JP5274306B2 - lighting equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of preventing a gap from being generated at contraction and preventing itself from contact to a frame body at expansion, as well as securing a large projection part. <P>SOLUTION: The luminaire 10 is provided with a frame body 21 in which a lamp tube 14 is housed in a body 11 from an opening 12 covered with a cover 16, and the cover can be attached to and detached from the opening 12, a resin panel 22 which transmits light of the lamp tube 14 to the frame body 21, and a press stopper 23 to prevent the resin panel 22 from being separated from the frame body 21. The cover 16 is provided with a double-sided adhesive sheet 32 to prevent the resin panel 22 from moving by holding the resin panel 22 to the frame body 21 at a place other than both ends 22b of the resin panel 22. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a lighting apparatus in which a lamp is housed from an opening in a main body, the opening is covered with a cover, and the cover includes a panel that transmits light from the lamp.

In the conventional lighting fixture, the lamp tube in the main body is accommodated, and the lamp tube is covered with a substantially rectangular cover. As shown in FIG. 12, the cover 100 includes a frame body 101 that is detachably attached to the opening of the main body, and a transparent resin panel 102 that transmits light from the lamp tube to the frame body 101.
The resin panel 102 is attached to the frame so that the pressing force (that is, external force) does not directly act on the panel itself.

Specifically, in order to prevent the resin panel 102 from moving in a direction parallel to the panel surface 102a, the wall portion 101a is raised from the frame body 101 so as to face the four sides of the substantially rectangular resin panel 102. ing.
As shown in FIG. 13, these wall portions 101 a are raised from the frame body at a predetermined interval L <b> 1 with respect to the four sides of the resin panel 102, and are formed so as to be able to contact the four sides of the resin panel 102.

On the other hand, in order to prevent the resin panel 102 from moving in the direction orthogonal to the panel surface 102a and coming off from the frame body 101, a plurality of pressings are applied to the back surface of the frame body 101 (specifically, the back surface of the wall portion 101a). A tool 104 is provided.
The plurality of pressers 104 are projected upward with a predetermined distance L2 with respect to the resin panel 102, and are formed so as to be able to contact the panel surface 102a (see, for example, Patent Document 1 and Patent Document 2). .

JP 2008-181809 A JP-A-9-180529

Here, since the resin panel 102 expands and contracts due to changes in the ambient environment temperature and humidity, the resin panel 102 and the frame 101 (specifically, the wall 101a) are in anticipation of the expansion and contraction of the resin panel 102. It is necessary to set the gap L1.
In particular, since the resin panel 102 is formed in a rectangular shape, expansion and contraction in the longitudinal direction increase, and the amount of dimensional expansion and contraction in the longitudinal direction increases.

For this reason, as shown in FIG. 14, the resin panel 102 is always “expanded panel length dimension” <“dimension between the wall portions of the frame”.
It is necessary to.
On the other hand, as shown in FIG. 15, when “expanded panel length dimension”> “dimension between frame wall portions”, both end sides 102 b of the expanded resin panel 102 contact the wall portion 101 a of the frame body 101. The resin panel 102 may be deformed into a curved shape.

By the way, in order to prevent the movement (displacement) of the resin panel 102 with respect to the frame body 101, when the resin panel 102 is held at one end, when the resin panel 102 contracts at a low temperature, as shown in FIG. The amount of contraction (that is, the amount of offset) of the free end portion 102a increases.
Therefore, a gap L3 is generated between the frame body 101 and the resin panel 102, and the inside of the lighting fixture can be visually observed from the gap L3, or light leakage occurs from the gap L3, which is not preferable in terms of design.

In order to solve this problem, it is conceivable to increase the panel riding allowance (frame width) W of the frame.
However, as shown in FIG. 17, when the panel riding allowance (frame width) W of the frame body 101 is increased, the translucent portion of the resin panel 102 is reduced, and the instrument efficiency is deteriorated.

  The object of the present invention has been made in view of the above-mentioned conventional problems, and can be held so as not to apply a large external force to the resin panel. It is another object of the present invention to provide a lighting apparatus that can prevent contact and, in addition, can ensure a large light projecting portion.

The present invention includes a main body having an opening, a lamp accommodated in the main body, a translucent panel that covers the opening, and a detachable attachment to the main body from the opening side. A pair of long wall portions extending in the longitudinal direction; a pair of short wall portions extending in the short direction; and a bottom portion of each of the pair of long wall portions and the pair of short wall portions. And a frame body having an inward projecting portion that is used to place the panel, and has a substantially L-shaped cross section, and is fixed to the pair of long wall portions. And a pair of pressing members that have a projecting portion projecting from the pair of longitudinal wall portions toward the panel, and that prevent the panel from being detached from the frame, and the pair of pressing tools. It is provided between the overhanging part and the panel and has elasticity , And a double-sided adhesive sheet as a holding means for distributing across the expansion and contraction of the panel as well as inhibit movement of the panel, the panel, the outer shape in plan view, a pair long sides and a pair A pair of long sides and each of the pair of long walls, and each of the pair of short sides and each of the pair of short sides. One adhesive surface of the double-sided adhesive sheet serving as the holding means is placed on the lining portion of the frame so that a gap is provided between each of the hand wall portions, and the pair of pressers It is bonded to the overhanging portion of the tool, and the other bonding surface is bonded to the central portion in the longitudinal direction of the panel .

In this invention, the holding means which hold | maintains a panel to a frame at places other than the both ends of a panel (namely, center part of the longitudinal direction of a panel) was provided.
By holding the panel at the center in the longitudinal direction, expansion and contraction in the longitudinal direction of the panel can be distributed to one end side and the other end side.

Therefore, it is possible to prevent the panel from being shifted, and it is not necessary to consider the expansion dimension of the panel with respect to the panel riding allowance (frame width) of the frame, and only consider the contraction dimension of the panel. It will be good.
Thereby, it becomes possible to suppress the panel boarding allowance (frame width) of a frame, and to secure a large light projection part and to improve instrument efficiency.

Furthermore, by holding the panel at the center in the longitudinal direction and distributing the expansion / contraction of the panel in the longitudinal direction to both ends, the amount of expansion at both ends of the panel can be kept small.
Thereby, while preventing a clearance gap between a panel and a frame body at the time of panel shrinkage | contraction, it can prevent that a panel contact | abuts to a frame body at the time of panel expansion.

In addition, by holding the panel at the center, it is possible to prevent the panel from moving (displaced) during transportation.
Accordingly, it is possible to prevent the panel from moving (displaced) in the frame body and coming into contact with the frame body and causing damage.

  Moreover, in this invention, a holding means can be made into a simple structure by forming a holding means using a pressing tool.

Furthermore, in the present invention, one adhesive surface of the double-sided adhesive sheet is adhered to the pressing tool, and the other adhesive surface of the double-sided adhesive sheet is adhered to the panel.
Since this double-sided adhesive sheet has elasticity, the position of the panel can be held while absorbing expansion and contraction of the panel without applying a large external force to the panel.

Moreover, in this invention, the recessed part or the convex part was provided in the panel in the longitudinal direction of the panel, and the fitting part which can be fitted in a recessed part or a convex part was provided in the pressing tool.
By fitting the concave portion or convex portion of the panel to the fitting portion of the presser, the position of the panel can be held while absorbing expansion and contraction of the panel without applying external force to the panel.

The disassembled perspective view which shows 1st Embodiment of the lighting fixture which concerns on this invention The longitudinal cross-sectional view which shows the lighting fixture of 1st Embodiment Cross-sectional view showing the lighting apparatus of the first embodiment The perspective view which shows the cover of 1st Embodiment. The side view which shows the state which attaches the cover of 1st Embodiment to a main body The side view which shows the state which attached the double-sided adhesive sheet of 1st Embodiment. The perspective view which shows the double-sided adhesive sheet of 1st Embodiment. The perspective view which shows 2nd Embodiment of the holding means which concerns on this invention. The disassembled perspective view which shows the holding means of 2nd Embodiment. The perspective view which shows 3rd Embodiment of the holding means which concerns on this invention. The disassembled perspective view which shows the holding means of 3rd Embodiment. A perspective view showing a conventional cover Sectional view showing a conventional cover Side view showing a state in which a conventional resin panel is expanded Side view showing a state in which a conventional resin panel is bent and deformed Side view showing a state in which a conventional resin panel is shrunk The side view which shows the state which ensured the frame width W of the conventional frame large largely

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
The lighting fixture 10 which concerns on 1st Embodiment is demonstrated.
As shown in FIGS. 1 to 3, the luminaire 10 includes a main body 11 in which a straight tubular lamp tube (lamp) 14 is accommodated from an opening 12, and the opening 12 is covered with a substantially rectangular cover 16. Yes.
The main body 11 is formed in a box shape, and an opening 12 is formed in a substantially rectangular shape in the lower part.

  As shown in FIG. 4, the cover 16 includes a substantially rectangular frame 21 that can be detachably attached to the opening 12, and a transparent resin panel that is provided on the frame 21 and transmits light from the lamp tube 14. (Panel) 22, a pressing member 23 that prevents the resin panel 22 from being detached from the frame body 21, and a locking projection 28 that holds the cover 16 on the main body 11.

The frame body 21 includes a pair of long wall portions 25 extending in the longitudinal direction, a pair of short wall portions 26 extending in the short direction, a pair of long wall portions 25 and a pair of short wall portions. An inner projecting portion 27 (see FIGS. 2 and 3) projecting inwardly is formed at the bottom of 26.
The frame body 21 is formed in a substantially rectangular frame shape with a pair of long wall portions 25 and a pair of short wall portions 26.

As shown in FIG. 2, a plurality of locking protrusions 28 are attached to the pair of long wall portions 25 with screws, and the plurality of locking protrusions 28 protrude upward from the pair of long wall portions 25.
As shown in FIGS. 5A and 5B, the frame body 21 is held in a state of being attached to the main body 11 by locking the plurality of locking protrusions 28 to the locking spring portion 29 of the main body 11. The
The locking spring portion 29 is formed of a leaf spring.

As shown in FIG. 6, the resin panel 22 is accommodated in the frame body 21 and placed on the overhanging portion 27.
The resin panel 22 is attached to the frame body 21 so that pressing force (that is, external force) does not directly act on the panel itself.
That is, as shown in FIG. 4, the resin panel 22 is formed in a substantially rectangular shape with a pair of long sides 22a and a pair of short sides (both ends) 22b.
The resin panel 22 has a pair of long sides 22a arranged at a predetermined interval with respect to the pair of long walls 25, and a pair of short sides 22b with respect to the pair of short walls 26 as shown in FIG. They are arranged at a predetermined interval S1.

A plurality of pressing members 23 are provided on the pair of long wall portions 25 with screws at a predetermined interval S2 above the resin panel 22 (in a direction perpendicular to the panel surface) (see also FIG. 2).
As shown in FIG. 7, the plurality of pressing members 23 are formed in a substantially L-shaped cross section, and the protruding portions 23 a are extended from the pair of longitudinal wall portions 25 toward the inside (that is, toward the resin panel 22). Has been issued.

Further, the locking protrusion 28 shown in FIG. 6 is also formed in a substantially L-shaped cross section, and the protruding portion 28 a is formed inward from the pair of long wall portions 25 at the base of the locking protrusion 28 in the same manner as the presser 23. It protrudes toward the resin panel 22 (that is, toward the resin panel 22).
Therefore, the resin panel 22 can be prevented from coming off from the frame body 21 with the plurality of pressers 23 (the overhanging portion 23a) and the plurality of locking projections 28 (the overhanging portion 28a).

As shown in FIGS. 6 and 7, the pressing member 23 is provided with a double-sided adhesive sheet (holding means) 32 that prevents the resin panel 22 from moving.
The double-sided adhesive sheet 32 is an elastic sheet and is interposed between the presser 23 (the overhang portion 23 a) and the resin panel 22.

In the double-sided adhesive sheet 32, one adhesive surface 32a is adhered to the presser 23, and the other adhesive surface 32b is other than the central portion 22c in the longitudinal direction of the resin panel 22 (that is, both ends (short sides) 22b of the resin panel 22). Are attached (held).
Specifically, the other bonding surface 32 b is bonded to the central portion 22 c in the longitudinal direction on the long side 22 a of the resin panel 22.

By holding the central portion 22 c in the longitudinal direction of the resin panel 22 with the double-sided adhesive sheet 32, the resin panel 22 can be prevented from moving in the longitudinal direction, the lateral direction, or the direction orthogonal to the panel 22.
Further, by supporting (forming) the double-sided adhesive sheet 32 using the presser 23, the holding means can be configured with a simple configuration of the double-sided adhesive sheet 32.

  As described above, according to the holding means (that is, the double-sided adhesive sheet) 32 according to the first embodiment, the resin panel 22 is held at the central portion 22c in the longitudinal direction, whereby the resin panel 22 is expanded and contracted in the longitudinal direction. Can be distributed to one end (short side) 22b side and the other end (short side) 22b side.

Therefore, it is possible to prevent the resin panel 22 from being offset, and it is not necessary to consider the expansion dimension of the resin panel 22 with respect to the panel ride-on allowance (frame width) of the frame body 21. Only the dimensions need to be considered.
Thereby, it becomes possible to suppress the panel boarding margin (frame width) of the frame 21 small, and it is possible to secure a large light projecting portion and improve the instrument efficiency.

Furthermore, by holding the resin panel 22 at the central portion 22c in the longitudinal direction and distributing the expansion / contraction in the longitudinal direction to both ends, the amount of expansion at both ends can be kept small.
Accordingly, it is possible to prevent a gap from being generated between the resin panel 22 and the frame body 21 when the panel is contracted, and to prevent the resin panel 22 from coming into contact with the frame body 21 when the panel is expanded.

In addition, by holding the resin panel 22 at the central portion 22c in the longitudinal direction, the resin panel 22 can be prevented from moving (displaced) during transportation or the like.
Accordingly, it is possible to prevent the resin panel 22 from moving (displaced) in the frame body 21 and coming into contact with the frame body 21 and causing damage.

  Next, a second embodiment to a third embodiment will be described with reference to FIGS. In addition, in 2nd Embodiment-3rd Embodiment, the same code | symbol is attached | subjected about the structural member similar to 1st Embodiment, and description is abbreviate | omitted.

(Second Embodiment)
A lighting apparatus 40 according to the second embodiment will be described.
As shown in FIGS. 8-9, the lighting fixture 40 is provided with the holding means 42 instead of the double-sided adhesive sheet 32, and the other structure is the same as that of the lighting fixture 10 of 1st Embodiment.

  In the holding means 42, a convex portion 43 is provided on the resin panel 22, and a through hole (fitting portion) 44 is provided on the presser 23.

The convex portion 43 protrudes (protrudes) upward from the central portion 22 c in the longitudinal direction (that is, toward the through hole 44) on the long side 22 a of the resin panel 22.
The through hole 44 is formed at a position facing the convex portion 43 in the pressing tool 23.
The through hole 44 is formed as a hole that is slightly larger than the outer shape of the convex portion 43 so that the convex portion 43 can be fitted therein.

Therefore, it is possible to prevent the resin panel 22 from moving in the longitudinal direction or the lateral direction without applying an external force to the resin panel 22 by fitting the convex portion 43 into the through hole 44.
In this way, by fitting the convex portion 43 of the resin panel 22 into the through hole 44, the resin panel 22 can be expanded and contracted in the longitudinal direction without applying an external force to one end (short side). ) 22b side and the other end (short side) 22b side.
That is, the position of the resin panel 22 can be held while absorbing expansion / contraction of the resin panel 22 without applying an external force to the resin panel 22.
Furthermore, it is possible to prevent the resin panel 22 from being detached from the frame body 21 by the presser 23.

  In addition, the lighting fixture 40 according to the second embodiment can obtain the same effects as the lighting fixture 10 according to the first embodiment.

(Third embodiment)
A lighting apparatus 50 according to the third embodiment will be described.
As shown in FIGS. 10-11, the lighting fixture 50 is provided with the holding means 52 instead of the double-sided adhesive sheet 32, and the other structure is the same as that of the lighting fixture 10 of 1st Embodiment.

  In the holding means 52, a notch 53 is provided in the resin panel 22, and a projecting piece (fitting portion) 54 is provided in the presser 23.

The notch 53 is formed in the central portion 22 c in the longitudinal direction on the long side 22 a of the resin panel 22.
The protruding piece 54 is formed to protrude toward the notch 53 at a position facing the notch 53 in the pressing tool 23.

Then, by fitting the notch 53 to the projecting piece 54, it is possible to prevent the resin panel 22 from moving in the longitudinal direction or the lateral direction without applying an external force to the resin panel 22.
Thus, by fitting the notch 53 of the resin panel 22 to the projecting piece 54, the expansion and contraction in the longitudinal direction of the resin panel 22 can be performed on one end (short side) without applying an external force to the resin panel 22. It can distribute to 22b side and the other edge part (short side) 22b side.
That is, the position of the resin panel 22 can be held while absorbing expansion / contraction of the resin panel 22 without applying an external force to the resin panel 22.
Furthermore, it is possible to prevent the resin panel 22 from being detached from the frame body 21 by the presser 23.

  In addition, the lighting fixture 50 according to the third embodiment can obtain the same effects as the lighting fixture 10 according to the first embodiment.

In addition, the lighting fixtures 10, 40, and 50 according to the present invention are not limited to the above-described embodiments, and can be appropriately changed and improved.
For example, the luminaire 10, the main body 11, the opening 12, the lamp tube 14, the cover 16, the resin panel 22, the presser 23, the double-sided adhesive sheet 32, and the holding means 42 and 52 shown in the first to third embodiments. The shapes and configurations of the convex portion 43, the through hole 44, the notch 53, the protruding piece 54, and the like are not limited to those illustrated, and can be appropriately changed.

10, 40, 50 Lighting equipment 11 Body 12 Opening 14 Lamp tube (lamp)
16 Cover 21 Frame 22 Resin Panel (Panel)
22b End of resin panel (both ends)
23 Presser 23a, 28a Overhang 32 Double-sided adhesive sheet (holding means)
42, 52 Holding means 43 Convex part 44 Through hole (fitting part)
53 Notch 54 Projection piece (fitting part)

Claims (1)

A body having an opening;
A lamp is housed in the body,
A translucent panel covering the opening ;
A pair of long wall portions that are attached to the main body so as to be detachable from the opening side, have a substantially rectangular shape, extend in the longitudinal direction, and a pair of short wall portions that extend in the short direction. A frame body having an inwardly projecting portion that is used to place the panel and projects inwardly at the bottom of each of the pair of long wall portions and the pair of short wall portions ;
The panel has a substantially L-shaped cross section, is fixed to the pair of long wall portions, and has a projecting portion that projects from the pair of long wall portions toward the panel. A pair of pressers that prevent the frame from coming off;
A double-sided adhesive sheet that is provided between the overhanging portion and the panel in the pair of pressers and has elasticity and prevents movement of the panel and serves as holding means that distributes expansion and contraction of the panel to both ends. When,
Equipped with a,
The outer shape of the panel in plan view is a substantially rectangular shape including a pair of long sides and a pair of short sides, and each of the pair of long sides and each of the pair of long wall portions An interval is provided between the pair of short sides and each of the pair of short walls so that an interval is provided between the pair of short walls and the flared portion of the frame,
One adhesive surface of the double-sided adhesive sheet as the holding means is adhered to the overhanging portion of the pair of pressing members, and the other adhesive surface is adhered to the center portion in the longitudinal direction of the panel. Characteristic lighting equipment.

Images