JP4245744B2 - Desk lamp - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a desk lamp that is fixed to a mounting portion such as a desk.
[0002]
[Prior art]
Generally, a desk lamp is installed on a desk or the like, a stand mounting portion, an arm member having one end attached to the stand mounting portion, and a slender lamp that is mounted on the other end of the arm member via a movable mounting mechanism. And a stored shade.
[0003]
[Problems to be solved by the invention]
Some types of desk lamps fix the stand mounting portion to a mounted portion such as a desk depending on the application. However, when the stand attachment portion is fixed to the attachment portion, the desk lamp cannot be moved to a desired location, and there is a problem that the radiation range in the longitudinal direction of the lamp is limited.
[0004]
An object of the present invention is to provide a table lamp capable of expanding the radiation range in the longitudinal direction of a lamp even if the stand mounting portion is fixed to the mounted portion.
[0005]
Another object of the present invention is to provide a table lamp that can easily slide a shade that houses a lamp in a longitudinal direction with respect to a movable mounting mechanism and that can securely fix the shade to the movable mounting mechanism. .
[0006]
Another object of the present invention is to provide a desk lamp that can suppress the separation of the shade and the movable mounting mechanism greatly even if the contact pressure between the shade and the movable mounting mechanism is too weak.
[0007]
[Means for Solving the Problems]
A table lamp to be improved by the present invention includes a stand mounting portion fixed to a mounted portion such as a desk, an arm member having one end movably attached to the stand mounting portion, and a slender lamp. And a shade attached to the other end of the arm member via a movable attachment mechanism with an opening for irradiating light emitted from the lamp extending along the longitudinal direction of the arm member. The shade here is a cover member that covers or surrounds the lamp of the desk lamp. In the present invention, the movable attachment mechanism includes an attachment mechanism main body, a first attachment structure for attaching the attachment mechanism main body to the other end of the arm member, and a shade with a predetermined length in the longitudinal direction with respect to the attachment mechanism main body. And a second attachment structure for movably attaching the shade to the attachment mechanism main body so as to slide and rotate at a predetermined angle around the attachment mechanism main body. According to the present invention, the shade slides in the longitudinal direction with respect to the attachment mechanism main body and rotates around the attachment mechanism main body. Therefore, even if the stand mounting portion is fixed to the mounted portion, the radiation range in the longitudinal direction of the lamp can be expanded.
[0008]
The second mounting structure described above is arranged on the rear side of the shade, and is pivotally held by the mounting mechanism main body so as to be rotatable over a predetermined angle range by a slide portion that is slidably combined with the rear side outer wall portion of the shade. And a contact pressure adjusting mechanism that adjusts the contact pressure between the rear outer wall portion of the shade and the slide portion of the mechanism storage case, and is stored in the mechanism storage case. Is preferred. If such a contact pressure adjustment mechanism is provided, the contact pressure adjustment mechanism is adjusted to reduce the contact pressure between the rear outer wall portion of the shade and the slide portion of the second mounting structure, thereby preventing the slide portion. The shade can be easily slid. And if a shade is moved to a desired position with respect to the attachment mechanism main body, the contact pressure adjustment mechanism is adjusted to increase the contact pressure between the rear outer wall portion of the shade and the slide portion of the second attachment structure. . Thereby, the slide part and shade of a 2nd attachment structure can be fixed firmly.
[0009]
The contact pressure adjusting mechanism includes a slide rail member that is fixed to the rear outer wall portion of the shade and extends in a direction parallel to the longitudinal direction of the lamp, a slide holder that is slidably fitted to the slide rail member, and a slide holder. It is possible to construct an attraction force generation mechanism that generates an attraction force to the rear side and that can adjust the force.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a desk lamp according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of the desk lamp of the present embodiment, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. As shown in both drawings, this electric stand includes a stand attachment portion 1, an arm member 3 having one end movably attached to the stand attachment portion 1, and a movable attachment mechanism 5 on the other end of the arm member 3. And attached shade 7. In FIG. 1, the arm member 3 is not shown, and the arm member 3 shown in FIG. 3 is arranged in a portion indicated by a one-dot chain line in FIG. 1.
[0011]
The stand attachment portion 1 has a structure that is fixed to an attachment portion such as a desk by an appropriate means such as a screw, and has a structure in which various electric devices are arranged inside a synthetic resin cover 1a. is doing. An electric wire cord 1b is led out from the stand mounting portion 1, and a switch 1c for lighting a lamp 9 described later is disposed above. An outlet 1d that can be connected to the outside is disposed below the switch 1c.
[0012]
As shown in FIG. 3, the arm member 3 includes a first arm 4 having an elongated rectangular tube shape and a second arm 6 having an elongated rectangular tube shape that is slidably fitted to the first arm 4. Has been. The second arm 6 slides stepwise relative to the first arm 4 by appropriate means. Thereby, the arm member 3 has a structure which can be expanded-contracted in a longitudinal direction. The first arm 4 has a semi-cylindrical mounting portion 4a at one end. The attachment portion 4a is disposed in the stand attachment portion 1 so as to rotate within a predetermined angle range around the center line 4b. Thereby, the arm member 3 is movably attached to the stand attachment portion 1. The second arm 6 has a cylindrical attachment portion 6a at the end opposite to the side where the first arm 4 is located. The other end of the arm member 3 is rotatably attached to the movable attachment mechanism 5 by the attachment portion 6a.
[0013]
As shown in FIGS. 1 and 4, the shade 7 has a box shape in which an elongated fluorescent lamp 9 is accommodated. FIG. 4 is a partial plan view of the shade 7 and a part of the movable attachment mechanism 5 as viewed from the stand attachment portion 1 side. Since the shade 7 has a symmetrical shape in the longitudinal direction, the half of the longitudinal direction is omitted in FIG. The shade 7 includes a synthetic resin-made shade body 11 and a metal reflector 13 which is attached in the shade body 11 and reflects the light of the lamp 9. The shade body 11 includes a curved upper outer wall portion 11a, a pair of side outer wall portions 11b and 11b for mounting both ends of the lamp 9, and a substantially flat rear outer wall portion disposed on the movable mounting mechanism 5 side. 11c and a gripping portion 11d disposed substantially at the center in the longitudinal direction on the opposite side of the movable attachment mechanism 5, and are integrally formed. A cord introduction hole 11c1 for introducing an unillustrated electric wire cord into the shade 7 is formed in the center in the longitudinal direction of the rear side outer wall portion 11c. On the side opposite to the side where the upper outer wall portion 11a of the lamp 9 is located, a substantially rectangular opening 11e is formed that extends along the longitudinal direction of the lamp 9 and emits light emitted from the lamp 9. In this example, elongated transparent plates 15 and 15 that partially close the opening portion 11e are disposed between the grip portion 11d and the pair of lateral side outer wall portions 11b and 11b.
[0014]
The movable attachment mechanism 5 includes an attachment mechanism main body 17, a first attachment structure 19 for attaching the attachment mechanism main body 17 to the other end of the arm member 3, and a second attachment structure 21 for attaching the shade 7 to the attachment mechanism main body 17. And. The attachment mechanism main body 17 includes a substantially cylindrical mechanism storage case holding portion 17a that holds a rotation portion 29 of a second attachment structure 21 to be described later so as to be rotatable about a center line 29b of the rotation portion 29; It has a neck portion 17b to which the base of the mechanism storage case holding portion 17a is attached, and is integrally formed of synthetic resin.
[0015]
The first attachment structure 19 holds the neck portion 17b of the attachment mechanism main body 17 so as to be rotatable and holds the attachment portion 6a of the second arm 6 of the arm member 3 and the neck portion. A substantially cylindrical arm holding portion 19d having a center line 19c perpendicular to the center line 19b of the portion 19a. The neck holding portion 19a holds the neck portion 17b of the attachment mechanism main body 17 so that the attachment mechanism main body 17 rotates about the center line 19b. The arm holding portion 19d holds the attachment portion 6a of the second arm 6 so that the first attachment structure 19 rotates with respect to the second arm 6 about the center line 19c. Accordingly, the first attachment structure 19 is configured to be able to turn the neck portion 17b of the attachment mechanism body 17 with respect to the arm member 3 within a predetermined angle range.
[0016]
The second mounting structure 21 includes a mechanism storage case 23 and a contact pressure adjusting mechanism 25 in which a main part is stored in the mechanism storage case 23. The mechanism storage case 23 includes a slide portion 27 and a rotation portion 29, and is integrally formed of synthetic resin. As shown in detail in FIG. 5 which is a partially enlarged view of FIG. 4 and FIG. 1, the slide portion 27 has a substantially trapezoidal upper wall 27a, and is opposed to the upper wall 27a and has the same shape as the upper wall 27a. A pair of substantially rectangular connecting walls 27c, 27c for connecting the lower wall 27b, the upper wall 27a, and the lower wall 27b on both sides of the mounting mechanism body 17, and a slide wall 27d connected to substantially the center in the longitudinal direction of the lower wall 27b. It consists of and. End portions of the upper wall 27a, the lower wall 27b, and the pair of connecting walls 27c, 27c are arranged so as to come into contact with the rear-side outer wall portion 11c of the shade 7. Thereby, the edge part of the 2nd attachment structure 21 contacts the back side outer wall part 11c of the shade 7 substantially cyclically | annularly. The slide wall 27d has a substantially U-shaped cross-sectional shape surrounding the lower end of the rear outer wall 11c so as to be slidable with the rear outer wall 11c of the shade 7. The rotating portion 29 has a substantially cylindrical shape that is rotatably held by the attachment mechanism body 17 over a predetermined angle range, and has an annular shape provided with a through hole 29a1 through which a rod member 33b described later passes. The partition part 29a is provided.
[0017]
The main part of the contact pressure adjusting mechanism 25 is housed in the mechanism housing case 23 and adjusts the contact pressure between the rear-side outer wall part 11c of the shade 7 and the slide part 27 of the second mounting structure 21 described above. Plays. The contact pressure adjustment mechanism 25 includes a slide rail member 31, a slide member 33, and an operation member 35. The slide rail member 31 is fixed to the rear side outer wall portion 11c of the shade 7 by a screw 37, and is formed of a synthetic resin. More specifically, the slide rail member 31 includes a pair of contact surfaces 31a and 31a that are formed at positions facing the rear outer wall portion 11c with a space therebetween and extend in a direction parallel to the longitudinal direction of the shade 7, A pair of contact surfaces 31a, 31a formed on the rear side, side surfaces 31b facing the pair of contact surfaces 31a, 31a in the thickness direction, and elongated recesses that open in the side surface 31b and extend in a direction parallel to the longitudinal direction of the shade 7 31c. The member to be slid 33 has a slide holder 33a and a rod member 33b. The slide holder 33 a is formed by pressing a metal plate and is slidably fitted to the slide rail member 31. More specifically, the slide holder 33a includes a pair of contact portions 33c and 33c that contact the pair of contact surfaces 31a and 31a of the slide rail member 31, a facing portion 33d that faces the side surface 31b of the slide rail member 31, A pair of connecting portions 33e, 33e for connecting the pair of contact portions 33c, 33c and the facing portion 33d are provided, and the facing portion 33d has a through hole 33f at a position facing the recess 31c formed in the slide rail member 31. Is formed. The rod member 33b is formed of a metal bolt, and is fitted into the concave portion 31c of the slide rail member 31 to engage the opposing portion 33d, and the rod portion 33h that penetrates the through hole 33f of the slide holder 33a. And a male screw portion 33i formed at the end of the rod portion 33h opposite to the head portion 33g. The operation member 35 includes an operation portion 35a that is rotatably disposed at a fixed position outside the second mounting structure 21, and a female screw portion 35b that is screwed into the male screw portion 33i of the rod member 33h. . Further, the contact pressure adjusting mechanism 25 is provided with a separation suppressing mechanism 26. The separation suppressing mechanism 26 includes a stopper member 26a fixed at a position behind the partition wall portion 29a of the rotating portion 29 of the mechanism storage case 23 and a front side of the male screw portion 33i of the rod member 33b, and a partition wall portion 29a. And a spring member 26b disposed in a compressed state between the stopper member 26a and a sliding portion 27 of the rear outer wall portion 11c of the shade 7 and the second mounting structure 21 by the contact pressure adjusting mechanism 25. Even if the contact pressure is too weak, it plays the role of preventing the shade 7 and the slide part 27 from separating greatly. In this example, the stopper member 26a is configured by a nut screwed into the male thread portion 33i. However, the stopper member 26a is not necessarily fixed to the rod member 33b, and is configured by a washer or the like loosely fitted to the rod member 33b. May be. In this example, the rod member 33b, the stopper member 26a, the spring member 26b, and the operation member 35 constitute an attractive force generating mechanism.
[0018]
Next, a method of sliding the shade 7 by adjusting the contact pressure between the rear side outer wall portion 11c of the shade 7 and the slide portion 27 of the second mounting structure 21 using the contact pressure adjusting mechanism 25 will be described. First, the operating part 35a of the operating member 35 is turned to loosen the threaded engagement between the female threaded part 35b and the male threaded part 33i of the rod member 33b, and the shade fixed to the slide rail member 31 via the rod member 33b and the slide holder 33a. 7 is moved in a direction away from the second mounting structure 21 side, and the contact pressure between the rear outer wall portion 11c of the shade 7 and the slide portion 27 of the second mounting structure 21 is lowered. Thereby, the shade 7 slides easily with respect to the slide part 27, and the rod member 33b and the slide holder 33a slide with respect to the slide rail member 31. Even if the contact pressure between the rear outer wall portion 11c and the slide portion 27 is weakened by mistake, the spring member 26b of the separation suppressing mechanism 26 is applied to the shade 7 via the stopper member 26a, the rod member 33b, and the slide holder 33a. Since the fixed slide rail member 31 is biased toward the second mounting structure 21 side, the shade 7 and the slide portion 27 can be prevented from being largely separated. Therefore, it can prevent that the shade 7 falls below from the position of the 2nd attachment structure 21, and the electric wire cord and the shade 7 which are not illustrated extending between the shade 7 and the 2nd attachment structure 21 are damaged. Next, when the shade 7 is slid and arranged at a desired position, the operation portion 35a of the operation member 35 is turned to tighten the screw engagement between the female screw portion 35b and the male screw portion 33i of the rod member 33b, and the rod member 33b and The shade 7 fixed to the slide rail member 31 via the slide holder 33a is moved to the second mounting structure 21 side, and the contact pressure between the rear side outer wall portion 11c and the slide portion 27 is increased. Thereby, the movable attachment mechanism 5 and the shade 7 are firmly fixed.
[0019]
【The invention's effect】
According to the present invention, the shade slides in the longitudinal direction with respect to the attachment mechanism main body and rotates around the attachment mechanism main body. Therefore, even if a stand attachment part is fixed to a to-be-attached part, the radiation range in the longitudinal direction of a lamp can be expanded. Moreover, since the contact pressure adjusting mechanism for adjusting the contact pressure between the rear outer wall portion of the shade and the slide portion of the second mounting structure is provided, the shade for storing the lamp can be easily moved in the longitudinal direction with respect to the movable mounting mechanism. And the shade can be securely fixed to the movable mounting mechanism.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a table lamp according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a partial cross-sectional view of an arm member used in the table lamp according to the embodiment of the present invention.
FIG. 4 is a partial plan view of the shade and a part of the movable attachment mechanism as seen from the stand attachment portion side.
FIG. 5 is a partially enlarged view of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stand attachment part 3 Arm member 5 Movable attachment mechanism 7 Sed 9 Lamp 11c Rear side outer wall part 11e Opening part 17 Attachment mechanism main body 17a Mechanism accommodation case holding part 17b Neck part 19 First attachment structure 21 Second attachment structure 23 Mechanism accommodation Case 25 Contact pressure adjusting mechanism 26 Separation suppressing mechanism 27 Slide portion 29 Rotating portion 31 Slide rail member 33 Slide member 33a Slide holder 33b Rod member 35 Operation member 35a Operation portion 35b Female thread portion

Claims (4)

A stand mounting portion fixed to a mounted portion such as a desk;
An arm member having one end movably attached to the stand mounting portion;
A sled that houses an elongated lamp and has an opening that extends along the longitudinal direction of the lamp to irradiate light emitted from the lamp, and is attached to the other end of the arm member via a movable mounting mechanism; A desk lamp comprising:
The movable attachment mechanism includes an attachment mechanism main body, a first attachment structure for attaching the attachment mechanism main body to the other end of the arm member, and the shade with respect to the attachment mechanism main body is predetermined in the longitudinal direction. A second mounting structure that slidably moves and attaches the shade to the mounting mechanism main body so as to rotate a predetermined angle around the mounting mechanism main body ;
The second mounting structure is disposed on the rear side of the shade,
A mechanism storage case having a slide portion slidably combined with a rear side outer wall portion of the shade and a rotation portion that is rotatably held by the attachment mechanism body over a predetermined angle range;
A table lamp comprising: a contact pressure adjusting mechanism that is stored in the mechanism storage case and adjusts a contact pressure between the rear outer wall portion of the shade and the slide portion of the mechanism storage case . The contact pressure adjusting mechanism is
A slide rail member fixed to the rear outer wall portion of the shade and extending in a direction parallel to the longitudinal direction ;
A slide holder slidably fitted to the slide rail member;
The desk lamp according to claim 1 , comprising a pulling force generating mechanism that generates a force for pulling the slide holder toward the rear side of the shade and that can adjust the force. The attachment mechanism main body includes a mechanism storage case holding portion that rotatably holds the rotating portion of the mechanism storage case, and a neck portion that is provided integrally with the mechanism storage case holding portion,
Wherein the first mounting structure, an electric stand according to claim 1 having a structure for holding so as to rotate within a predetermined angular range the neck. The slide rail member is formed at a position facing the rear outer wall portion of the shade with a space therebetween and extends in a direction parallel to the longitudinal direction, and rearward of the pair of contact surfaces A side surface that is formed on the side and faces the pair of contact surfaces in the thickness direction; and an elongated recess that opens in the side surface and extends in a direction parallel to the longitudinal direction.
The slide holder includes a pair of contact portions that contact the pair of contact surfaces, a facing portion that faces the side surface, a pair of connecting portions that connect the pair of contact portions and the facing portion, and It has a through hole at a position facing the elongated recess formed in the slide rail member of the facing portion,
The attraction force generation mechanism is:
A head that is fitted in the elongated recess and engages with the facing portion, a rod portion that penetrates the through hole, and a male screw portion that is formed at the end of the rod portion opposite to the head portion. A rod member;
Even if the contact pressure between the rear outer wall portion of the shade and the slide portion of the mechanism storage case is reduced by the contact pressure adjusting mechanism, the rear outer wall portion and the slide portion are prevented from greatly separating. A separation suppression mechanism;
An operation member including at least an operation screw, which is rotatably arranged outside the mechanism storage case and includes a female screw portion screwed into the male screw portion of the rod member;
The separation suppressing mechanism includes a partition wall provided in the mechanism housing case and provided with a through-hole through which the rod member passes, and a rear side of the rod part and a front side of the male screw part. desk lamp of claim 2, the stopper member arranged at the position of, characterized by comprising a spring member disposed in a compressed state between the stopper member and the partition wall portion.

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