JPH0638325Y2 - Freely projecting device for hanging spot lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a light projecting device for a hanging spot lighting device.

<Prior Art> A low-voltage electric wire is laid in parallel, and a large number of instrument main bodies are suspended and wired in a bridging state between the two erected electric wires.
Regarding the wiring system, so to speak, as a conductive wire, with respect to the lighting system for lighting the lamp of each fixture body, the applicant previously proposed JP-A-64-7405, and on the interior decoration of various stores by the implementation business, We were able to achieve a considerable result.

Also in this known invention, the fixture body (A) is rotatably assembled with the horizontal longitudinal center line as a fulcrum because of the relationship with the wiring tool (B).
It is possible to change the projection direction of 8).

<Problems to be Solved by the Invention> However, in the case of the above-mentioned known invention, the lamp socket (12) of the appliance body (A) and the three-pronged terminals (39) of the cover bushes (20) located at the left and right ends thereof are Body (A)
Since they are connected by the wiring cord (13) inside, in order to prevent the cord (13) from being twisted, the cord cannot be rotated indefinitely, and the rotating stopper projection (15) and the locking projection ( 24) It is necessary to add a special regulation structure that locks with 24).

In addition, since the wiring cord (13) and the terminal (39) must be electrically connected, the work is very troublesome and the lighting equipment as a whole is still long.

<Means for Solving the Problem> The present invention is intended to improve such a problem, and as a result, a lamp socket is integrally attached to the central portion of the lower surface as a light projecting device for a hanging type spot lighting fixture. An approximately cylindrical instrument body, a pair of left and right lamp connection terminals that are erected from the socket toward the inside of the instrument body, a lamp that is detachably inserted into the connection terminals from below, and both ends of the instrument body. And a pair of left and right conductive column mounting bosses that are fitted to each other so as to be rotatable relative to each other and have a substantially U-shaped cross-section, and conductive hanging hanger columns that are integrally erected from the mounting bosses. , A pair of left and right conductive horizontal screw shafts screwed into the device body while penetrating each of the mounting bosses and the device main body so as to pivotally support the mounting boss, and a large diameter head portion of the screw shaft. Opposite the boss Consisting of conductive compression springs inserted between each other, the tip of the screw shaft is brought into contact with the lamp connecting terminal, and the connecting terminal and the hanger strut are electrically conductive.
The lamp is set to light up, and the lighting direction of the lamp can be changed by rotating the fixture main body with respect to the above-mentioned stanchion mounting boss while using both screw shafts as fulcrums. Is the main feature.

<Operation> According to the configuration of the present invention, the hanger support for suspending the fixture body and the connection terminal of the lamp socket are connected to the support mounting boss, the compression spring, and the lateral screw shaft to ensure stable and reliable conductivity. Since the lamp is kept in the state, the lamp can be turned on by itself without any trouble.

Also, while maintaining its conductive state, it is possible to rotate the instrument body around the fulcrum of the horizontal screw shaft with respect to the mounting boss of the hanger strut, and this also allows the light projection direction of the lamp to change freely. Therefore, it can be said that it is extremely effective for spot lighting in various stores.

<Embodiment> The concrete constitution of the present invention will be described in detail below with reference to the illustrated embodiment. Figs. 1 to 19 show a small spot lighting device (A) used by suspending it on a low voltage erection wire (W). (10) is a substantially cylindrical instrument body made of hard synthetic resin or other electrical insulating material, and a flat lamp socket (11) and a plurality of tapping screws (12 ) Is fixed and integrated.

(13) is a pair of left and right lamp connection terminals that are vertically integrated so as to be exposed on the lower surface of the socket (11), and the upper ends of both are from the socket (11) to the inside of the instrument body (10). Introduced and buried. (14) is a lamp which is detachably inserted into the socket (11) from below, (15) is its shade, (16) is a pair of tension coil springs for fixing the shade (15), and the shade (15) It is connected and stretched between the instrument body (10).

(17) is a pair of left and right conductive hanger columns for suspending the device, which are erected from both ends of the device body (10).
On the other hand, the instrument body (10) is pivotally supported in a relative rotatable state, so that the light projecting direction of the lamp (14) can be freely changed.

That is, in FIGS. 13 and 14 clearly showing this, (18) is a boss receiving groove cut out at both ends of the instrument body (10), and (19) is a relative groove into each groove (18). It is a column mounting boss that is rotatably fitted, and both of the left and right pair of bosses are made of a conductive material and have a substantially U-shaped cross section.
(20) is a conductive horizontal screw shaft screwed from the hollow inside of each mounting boss (19) to the instrument body (10) along the horizontal longitudinal centerline (XX), and is a pair of left and right thereof. Both of them are fixed nuts (2) embedded inside the instrument body (10).
Corresponding to 1), it is adhesively integrated under the screwed state with each nut (21). The tip of the horizontal screw shaft (20) is in contact with the lamp connection terminal (13) inside the instrument body (10) and is in a reliable conductive state.

(22) is a fool hole for inserting a horizontal screw shaft that is opened in the center of each column mounting boss (19), and (23) and (24) are large diameters of the mounting boss (19) and the horizontal screw shaft (20). A conductive compression spring and a washer are installed in parallel with each other between the head portion (25) and the head portion (25), and therefore the device body () is resisted against the elastic force of the spring (23). 10) and the mounting boss (19) can be relatively rotated around the fulcrum of the horizontal screw shaft (20).

Then, the hanger column (17) has its mounting boss (19).
, And they are fixedly integrated with the set screw (26) so that they cannot be removed. (27) is an end cap fitted inside the hollow of each mounting boss (19), and the lower end of the hanger support (17) and the large diameter head (25) of the horizontal screw shaft (20) are unsightly exposed. Is preventing things.

According to the above configuration, the hanger column (17) is electrically conductive to the lamp connection terminal (13) via the mounting boss (19), the washer (24), the compression spring (23), and the horizontal screw shaft (20). The lamp (14) will be turned on, but as long as the automatic conductive action is achieved, the configuration shown in FIG. 15 instead of FIG. 14 may be adopted.

In other words, in the case of the modified embodiment, the use of a separate end cap (27) is omitted, and instead, the large diameter head portion (25) of the lateral screw shaft (20) is formed to be extremely large, so that the column The mounting boss (19) is kept blind as if it were filling the hollow interior, and the hanger support (17) is integrally welded to the mounting boss (19) when it is inserted into the mounting boss (19). . As the compression spring (23), practically, a disc spring, a coil spring, a spring washer, etc. can be widely adopted.

Further, (28) is a turning operation handle of the instrument body (10), and its base end portion is screwed and planted in the central portion of the upper surface of the instrument body (10) through a required number of adapters (29). ing. Reference numeral (30) is a fixed nut that is screwed with the fixed nut, and is embedded inside the instrument body (10). (31) is a knob cap that is integrally attached to the overhanging tip of the operation handle (28). If you grasp and swing this knob, it will be attached to the mounting boss (19) of the hanger support (17). The direction of projection of the lamp (14) is changed by the instrument body (10) that is pivotally moved.

The pair of right and left hangers (17) stand up from the stanchion mounting boss (19) on the instrument body (10) side with the same length as each other. As is clear from FIG. 10, the pair of middle contact protrusions (33) are formed so as to project at equal height positions corresponding to each other, as is apparent from FIG. (34) is each contact protrusion (33)
It is a locking groove that is cut out as an outward opening on the circumferential surface of, and engages with a conductive hanger arm described later,
Conducts electrical conductivity.

(35) is a tension connecting spring that is located between the retaining protrusion (32) and the contact protrusion (33) in the vertical direction and that is loosely connected to both the hanger columns (17) so as to bridge them. , Made of synthetic resin and other electrical insulation, both hanger stanchions (1
7) is always pressed and urged in opposite lateral directions.

In this respect, in the figure, the tension connection spring (35) is a leaf spring biased in a predetermined arc shape, and the restoring elastic force pushes both the hanger pillars (17) to the opposite lateral outward direction. Although it is set to push, both sides of the hanger column (1
Even if 7) is linked to the tensioning state similar to the above, it does not matter.

In any case, since the tension connecting spring (35) is positionally controlled by the upper retaining protrusion (32) and the middle contact protrusion (33), there is no risk of it coming off the hanger support (17). Also, since the spring (35) connects both the hanger pillars (17) to each other, it is possible to effectively prevent the improper swaying movement, etc., and to always maintain a stable and reliable confrontation state. Become.

(36) is an encircling ring for receiving and restraining especially the middle contact bumps (33) of both hanger struts (17) in the above-mentioned tensioning action from the lateral outside, and (37) is the diameter of the encircling ring (36). A pair of left and right hanger arms that are combined so as to project laterally outwards that are opposite to each other along the line. The hanger arm (37) is made of a conductive metal wire, and the surrounding ring (36) is a hard composite. Each is made from resin and other electrical insulation materials as follows:

That is, in FIGS. 1 to 8 clearly showing this, (s) shows the inner diameter dimension of the surrounding ring (36), which is the above-mentioned both hanger props (17) in the lateral outward tensioning state. ) Is set smaller than the mutual interval dimension (l) in advance. Reference numeral (38) denotes a pair of partition stoppers which are inwardly projected from the inner wall surface of the surrounding ring (36) and have a substantially "F" shape in plan view.

Reference numeral (39) is a hanger arm receiving concave groove which is cut out as an inward opening shape on an arc-shaped inner wall surface of the surrounding ring (36) which is divided into two parts by both stoppers (38), and one end of the groove is formed. Ends with a blind hole (40) formed in one of the stoppers (38) described above, and the other end of the stopper stopper (38) extends along the radial direction of the surrounding ring (36) to the other stopper (38). It is open to the outer wall surface of the surrounding ring (36) while continuing from the tunnel hole (41) formed therethrough.

On the other hand, as shown in FIGS. 16 and 17, each of the hanger arms (37) has its base end portion (42) bent and formed in an arc shape in plan view corresponding to the arc-shaped inner wall surface of the surrounding ring (36). Cage,
The arcuate base end (42) is fitted into and integrated with the receiving groove (39) of the surrounding ring (36).

(43) is also a straight tip of the hanger arm (37) and extends along the diameter line of the surrounding ring (36). Reference numeral (44) is a midway portion which forms a boundary between the distal end portion (43) and the proximal end portion (42), and this is bent in a "F" shape in a plan view, so that the surrounding ring ( While supporting the tunnel hole (41) of (36), the supporting strength of the hanger arm (37) is increased so as to suppress the swinging motion and bending of the hanger arm (37) itself.

Reference numeral (45) is a conductive connecting piece slidably inserted into the tip end portion (43) of each hanger arm (37) and is positioned by a set screw (46) from above as shown in FIG. It is supposed to be fixed. (47) is an electric wire receiving concave groove cut out in the connecting piece (45), (48) is an electric wire (W) received in the concave groove (47), and the connecting piece (45)
It is a fixing screw with itself, and is screwed in so as to be able to advance and retreat from below, and is electrically connected to the electric wire (W) by the needle tip portion thereof.

Incidentally, (49) is an electric insulating film attached to the entire exposed surface of the hanger arm (37) protruding laterally outward from the surrounding ring (36).

The left and right pairs of the hanger arms (37) as described above are projected in a symmetrical arrangement arrangement in plan view centering on the surrounding ring (36), and moreover, the partition stopper (38) of the surrounding ring (36). Are combined with the surrounding ring (36) in a separated state where they do not contact each other.

That is, as is clear from FIGS. 1, 4, 6 to 8, the hanger arms (37) are placed in the receiving concave grooves (39) of the arc-shaped inner wall surface that are bisected by the partition stopper (38). The arcuate base end (42) is fitted securely, and the middle part (44) of the arm (37) that extends and bends in the reciprocal direction (front-rear direction) as a substantially "F" shape is surrounded by the surrounding ring. The straight tip (43) of the arm (37), which has been led out at a right angle through the tunnel hole (41) of (36), is laterally aligned along the diameter line of the surrounding ring (36). It is extended to the outside for a long time.

A pair of hanger struts (17) standing upright from both left and right ends of the instrument body (10) are located inside the surrounding ring (36) at a mid-height position where the contact protrusions (33) extend. A locking groove (34) that is inscribed in the wall surface and opens outward of the contact protrusion (33) and an arcuate base end portion of the hanger arm (37) exposed on the inner wall surface of the surrounding ring (36) ( Four
2) and are held in a conductive state by being locked to each of the left and right pairs. Based on its conductive state,
As a result, the device body (10) is suspended from the surrounding ring (36).

In that case, the arcuate base ends (4
In 2), when the pair of left and right is individually fitted to the inner wall surface of the surrounding ring (36), the leopard also has a perfect circle in which the partition stopper (38) intervenes. In other words, while using it as a guide rail, both hanger columns (1
Engagement ring (36) with 7) kept in the locked position.
It is also possible to make horizontal rotation about the virtual vertical center line (YY) of the lamp, which allows the light projecting direction of the lamp (14) in the instrument body (10) to be freely changed.

At that time, the partition stopper (3
8) also fulfills the function of receiving the horizontally rotating hanger column (17).

Further, both hanger support columns (17) are urged toward the opposite lateral sides by the tensioning connection springs (35) at the upper position thereof, so the locking action with the hanger arm (37) is strengthened. Therefore, it is possible to always maintain a stable conductive state. Further, even if the above-mentioned locked state is released by a sudden impact during suspension use, there is no fear that the above-mentioned conductive action will be lost due to the urging and pressing action of the connecting spring (35). .

Moreover, the strut connecting spring (35) is interposed at the upper position of both hanger columns (17), and the mutual spacing dimension of both hanger columns (17) at the upper position is such that the contact protrusion (33) projects. Mutual spacing at mid-height (l)
Since it is always larger than the above, even if the locked state is released, the connecting spring (35) is hooked on the surrounding ring (36) from above, and as a result, the instrument body (10).
There is no danger of the falling from the siege ring (36).

In order to prevent this danger more completely, the length (d) of the connecting spring (35) should be made larger than the inner diameter (s) of the surrounding ring (36) in advance. Is preferred.

In the illustrated embodiment, the contact protrusion (33) is formed so as to project at a mid-height position of the hanger strut (17), and the locking groove (3
4) is locked to the arcuate base end (42) of the hanger arm (37), but if the above-mentioned working state can be achieved, the contact protrusion (33) is partially overhanged. It suffices to omit the installation, instead of forming the hanger pillar (17) itself to be thick and to directly provide the above-mentioned locking concave groove (34) at the middle height position.

<Effects of the Invention> As described above, in the present invention, a substantially cylindrical instrument body (10) in which the lamp socket (11) is attached integrally to the lower surface central portion is provided.
A pair of left and right lamp connection terminals (13) planted from the socket (11) toward the inside of the appliance body (10), and a lamp (14) detachably inserted into the connection terminals (13) from below. ), A pair of left and right conductive column mounting bosses (19) having a U-shaped cross section and fitted to both ends of the instrument body (10) so as to be relatively rotatable, and the mounting bosses (19). The electrically conductive hanger columns (17) for suspension, which are respectively integrally erected from the above, and the mounting bosses (19) so as to pivotally support the mounting bosses (19) and the device body (10). While doing the equipment body (10)
A pair of left and right conductive horizontal screw shafts (20) screwed into the screw shaft, and a large-diameter head (25) of the screw shaft (20) and the mounting boss (19) are respectively interposed between them. And a conductive compression spring (23). The tip of the screw shaft (20) is brought into contact with the lamp connecting terminal (13) respectively, and the connecting terminal (13) and the hanger column (1).
It is determined that the lamp (14) should be turned on by the conductive action with 7), and the instrument body (10) is rotated with respect to the column mounting boss (19) while using both screw shafts (20) as fulcrums. Since the setting is made so that the light projecting direction of the lamp (14) can be changed by operation, there is an effect that the problem of the prior art described at the beginning can be surely improved.

That is, a conductive hanger column (17) for hanging the instrument body (10) and a lamp connection terminal (13) of the instrument body (10).
Are connected and integrated in a conductive state by a rigid horizontal screw shaft (20) and a compression spring (23) that attach the strut mounting boss (19) to the instrument body (10), so that the horizontal screw is substantially The entire lighting fixture can be assembled very simply and efficiently by only screwing in the shaft (20), and the lamp (14) is remarkably stable even in the conductive state in which it should be lit and has excellent durability. .

The instrument body (10) and the column mounting boss (19) are relatively rotatably fitted, and the horizontal screw shaft (20) is attached to the column body mounting boss (19). Since it also serves as a pivot axis, its assembly structure is remarkably simplified, and the fixture body (10) can be pivoted indefinitely to freely change the projection direction of the lamp. It is also possible.

Further, if the configuration of claim 2 is adopted, the large diameter head portion (25) of the lateral screw shaft (20) is passed from the hollow inside of the column mounting boss (19).
May be unsightly exposed, and that end cap (27)
It can be said that it is more rational because there is an effect that the makeup can be applied by coating, and particularly when the construction of claim 3 is adopted, the fitting of the separate end cap (27) is unnecessary.

Further, if the configuration described in claim 4 is adopted, the instrument body (10) can be smoothly rotated by the operation handle (28), which is more and more convenient.

[Brief description of drawings]

FIG. 1 is a perspective view showing a suspended state of a lighting device according to the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a front view corresponding to FIG. 4,5
FIG. 7 is a plan view and a side view of FIG. 3, FIG. 6 is a sectional view taken along line 6-6 of FIG. 3, and FIG. 7 is a sectional view corresponding to FIG. 6 in a state in which the lamp is further turned. 8 is a sectional view taken along line 8-8 of FIG. 4, FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 4, and FIG. Front view, Figures 11 to 13 are lines 11-11, 12-12 and 13 of Figure 10.
-13 sectional views taken along the line 13, FIG. 14 is a sectional view taken along the line 14-14 of FIG. 11, FIG. 15 is a sectional view showing a modified embodiment corresponding to FIG. 14, and FIGS. 16 and 17 are hanger arms. FIG. 18 is a plan view and a front view of a system state in which a plurality of lighting fixtures are suspended and wired. (10) …… Main body (11) …… Lamp socket (13) …… Lamp connection terminal (14) …… Lamp (17) …… Hanger column (19) …… Column mounting boss (20) …… Horizontal screw shaft (23) …… Compression spring (25) …… Large diameter head (27) …… End cap (28) …… Rotating operation handle

Claims (4)

[Scope of utility model registration request] 1. A substantially columnar instrument main body (10) in which a lamp socket (11) is integrally attached to the central portion of the lower surface, and left and right planted from the socket (11) toward the instrument main body (10). A pair of lamp connection terminals (13), a lamp (14) that is detachably inserted into the connection terminals (13) from below, and is fitted to both ends of the appliance body (10) so as to be relatively rotatable. And a pair of left and right conductive pillar mounting bosses (19) having a substantially U-shaped cross section, and hanging conductive hanger pillars (17) integrally erected from the mounting bosses (19), respectively. In order to pivotally support the attachment boss (19) and the instrument body (10), the instrument body (10) is penetrated through the respective attachment bosses (19).
A pair of left and right conductive horizontal screw shafts (20) screwed into the screw shaft, and a large-diameter head (25) of the screw shaft (20) and the mounting boss (19) are respectively interposed between them. And a conductive compression spring (23). The tip of the screw shaft (20) is brought into contact with the lamp connecting terminal (13) respectively, and the connecting terminal (13) and the hanger column (1).
It is determined that the lamp (14) should be turned on by the conductive action with 7), and the instrument body (10) is rotated with respect to the column mounting boss (19) while using both screw shafts (20) as fulcrums. A suspendable spot lighting device light projecting device, characterized in that the projection direction of the lamp (14) can be changed by operation. 2. A large-capacity head (25) of the horizontal screw shaft (20) is fitted to the strut mounting boss (19) from its lateral outside by an end cap (27) which is integrated and coated. A device for projecting light of a hanging type spot lighting fixture according to claim 1. 3. The large-diameter head portion (25) of the horizontal screw shaft (20) itself is formed as a large-sized end cap, and the hollow interior of the column mounting boss (19) is filled with it. The device for freely projecting a hanging type spot lighting fixture according to claim 1. 4. The apparatus for projecting light of a hanging type spot lighting apparatus according to claim 1, wherein a rotary operation handle (28) is integrally projected from a central portion of an upper surface of the apparatus body (10).