as to be convex upward, the upper portion 320. The front end of the 320 will not be caught in the ceiling C and cannot move forward any further. The upper portion 320 moves forward while being guided by the ceiling C, and as the upper portion 320 moves forward, the upper portion 320 approaches a horizontal posture (posture shown in FIG. 7C) (details will be described later).

As the upper portion 320 moves forward, the second folded portion 324 is pressed against the upper wall 104 and bends. That is, the second folded-back portion 324 moves forward while being dragged in contact with the upper surface of the upper wall 104, but since the second folded-back portion 324 extends diagonally downward toward the rear, the second folded-back portion 324 is the upper wall 104. You will not be caught in and unable to move forward any further.

When the light unit 200 is further advanced and the upper portion 320 of each elastic fixture 300 is further pushed into the gap 112, the tip (rear end) of the second folded-back portion 324 corresponds to the second locking portion 123. Reach the position of hole 126. Then, the second folded-back portion 324 that was bent by releasing the load from the upper wall 104 that was in contact extends, and the tip of the second folded-back portion 324 enters the hole 126 (see FIGS. 3 and 7C). ).

At this time, the tip of the second folded portion 324 is located at substantially the same height as the slit 127 of the first inclined wall 124, but the tip of the second folded portion 324 may be inside the slit 127 or the slit. It may be away from 127. That is, when the light unit 200 is about to retract, the tip of the second folded-back portion 324 may engage with the slit 127 to prevent the light unit 200 from retracting.

After the upper portion 320 of the elastic fixture 300 is started to be inserted into the insertion opening 120 of the upper wall 104, it reaches the final position shown in FIG. 7C (the position where the upper portion 320 is inserted by a second distance, for example, about 9 to 10 cm). The front edge 121 (see FIGS. 3 and 4) of the insertion opening 120 contacts the upper portion 320 and serves as a support point to support the weight of the light unit 200 during most of the period. As the upper portion 320 advances in the gap 112, the length of the upper portion 320 behind the front edge 121 becomes smaller, so that the amount of deflection of the upper portion 320 due to the weight of the light unit 200 decreases. As a result, the shape of the upper portion 320 approaches the initial shape (shape in the no-load state) shown in FIG.

Therefore, with the above movement of the upper portion 320, the light unit 200 approaches the fixture body 100, and finally, as shown in FIGS. 2, 3 and 7C, the upper peripheral edge of the light unit 200 is the fixture. It comes into contact with the lower surface peripheral edge 130, which is the light receiving portion of the main body 100. Further, the side surfaces of the stoppers 204 in the form of protrusions provided at the four corners of the upper surface of the light unit 200 facing the front-rear direction abut or approach the stopper receiver 132 (the side surface of the lower surface peripheral edge 130) of the instrument body 100. In addition to being located at the position, the side surface of the stopper 204 facing the left-right direction comes into contact with or is located at a position close to the side wall 106 of the recess 102. Therefore, the horizontal displacement of the light unit 200 is prevented or suppressed by the stopper 204.

With the above, the attachment of the light unit 200 to the fixture main body 100 is completed.

According to the above embodiment, the light unit 200 can be easily attached to the fixture body 100 by simply moving the light unit 200 after inserting the upper portion 320 of the elastic fixture 300 into the gap 112 between the upper wall 104 and the ceiling C. Can be attached to.

Further, according to the above embodiment, the upper portion 320 is inserted into the insertion opening 120, the upper portion 320 is advanced by a small amount, and then the upper portion 320 is pulled back (retracted) so that the first folded portion 323 is first. It can be hooked on the locking portion 122, whereby the light unit 200 can be hung from the fixture body 100 at a relatively large distance from the fixture body 100. Therefore, the wiring work between the fixture main body 100 and the light unit 200 can be easily performed.

Further, according to the above embodiment, the upper portion 320 and the light unit 200 coupled to the upper portion 320 by the second folding portion 324 that engages with the second locking portion 123 after the light unit 200 is attached to the fixture body 100. Since the retreat is prevented, it is possible to prevent the light unit 200 from falling off from the fixture main body 100 even if a large vibration is applied due to an earthquake or the like.

However, the light unit 200 can be prevented from falling off from the fixture body 100 by engaging the light unit receiving portion 130 with the stopper. Further, when the light unit 200 is removed from the instrument main body 100, the engagement of the second locking portion 123 with the second folded portion 324 must be released. In order to disengage the light unit 200, it is necessary to pull the light unit 200 backward with a strong force while floating downward from the fixture body 100 to strongly pull out the upper portion 320.

When the light unit 200 is a long-life LED unit and there is almost no need to consider the replacement of the light unit 200, in order to more reliably prevent the light unit 200 from falling, the second section as shown in the figure. It is preferable to provide the stop portion 123 and the second folded portion 324.

If it is desired to improve the replacement workability of the light unit 200 as compared with the illustrated example, the slit 127 provided in the first inclined wall 124 of the second locking portion 123 may be changed to a recess, or the slit 127 may be abolished. 1 The surface of the inclined wall 124 may be a flat surface. When the surface of the first inclined wall 124 is made flat, the inclination angle of the first inclined wall 124 may be reduced (approached in the vertical direction). By doing so, when the upper portion 320 is retracted, the second folded-back portion 324 is not easily disengaged from the second locking portion 123, but the upper portion 320 is retracted with a weaker force than in the illustrated example. This makes it possible to separate the second folded-back portion 324 from the second locking portion 123.

If it is desired to further improve the replacement workability of the light unit 200, the prevention of the light unit 200 from falling off from the fixture body 100 is left to the stopper 204, and the second folded-back portion 324 and the second locking portion 123 are abolished. You may.

In the above description, it is assumed that the upper portion 320 is in contact with the ceiling C when the upper portion 320 advances in the gap 112, but the upper portion 320 may be separated from the ceiling C. After inserting the upper portion 320 into the gap 112 to some extent, the position of the screw 346 at which the lower portion 340 becomes the support point for supporting the weight of the light unit 200 is the front edge of the insertion opening 120 which becomes the support point of the upper portion 320. It will be located in front of 121. Therefore, due to the gravity acting on the light unit 200, a force acting to rotate the elastic fixture 300 in the direction of bringing the front end of the upper portion 320 closer to the upper wall 104 around the front edge 121, and this force acts on the upper portion 320. It increases as the insertion amount of is increased. If the length of the insertion opening 120 in the front-rear direction is sufficiently large, the rotation of the elastic fixture 300 is not hindered, so that the upper portion 320 does not necessarily have to come into contact with the ceiling C and receive a downward force from the ceiling C. .. Therefore, the gap 112 may be larger than the illustrated example.

C structure lower surface (ceiling), 100 ... appliance body, 104 ... upper wall, 110 ... protrusion, 112 ... space (gap), 120 ... insertion opening, 122 ... first locking part, 123 ... second locking part , 130 ... Light receiving part, 200 ... Light unit, 300 ... Elastic fixture, 320 ... Upper part, 323 ... First folded part, 324 ... Second folded part, 340 ... Lower part

Claims (5)

A lighting fixture provided with a fixture body fixed to the lower surface of a structure, a light unit, and an elastic fixture for attaching the light unit to the fixture body.
The fixture body has a plate-shaped upper wall that faces the light unit and is located directly above the light unit when the light unit is attached to the fixture body. When fixed to the lower surface of the structure, there is a space above the upper wall
The elastic fixture has an upper portion and a lower portion made of an elastic plate-like body extending in the longitudinal direction of the light unit, and the rear end portion of the upper portion and the rear end portion of the lower portion are connected to each other. The front end of the upper portion and the front end of the lower portion are free ends, and the light unit is attached to the lower portion.
An insertion opening for inserting the upper portion of the elastic fixture is formed in the upper wall of the instrument body, and the upper portion is inserted from the front end of the upper portion to the upper wall through the insertion opening. It can be inserted forward into the space above,
At the front end of the upper portion of the elastic fixture, a first folded portion facing the rear end of the upper portion is formed, and a first distance from the insertion opening of the upper wall of the instrument body. A first locking portion formed of a hole or a recess in which the tip of the first folded portion can be hooked is formed at a position only forward, and the tip of the first folded portion is used as the first locking portion. By hooking the light unit, it is possible to hang the light unit from the instrument body via the elastic fixture in a state of being separated from the instrument body.
When the upper portion is inserted into the space by a second distance larger than the first distance, the elastic force of the elastic fixture brings the lower portion that supports the light unit closer to the upper portion. A lighting fixture in which the light unit is pressed against a light receiving portion of the fixture body. A second folded portion is formed between the front end and the rear end of the upper portion, and the upper portion of the elastic fixture is inserted into the space by the second distance on the upper wall of the instrument body. The first aspect of claim 1, wherein a second locking portion is formed having an inclined wall that prevents or suppresses the upper portion from moving rearward, sometimes in contact with or in close proximity to the second folded portion. lighting equipment. The luminaire according to claim 2, wherein a hole or a recess that can engage with the tip of the second folded-back portion is formed in the inclined wall. The luminaire according to any one of claims 1 to 3, wherein the upper portion is curved so as to be convex upward. The space above the upper wall of the instrument body is a space between the upper wall and the lower surface of the structure, and the instrument body is formed with protrusions as spacers that determine the height of the space. The lighting equipment according to any one of claims 1 to 4.

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