Lighting fixture body and lighting fixture

Abstract

To provide a lighting fixture body and a lighting fixture that are fixed to a workbench, a stepladder, etc. by a mounting and fixing part. [Solution] The lighting fixture body 1 comprises a mounting and fixing part 2, a stay part 3 provided on the mounting and fixing part, an annular holding part 4 swivellably supported at the tip of the stay part, and an approximately cylindrical socket part 5, part of its outer surface rotatably held by the annular holding part and having a power cord or power outlet 51c on its outer surface excluding the part held by the annular holding part, characterized in that by tightening an operating knob 34 provided on the stay part, the swivel angle of the annular holding part relative to the stay part is fixed, and the annular holding part reduces in diameter to tighten the outer surface of the socket part, thereby restricting rotation of the socket part by sliding resistance.

Description

[Technical Field]

[0001] This invention relates to a lighting fixture body and a lighting fixture that are fixed to a workbench, stepladder, etc. using a mounting fixing part. [Background technology]

[0002] Conventionally, lighting fixtures have been known that have a mounting and fixing part (e.g., a clip) that can be easily fixed to any member such as a workbench or a stepladder at work sites where lighting fixtures are not provided. Some such lighting fixtures have a swivel mechanism that tilts the socket part up and down or left and right so that the lighting direction can be changed while the position fixed to the workbench or the like by the mounting and fixing part remains the same. Some also have a power outlet to supply power to other electrical appliances. Summary of the Invention [Problem to be solved by the invention]

[0003] However, in the above-mentioned conventional lighting fixtures, the positions of the power cord extending from the socket and the power outlet provided in the socket are fixed in a certain direction, and depending on the location where the mounting part can be fixed and the direction in which the illumination light should be emitted, the power cord or the cord of the electrical appliance connected to the power outlet may interfere with surrounding structures or become twisted, which causes inconveniences. As a result, there is a problem in that the lighting fixture cannot be used with sufficient flexibility. [Means for solving the problem]

[0004] The invention of claim 1 of the present application provides a lighting fixture body comprising a mounting and fixing portion, a stay portion provided on the mounting and fixing portion, an annular holding portion supported at the tip of the stay portion so as to be swivelable, and a substantially cylindrical socket portion having a power cord or power outlet on its outer surface excluding the portion held by the annular holding portion and part of its outer surface rotatably held by the annular holding portion, wherein the swivel angle of the annular holding portion relative to the stay portion is fixed by tightening an operating knob provided on the stay portion, and the annular holding portion reduces in diameter to tighten the outer surface of the socket portion, thereby restricting the rotation of the socket portion by sliding resistance.

[0005] The invention of claim 2 of the present application provides a lighting fixture body according to claim 1, wherein the stay portion is a bifurcated support member erected on the mounting and fixing portion, and the annular holding portion has a pair of pieces provided radially outwardly opposite each other, and these pieces form an openable and closable clamp portion. The clamp portion is formed so that the base end is spaced apart from the tips of the pieces while the tips are in contact with each other, and by clamping the clamp portion between the bifurcated portions of the stay portion and tightening the operating knob, the bifurcated portions bend inward to fix the oscillating angle of the annular holding portion, and the clamp portion contracts in diameter to tighten the outer circumferential surface of the socket portion, so that rotation of the socket portion is maintained by sliding resistance.

[0006] The invention of claim 3 of the present application provides the lighting fixture body according to claim 2, characterized in that gear grooves are provided on the opposing surfaces of the forked portion and the clamp portion to mesh with each other and form a rotational click mechanism.

[0007] The invention of claim 4 of the present application provides a lighting fixture characterized in that, in the lighting fixture body according to any one of claims 1 to 3, a lamp is attached to the socket portion. [Brief explanation of the drawings]

[0008] [Figure 1] A perspective view showing the lighting fixture body. [Figure 2] FIG. 10 is a diagram showing the lighting fixture body with the socket portion and the annular holding portion separated. [Figure 3] FIG. 10A is a cross-sectional view of the stay portion and the annular holding portion, and FIG. 10B is a diagram illustrating a state in which the clamp portion is deflected and deformed to reduce its diameter. [Figure 4] 10A and 10B are diagrams showing the configuration of a gear plate of the stay portion (including a locking portion on the back surface) and a gear groove recessed into the annular holding portion. DETAILED DESCRIPTION OF THE INVENTION

[0009] A lighting fixture body 1 according to one embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in Fig. 1, the lighting fixture body 1 of this embodiment comprises a mounting and fixing part 2 that can be attached and detached to a workbench or the like with a spring-loaded clip, a stay part 3 erected above the mounting and fixing part 2, an annular holding part 4 that is supported at the tip of the stay part 3 so as to be able to swing, and a substantially cylindrical socket part 5 whose outer periphery is partially rotatably held by the annular holding part 4. The stay part 3 is rotatable relative to the mounting and fixing part 2, as shown by arrow A in Fig. 1, and a click mechanism with a ball interposed therebetween is provided to provide a sense of detent in the rotation operation.

[0010] 1 and 2, the stay 3 is a support member erected on the mounting and fixing part 2, and has a bifurcated portion made up of a pair of left and right arm portions 32, 33 extending upward from a square base end 31 connected to the mounting and fixing part 2. A threaded portion 34b protruding from an operation portion 34a of an operation knob 34 (described later) is installed between the tips of the bifurcated portion, and the annular holding part 4 is supported swivelably via the threaded portion 34b. The stay 3 is made of a material (e.g., resin or metal) that ensures rigidity with respect to the mounting and fixing part 2, while having elasticity that allows the bifurcated portions to bend slightly inward in response to the tightening force of the threaded portion 34b.

[0011] As shown in FIGS. 2 and 3(a), the annular holding portion 4 has a pair of opposing pieces 42, 43 located radially outward of a generally annular clamping portion 41, and these pieces 42, 43 are configured to be openable and closable. The annular holding portion 4 is configured such that tip portions 42a, 43a of the pieces 42, 43 are in contact with each other, while base portions 42b, 43b extending from the tip portions toward the clamping portion 41 are spaced apart. When the operating knob 34 is tightened, the clamping portion 41 is flexibly deformed so that the base portions 42b, 43b approach each other, as indicated by the white arrows in FIG. 3(b), thereby reducing its diameter and closely fitting the outer periphery of the socket portion 5. The inner periphery of the clamping portion 41 may be provided with a lining (e.g., an elastic sheet, fine ribs / notches, or a sandblasted surface) to increase the coefficient of friction.

[0012] The operation knob 34 can be tightened via a threaded portion 34b and a nut portion 34c threaded thereto to clamp the two halves 42, 43 of the annular holder 4, which is disposed between the two forked portions of the stay portion 3. When the user tightens the operation knob 34, the two forked portions bend inward, engaging the gear grooves of a rotary click mechanism (described later). This fixes the desired pivot angle in the direction indicated by arrow B in FIG. 1 , and the clamp portion 41 contracts in diameter to clamp the outer circumferential surface of the socket portion 5, creating a sliding resistance between them. This sliding resistance restricts rotation of the socket portion 5 in the direction indicated by arrow C in FIG. 1 , making it difficult to rotate. When necessary, the pivot angle and rotation angle can be manually readjusted by loosening the operation knob 34.

[0013] As shown in Figures 1 and 2, the socket 5 is generally cylindrical overall and includes a main body 51 having a lamp base 51a at one end and a power cord outlet 51b, a power outlet 51c, and a power switch 51d (Figure 4) protruding from its outer periphery, and a disk-shaped end plate 52 (which may include a lifting member, either integrally or separately, as shown in the figures) screwed to the end opposite the base 51a. A portion of the outer periphery of the main body 51, where the protrusions 51b to 51d are not provided—specifically, a small-diameter portion 51e (Figure 2) that is stepped relative to the rest of the outer periphery—is rotatably held by the clamp 41 of the annular holder 4. The clamp 41 is attached to the main body 51 by being sandwiched between the large-diameter portion 51f of the main body 51 and the edge of the end plate 52, preventing it from coming off. This allows the orientation of the power cord outlet 51b and the power outlet 51c to be rotated in the outer circumferential direction as needed while maintaining the lighting direction of the lamp attached to the socket 5. The standard of the base 51a of the socket 5 is arbitrary, and it can be configured to fit any general base.

[0014] As shown in Figures 2 and 4, gear grooves 35a and 42c are provided on the opposing surfaces of the bifurcated portion (arm portion 32) of the stay portion 3 and the piece portion 42 of the annular holding portion 4. These gear grooves 35a and 42c mesh with each other to form a rotation click mechanism. The stay portion 3 includes a gear plate 35, which has a gear groove 35a on its front surface and a locking protrusion 35b on its back surface, and is locked and secured to the locking groove 32a formed in the arm portion 32. The annular holding portion 4 also has a gear groove 42c recessed into the piece portion 42. Both gear grooves provide a stepped holding force for rotation in the pivot direction, making it less likely that the set angle will shift due to vibration, etc., and providing a clicking sensation during operation. The number of teeth and pitch of the gear grooves can be set appropriately depending on the application.

[0015] In this embodiment, the mounting and fixing part 2 is exemplified as a clip type that clamps using spring force, but it may also be a clamp type, suction cup type, screw vise type, etc. The mounting and fixing part 2 and the stay part 3 may be joined by welding, riveting, screwing, fitting, etc., and durability and holding force may be adjusted by inserting a washer, spring washer, etc. on the opposite side of the oscillating shaft as needed.

[0016] The present invention is not limited to the above-described embodiment and can be modified as needed, for example, by omitting the rotary click mechanism and relying solely on frictional retention; by using a tool-operated control knob (knob + hex nut) for high retention; or by using a double-ring annular retainer with an inner and outer ring for adjustable retention. Furthermore, the placement of the power cord or power outlet around the socket's outer periphery is optional and can be optimized according to the installation environment. After setting the lighting direction, the user can fine-tune the clamping force to achieve the desired balance between maintaining cord orientation and ease of manual resetting.

[0017] According to this embodiment, by tightening a single operation knob, the oscillating angle of the socket part 5 can be fixed and the sliding of the rotation in the circumferential direction can be maintained in an integrated manner, achieving both freedom of power cord / power outlet orientation and stability of lighting direction. The structure is simple, and each component can be easily manufactured using general-purpose processing, molding, and fastening means.

[0018] 1 Lighting fixture body 2 Mounting and fixing part 3 Stay part 31 Proximal end 32 Arm part (forked part) 32a locking groove 33 Arm part (forked part) 34 Operation knob 34a operation section 34b threaded section 34c nut part 35 gear plate 35a gear groove 35b locking protrusion 4 Annular retaining part 41 Clamp section 42 One side 42a tip 42b base end side 42c gear groove 43 One side 43a tip 43b base end side 5 Socket 51 Main body 51a nozzle 51b cord outlet 51c power outlet 51d power switch 51e small diameter section 51f large diameter section 52 End plate

Claims

1. A mounting fixing part; a stay portion provided on the mounting and fixing portion; an annular holding portion swivellably supported on the tip of the stay portion; a substantially cylindrical socket portion, a portion of whose outer circumferential surface is rotatably held by the annular holding portion, and having a power cord or a power outlet on its outer circumferential surface excluding the portion held by the annular holding portion; In a lighting fixture body comprising: By tightening the operation knob provided on the stay portion, The pivot angle of the annular holding portion relative to the stay portion is fixed, and The lighting fixture body is characterized in that the annular holding portion reduces in diameter to tighten the outer peripheral surface of the socket portion, thereby restricting rotation of the socket portion by sliding resistance.

2. the stay portion is a bifurcated support member erected on the mounting and fixing portion, The annular holding portion has a pair of pieces provided radially outwardly facing each other, and these pieces form a generally annular clamp portion that can be opened and closed. The clamping portion is formed such that the tip ends of the pieces are in contact with each other and the base end side is spaced apart from the tip ends, The pair of pieces are sandwiched between the forked portions of the stay portion, and the operation knob is tightened. The bifurcated portion bends inward to fix the swing angle of the annular holding portion, 2. The lighting fixture body according to claim 1, wherein the clamp portion is reduced in diameter to clamp the outer peripheral surface of the socket portion, thereby maintaining rotation of the socket portion by sliding resistance.

3. 3. The lighting fixture body according to claim 2, wherein gear grooves are provided on the opposing surfaces of the forked portion and the one portion to mesh with each other to form a rotation click mechanism.

4. 4. A lighting fixture according to claim 1, wherein a lamp is attached to the socket portion of the lighting fixture body.

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