JP2006202713A - Suspended luminaire for lighting duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire allowing a suspended lamp body or the like to be adjusted in an arbitrary direction by mounting it to a lighting duct. <P>SOLUTION: By focusing attention on a rotation shaft becoming a center in horizontal rotation by suspending a movable lamp body or the like, the rotation shaft is made to penetrate the inside of a fixed side casing and supported by bearings at two upper and lower parts of the casing, and thereby a connector structure provided with the rotation shaft and a contact terminal structure around it is composed. A vertical load of the lamp body or the like is formed into a structure hooked to a lower part of the fixed side casing through a mounting member by expanding a part of the rotation shaft. As the rotation shaft, the rotation shaft for extension molded by an insulation material is inserted into a metallic suspension pipe and is integrated with it by keeping rigidity; annular terminals are formed on the upper and lower sides of the surface thereof; and bearing structure parts are composed at a tip and a pipe insertion opening part. In the fixed side casing, the connector structure is formed by vertically stacking fixed contacts having a plurality of contact pieces per poles facing each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a lighting fixture with a built-in adapter, which is used by being attached to a lighting duct arranged on a normal indoor ceiling, a fixed-side housing fixed to the lighting duct, a horizontal direction of about 350 °, and about 90 °. It is related with the spotlight type lighting fixture provided with the movable lamp body which can adjust the angle of the vertical direction.

There are roughly two types of spotlight-type lighting fixtures for lighting ducts.
One was to attach a metal pipe or arm extending from the movable lamp directly to the adapter and wire the pipe inside or along the arm. In this case, commercial power is supplied to the lamp socket or lighting unit of the movable lamp as it is.
The other is a case where the movable lamp body is supplied via a power supply unit such as an electronic step-down transformer or a lighting unit. In this case, the built-in adapter formed in a part of the casing is attached to the lighting duct, is input to the electronic board unit via a lead wire, and the output is again supplied to the movable lamp body via the lead wire.

In either case, the horizontal rotation angle is limited to about 350 ° because the lead wire to the movable lamp may be twisted. These mounting structures and angle restrictions are concentrated on the bottom surface of the adapter housing and the mounting hole portion on the bottom surface of the electronic unit housing.
In this structure, there is a contradiction that a smooth rotation operation cannot be obtained while it is necessary to tighten firmly to prevent tilting due to the eccentricity of the movable lamp body and to limit the rotation angle. In addition, there is an example in which a double stopper structure is adopted in order to eliminate the blind spot in the irradiation range, but metal washer and lubricating sheets have been further increased. Even so, for the slight angle adjustment beyond the stopper angle, the adjustment difficulty and inconvenience of having to swing in the opposite direction remained.

  Furthermore, in the manufacturing process of lighting fixtures with built-in electronic units, it is necessary to carry out wiring work to electronic boards, etc. in a narrow unit housing, which makes assembly work difficult as the overall size of the fixtures becomes smaller. It was. In addition, the electronic unit casing portion and the movable lamp body portion are handled as one body, and the movable lamp body is assembled while being dragged. In addition, inventory management is performed on the integrated finished product after assembling, and it has become a burden to respond to other varieties in preparation for customer requests.

In an electronic unit housing or the like, a detachable stopper is often incorporated at the other end of the adapter unit. In some cases, hooks called hooks are provided to prevent sagging due to their own weight.
In order to release the attachment / detachment stopper, the operation button is pushed down. However, the operation button has to be pushed down in the center direction, which is unexpectedly difficult.

  The problem to be solved is that it simplifies difficult wiring and assembly work in the unit case of the fixed side housing with built-in adapter, improves assembly workability, and facilitates production and inventory management. And to reduce product inventory.

  Next, the mounting structure of the rotating shaft of the movable lamp body provided on the lower surface of the fixed housing is simplified, and the delicate tightening adjustment work such as nuts is abolished. Make the movable structure concrete.

  Furthermore, the attachment / detachment operation to the lighting duct is facilitated. At the time of attachment, only the fixed side casing is rotated, and the release button reduces the operating force of the release button. The goal is to be able to be operated with one hand for both attachment and detachment operations.

Means to solve the problem

  In order to solve the problem, the present invention adopts a connector structure that can be continuously rotated at the output side contact point in order to separate the adapter or the fixed side housing containing the adapter and the movable lamp body. By adopting this connector structure, it is possible to separate the movable lamp body from the fixed side housing that houses the adapter or the electronic unit that houses the electronic unit, etc., and is freed from the limitation of the rotation direction and angle in the horizontal adjustment.

  The rotation axis of the adapter unit built in the fixed housing is aligned with the rotation axis of the movable lamp body, and a bearing section is provided on the upper surface directly below the adapter to receive the rotation axis of the movable lamp body and maintain the accuracy of the rotation axis. The lower surface of the fixed-side casing directly below is provided with a mounting structure with a rotating structure mounting tool for supporting the load of the movable lamp body and maintaining the rotational axis accuracy. This mounting structure employs a structure in which the mounting tool is housed in a hole structure at the bottom of the housing and tightened from the outside. Rigidity and accuracy are ensured by the receiving structure of the rotating shaft provided above and below, and smooth rotation is realized.

  This fixture supports the load of the movable lamp body by a load support portion having a convex part of the rotation axis of the movable lamp body, and is mounted and fixed inside the rotation shaft mounting hole on the lower surface of the fixed housing. This fixture is divided into two parts in order to facilitate assembly fitting to the convex part of the rotating shaft of the movable lamp. Although it wraps the convex from the outside, it can be easily prevented from spreading outward by incorporating it into the fixed housing. After the attachment is attached to the stationary housing, the attachment is not basically an object to be removed. Therefore, the attachment structure is provided with an anti-reverse device so that it cannot be easily removed.

  Fixed contacts having a plurality of contact pieces with the rotation axis as the axis of symmetry are arranged in the fixed-side casing by the number of poles in the vertical direction. These fixed contacts are directly connected to the adapter terminal or connected to the electronic unit substrate via a lead wire depending on the application. Depending on the form in which the electronic unit is housed in the stationary housing, the adapter terminal portion and the stationary contact can be directly inserted and connected to the electronic unit substrate. In this case, in particular, a flexible deformation portion is provided in the extension portion of the adapter terminal so that the deformation stress generated upon attachment to and removal from the lighting duct does not adversely affect the substrate.

  The tubular rotating shaft on the side of the movable lamp body is press-fitted with an insulating rotating shaft formed of an insulating member with the minimum necessary length to extend the rotating shaft. Connection with a rotating contact is performed by arranging an insulated conductor in the provided groove. In addition, a terminal portion for connecting the lead wire from the movable lamp body and the rotating contact is provided in the portion of the ridge covered with the fixture. A convex part to be combined with the fixture is formed on the rotating shaft of the movable lamp. This shape may be annular or a plurality of protrusions. Since this convex part only supports the load part of a movable lamp, it may be a part.

The fixed contact is provided with four contact pieces on the same axis, and adopts a structure in which a rotary contact of an insulated rotary shaft inserted and fitted in the center is sandwiched from four directions. Multiple contacts can be realized, and contact reliability and high current countermeasures are supported. Since the fixed contact is provided with a plurality of contact pieces, the rotary contact does not require a complete ring shape, and a part of the rotary contact can be cut out. For example, it can be attached to an insulated rotating shaft by making a C-shaped cross section. Facilitates work.
The contact point changes in the range of 3 to 4 points depending on the rotation angle, but even at 3 points, stable contact is maintained. In the portion where the rotating contact does not exist, the insulating rotating shaft swells to the same arc surface, or the width thereof is set to be less than the width of the contact piece or a narrow dimension with a margin, thereby realizing a smooth rotating operation.

  Maintaining the accuracy of the rotating shaft and maintaining the load by a structure in which the rotating shaft integrated with the insulating rotating shaft press-fitted into the tubular rotating shaft is supported at two locations, the upper surface and the lower surface of the stationary housing. Can be adjusted and set individually. In addition, the contact pressure of the stationary contact with the rotating contact is a structure that can be freely set according to the shape, material, and thickness of the contact piece of the stationary contact, and is configured not to be directly influenced by the strength of the insulating member to be held.

  The stopper operation at the time of attachment / detachment is made possible by being pushed from the lighting duct at the time of attachment, so that the operation button and the stopper are automatically pushed down so that the stopper can be rotated. At the time of removal, the operation button is pushed down so that it can move diagonally inward, and the release operation force and the movable direction of the operation button are roughly matched.

The invention's effect

The lighting apparatus according to the present invention can simplify the production process management, the procurement of parts and the inventory management, and the product inventory can be greatly reduced.
This type of luminaire is developed into a series of several models mainly based on the design of the movable lamp body and the combination of the combined lamp capacity and color temperature. In the case of a luminaire for a low-voltage halogen lamp having an electronic step-down transformer (common name: electronic transformer), the series is generally developed with 50 W and 75 W electronic step-down transformers, a plurality of lamps and lamps. If these several types of models are equipped with parts procurement, assembly work, and a standard number of product inventory, they will also have useless similar duplicate inventory.
In the present invention, one type of lighting fixture is completed by combining a stationary housing that houses an electronic unit or the like and a movable lamp in the final assembly step of the lighting fixture. By utilizing this, it is divided into two types of electronic step-down transformer units and movable lamp sub-assemblies and lamps that are housed in the fixed case, and the parts that have been duplicated are stocked in the state of sub-assemblies. Can be reduced. In particular, since the cost composition ratio of the electronic unit is large, the cost reduction effect is large.

The electronic step-down transformer unit in the fixed housing can be assembled in a separate process, shortening the delivery time and simplifying the ordering work.
Further, since the assembly can be performed only by the fixed housing portion, it is not necessary to swing the movable lamp body, and the handling becomes easy. Even if wiring by wires occurs, it is a short wiring work in the unit and it does not become complicated.
Ordering from specialized manufacturers becomes easy, and stable quality and cost reduction can be expected. The supply side can also be delivered in a form housed in a fixed casing corresponding to the unit case, which has the advantage of maintaining quality and clarifying responsibility.

If the combination development is further developed and the assembly of the fixed housing and the movable lamp body at the actual use site is realized, the packaging resources will be greatly reduced, and the storage and transportation costs will be reduced.
In this type of lighting fixture, there is a useless space in the packing box due to the pipe and arm portions extending from the movable lamp body and the fixed housing disposed at a right angle.
On the other hand, it is possible to greatly reduce the useless space by packing the fixed housing along the pipe and the arm. In one example, the packing volume can be reduced by 50%. This greatly contributes to the protection and preservation of the global environment.

Since the wiring from the movable lamp body is connected to the rotating contact in the insulated rotating shaft, the wiring material or the like is not twisted at least in the horizontal rotation operation. As a result, the limitation on the rotation angle and the rotatable direction, which was the main limitation when adjusting the irradiation direction, could be eliminated. Also, unlike the conventional structure, it does not rely on the tightening force of the mounting part, so that smooth operation can be realized with a slight operating force.
Even if the contact pressure on the insulated rotating shaft contact of the fixed contact is increased, the rotational force for moving the movable lamp is slightly increased, and smooth operation is not impaired.

In general, when adjusting the irradiation direction, the same irradiation direction adjustment operation as the desired direction can be performed, and the trouble and stress that require adjustment after operating in the opposite direction as in the conventional structure. Can be eliminated.
This facilitates the attachment / detachment of the appliance to / from the lighting duct and leads to the elimination of unstable operation and adjustment as much as possible in an unstable environment such as a chair or a stepladder.

  The present invention has an electronic step-down transformer in a fixed casing connected and fixed to a lighting duct via a built-in adapter, and supplies its output mainly to a movable lamp suspended from the lower part of the fixed-side casing. The best mode is to apply to a spotlight with a built-in electronic transformer, which turns on a low-voltage halogen bulb. Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an embodiment in which the present invention is applied to an electronic transformer built-in spotlight, and is a front view, a top view, a side view, and a side view of a movable lamp body of a fixed housing. One end of the housing upper portion 1a of the stationary housing 1 has an adapter portion 3 fitted and connected to the lighting duct 2, and the other end has a detachable stopper portion 4 for preventing rotation and preventing drooping after normal mounting. It has. A housing lower part 1b of the stationary housing 1 is provided with a mounting structure in which a hanging pipe 6 is fixedly held via a bifurcated mounting tool 5 and the rotation axis center is aligned. The movable lamp 7 is suspended by a suspension pipe 6.

  Immediately below the adapter portion 3, an adapter terminal 3 a is fixed, and an output terminal portion 8 that holds and insulates the fixed contact 7 is provided. The adapter terminal 3 a bypasses the outside of the output terminal portion 8 and is connected to the substrate 9 a of the electronic step-down transformer unit 9. The output terminal portion 8 is composed of a fixed contact 7 and terminal holders 8a and 8b made of an insulating material. The terminal holder 8a has a bearing portion 8c that receives the rotation axis from the movable lamp body 10 and matches the axis center during horizontal rotation. It has.

  The movable lamp body 10 includes a low voltage halogen lamp 10a with a reflector, a lamp socket 10b, a wiring material, and the like. Moreover, it has the hinge part 10c for enabling adjustment of a vertical irradiation direction, and is connected with the hanging pipe 6. FIG. The hanging pipe 6 serves as a rotating shaft when the movable lamp body 10 is rotated horizontally, and the insulating rotating shaft 11 is press-fitted at the tip to perform the same rotation as an extension of the rotating shaft. The distal end of the insulating rotating shaft 11 is fitted into the bearing portion 8 c and maintains the center of the rotating shaft together with the fixture 5. The insulated rotating shaft 11 also has a terminal structure for holding the rotating contact 12 facing the fixed contact 7 and connecting a lead wire from the lamp socket 10b.

The final assembly is completed by sandwiching the convex portion 6a formed in the hanging pipe 6 with the fixture 5, inserting it into the mounting hole 1c in the lower portion 1b of the housing, rotating it, and fixing it. The stationary contact 7 and the rotating contact 12 are automatically brought into contact with each other, and the output of the electronic unit is guided to the lamp 10a.
The load of the movable lamp 10 can be freely set by the structure and material strength of the hanging pipe 6, the fixture 5, and the housing lower portion 1b, and the accuracy of the horizontal rotation axis is determined by the bearing portion 8c of the housing upper portion 1a and the housing lower portion. It is determined by the accuracy of the mounting hole 1c of 1b, the mounting tool 5 and the mounting tool sliding shaft 11b of the insulated rotating shaft 11, and can be set individually for each load direction. In particular, since the rotating shaft is held at two places on the upper and lower sides of the fixed housing 1, sufficient rigidity against the eccentric load of the movable lamp 10 can be obtained.

  With this structure, the stationary housing 1 and the movable lamp body 10 are manufactured as partial assemblies in separate assembly processes, and are combined in the final assembly process to complete the assembly of the final product. If several types of electronic units, lamps, and movable lamps are prepared, final assembly can be performed and shipped in a short delivery time according to orders.

FIG. 2 is an enlarged view of a joint portion between the stationary housing 1 and the movable lamp body 10. They are a front sectional view, a side sectional view, and a top view, respectively.
The adapter part 3 molded in the housing upper part 1a is mainly composed of an adapter hooking piece 3b, an adapter terminal 3a, and a terminal part holder A8a. After inserting the adapter terminal 3a into the adapter hooking piece 3b, the terminal holder A8a is inserted and fixed. The tip of the adapter terminal 3a on the instrument side extends to both ends in the housing, and has a structure that does not interfere with the configuration of the output terminal portion 8.
Since the main parts are coaxially arranged, the assembly is performed while changing the stacking angle. Specifically, the housing upper part 1a is inverted, and the fixed contact 7, the terminal holder B8b, and the fixed contact 7 are stacked on the terminal holder A8a, and each terminal lead is passed through the terminal hole of the substrate 9a of the PWB assembly. Screw in, and finally solder.

FIG. 3 is a partial cross-sectional view of a front view and a side view showing a partly separated state of the fixed housing 1 and the movable lamp body 10.
After the main parts are assembled in the case upper part 1a by the above-described procedure, the partial assembly work of the fixed case 1 is completed by screwing the attachment / detachment stopper part 4 and the case lower part 1b together. By incorporating an electronic board according to the required characteristics of the movable lamp 10, it is possible to deal with other types.
The adapter terminal 3a is provided with a terminal flexible portion 3c just before being inserted into the substrate 9a so as to absorb as much as possible the deformation stress at the tip of the adapter terminal 3a generated when the adapter terminal 3a is attached to or detached from the lighting duct 2.

  The fixed contact 7 is formed to be a lower fulcrum so that the insulating rotating shaft 11 can be smoothly inserted, and contacts the rotating contact 12 while being spread out. The stationary contact 7 is in contact with the rotating contact 12 by contact pieces 7a having four sides per pole cut and raised from a single material, and is set to be axially symmetric. Since the contact piece 7a is set as a lower fulcrum and set symmetrically, when the insulated rotating shaft 11 is inserted into the stationary housing 1, the centering is automatically performed, and the upper portion of the housing It is possible to easily enter and fit the bearing portion 8c of 1a.

  The contact pressure can be freely adjusted by combining the material, thickness, molding shape, and the like of the stationary contact 7. For example, even if the contact pressure is set high, the stationary rotating shaft 11 and the rotating contact 12 are merely sandwiched by the fixed contact 7, so that no load is always applied to the surrounding insulating members. The load on the resin molded product of the output terminal 8 that holds the fixed contact 7 is applied only during the rotation adjustment operation, and only the sliding frictional resistance of the contact piece 7a of the fixed contact 7 and the rotary contact 12 is applied. . Overall, a highly reliable contact structure is obtained.

FIG. 4 is an exploded perspective view of the fixed-side housing 1 and shows an outline of the structure of the substrate 9a, the output terminal portion 8, and the housing lower portion 1b. The combination method of the case upper part 1a and the case lower part 1b may be an appropriate method of the conventional structure, and in this example, press-fitting and screwing are used together.
FIG. 5 is an exploded perspective view showing a rotating shaft structure of the fixed housing 1 and the movable lamp body 10. In order to improve the assembly workability, the fixture 5 is divided into two parts so that it can be attached to the hanging pipe 6 later.
FIG. 6 is an exploded perspective view showing a schematic assembly structure of the insulated rotating shaft 11, the rotating contact 12, and the lead wire of the movable lamp body 10.

  An insulating rotating shaft 11 formed of an insulating material is incorporated at the tip of the hanging pipe 6 from the movable lamp body 10. The insulated rotating shaft 11 has a tip sliding shaft 11a facing the bearing portion 8c at the tip, forming a mounting tool sliding shaft 11b facing the inner side of the mounting tool 5, and positioning of the rotating shaft in two places at the top and bottom. Made. The substantially lower half of the insulated rotating shaft 11 is lightly press-fitted into the hanging pipe 6, and is prevented from rotating by the notch 6 b of the hanging pipe 6 and the convex portion 11 e of the insulated rotating shaft 11. The fitting gap is reduced as much as possible, and an appropriate length of the insulated rotating shaft 11 is inserted into the suspension pipe 6 so that it can be roughly integrated, and a highly rigid support structure with no shaft run-out against eccentric fluctuation of the suspension load. It is materialized.

The insulated rotating shaft 11 is provided with a guide groove for incorporating the rotating contact 12 corresponding to the number of output terminals, and a U-shaped groove 11 c for guiding the lead wire 10 d from the movable lamp body 10. The U-shaped groove 11c secures a width and a depth that can accommodate the outer diameter of the lead wire 10d, and is provided at 180 ° or 120 ° depending on the number of poles. maintain.

  The rotary contact 12 has a cylindrical shape that is partly cut and partly folded toward the center to form a lead wire connecting portion 12c, and the lead wire 10d core wire portion is pressed into and held. A portion 12b is provided. The purpose of the cylindrical cut is to facilitate assembly to the insulating rotating shaft 11 and prevent deterioration of elasticity. Accordingly, it is only necessary to form a cylindrical shape at a regular assembly position, and a part 11f of the insulating rotary shaft 11 is scraped off to provide a cutting portion 11f to prevent the rotating contact 12 from unnecessarily spreading during assembly. Improves sex. The assembled rotary contact 12 is placed in a predetermined position due to a concave hole provided in the insulated rotary shaft 11 and an inward convex portion 11 e provided at the open end of the rotary contact 12.

  The cylindrical cut-off width is set to be less than the cut-and-raised width of the contact piece 7a of the fixed contact 7 while avoiding the U-shaped groove 11c of the other pole, and avoiding the contact piece 7a falling into the U-shaped groove 11c during rotation. Yes. Specifically, the width of the U-shaped groove 11 c is minimized, and the gap with the open width of the rotary contact 12 is filled with material flaking of the insulating rotary shaft 11. With this structure, it is possible to incorporate each member into the insulating rotating shaft 11 without greatly impairing the cylindrical shape of the contact piece 7a of the fixed contact 7 and obtain smooth rotation and contact.

  In assembly connection of the lead wire 10d from the movable lamp 10, first, the rotary contact 12 is inserted into the insulating rotary shaft 11 and fixed at a predetermined position. Next, the lead wire 10d pulled out from the hanging pipe 6 is temporarily stored in the U-shaped groove 11c, and the pipe insertion portion 11d of the insulating rotating shaft 11 is inserted into the hanging pipe 6 by about 70%. Next, the lead wire 10d core wire portion that has been prevented from unraveling the core wire, such as caulking at the tip, is inserted into the lead wire connecting portion 12c and placed in the clamping portion 12b. The sandwiching portion 12b bent and raised in a taper shape keeps the core wire in contact with it and prevents it from coming off due to the retaining effect. Finally, after rotating the insulating rotating shaft 11 once or twice, the convex portion 11e of the insulating rotating shaft 11 is aligned and pressed into the notch 6b of the hanging pipe 6 to complete the terminal assembly on the movable lamp body side. . By twisting once or twice, the extra lead wire 10d necessary for the work can be easily bent and slightly stored in the hanging pipe 6.

  At the tip of the suspension pipe 6, a pipe convex portion 6 a for fixing to the attachment hole 1 c of the housing lower part 1 b via the attachment 5 is provided. The pipe convex part 6a fits inside the fixture 5, and slides and rotates during the irradiation direction adjustment operation. The pipe convex portion 6a need only support the vertical load of the movable lamp body 10 and does not need to be annular, but by setting a plurality of rotationally symmetrical convex portions, a stable sliding rotation operation can be obtained. Can do. The operating force at the time of horizontal rotation operation is mainly the sum of the frictional force of these sliding rotary parts and the frictional force of the contact piece 7a of the fixed contact 7 and the rotary contact 12, and a high contact pressure is set. Even so, it operates smoothly with a slight operating force.

  The assembly of the movable lamp 10 to the stationary housing 1 is performed by inserting the fixture 5 into the mounting hole 1c provided in the housing lower portion 1b and rotating and fixing it. The mounting hole 1c has a substantially cross-shaped insertion notch 1d, and the mounting tool 5 has a hooking claw 5a having a fitting shape corresponding thereto. The fixture 5 includes a flange 5b, and after the assembly, covers the insertion notch 1d and arranges the appearance. In general, since the insulated rotating shaft 11 and the hanging pipe 6 do not need to be removed after assembling, they are provided with a reverse rotation preventing structure provided with unevenness. Further, the fixture 5 has a two-part structure for facilitating the incorporation into the hanging pipe 6. Although the fixture 5 holds the pipe convex part 6a from the outside, it has a structure that does not spread outward by being incorporated in the attachment hole 1c. Since the fixture 5 is structurally large in the vertical dimension, it can be easily divided into two parts, and the effect of improving the assemblability and the moldability is obtained.

FIG. 7 is a front partial cross-sectional view and a side cross-sectional view showing the attachment / detachment stopper portion 4 before and after attachment to the lighting duct 2.
FIG. 8 is a front partial cross-sectional view and a side cross-sectional view showing the state during the removal operation, similarly.
The detachable stopper portion 4 is composed of a hook 4a, a stopper 4b, and a spring 4e with the housing upper portion 1a as a basic structure. A fixed rotating shaft 4f and an inclined guide plate 4d are provided in a part of the housing upper part 1a. The hook 4a rotates around the fixed rotation shaft 4f and is hooked from the inside of the lighting duct 2 to the duct hooking portion 2c. The stopper 4b is coupled to the hook 4a by the movable rotating shaft 4g and is always pushed upward by the spring 4e. The square hole 4h below the stopper 4b enables sliding on the inclined guide plate 4d and limits the sliding range. The housing lower part 1b stores these and plays a guide when operating the operation buttons 4c.

  When the stationary housing 1 is attached to the lighting duct 2, the adapter portion 3 is fitted and turned to the right so that the hook 4 a is pushed to turn down and the stopper 4 b is pushed down to prevent the movement. When the stationary housing 1 reaches a predetermined position, the stopper 4b jumps into the lighting duct 2 and at the same time the hook 4a rotates and is caught by the duct hooking portion 2c. In this state, reverse rotation and sag of the stationary housing 1 are prevented.

  To remove, the stopper 4b needs to be lowered, and the operation button 4c is lowered. At this time, the operation button 4c is inevitably pushed inwardly in order to apply force to the fingertip. In this structure, since the stopper 4b that supports the operation button 4c sinks downward along the inclined guide plate 4d, the operation button sinks obliquely downward, and may be made to coincide with the operation force application direction of the approximate fingertip. did it. As a result, the conventional pushing and lowering operation can be made a natural operation of pushing diagonally downward.

FIG. 9 is a three-sided view of the appearance when applied to a duct plug with a grounding electrode, which is one form of an adapter. Although the figure shows a duct plug, from the above description, if the duct plug housing is extended in the lateral direction, it can be easily deployed in a stationary housing portion containing various electronic units.
FIG. 10 is a front partial sectional view and a side partial sectional view showing the internal structure of a duct plug with a ground electrode. As a method of suspending the movable lamp body, an arm type and a pipe type using a metal plate are illustrated.
FIG. 11 is a cross-sectional view showing the structure of the ground electrode.
FIG. 12 is a cross-sectional view showing a separated state of the adapter portion side and the movable lamp body side.
FIG. 13 is a bottom view of the separated adapter part side.

  Since the duct plug basically transfers the input from the adapter unit 3 to the movable lamp as it is, the fixed contact 7 is exposed to the input voltage and becomes a terminal for immediate output. As a countermeasure, the terminal holder A8a, the terminal holder B8b, and the terminal holder D8d that substitutes for the substrate 9a are used to increase the insulation distance and cover with an insulating wall. The contact holder 7a is covered with a terminal holder to a range almost equal to the required movable range, and as an effect, it works as a movable stopper of the stationary contact 7, preventing over-displacement when an overload is applied and preventing deterioration. . Further, by narrowing the diameter of the shaft hole that accommodates the insulated rotating shaft 11 to the minimum, even if an erroneous operation or the like during insertion / assembly occurs, an overload on the fixed contact 7 and the contact piece 7a does not occur. In addition, an insulating rib 8e is provided around the terminal holder D8d so as not to touch a portion that can easily become a charged part even in a separated state.

  One end of the stationary contact 7 is provided with a lead receiving terminal 7c for receiving and connecting the lead terminal 3d from the adapter terminal 3a, and is connected in a pressure contact structure by penetrating the lead terminal 3d during stacking assembly. In this case, since it moves mutually within the lead receiving terminal 7c and absorbs the displacement at the time of attachment / detachment of the adapter terminal 3a, a bending flexible part etc. are not provided. The lead receiving terminal 7c cuts and raises the contact piece from one side, and has a support structure having a substantially square cross section that supports in the opposite direction, and maintains the contact by the lead receiving terminal 7c alone.

  In order to provide the grounding electrode, the grounding pin 15a and the grounding spring 15c are accommodated at the center tip of the terminal holder A8a, and the grounding relay terminal 15b is disposed immediately below. The ground relay terminal 15b is sandwiched and held between the upper housing 14a and the terminal holder A8a, and has a structure that can move up and down within a limited range. In this movable range, it contacts with the grounding rotary terminal 17 disposed at the tip of the insulated rotary shaft 11 and absorbs the contraction of the grounding pin 15 a when attached to the lighting duct 2. The ground electrode passes through the center of the rotational axis and reaches the connection terminal portion 11j. On the other hand, a lead wire with a round terminal can be screwed to the fixed end side of the ground relay terminal 15b, and consideration is given to incorporating an electronic unit or the like.

Insulating rotating shaft 11 needs to be provided with three U-shaped grooves 11c in order to provide a grounding electrode. For this purpose, connection terminal portion 11j connected to the lead wire from movable lamp body 10 is provided as fixture sliding shaft 11b. Is greatly increased in thickness and is arranged on the outer periphery thereof. Further, the workability is maintained and the surplus length is absorbed by the structure in which the lead wire 10d is bent to the outer periphery of about 120 ° up to the press contact terminal portion 17a and the like to be connected. The lead wire 10d drawn from the suspension pipe 6 or the like reaches the connection terminal portion 11j through a lead wire storage portion 11h provided by scraping the fixture sliding shaft 11b. The connection is made by press-fitting into the press contact terminal of each terminal embedded therein, and the connection is made to each rotary contact 12 and the ground rotary terminal 17. Since the U-shaped grooves 11c are provided at intervals of 120 °, intersections with other poles are made, so that insulation is maintained by covering the U-shaped grooves 11c with insulating spacers 17b. Further, the insulating portion between the poles is provided with a tapered shaft portion 11g having a narrowed bottom to prevent the insulation performance from being deteriorated due to wear metal powder adhesion.
The connection method of the connection terminal part 11j of the insulated rotating shaft 11 and the rotary contact 12 is a manufacturing method according to the prior art as one component, although there are various specific measures such as insert molding, for example, in terms of manufacturing quantity and structural dimensions. Therefore, detailed description is omitted.

The duct plug housing 14 is provided with a plug stopper 16 to prevent reverse rotation after mounting, and is always pushed upward by a spring 16e.
When the movable lamp 10 is suspended by the arm 18, a hollow arm rotation shaft 19 is provided and attached via the fixture 5. The arm rotation shaft 19 includes a convex portion 19a and a flange portion 19c, and a male screw that fits the hollow round nut 20 is formed on the lower side of the flange portion 19c.
The lead wire 10 d from the movable lamp body 10 passes through the hollow circular nut 20 and the mounting hole of the arm 18 and passes through the arm rotating shaft 19. At this point, the arm 18 is integrated with the arm rotary shaft 19 and the hollow round nut 20. The tightening torque at this time is only for tightening the arm 18, and does not affect the operating force during adjustment. Thereafter, the insulation rotating shaft 11 is press-fitted into the inner hollow portion to perform the connection work, and finally, the projecting portion 19a is hooked by the two-divided fixture 5 and inserted into the mounting hole 14c of the lower housing 14b to be movable. The lamp body 10 can be suspended.

The convex portion of the rotating shaft to be hooked on the fixture 5 may be determined by the material of the component and the processing method, and is not limited to the bulge processing or the die casting manufacturing method as illustrated. For example, it is sufficient to incorporate a two-part sliding ring 6c into a round hole 19b in which a hole is formed in the hanging pipe 6. This does not depend only on the fastening to the lower housing of the conventional structure, but it is up and down, front and rear, left and right. This is a result of dispersing the support load in each direction, and it is also possible to individually adjust the operation force.
Moreover, although the first half demonstrated with the instrument which incorporated the electronic step-down transformer, you may store another kind of electronic unit according to diversification of a light source etc., and a movable lamp body is not limited to a lighting fixture. In short, it can be applied to various electric appliances and electronic devices that are attached to the lighting duct 2 and need to freely set and adjust the target direction and the operation direction.

    1 is a basic structure diagram of a spotlight for a lighting duct according to the present invention.     FIG. 6 is a structural diagram illustrating an example of a connection holding unit between a stationary housing and a movable lamp.     FIG. 6 is a structural diagram showing a separation state of a fixed housing and a movable lamp body side rotating shaft.     It is a disassembled perspective view which shows an example of the connection method of an electronic unit board | substrate and a terminal.     It is a disassembled perspective view which shows an example of the structure which fits and hold | maintains a movable lamp body in a stationary side housing | casing.     It is a disassembled perspective view which shows an example of the rotating shaft front-end | tip structure in a movable lamp.     FIG. 6 is a structural diagram showing a fitting state of one of the fixed side housings to prevent drooping and rotation.     It is structural drawing which shows the operation state for removing a stationary side housing | casing.     It is an external view at the time of applying this invention to a duct plug.     It is a front sectional view at the time of attaching a lamp to an duct plug via an arm, and a side sectional view at the time of attaching via a pipe.     It is sectional drawing which shows the connection structure at the time of providing a grounding electrode in an adapter part.     It is a fragmentary sectional view which shows the isolation | separation state of a duct plug main body and a movable lamp body side rotating shaft.     It is a bottom view of the duct plug main body which separated the movable lamp body side rotating shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed side case 1a Case upper part 1b Case lower part 1c Mounting hole 1d Insertion notch part 2 Lighting duct 2a Duct insulator 2b Duct conductor 2c Duct hook part 3 Adapter part 3a Adapter terminal 3b Adapter hook piece 3c Terminal flexible part 3d Lead terminal 4 Detachable stopper 4a Hook 4b Stopper 4c Operation button 4d Inclined guide plate 4e Spring 4f Fixed rotating shaft 4g Moving rotating shaft 4h Square hole 5 Mounting tool 5a Hook claw 5b Flange 6 Hanging pipe 6a Pipe convex 6c Notch 6c Sliding ring 7 Fixed contact 7a Contact piece 7b Lead terminal 7c Lead receiving terminal 8 Output terminal 8a Terminal holder A
8b Terminal holder B
8c Bearing part 8d Terminal holder D
8e Insulating rib 9 Electronic step-down transformer 9a Substrate 10 Movable lamp 10a Halogen lamp 10b Lamp socket 10c Hinge part 10d Lead wire 11 Insulated rotating shaft 11a Tip sliding shaft 11b Mounting tool sliding shaft 11c U-shaped groove 11d Pipe insertion part 11e Convex portion 11f Cutting portion 11g Tapered shaft portion 11h Lead wire storage portion 11j Connection terminal portion 12 Rotating contact 12a Latching dowel 12b Clamping portion 12c Lead wire connection portion 13 Screw 14 Duct plug housing 14a Upper housing 14b Lower housing Body 14c Mounting hole 14d Insertion cutout portion 15 Ground terminal 15a Ground pin 15b Ground relay terminal 15c Ground spring 16 Plug stopper 16e Spring 17 Ground rotation terminal 17a Pressure contact terminal portion 17b Insulating spacer 18 Arm 19 Arm rotation shaft 19a Protrusion portion 19b Round hole Part 19c flange part 20 hollow round nut

Claims (6)

  In a lighting fixture that is attached to a lighting duct installed on a normal indoor ceiling via a built-in adapter, and can adjust the irradiation direction of at least the horizontal plane, the axis holding part of the horizontal rotation axis can be used as the lighting duct. Provided in at least two places above and below the fixed housing that is mounted and fixed, and provided with latching parts that support the hanging load at the bottom of the housing, and the rotating shaft on the movable lamp side is the two shafts on the top and bottom of the fixed housing A lighting apparatus for a lighting duct that is fitted with a core holding part to hold a horizontal rotation operation and an eccentric load, and a vertical load is held by a hanging load retaining part on a lower side of the casing.   The upper axis holding part of the fixed housing attached to the lighting duct is provided with irregularities corresponding to the irregularities at the tip of the horizontal rotation axis, and the lower axis holding part penetrates the tip of the horizontal rotation axis and suspends the load. A mounting hole for holding is provided, and the rotary shaft fixture that is inserted and fixed inside the mounting hole by fitting with the convex part provided at the tip of the hanging rotary shaft is divided into left and right parts, and the convex part is sandwiched from both sides. The lighting fixture for a lighting duct according to claim 1, wherein the lighting fixture is in close contact with the mounting hole to form a part of the shaft core holding portion.   A part of the insulating rotating shaft formed of an insulating material is press-fitted inside the tubular rotating shaft provided with a projection at the tip to form an extension of the movable lamp side rotating shaft, and the surface of the insulating rotating shaft is substantially cylindrical. The rotary sliding contact is incorporated and a radial groove is provided so that a part of the rotary sliding contact is bent into the groove and a part is cut and formed to form a crimp contact and lead-off structure of the lead wire core wire, The lighting apparatus for a lighting duct according to claim 1, wherein a connecting connector structure is realized by press-fitting a lead wire core drawn from the movable lamp body into the terminal narrowing portion.   The outer peripheral surface of the edge with the fixed hole diameter on the lower surface of the fixed housing holding and fixing the insulated rotating shaft set to more than twice the diameter of the upper bearing hole, and the width of the lower bearing sliding portion of the insulated rotating shaft is increased. It features a structure in which the terminal part of the press-contact structure is arranged substantially radially and a lead wire storage part for bending and storing the lead wire drawn from the movable lamp body along the outer peripheral surface is led to the connection terminal part. The lighting apparatus for a lighting duct according to claim 1. The insulation member and the contact on the fixed housing side are stacked in a coaxial symmetrical arrangement around the rotation axis, and the fixed contact is composed of three or more contact pieces per pole of the upper constriction in the coaxial symmetrical arrangement. It also has a function to clamp the rotary contact on the side alone and to guide it to the shaft during assembly fitting operation, and the contact pressure that limits the movable range of the contact piece with the upper and lower insulating members and does not depend on the strength of the insulating structure The lighting fixture for a lighting duct according to claim 1, wherein the securing of the lighting duct is realized.   When removing the stationary housing from the lighting duct, in the housing removal structure where the operation button provided on the anti-rotation stopper is pressed down against the inside of the housing to release it, the anti-rotation stopper The guide plate placed at least below the guide plate that supports the movement is set diagonally downward. When the operation button operation is not required, the guide plate moves up and down roughly. When the removal operation is performed, it rotates with the operation button. The lighting fixture for a lighting duct according to claim 1, wherein the prevention stopper is slid inward so that the operation force application load to the operation button and the operation direction are substantially matched.

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