WO2012116479A1

WO2012116479A1 - Lamp having rotatable lamp head

Info

Publication number: WO2012116479A1
Application number: PCT/CN2011/001153
Authority: WO
Inventors: 娄小辉; 林万炯
Original assignee: 宁波赛尔富电子有限公司
Priority date: 2011-02-28
Filing date: 2011-07-12
Publication date: 2012-09-07
Also published as: CN102155654B; CN102155654A

Abstract

Disclosed is a lamp having a rotatable lamp head, which comprises a lamp base (2) and a lamp head (1), with a rotating shaft (3) being connected between the lamp head and the lamp base, which rotating shaft includes four shaft heads (31) disposed in a cross shape with each shaft head having a circular slot (311) opened in the circumferential direction of the shaft head, each circular slot being arranged with a snapping fastener (4) rotatable with respect to the shaft head; the two snapping fasteners arranged opposite to one another in the first line of the cross shape of the rotating shaft are fixedly connected to the bottom of the lamp head, and the two snapping fasteners arranged opposite to one another in the other line of the cross shape of the rotating shaft are fixedly connected to the lamp base arranged opposite to the bottom of the lamp head. Rotation of the lamp head with respect to the lamp base achieved by utilizing the rotating shaft with the cross-shaped structure enables the lamp head to be adjusted with respect to the lamp base at any angle in a range of 360 degrees, enlarging the range of rotation adjustment of the lamp head to make the illuminating direction more flexible; it can prevent the power supply wire from becoming tied in knots due to the rotation of the lamp head; and it also provides for a compact structure with a reduced lamp volume.

Description

Lamp capable of rotating lamp holder

Technical field

The invention relates to a luminaire, in particular to a luminaire in which the lamp cap can be rotated. Background technique

In order to achieve flexible adjustment of the illumination orientation and improve the application range and flexibility of the luminaire, the lamp caps of many existing luminaires are designed to be rotatable.

For example, the Chinese utility model patent "Adjustable Angle LED Spotlight" with the patent number ZL200820201330.7 discloses an adjustable angle LED spotlight with continuously adjustable LED light angle and uniform illumination, but the spotlight mounting structure in the patent. More complicated, the adjustment of the illumination angle is realized by the angle adjustment plate, and the continuous adjustment of the illumination angle of the LED lamp cannot be realized, so that the angle adjustment of the LED lamp is not flexible enough.

In addition, for the illuminating lamp with the lamp cap, when the lighting direction of the lamp cap is adjusted, the reliable positioning of the lamp cap is also ensured to prevent the lamp cap from rotating freely. For example, the Chinese utility model "Zurning Rotating Positioning Structure Device" of the patent number ZL200920133078.5 relates to a rotating positioning structure device for a lamp, comprising a lamp body composed of a ball head and a lamp holder integrally formed with the ball head, and a center is provided. a fixing seat having a bottom end nested on the outer surface of the ball head and a circular fixing cover fixedly connected with the lower end of the fixing seat, a circular elastic member is disposed between the lower end of the fixing seat and the ball head; the lower end of the fixing cover is nested in the ball The outer surface of the lower part of the head is in close contact with the ball head, and the ball head is rotatably and positionally connected by the elastic member and the fixed cover. Although the patent can realize the angle adjustment of the lamp in the range of 360 degrees, the rotating structure of the lamp in the patent is realized by the cooperation between the ball cap and the fixing seat, the structure of the ball cap is troublesome, and in order to assemble the connection, it is necessary The cavity for accommodating the ball head is left in the fixing seat, which makes the overall volume of the lamp not small, and is not suitable for the occasion where the installation space is small. Summary of the invention

The technical problem to be solved by the present invention is to provide a luminaire capable of rotating a lamp body which is compact in structure, simple in installation, and small in size, in view of the above state of the art.

The technical solution adopted by the present invention to solve the above technical problem is that the lamp capable of rotating the lamp cap comprises a lamp holder and a lamp cap rotatably received in the lamp holder, characterized in that: between the lamp cap and the lamp holder Connected by a rotating shaft, the rotating shaft comprises four shaft heads arranged in the same plane and distributed in a cross shape, each of the shaft heads has an annular groove extending along a circumferential direction of the shaft head, and each annular groove is provided with a buckle that is rotatable relative to the shaft head, and two oppositely disposed snaps on the cross-shaped first straight line of the rotating shaft are fixedly coupled to the bottom of the base, Two oppositely disposed snaps on the other line of the cross-shaped shaft of the rotating shaft are fixedly coupled to the lamp holder disposed opposite the bottom of the base.

In order to facilitate the installation and disassembly, the buckle is preferably a U-shaped elastic buckle, the u-shaped opening of the buckle is exactly the same as the outer diameter of the annular groove of the shaft; Two oppositely disposed snap U-shaped openings on the first straight line of the glyph are oriented toward the bottom of the base, and two first slots are provided at the bottom of the base for respectively corresponding and corresponding snap fits. Two oppositely-shaped snap u-shaped openings on the other line of the cross-shaped rotating shaft face the lamp holder, and the inner bottom surface of the lamp holder is provided with two second and second correspondingly fixed latches Card slot. Therefore, the buckle can be directly fastened in the annular groove of the shaft head during installation, and the open end of the buckle can be inserted into the corresponding card slot, and the connection is simple and convenient.

In view of the reliability of the plug connection, preferably, two sides of the u-shaped side of the buckle are formed with two outwardly projecting and spaced-apart limiting ribs. The two spaced-apart limiting ribs can respectively act as upper and lower limits after the buckle is inserted into the card slot, thereby effectively preventing the buckle from coming out of the card slot.

Preferably, the lamp cap comprises a lamp cover, a lens, a circuit board and a heat dissipation plate, wherein the lens, the circuit board and the heat dissipation plate are housed in the lamp cover; the circuit board is provided with an LED chip, the lens Fixedly disposed on one side of the circuit board and opposite to the LED chip, the heat dissipation plate is fixedly disposed on the other side of the circuit board, and the first card slot is opened on the heat dissipation plate, A through hole for the LED chip power supply wire is opened on the heat dissipation plate. Therefore, the lamp cap as a whole can be replaced according to the difference in illumination intensity and power. As long as the lamp cap and the buckle are separated, the lamp cap can be removed and replaced, and the connection between the lamp socket and the rotating shaft is not affected, and the operation is more convenient.

In order to enlarge the range of motion of the rotating shaft, so that the lamp cap has a larger adjustment angle, as a further preferred embodiment, the heat dissipating plate further defines a groove between the two first card slots, and the rotating shaft located at the top of the groove Both ends just enter the groove. Therefore, when the lamp cap rotates, both ends of the rotating shaft corresponding to the groove can enter the groove and abut against the circuit board connected to the heat dissipation plate, so that the movable range of the two ends of the rotating shaft is increased, thereby expanding the lamp cap. The amplitude of the rotation.

Further preferably, the lamp holder is further connected with a fixing cover, the fixing cover has a T-shaped cross section, and includes an annular end surface and an axial surface integrally formed perpendicularly to the end surface, wherein A plurality of insertion holes are circumferentially distributed on the axial surface of the fixing cover, and an elastic card portion that can be inserted and fixed with the insertion hole is disposed on the inner circumferential surface of the socket. Considering that the lamp holder may need to be completely embedded in the mounting hole, the fixing cover can play the role of axial limitation, and the fixing cover can be selected with different materials and colors to ensure the environment of the lamp and the mounting hole.

In order to achieve a tight fit between the shaft holes, preferably, the outer peripheral surface of the socket is provided with two oppositely disposed slots which are opened in the axial direction, and the slots are provided with elasticities which are convex outward in the radial direction. card. The elastic card enables the lamp holder to be installed in the mounting hole to support and ensure a reliable and fixed connection between the lamp holder and the mounting hole.

Compared with the prior art, the invention has the advantages that the rotating shaft of the cross-shaped structure is used to realize the lamp cap relative to the lamp The rotation of the seat allows the lamp head to be adjusted at any angle with respect to the lamp holder in a range of 360 degrees, which expands the rotation adjustment range of the lamp cap, making the illumination orientation more flexible, and the 360 degree adjustment mode is not a rotation around a fixed axis, but It is based on the rotation in the plane where the cross-shaped rotating shaft is located, which can effectively prevent the power supply wire from being knotted due to the rotation of the lamp cap; Moreover, the shaft of the cross-shaped rotating shaft is provided with a buckle, and the lamp cap and the lamp holder are fixed by the buckle In order to realize the indirect connection with the rotating shaft, the connection between the lamp cap and the lamp holder is simple and convenient, and the assembly and maintenance are easier and quicker. Moreover, since the rotating shaft of the cross-shaped structure is adopted, the lamp cap is only opposite to the lamp holder. It needs to have a small space to realize the rotation, and the structure is more compact, which greatly reduces the volume of the lamp, so that the lamp can be much smaller than the lamp of the existing rotatable lamp head, which not only saves materials but also reduces the cost. DRAWINGS

FIG. 1 is a schematic diagram of a three-dimensional structure of an embodiment of the present invention.

FIG. 2 is a second schematic structural view of the embodiment of the present invention.

Figure 3 is an exploded perspective view of an embodiment of the present invention.

4 is a schematic view showing the assembly structure of a lamp cap according to an embodiment of the present invention.

Figure 5 is a partial assembly cross-sectional view of the embodiment of the present invention (coupling of the lamp cap and the rotating shaft).

Figure 6 is a partial assembly cross-sectional view of the embodiment of the present invention (lamp holder and shaft engaging).

FIG. 7 is a schematic structural view of a rotating shaft according to an embodiment of the present invention.

FIG. 8 is a schematic structural view of a buckle according to an embodiment of the present invention. detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 8 , in the embodiment of the present invention, the lamp includes a lamp cap 1, a lamp holder 2 and a rotating shaft 3, wherein the lamp cap 1 and the lamp holder 2 are connected by a rotating shaft 3, and the lamp cap 1 can be rotated. The ground content is placed in the lamp holder 2.

The lamp cap 1 of the embodiment is illuminated by an LED light source. The lamp cap 1 includes a lamp cover 11, a lens 12, a circuit board 13 and a heat sink 14. The lens 12, the circuit board 13 and the heat sink 14 are assembled in the lamp cover 11 after assembly; An LED chip is disposed on the board 13 . The lens 12 is fixedly disposed on one side of the circuit board 13 and opposite to the LED chip. The heat dissipation board 14 is fixedly disposed on the other side of the circuit board 13 . The heat dissipation board 14 defines a through hole 143 . A power supply line 7 for supplying power to the LED chip on the circuit board 13 passes through the through hole 143. The rotation of the base 1 of the present embodiment is based on the rotation in the plane of the cruciform shaft 3 instead of the rotation about the rotary shaft, thereby effectively preventing the power supply wire 7 from being knotted during the rotation of the base 1; For example, the lamp cap 1 can adopt various structures in the prior art. The lamp cap provided in this embodiment is only one of them. The lamp cap can be assembled or matched as a whole and the lamp holder after assembly, and is disassembled and maintained. Very convenient.

In this embodiment, the rotating shaft 3 connecting the lamp cap 1 and the socket 2 is a universal rotating shaft of a cross-shaped structure, and the rotating shaft 3 The utility model comprises four shaft heads 31 which are integrally formed in the same plane, and the four shaft heads 31 are opposite to each other to form two perpendicularly intersecting straight lines, and each of the shaft heads 31 has a circumferential direction along the shaft head 31. An annular groove 311, each annular groove 311 is provided with a buckle 4 that is rotatable relative to the shaft head 31;

The buckle 4 is a U-shaped elastic buckle in cross section, and the U-shaped opening of the buckle 4 is exactly the same as the outer diameter of the annular groove 311 of the shaft head 31. Therefore, when the buckle 4 sets The shaft head 31 can be clamped after the shaft head 31, and the relative rotation between the shaft head 31 and the shaft head 31 can be ensured;

The two buckles 4 on the first straight line of the cross-shaped shaft 3 are oppositely disposed, and the U-shaped openings of the two buckles 4 face the heat dissipation plate 14 at the bottom of the lamp cap 1, and the heat dissipation plate 14 is provided with two separate And the corresponding buckle 4 is inserted into the fixed first slot 141; the two buckles 4 located on the other straight line of the cross-shaped shaft 3 are also oppositely disposed, and the U-shaped opening of the two buckles 4 faces the socket 2, on the inner bottom surface of the lamp holder 2 is provided with two second card slots 21 which can be respectively fixed and fixed with the corresponding buckles 4;

In order to improve the connection reliability of the buckle and the card slot, two sides of the U-shaped opening of each buckle 4 are formed with two outwardly convex and spaced-apart limiting ribs 41. When installed, the buckle is buckled. 4 After the corresponding card slot is inserted, the two limiting ribs 41 respectively abut the upper top surface and the lower bottom surface of the corresponding card slot to prevent the buckle 4 from coming out of the card slot.

In this embodiment, the structure of the lamp cap 1 and the lamp holder 2 is respectively connected with the cross-shaped rotating shaft 3 by using the buckle 4 structure, and the buckle 4 is connected with the lamp cap 1 and the lamp holder 2 by means of plugging, and the disassembly and assembly is further realized. Conveniently, the change of the rotational tightness between the buckle 4 and the shaft head 31 can be achieved by selecting the buckles 4 of different opening sizes. When the U-shaped opening of the buckle 4 is large, the buckle 4 and the shaft head The contact friction force of 31 is relatively small, and the rotation of the lamp cap 1 relative to the lamp holder 2 is relatively easy; when the U-shaped opening of the buckle 4 is small, the contact friction force of the buckle 4 and the shaft head 31 is correspondingly increased, and the lamp cap 1 is opposite to the lamp cap 1 The lamp holder 2 is more difficult to rotate, but the positioning of the lamp cap 1 can be better achieved.

The rotation of the lamp cap 1 of the present embodiment relative to the lamp holder 2 is realized by a cross-shaped rotating shaft 3. In order to increase the range of rotation of the lamp cap 1, a groove may be formed in the heat dissipating plate 14 at the bottom of the lamp cap 1. 142, the groove 142 is located between the two first slots 141, and the two ends of the rotating shaft 3 at the top of the groove 142 can enter the groove 142 just when rotating, thereby increasing the rotation axis 3 Rotate the range to expand the lighting space of the luminaire.

In order to facilitate the installation of the lamp into the mounting hole, the lamp holder 2 is also connected with a fixing cover 5 having a T-shaped cross section, including an annular end surface 51 and an axis integrally formed with the end surface 51. A plurality of insertion holes 521 are circumferentially distributed on the shaft surface 52 of the fixing cover 5, and an inner circumferential surface of the socket 2 is disposed at a position corresponding to the insertion hole 521 to be inserted into the insertion hole 521 The fixed elastic card portion 22 is connected to the outer peripheral surface of the socket 2; and two oppositely disposed slots 23 are formed in the axial direction. The slot 23 is provided with an elastic card 6 which is convex outward in the radial direction. When the lamp is mounted, the lamp holder 2 is engaged with the mounting hole. After the lamp holder 2 is inserted into the mounting hole, the elastic card 6 can be abutted against the inner wall of the mounting hole to ensure that the lamp holder 2 is reliably assembled in the mounting hole, and the fixing cover is fixed. The annular end surface 51 of the 5 can be abutted against the end surface of the mounting hole to realize the axial limitation of the lamp, and the material and color of the fixing cover can be selected according to actual needs to ensure the environment of the lamp and the surrounding area of the mounting hole.

Claims

Rights request

A lamp capable of rotating a lamp cap, comprising a lamp holder (2) and a lamp cap (1) rotatably received in the lamp holder (2), characterized in that: the lamp cap (1) and the lamp holder (2) connected by a rotating shaft (3), the rotating shaft (3) comprises four shaft heads (31) arranged in the same plane and distributed in a cross shape, each of the shaft heads (31) having along the same a circumferentially opened annular groove (311) of the shaft head (31), each annular groove (311) being provided with a buckle (4) rotatable relative to the shaft head (31), and located at the rotating shaft ( 3) The two oppositely disposed snaps (4) on the first straight line are fixedly connected to the bottom of the base (1), and the two opposite sides of the cross-shaped line of the rotating shaft (3) The buckle (4) is fixedly connected to the lamp holder (2) disposed opposite the bottom of the lamp cap (1).

2. The lamp capable of rotating a lamp cap according to claim 1, wherein: the buckle (4) is an elastic buckle having a U-shaped cross section, and the U-shaped opening of the buckle (4) is exactly the same size. The outer diameter of the annular groove (311) of the shaft head (31) is adapted; two oppositely disposed snaps (4) U-shaped openings on the first straight line of the cross-shaped shaft (3) face the lamp cap ( 1) At the bottom of the lamp cap (1), two first card slots (141) are provided which can be respectively fixed and corresponding to the corresponding buckles (4), and are located on the other line of the cross-shaped shaft (3). Two oppositely disposed snaps (4) U-shaped opening faces the lamp holder (2), and two inner and bottom surfaces of the lamp holder (2) are respectively provided with two corresponding snaps (4) A fixed second card slot (21).

The lamp capable of rotating the lamp cap according to claim 2, wherein: the two sides of the U-shaped side of the buckle (4) are respectively formed with two outwardly convex and spaced-restricted limiting ribs. (41).

4. The lamp capable of rotating a lamp cap according to claim 3, wherein: the lamp cap (1) comprises a lamp cover (11), a lens (12), a circuit board (13) and a heat dissipation plate (14), wherein The lens (12), the circuit board (13) and the heat dissipation plate (14) are housed in the lamp cover (11); the circuit board (13) is provided with an LED chip, and the lens (12) is fixed And disposed on a side of the circuit board (13) opposite to the LED chip, the heat dissipation plate (14) is fixedly disposed on the other side of the circuit board (13), the first card slot (141) is disposed on the heat dissipation plate (14), and the heat dissipation plate (14) is provided with a through hole (143) through which the power supply wire of the LED chip passes.

The lamp capable of rotating the lamp cap according to claim 4, wherein: the heat dissipation plate (14) further defines a groove (142) between the two first card slots (141), Both ends of the rotating shaft (3) at the top of the groove (142) are just able to enter the groove (142).

The lamp capable of rotating a lamp cap according to any one of claims 1 to 5, characterized in that: the lamp holder (2) is further connected with a fixing cover (5), the fixing cover (5) The cross section is T-shaped and includes an annular end surface (51) and a shaft surface (52) integrally formed perpendicularly to the end surface (51), wherein the axial surface (52) of the fixing cover (5) is circumferentially A plurality of jacks (521) are disposed, and an inner peripheral surface of the socket (2) is provided with a flexible portion that can be inserted and fixed with the jack (521) at a position corresponding to the jack (521). Card section (22).

The lamp capable of rotating the lamp cap according to claim 6, wherein: the outer peripheral surface of the lamp holder (2) is further provided with two oppositely disposed slots (23) opened in the axial direction, A resilient card (6) that is convex in the radial direction is disposed in the slot (23).