TWI503503B - Illumination device - Google Patents

Description

Lighting device

The invention relates to a lighting device, in particular an adjustable lighting device having a plurality of lamp bodies.

Table lamps have been widely used as lighting devices in daily life, work and study. Most of the existing desk lamps have the following structure: a lamp body, a link and a lamp holder that can be deformed or retractable. The lamp body portion is connected to the lamp holder by the link that can be deformed or retractable. By adjusting the deformation size and direction of the connecting rod, the illumination direction and illumination range of the table lamp are changed. However, the manner of adjusting the desk lamp is based on the fact that the connecting rod itself has the flexibility, and the long-term use causes the expansion and contraction of the connecting rod to deteriorate, and cannot accurately stay at the predetermined position, thereby affecting the performance and the service life of the desk lamp.

In view of this, the present invention provides an illumination device that facilitates adjustment of the illumination direction and illumination range of a portion of the lamp body.

The lighting device includes an adjustment mechanism, at least one pair of lamp body portions rotatably coupled to the adjustment mechanism, and a support portion for supporting the illumination device. The support portion includes at least one drive rod movable up and down relative to the support portion. The adjusting mechanism includes a gear member and a rotating member rotatably coupled to the gear member. The at least one pair of lamp bodies are rotatably coupled to opposite sides of the gear member, and the rotating member is rotatably coupled to the at least one driving rod. When the at least one transmission rod moves up and down relative to the support portion, the at least A transmission rod drives the gear member to rotate relative to the rotating member to rotate the at least one pair of lamp bodies rotatably coupled to opposite sides of the gear member.

In use, the user can adjust the illumination direction and illumination range of part of the lamp body of the illumination device by the adjustment mechanism.

100‧‧‧Lighting device

10‧‧‧ lamp holder

110‧‧‧Adjustment

120‧‧‧ upper surface

20‧‧‧ bracket

210‧‧‧Cylinder section

220‧‧‧Support

230‧‧‧Support

240‧‧‧Perforation

250‧‧‧Transmission rod

30‧‧‧Light body part

310‧‧‧Circular through hole

40‧‧‧Adjustment agency

410‧‧‧ Gear parts

420‧‧‧Connecting parts

430‧‧‧Rotating parts

432‧‧‧ Sockets

434‧‧‧Connecting Department

436‧‧‧ pivot hole

440‧‧‧Support rod

441‧‧‧ Connecting rod

443‧‧‧ cam

445‧‧‧Semi-circular gear face

447‧‧‧Axis hole

412‧‧‧ Gears

422‧‧‧ Positioning block

426‧‧‧Bump

4120‧‧‧ gear face

4122‧‧‧Incision

4124‧‧‧ bottom end

4126‧‧‧ Groove

4128‧‧‧cut plane

4130‧‧‧First gear surface

4132‧‧‧second gear face

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a lighting device of the present invention including an adjustment mechanism.

Figure 2 is a partially exploded view of the lighting device of Figure 1.

Figure 3 is a partial enlarged view of another perspective of the adjustment mechanism shown in Figure 2.

Fig. 4 is a view showing the state of the adjustment mechanism of the illuminating device after adjustment shown in Fig. 1.

Figure 5 is a schematic illustration of another perspective of the illumination device of Figure 4.

Referring to FIGS. 1 and 2, the lighting device 100 includes a lamp holder 10, a bracket 20, a lamp body portion 30, and an adjustment mechanism 40. The lamp body portion 30 is rotatably coupled to the bracket 20 by the adjustment mechanism 40. The bracket 20 is fixed to the socket 10 for supporting the lamp body portion 30 and the adjusting mechanism 40.

The body portion 30 includes at least two lamp bodies. In this embodiment, the lamp body portion 30 includes two pairs of lamp bodies 320 and 330. The lamp body 320 is substantially T-shaped, and the lamp body 330 is substantially square. The two pairs of lamp bodies 320, 330 are assembled into a substantially square shape. It can be understood that in other embodiments, the lamp bodies 320 and 330 may have other shapes, for example, each of a trapezoidal shape, a teardrop shape, or a fan shape.

The lamp holder 10 is substantially in the shape of a truncated cone for contacting with a support (such as a table top, not shown). . The socket 10 further includes four adjustment members 110 and a driving device (not shown) for driving the adjustment mechanism 40. The driving device is disposed in the lamp holder 10 and connected to the adjusting mechanism 40. The four adjusting members 110 are disposed on the upper surface 120 of the socket 10 and connected to the driving device. The drive can be a hydraulic drive or a pneumatic drive. The user can control the driving device to drive the adjustment mechanism 40 by the four adjusting members 110 to adjust the angles of the lamp bodies 320 and 330, respectively.

The bracket 20 is fixed to the socket 10. The bracket 20 includes a cylindrical portion 210, a support 220, four support members 230 disposed on the support 220, and four transmission rods 250. The holder 220 is fixed to an end of the cylindrical portion 210 away from the socket 10. The holder 220 is also provided with four perforations 240 that are parallel to the axis of the cylindrical portion 210. The four perforations 240 pass through the cylindrical portion 210 and communicate with the interior of the socket 10. Each of the perforations 240 houses a drive rod 250. The transmission rod 250 is connected to the driving device and the adjusting mechanism 40 through the through hole 240. The drive device is configured to drive the drive rod 250 up and down relative to the perforation 240 to change the length of the drive rod 250 extending beyond the perforation 240. When the transmission rod 250 is not driven by the driving device, the length of the transmission rod 250 extending beyond the perforation 240 is constant, and at this time, the transmission rod 250 is used to support the adjustment mechanism 40. When the transmission rod 250 is subjected to the driving force of the driving device, the transmission rod 250 moves upward or downward, and the length of the protruding through hole 240 changes under the driving of the driving device. When the length of the drive rod 250 extends beyond the bore 240, the drive rod 250 forces the adjustment mechanism 40 to rotate in the plane of the drive rod 250 that moves up and down.

The adjustment mechanism 40 includes a gear member 410, a rotating member 430, and a support rod 440 that is engaged on opposite sides of the gear member 410. The rotating member 430 is rotatably coupled to the gear member 410. The two pairs of lamp bodies 320 and 330 are respectively fixed to two pairs of mutually symmetric support bars 440. When the gear member 410 rotates relative to the rotating member 430, the gear member 410 drives a pair The symmetrical support bar 440 rotates to adjust the angle of the lamp body 320 or 330. For convenience of description, in the embodiment, the number of the rotating member 430 and the supporting rod 440 is four. It can be understood that in other embodiments, the number of the rotating member 430 and the supporting rod 440 is not limited to four, for example, one. Referring to FIG. 3 together, the gear member 410 includes a connecting member 420 and two substantially C-shaped gears 412. The connecting member 420 includes a substantially square positioning block 422 and four cylindrical studs 426 fixed to the positioning block 422. The four studs 426 are coplanar and are symmetrically symmetrical about the positioning block 422. The two gears 412 are crossed. Each of the gears 412 is provided with a slit 4122. The bottom end faces 4124 of the two slits 4122 are coplanar. Each of the bottom end faces 4124 defines a centrally wide groove 4126. The two grooves 4126 are crisscrossed and define a receiving groove (not shown) for receiving and fixing the connecting member 420. Preferably, the receiving groove is in interference fit with the connecting member 420. The gear 412 is an external gear. The gear face 4120 of each gear 412 is cut along a portion parallel to the other gear to form two tangent planes 4128 that are parallel to one another and symmetrically distributed relative to the other gear 412. The two tangential planes 4128 divide the gear face 4120 into two generally arcuate first gear faces 4130 and a generally semi-circular second gear face 4132.

Each of the rotating members 430 includes a sleeve portion 432 and a connecting portion 434 fixed to the socket portion 432 . The socket portion 432 is curved and rotatably sleeved on the cylindrical boss 426. A pivot hole 436 is defined in one end of the connecting portion 434 away from the socket portion 432 . The connecting portion 434 is pivotally connected to a transmission rod 250 by the pivot hole 436 .

The support rod 440 is substantially L-shaped. Each of the support rods 440 includes a substantially cylindrical connecting rod 441 and a cam 443 fixed to one end of the connecting rod 441. The cam 443 is substantially semi-circular. The cam 443 includes a semi-circular gear face 445. The diameter of the cam 443 is larger than the diameter of the connecting rod 441. The cam 443 also defines a shaft hole 447. The support The rod 440 is rotatably coupled to the support member 230 by the shaft hole 447.

Each of the lamp bodies 30 defines a circular through hole 310. The lamp body 30 is fixed to one end of the connecting rod 441 away from the cam 443 by the circular through hole 310.

When assembled, the rotating members 430 are respectively sleeved on the cylindrical studs 426. The rotating member 430 is rotatably coupled to the transmission rod 250 by a pivot hole 436. The support rod 440 is rotatably coupled to the support 230 and has its semi-circular gear face 445 in contact with the tangent plane 4128 of the gear member 410. Finally, the lamp bodies 320 and 330 are fixed to the support bar 440.

Please refer to FIG. 4, FIG. 5 and FIG. 6 together. After the assembly, when the user operates the adjusting member 110 to control the driving device to pull down the corresponding driving rod 250 (hereinafter referred to as the first driving rod) of the right lamp body 330, the length of the first driving rod extending through the through hole 240 becomes shorter, and is symmetrical thereto. The length of the transmission rod 250 (hereinafter referred to as the second transmission rod) extending through the through hole 240 becomes long, thereby forcing the gear member 410 to rotate clockwise along the straight line A. When the second gear face 4132 of the gear member 410 corresponding to the right lamp body 330 is engaged with the gear face 445 of the support lever 440, the support lever 440 that drives the right lamp body is rotated upward, so that the right lamp body 330 is lifted upward. At the same time, the gear member 410 rotates upward away from the first gear face 4130 of the right lamp body 330 and meshes with the gear face 445 of the right support bar 440, thereby causing the left lamp body 330 to rotate downward.

Since the other two transmission rods 250 (hereinafter referred to as the second pair of transmission rods) are not subjected to the force of the driving device, the length of the protruding through holes 240 is not changed. At this time, the second pair of transmission rods are used to support the gears. Item 410. When the gear member 410 is rotated clockwise along the straight line A, since the gear face of the support bar 440 on the straight line A is still in contact with the tangent plane 4128 of the gear member 410, the lamp body 320 corresponding to the support bar 440 on the straight line A remains stationary. . Since the gear member 410 rotates clockwise along the straight line A, the connection is made to The rotating member 430 of the second pair of transmission rods 250 rotates relative to the cylindrical boss 426 of the connecting member 420.

Similarly, when the user operates the adjusting member 110 to control the driving rod 250 corresponding to the driving device to pull down the front/rear lamp body 320, the front/rear lamp body 320 is adjusted, and the lamp body 330 remains unchanged.

Therefore, by applying a force to the adjustment mechanism 40, the angle of the lamp body portion 30 can be adjusted to illuminate the illumination direction and illumination range of the device 100.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.

100‧‧‧Lighting device

10‧‧‧ lamp holder

110‧‧‧Adjustment

120‧‧‧ upper surface

20‧‧‧ bracket

30‧‧‧Light body part

40‧‧‧Adjustment agency

Claims (10)

A lighting device comprising an adjustment mechanism, at least one pair of lamp body portions rotatably coupled to the adjustment mechanism, and a support portion for supporting the adjustment mechanism and the at least one pair of lamp body portions, the improvement being: the support The portion includes at least one upper and lower movable transmission rod, the adjustment mechanism includes a gear member and a rotating member rotatably coupled to the gear member, the at least one pair of lamp bodies being rotatably coupled to opposite sides of the gear member, the rotating member Rotatablely coupled to the at least one transmission rod, the at least one transmission rod drives the gear member to rotate relative to the rotating member when the at least one transmission rod moves up and down relative to the support portion, thereby driving the at least one pair of lamps to rotate. The illuminating device of claim 1, wherein the gear member comprises two criss-crossing gears, and any one of the gears is symmetrically distributed with respect to the other gear, and the at least one pair of lamp bodies are rotatably engaged with one of the gears. The opposite sides of the gear. The illuminating device of claim 2, wherein each of the gears is formed with two tangential planes that divide the gear into two sections of the first gear surface and a length of the second gear surface. The illuminating device of claim 2, wherein the adjusting mechanism further comprises at least one pair of support rods, the at least one pair of support rods are rotatably coupled to the support portion, and the at least one pair of support rods are rotatably engaged The opposite sides of a gear, the at least one pair of lamps are rotatably coupled to the gear member by the at least one pair of support rods. The illuminating device of claim 4, wherein each of the support rods includes a connecting rod and a cam fixed to one end of the connecting rod, the cam is provided with a gear surface, and the supporting rod is rotatably engaged by the gear surface The gear member is respectively connected to one end of the connecting rod away from the cam. The lighting device of claim 2, wherein the gear member further comprises a connecting member. The rotating member is rotatably coupled to the connecting member. The illuminating device of claim 6, wherein the rotating member comprises a socket portion, and the rotating member is rotatably sleeved to the connecting member by the socket portion. The illuminating device of claim 1, wherein the rotating member and the at least one pair of lamp bodies connected to opposite sides of the rotating member are in the same plane when the at least one driving rod moves up and down relative to the supporting portion Rotating, the at least one transmission rod moves up and down relative to the support portion in a plane in which the rotating member and the at least one pair of lamps rotate. The illuminating device of claim 1, wherein the supporting portion further comprises a lamp holder and a bracket fixed to the lamp holder, wherein the at least one pair of lamp bodies are rotatably connected to the bracket through the adjusting mechanism. The illuminating device of claim 9, wherein the bracket is provided with a through hole, the through hole passes through the bracket and communicates with the inside of the socket, and the at least one transmission rod is received in the through hole and can be opposite to the through hole motion.