JP2007035607A - Adapter device for horizontal lighting duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a duct plug device mounted sideways and having high rigidity and reliability by minimum structural change and addition of exclusive parts in a built-in adapter for a luminaire attached to a lighting duct installed on an ordinary indoor wall surface with an opening part arranged sideways, and installed so that a light emitting part is protruded from the wall surface, and mainly illuminating a wall surface, a picture put on the wall surface and the like for sharing as a structure which is comfortable even hanged and used, and to realize a construction system preventing cost rise and considering harmony with a duct cover. <P>SOLUTION: A gap between an upper part of a lighting duct and an upper part of a duct plug case causing flexion deformity is reduced by reinforcing adaptors provided individually. A projection is formed in a top part of the duct plug case to provide a hook part. A tip end of the reinforcing adaptor secures rigidity in an inner deep part of a folded part of the lighting duct. For coupling of duct plug case and a connection arm of a main body part, a rotation flange part of an intermediate coupler is set as the maximum inner diameter of the duct plug case to enhance rigidity in fastening a face nut. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention attaches to an ordinary indoor wall surface with a lighting duct installed sideways, installs the light emitting part in a form protruding from the wall surface, and mainly irradiates the wall surface and paintings posted on the wall surface The present invention relates to a built-in adapter for lighting fixtures, etc., and relates to the configuration and structure of an adapter that reduces contact failure due to displacement deformation and bending deformation due to its own weight as much as possible, and its reinforcing aids.

  The adapter for the lighting duct is called a so-called duct plug, and is mainly incorporated in a lighting fixture such as a spotlight, and is often used as a built-in fixture. Hereinafter, it is referred to as a duct plug. Spotlight-type luminaires must be able to adjust the direction of irradiation due to their nature, and a joint that is integrated with a suspension arm is attached to the lower part of the duct plug, enabling approximately 360 degrees of rotation and sliding. It is said.

In recent years, there have been an increasing number of use cases in which a lighting duct is attached to a wall surface in a horizontal direction, and a hanging lighting fixture with a built-in duct plug is attached in a horizontal direction to illuminate a wall surface, a ceiling, or the like.
FIG. 1 shows a side view when a conventional duct plug built-in device is mounted sideways, which will be described below. In this case, sufficient strength can be secured in the luminaire main body 2 (for example, the lamp housing 2a or the lighting device housing), but the existing lighting duct 1 or the duct plug housing 3 having a limited shape and size can be used. Is an unexpected load.

  The main load on the lighting duct 1 and the duct plug housing 3 is a rotational torque load due to the weight of the arm 2c protruding sideways and the lighting fixture body 2 itself. The duct plug housing 3 is supported by the upper and lower hooking claws 3a and 3b hooked inside the opening folded portion 1b of the lighting duct 1 with the lower end 1a of the mounting face of the lighting duct 1 mounted sideways as a fulcrum. At this time, the vertical distance for supporting the rotational torque is generally less than the vertical dimension of the mounting surface of the lighting duct 1, the lower end portion 3c of the duct plug housing 3 receives a compressive load, and the upper catching claw 3b receives a tensile load. At the same time, the lower end 1a of the mounting surface of the lighting duct 1 receives the same compressive load.

  The lighting duct 1 and the duct plug housing 3 are relatively strong against compressive loads and have sufficient strength, depending on the structure and strength of the members. Moreover, the compressive load received by them can be directly transferred to the structure behind them, and deformation and the like are unlikely to occur unless the casing of the lighting duct 1 is buckled.

  On the other hand, the upper hooking claw 3b of the duct plug housing 3 receives a tensile load in a tearing direction from the duct plug housing 3 main body and the lighting duct upper edge 1c. The load at the base portion of the upper hooking claw 3b is exposed to a load several to ten times the weight of the instrument with a minimum vertical distance from the lower end 1a of the lighting duct mounting surface serving as a fulcrum. Similarly, the opening folded portion 1b of the lighting duct 1 is also pulled strongly from the upper hooking claw 3b and swells and deforms. In particular, when there is only one hooking claw, the load is concentrated and only the upper hooking claw 3b portion is greatly deformed.

  The lighting duct 1 is fixed to the structure at several places with wood screws or the like. However, the concentrated load is caused by the fact that the housing of the lighting duct 1 has elasticity, the position where the load is fixed and the position where the load is applied is separated. When added, the deformation becomes large. And the deformation | transformation has also caused the contact failure by deviating the positional relationship between the conductor 1d position in the lighting duct 1 and the contact piece 3d of the duct plug.

  As a countermeasure, there is a duct plug dedicated for sideways installation. They have a plurality of hooking claws with a rotation lever. As a matter of course, it became a small quantity exclusive product, the structure was complicated and it was generally expensive, and assembly work and construction work were complicated. The biggest drawback is that the structure depending on the strength of the hook with a narrow support width does not change, and as a result, it is an expensive dedicated part but lacks rigidity and lacks reliability.

  On the other hand, when the lighting duct is used in the horizontal direction, it is necessary to cover the opening portion in the horizontal direction with a cover or the like as well as the height of the lighting duct. Covers for this purpose need to fill the gap between the installed duct plugs, but it has been difficult to cut them into an arc shape in accordance with the duct plug casing 3 having a cylindrical structure as a basic structure. . When the covers were simply cut vertically, a gap was formed and the appearance was impaired.

  Also, at the joint between the duct plug housing 3 and the arm 2c of the luminaire main body 2, depending on the size of the fitting margin of the joint structure and the shape of the joint 2e, it bends downward and looks. It was getting worse. In general, the lower end of the duct plug housing 3 (on the side opposite to the wall surface in the case of sideways mounting) is provided with a connecting portion of the arm 2c serving as a hanging pipe, and this portion is also a portion that is bent during sideways mounting. . Although the coupling portion is tightened with the mounting portion of the duct plug main body and the decorative screw, the rigidity cannot be maintained because the flange diameter of the coupling tool 2e is small.

  In view of the problems in the previous section, we supply a highly rigid and reliable duct plug device that can be mounted sideways with minimal structural changes and the addition of dedicated parts. The challenge is to realize a construction system that prevents the rise and also considers harmony with the duct cover.

Means to solve the problem

  In the present invention, when the lighting duct 1 and the duct plug casing 3 are mounted sideways, it is noted that a strong tensile load is applied to both upper casing sections and that the duct cover must be mounted. . Then, attention was paid to the fact that the load was concentrated on the upper hooking claw 3b of the duct plug and the periphery thereof, and local deformation displacement occurred, resulting in poor contact and the like.

From the above, as a basic solution, the application of a load directly to the hooking claw of the duct plug is stopped, and the tension load is supported by a separate reinforcing aid.
FIG. 2 is a perspective external view of the duct plug device mounting structure according to the present invention from an oblique rear side.
Similarly, FIG. 3 is a perspective external view from obliquely below showing the mounting external appearance.
FIG. 4 is a perspective view with a partial cross section showing the structure of a duct plug according to the present invention.
Hereinafter, description will be given with reference to the drawings.

  Specifically, the present invention has a structure in which the opening folded portion 1 b of the lighting duct 1 and the uppermost portion of the duct plug housing 3 are pulled together by the reinforcing auxiliary tool 5. The load of the luminaire main body 2 is transmitted from the connected arm 2c to the duct plug casing 3 fastened by the decorative nut 13, and is transmitted to the reinforcing auxiliary tool 5 through the protrusion 3e provided at the uppermost portion of the casing. The reinforcing auxiliary tool 5 adopts a structure for transmitting to the opening folded portion 1b of the lighting duct 1 through a frame arm portion 5c extended to the outer periphery of the duct plug housing 3 and a large claw 5d at the tip.

  With this structure, the tension load is distributed to at least two places and transmitted to the lighting duct 1 and supported at the uppermost end of the duct plug housing 3, so that the vertical distance can be greatly increased, and the necessary tension load is reduced in inverse proportion. be able to. Dispersing the tension load application part in two places further increases dispersion in the lighting duct housing and increases the rigidity. Furthermore, the upper edge which is the weakest part of the front end of the opening folded part 1b of the lighting duct 1 is obtained by entering the front end of the large claw 5d of the reinforcing auxiliary tool 5 into the inner part of the opening folded part 1b of the lighting duct 1 and hooking it. 1c can be avoided and the rigidity can be increased.

  In addition, the reinforcing auxiliary tool 5 has a structure that can be temporarily fixed to the lighting duct 1 in advance, and the work of attaching a duct plug integral with the appliance can be performed by a procedure similar to the conventional procedure. This facilitates the construction of the duct cover 4. Further, a pretension to be attracted to the lighting duct side is given by the rotation operation when the duct plug is attached and the reinforcing auxiliary tool 5. This prevents the duct plug housing 3 from floating away from the lighting duct 1 in the actual mounting state.

The coupling between the duct plug housing 3 and the connecting arm 2c of the luminaire main body 2 is performed by setting the flange portion 11a of the rotary sliding tool 11 as an intermediate coupling tool to the inner maximum diameter of the duct plug housing 3, and a decorative nut. Stiffening when 13 is tightened is measured. Further, the maximization of the flange portion can be set so that the angle limiting device at the time of adjusting the irradiation angle becomes the maximum outer diameter, and the torque resistance is improved. Furthermore, a cylindrical space with an enlarged inner diameter can be secured in the central portion.

The invention's effect

  The greatest effect of the present invention is that a lighting fixture or the like incorporating a duct plug can be used even in a lateral orientation by simply adding the reinforcing aid 5. The duct plug housing 3 has a dedicated equipment for lateral mounting, but only the protrusion 3e provided at the uppermost portion in the vicinity of the mounting surface of the lighting duct 1. Since this protrusion 3e is added to the outermost casing of the duct plug body 6 and the duct plug lid 7 that constitute the existing substantially cylindrical shape, it is only necessary to perform cutting on the existing mold, and is inexpensive. Can be easily accommodated. With that alone, lighting fixtures can be made compatible with the hanging type and the side-mounted type.

  The protrusion 3e added to the substantially cylindrical duct plug housing 3 is a relatively inconspicuous part during actual use, and can be used without a sense of incongruity for vertical hanging applications. This eliminates the need for making duct plugs for sideways installation with a low absolute number of demands, and allows common use with the suspension type, which is a general application, reducing wasteful costs and increasing consumption with manufacturers. Benefits both parties.

  Furthermore, the hanging type lighting fixture incorporating the duct plug of the present invention can be changed to the sideways mounting at the minimum cost of adding the reinforcing auxiliary tool 5. This increases the degree of freedom of the illumination method in the illumination space, and can increase the degree of freedom of effect lighting.

  The only part for sideways mounting according to the present invention is only one point of the reinforcing aid 5. This requires only a single component made of reinforced synthetic resin for light loads, minimizing the cost of sideways mounting. Furthermore, for heavy loads, even if a metal reinforcing plate is bonded to the inside, it can be composed of two parts, and assembly can be easily performed by press-fitting or the like, thereby suppressing an increase in cost. In general, it can be mounted sideways at low cost.

  In terms of workability, the construction of the duct cover 4 becomes extremely easy. The reinforcement auxiliary tool 5 can be pre-constructed simultaneously with the installation of the duct cover 4 and does not require a tool. Further, even after the attachment, until the luminaire main body 2 is attached, the attachment position can be adjusted by freely moving on the lighting duct.

  Further, the length adjustment of the duct cover 4 can be dealt with only by a right-angle cutting process, and a conventional arc-shaped cutting process is not necessary, and the cutting process can be greatly simplified. Furthermore, since the long and short covers can be combined by vertical cutting, the end material can be used effectively and the position can be changed later. Furthermore, by standardizing the cut duct cover, the workability can be improved and the flexibility of layout changes can be expanded.

  The lateral mounting structure and apparatus according to the present invention applies a load to the casing structure of the lighting duct 1 and the duct plug main body 6 and the duct plug lid 7 which are the outer body of the duct plug casing 3 to support the tension load. With this structure, no load is applied to the electrical connection portion of the lighting duct 1 and the duct plug. Further, it is possible to hardly apply a load to the upper hooking claw 3b of the duct plug. Depending on the weight of the luminaire main body 2 and the length of the connecting arm 2c, it is possible to respond by increasing the strength of the reinforcing auxiliary tool 5 and the duct plug housing 3, and the internal connection parts are suspended duct plugs. Can be shared with

  The horizontal position where the large claws 5 d of the reinforcing auxiliary tool 5 are caught by the lighting duct 1 is outside the duct plug housing 3. Therefore, at least the load can be distributed in two places, and further, if the upper hooking claw 3b of the duct plug is included, it can be distributed in three places. Further, the large claw 5d passes a tension load to a highly rigid portion near the base of the opening folded portion 1b of the lighting duct 1. On the other hand, since the lighting duct 1 absorbs the load at at least two places where high rigidity can be expected, the load can be widely distributed and local deformation hardly occurs. As a result, rigidity is increased, deformation can be suppressed, and electrical contact is stabilized.

  The rotating sliding tool 11 and the sliding rotor 12 expanded to the maximum diameter inside the duct plug housing 3 improve the durability of the movable limit stopper function at the time of adjusting the irradiation angle, and the space in the center is wired in the instrument. It is a valuable space when routing 2d. The in-instrument wiring 2d can be smoothly bent, and the assembling work is facilitated.

  Since the rotary sliding tool 11 that reciprocates about 300 degrees is covered with the sliding rotor 12 that reciprocates about 90 degrees, the in-instrument wiring 2d is resistant to movement during adjustment of the large irradiation angle. Protected. Moreover, the resin-made sliding rotor 12 also functions as a protective member for the in-instrument wiring 2d with respect to the metallic rotary sliding tool 11.

  By making the sliding rotor 12 substantially S-shaped, a stopper structure for the duct plug housing 3 and a stopper structure for the rotary sliding tool 11 directly connected to the luminaire main body 2 can be installed on both upper and lower sides. A thin and compact structure was realized. In addition, it is possible to support the catching part with two or more three-dimensional surfaces by bending it up and down, and it is possible to convert from a conventional bending-resistant structure to a shearing-resistant structure, thereby greatly improving the durability. it can.

  The present invention attaches to a lighting duct having an opening on a wall sideways by using a duct plug for a built-in appliance, and supports the lamp housing portion with a support arm that extends a certain distance horizontally from the duct plug. The present invention is applied to a lighting device that mainly illuminates a wall surface or a ceiling surface.

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 5 and 6 are exploded perspective views seen from above and below, with partial cross-sections for explaining the structure corresponding to sideways mounting.

  The mounting method and shape of the duct plug in the present invention are limited to a substantially cylindrical shape in which the entire duct plug is rotated and attached by 90 degrees because of its structure. In other structures, the reinforcing auxiliary tool has an irregular shape and becomes unnecessarily large, while the rigidity strength is lowered and is not practical. In the case of a shape other than the substantially cylindrical shape, it can be embodied as a structure in which the reinforcing auxiliary tool 5 is slid in the lateral direction, but a space for sliding is required or the construction procedure with the duct cover 4 is complicated. And waste such as an increase in parts for the sliding structure occurs.

  Further, the detailed description of the present invention includes the shape of the conductor 1d and the insulator 1e in the lighting duct 1, the contact piece 3d in the duct plug housing, the adapter terminal 8, the ground terminal 9, the terminal cover 10 covering them, and other appliances. The connection terminal structure is not described, but the present invention can be applied regardless of the structure. Further, the connection structure or the like may be a conventional connection terminal structure or a simple quick connection type as illustrated in the present invention. The reason is that, due to the structure of the present invention, a load is applied only to the outer shell of the duct plug housing 3, and no load is applied to the hooking claws 3a and internal connection parts.

  As shown in FIG. 1, when the lighting duct and duct plug originally suspended in the vertical direction are mounted sideways, the lighting fixture main body 2 protruding sideways is narrowed between the lighting duct 1 and the duct plug housing 3. It must be supported by the mounting surface. In particular, a structure that makes the best use of the vertical distance of the mounting surface is effective, and the present invention is embodied as shown in FIG. A structure in which the upper part is drawn by the reinforcing auxiliary tool 5 is adopted.

  The reinforcement assisting tool 5 needs a corresponding strength to cope with the rotational torque load generated due to the weight of the lighting fixture body 2 and the length of the connecting arm 2. The tensile load received by the reinforcement assisting tool 5 to support the rotational torque load is determined by the shape of the duct plug housing 3 and the width dimension of the lighting duct 1. That is, the vertical distance from the lower end portion 1a of the mounting surface of the lighting duct 1 or the lower end portion 3c of the duct plug housing 3 in actual use as a fulcrum to the position of the protrusion 3e provided at the uppermost portion of the duct plug housing 3 Determined. The tension load applied to the reinforcing auxiliary tool 5 can be reduced by increasing the vertical distance. For embedded lighting ducts, it is possible to lower the fulcrum by projecting the lower side of the duct plug housing to increase the vertical distance, but in the case of exposed lighting ducts, the shape becomes complicated and realistic. Absent. In addition, the appearance is deteriorated.

In order to maximize the vertical distance, a protrusion 3e is provided at the uppermost position of the duct plug housing 3. This is provided as protrusions 6a and 7a at portions corresponding to the uppermost portions of both the duct plug main body 6 and the duct plug lid 7 which are divided into two in terms of the assembly structure. When manufactured by injection molding of synthetic resin, it can be realized by cutting the mold and does not require a large-scale structural change.
In addition, there is no problem even when the vertical suspension is used, and it can be used as a combined type. In order to improve the strength of the outer casing as necessary, it is only necessary to examine and implement a molding material and a reinforcing structure.

  FIG. 7 is a perspective view of the front and back surfaces showing the structure and shape of the reinforcing auxiliary tool 5. The reinforcement assisting tool 5 is a single part, but is roughly divided into three parts. An upper frame 5a having a hook portion 5b for hooking the protrusion 3e of the duct plug housing 3, a frame arm portion 5c having a large claw 5d hooked to the opening folded portion 1b of the lighting duct 1 at the tip, and a temporary fixing It comprises an attachment base portion 5e that is provided with a small claw 5f and a hole for accommodating the duct plug housing 3 in the approximate center, and that can be connected to the duct cover. When viewed from the front, a round hole is formed in which the duct plug housing 3 is accommodated, and when viewed from the side, it is double-folded into a “<” shape.

  The hook portion 5b is provided in an arc shape so as to be in close contact with the outer shell of the duct plug housing 3. The upper frame portion 5a that supports the hook portion 5b and the large claws 5d of the frame arm portion 5c that transmits the load to the lighting duct 1 are connected at the shortest distance, and are arranged in parallel and linearly with the direction of applying the load substantially. The purpose is to prevent the occurrence of bending and bending and improve rigidity. The large claws 5d are inserted at an oblique angle from the opening of the lighting duct 1 and then move upward while rotating in the attached state. Due to this action, the large claws 5d adopt a structure that transmits a load to a portion near the base of the opening folded portion 1b of the lighting duct 1 to minimize deformation.

FIG. 8 is a perspective view showing a fitting state of the lighting duct and the reinforcing auxiliary tool. However, the lighting duct is not shown for easy viewing.
The mounting base portion 5e is designed so that the duct plug can be attached and detached in the same procedure as in the prior art. Since the added protrusion 3e also rotates 90 degrees at the time of attachment, a recess 5g and an arcuate guide 5m following the recess 5g are provided so as to avoid the insertion space and the movable range of the protrusion 3e. Further, the frame arm portion 5c extending obliquely is also provided with a notch portion 5h so as not to hinder the rotation of the projection portion 3e. When the rotation angle is 90 degrees and the normal mounting angle is reached, the protruding portion 3 e enters the back side of the hook portion 5 b and is pulled back to the lighting duct side, and the duct plug housing 3 comes into close contact with the lighting duct 1.

  The degree of fitting between the duct plug housing 3 and the reinforcing auxiliary tool 5 and the degree of application of the preliminary tension are determined by the shape and size of the protrusion 3e, the setting of the guide inclination of the hooking part 5b of the reinforcing auxiliary tool 5, and the large claws 5d. It can be adjusted by setting the shape and reinforcing rib. If further strength is required, the reinforcing metal fitting 14 may be incorporated inside the frame arm portion 5c including the upper frame 5a and the large claws 5d.

  The reinforcing aid 5 can be attached to the lighting duct 1 alone and in advance. The mounting base portion 5e has a structure in which both sides are cut off vertically, and the cross-sectional shape and hue are also matched to the duct cover 4. Furthermore, when the mounting base portion 5e is larger than the duct cover 4, a vertical straight line portion 5j that matches the vertical dimension of the duct cover 4 is provided so that at least a lower portion does not have a step or the like. These facilitate the length adjustment of the duct cover 4 and enable right-angle cutting.

  In order to prevent the connecting arm 2c and the duct plug housing 3 from hanging from the luminaire main body 2 including the lighting device housing, a male screw 11d is provided on the outer periphery of the rotary sliding tool 11 to which the connecting arm 2c is fixed. A method of increasing rigidity by tightening the duct plug housing 3 with the decorative nut 13 having the female thread portion 13a to be fitted is employed. This method is indispensable for sideways mounting and is not a dedicated means, but it can also be used for vertical suspension, and the effect is enhanced when used in combination with the reinforcing auxiliary tool 5 of the present invention.

  The in-appliance wiring 2d drawn from the arm 2c attached to the luminaire main body 2 passes through the decorative nut 13 and the rotary sliding tool 11. The arm 2c is fixed and integrated with a push screw or the like protruding from the rotary sliding tool 11. Then, the in-instrument wiring 2d is connected to a predetermined terminal or connection portion after passing through the in-apparatus wiring 2d through the sliding rotor 12 that restricts the adjustment rotation angle in order to prevent twisting of the in-appliance wiring 2d. Thereafter, the rotary sliding tool 11 is combined with the sliding rotor 12 and inserted into the rotating mechanism housing 6 b of the duct plug body 6. After arranging the extra in-apparatus wiring 2d with the clip portion 10a of the terminal cover 10, etc., the duct plug lid 7 is tightened with an assembly screw, so that the in-apparatus wiring 2d is pressed by the wiring pressing plate 7d, and the lighting fixture is connected to the connecting portion The movement of the main body 2 when adjusting the irradiation angle is not transmitted.

  FIG. 9 is a perspective view with a partial cross section showing the structure of the sliding rotor 12 for limiting the rotation. The center of the sliding rotor 12 is formed in a cylindrical shape to form a center fitting portion 12 a and fits in the storage portion 11 b of the rotary sliding tool 11. This is for reliably receiving the torque at the time of preventing over-rotation when adjusting the angle of the lamp housing portion 2a and preventing the occurrence of unnecessary eccentric load by coaxial alignment. The flange portion 11 a of the rotary sliding tool 11 earns a vertical distance as the maximum diameter that can be set inside the duct plug housing 3, and improves rigidity when the decorative nut 13 is tightened. Further, a rib or the like constituting a stopper function for restricting the rotation of the lamp housing 2a is set at a position where the maximum outer diameter is as much as possible to improve the torque resistance performance. Further, the rib installation structure is set at each corner of the housing and the parts that rotate and slide, and is configured to increase the strength by supporting it at two sides or more than two directions.

  Specifically, the cross section of the sliding rotor 12 has a substantially S-shape. The flange expanded from the cylindrical center fitting portion 12a constitutes an upper arcuate surface 12b and a lower flange 12d lowered by one step. The lower flange 12d extends to the maximum possible outer diameter in the same manner as the rotary sliding tool 11. The sliding rotor 12 incorporates a rotation limiting structure by utilizing both upper and lower sides bent in a substantially S shape. A rotor rib 12e is provided on the upper surface of the lower flange, and a C-shaped groove 12c is provided in the lower surface of the upper arc surface 12b. The rotor rib 12e is connected to the lower surface flange 12d and the upper circular arc surface 12b, and is caught by the rotation preventing ribs 6c and 7c of the duct plug body 6 and the lid 7. The pin receiver 12f of the uncut portion of the C-shaped groove 12c functions as a stopper for receiving the movable limit pin 11c provided on the rotary sliding tool 11.

  The sliding rotor 12 performs reciprocating rotational sliding of about 90 degrees with respect to the duct plug housing 3, and allows reciprocating rotational sliding of about 300 degrees with respect to the rotating sliding tool 11. By this combination, the luminaire lamp body 2 can adjust the irradiation direction of 360 degrees or more with respect to the duct plug housing 3. In addition, the ribs that make up these stopper functions are shaped to match the mating ribs and curved surfaces of each other, and as much as possible, switching from load support by bending stress to load support by shearing stress improves strength is doing.

In the lateral mounting, a rotational load is applied to the duct plug housing 3 and the lighting duct due to the eccentric load of the lighting fixture body 2 around the rotation axis of the duct plug. This is not a problem at the time of vertical suspension, but in the case of horizontal installation, it leads to a problem that the irradiation direction changes due to the weight of the instrument. For this reason, in the horizontal mounting, it is required not to move after the decorative nut is tightened.
On the other hand, at the time of hanging vertically, it is desired to move smoothly with a certain operating force or more for adjusting the irradiation direction. In that case, in order to prevent loosening and smooth sliding by the adjustment movable operation, it can be realized by adding a resin washer between the duct plug housing 3 and the decorative nut 13.

FIG. 2 is a perspective view showing a mounting structure of a duct plug portion when a spotlight using a relatively small incandescent bulb as a light source is mounted sideways. In this case, since the lighting fixture lamp body part 2 is finished in a small size and light weight, the reinforcing auxiliary tool 5 is finished with an integral structure made of reinforced resin. In this shape, the lighting duct 1 can be temporarily fixed using the inclination of the frame arm.
FIG. 10 illustrates the attachment procedure. The inclination of the frame arm portion 5 c is useful for inserting the large claw 5 d into the back of the opening folded portion 1 b of the lighting duct 1.

Depending on the size of the duct plug, there may be a gap between the upper end of the reinforcing auxiliary tool 5 and the duct cover 4. When the gap is not possible, a structure in which a self hinge part 5k is provided at the center of the attachment base part 5e and the upper half is horizontally moved as shown in FIG.
FIG. 12 illustrates the attachment procedure. In this case, the entire upper frame 5a completely covers the protrusion 3e of the duct plug housing 3 and its movable range. On the other hand, the covered part effectively functions as an effective reinforcing member.

  FIG. 13 shows an example in which a reinforcing metal fitting 14 is built inside the reinforcing auxiliary tool 5 to increase the strength. In recent years, there has been an increase in lighting fixtures using high-efficiency HID lamps with small and small outputs. An electronic ballast is indispensable for an HID lamp, and although it has been reduced in size and weight, it has a corresponding weight. When these lighting fixtures are mounted sideways, a large tensile load is applied to the reinforcing auxiliary tool 5 due to the influence of rotational torque. In that case, the occurrence of a creep phenomenon due to the product of temperature, load, and accumulated time can be considered, which can cause drooping.

  In order to prevent this, a structure in which the reinforcing metal fitting 14 is incorporated in the reinforcing auxiliary tool 5 is taken as a measure against high loads. What is necessary is just to reinforce between the protrusion part 3e of the duct plug housing | casing 3 from the opening folding | turning part 1b of the lighting duct 1 from the structure of the reinforcement auxiliary tool 5. FIG. Specifically, the inside of the resin-made reinforcing auxiliary tool 5 is cut into a depth equal to or greater than the material thickness of the reinforcing metal fitting 14 to create a storage space. The fixing method is partially press-fitted and hooked. In this case, the reinforcing metal fitting 14 receives most of the load, and the resin-made reinforcing auxiliary tool 5 is responsible for reinforcing the insulation with respect to the conductor 1d in the lighting duct 1, maintaining the appearance, and temporarily fixing.

  The reinforcing auxiliary tool 5 and the reinforcing metal fitting 14 do not need to be completely in close contact with each other, but may be partially press-fitted in close contact. Moreover, in order to avoid the fractured surface edge generated at the time of processing of the metal fitting, when it is necessary to completely coat with resin or the like, a structure such as insert molding or a resin outer shell in the middle can be considered. In any case, at the construction site, it is only necessary to prepare the reinforcing auxiliary tool 5 standardized according to the outer diameter of the duct plug, and no special construction is required.

  Further, the shape of the reinforcing auxiliary tool 5 and the reinforcing metal fitting 14 can be three-dimensionally shaped so as to be in close contact with the duct plug housing 3, depending on the application, the type of material, and the required strength. Various changes and their applications can be implemented.

    It is a side view which shows the case where the instrument of the conventional duct plug incorporation is attached sideways.     It is a perspective view from diagonally backward which shows the attachment structure of the duct plug by this invention.     It is a perspective appearance figure from the slanting bottom which shows the mounting appearance of the duct plug by this invention.     It is the perspective view which gave the partial cross section which shows the structure of the duct plug by this invention.     It is the lower side disassembled perspective view which gave the partial cross section which shows the structure of the duct plug by this invention.     It is the upper side disassembled perspective view which gave the partial cross section which shows the structure of the duct plug by this invention.     It is a perspective view of the front and back two surfaces which show the structure of the reinforcement auxiliary tool by this invention.     It is a perspective view which shows the fitting fitting state to the duct of a duct plug, and a reinforcement auxiliary tool.     It is the disassembled perspective view which carried out the partial cross section which shows the rotation limiting structure by this invention.     It is a side view which shows the temporary fixing construction procedure of the reinforcement auxiliary tool by this invention.     It is a perspective view of the front and back two surfaces which show the reinforcement auxiliary tool by another application example of this invention.     It is a side view which shows the temporary attachment construction procedure of the reinforcement auxiliary tool by another application example of this invention.     It is an exploded perspective view of two front and back surfaces showing a structure in which a reinforcing metal fitting is incorporated into a reinforcing auxiliary tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting duct 1a Mounting surface lower end 1b Opening folding | returning part 1c Upper edge 1d Conductor 1e Insulator 2 Lighting fixture main-body part 2a Lamp accommodating part 2c Arm 2d In-apparatus wiring 2e Joiner 3 Duct plug housing | casing 3a Hook nail 3b 3c Case lower end portion 3d Contact piece 3e Projection portion 4 Duct cover 4a Mounting claw 5 Reinforcement assisting tool 5a Upper frame 5b Hooking portion 5c Frame arm portion 5d Large claw 5e Mounting base portion 5f Small claw 5g Recessed portion 5j Notch portion 5j Vertical straight portion 5k Self-hinge part 5m Guide part 6 Duct plug main body 6a Projection 6b Rotation mechanism storage part 6c Rotation stop rib 6d Assembly boss 7 Duct plug lid 7a Projection 7b Rotation mechanism storage part 7c Rotation stop rib 7d Wiring holding plate 8 Adapter terminal 9 Grounding Terminal 10 Terminal cover 10a Clip part 11 Rotating sliding tool 11a Flange part 11b Sliding Trochanter housing portion 11c Movable limit pin 11d Male thread portion 12 Sliding rotor 12a Center fitting portion 12b Upper arc surface 12c C-shaped groove 12d Lower flange 12e Rotor rib 12f Pin receiver 13 Cosmetic nut 13a Female thread portion 13b Knurled portion 14 Reinforcement Hardware 14a Upper frame 14b Hook 14c Frame arm 14d Large claw

Claims (5)

In lighting fixtures that are attached to commercial power supply lighting ducts that are mounted on indoor walls with the openings facing sideways using duct plugs, which are adapters for built-in fixtures, and that illuminate the walls, etc. while maintaining a predetermined distance. The hanging part and the lighting duct provided on the outer part of the duct plug casing that becomes the uppermost part and the proximity part of the lighting duct in the actual use. It consists of a reinforcing device that exerts the effect of pulling the upper opening folded part to each other and pulling it up, and the rotational torque load due to the product of the weight of the luminaire body and the protruding arm length is applied to the housing of the lighting duct or duct plug. Supported by compressive load on the lower end and tensile load on the reinforcement device, electrical contact and mechanical holding of the duct plug Hooking claw portion duct plug and sideways mounting reinforcement device is an instrument built adapter, characterized in that it has a structure which does not give a direct load applied by sideways attached to.   A projection is provided on a part of the outer casing that is the uppermost part in close proximity to the lighting duct in actual use to form a hook structure for the sideways mounting reinforcement device, and fitted into the reinforcement device by a 90-degree rotation operation during installation. The duct plug as an adapter for a built-in appliance according to claim 1, wherein the duct plug is caught together.   An inclined surface for hooking the projection of the duct plug by hooking it to the circular arc portion that is in close contact with the outer shell of the substantially cylindrical duct plug housing, and for giving pre-tension in the guide and anti-load direction to the part where the projection slides Alternatively, a curved surface is provided, and the tip of the arm part inclined and extended on both sides of the duct plug housing is embedded in the inner side of the lighting duct opening fold to disperse the load in two places and the lighting duct opening fold The lateral mounting reinforcing device according to claim 1, wherein the device has a shape and a structure that applies a load to the root portion as much as possible to reduce deformation of the lighting duct housing.   In the rotation mechanism for adjusting the irradiation direction angle during actual use, the flange outer diameter that is inserted into the duct plug of the coupling component that rotates integrally with the instrument body and slides and rotates is approximately the maximum inner diameter of the duct plug. At the same time, the duct plug casing lower part outer shell is tightened with a decorative nut combined with the male thread part provided on the outside of the coupling part, and the duct plug casing and the instrument main body part are formed as a substantially integrated rigid body and mounted sideways. The adapter or duct plug for incorporating an instrument according to claim 1, wherein bending at the time is reduced.   In the angle limiting device for adjusting the irradiation angle in actual use, the projections of the duct plug housing and the coupling component that rotates and slides above and below the S-shaped rotating body having a substantially S-shaped outer diameter whose outer diameter is approximately the maximum inner diameter of the duct plug. A structure that supports a rotation-limiting load on at least two sides or surfaces by providing a sliding movable portion that repeatedly repeats and a latching portion that abuts the protrusion, and connecting each side of the latching portion to each of the S-shaped sides and corners. The adapter or duct plug for appliances according to claim 1 or 4, characterized by the above.

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