CN102518994A - Exhibition cabinet lamp with rotary lamp cap - Google Patents

Abstract

The invention discloses an exhibition cabinet lamp with a rotary lamp cap. The lamp comprises a lamp body and a lamp cap which is rotationally connected to the lamp body, and is characterized in that: the bottom of the lamp cap is provided with an elastic driving component; the elastic driving component comprises a spring seat, a positioning pin, a spring and a pressing plate; the positioning pin is accommodated in the spring seat; the spring seat is provided with an end hole through which the head of the positioning pin extends out; the spring is sleeved outside the positioning pin; one end of the spring is axially limited on the positioning pin; a hole cavity is formed on the pressing plate; the spring seat is fixedly arranged in the hole cavity; the other end of the spring is axially limited in the hole cavity; the pressing plate is fixedly connected with the lamp body; and the spring makes the head of the positioning pin always extend out of the spring seat through an end hole and press against the bottom of the lamp cap. By the lamp, elastic pre-tightening force can be generated at the bottom of the lamp cap, the rotating force of the lamp cap can be adjusted by replacing the spring, and the exhibition cabinet lamp has a simple structure and is convenient to mount. Moreover, the lamp cap can be always pressed against the lamp body under the action of the elastic driving component, and the radiating efficiency is improved.

Description

Showcase lamp with rotatable lamp head

technical field

The invention relates to a lamp, in particular to a showcase lamp with a rotatable lamp head.

Background technique

At present, the rotation structure of the lamp head of common lamps is mainly adopted as a limit column at the center of rotation of the lamp head, or by fixing the limit column with a ring to obtain the swing of the lamp head and the rotation of the axis. For example, the Chinese utility model "Adjustable Angle High-Power LED Spotlight" with the patent No. ZL201020633734.0 discloses a high-power LED spotlight with adjustable angle, including a lamp holder; an LED light source assembly and a lampshade; it is characterized in that : The LED spotlight also includes a rotating ring, which is connected and matched with the lampshade and can rotate relative to the lampshade. Two first hinge holes are arranged symmetrically with respect to the axis of the lampholder on the circumference of the lampholder. The axial connection line of the first hinge hole is set eccentrically with respect to the center of the cross section of the lamp holder, and the inner side of the rotating ring is respectively provided with a connecting part at the position corresponding to the first hinge hole. The second hinged hole is aligned, the first hinged hole and the second hinged hole are pierced with a rotating shaft. However, since the lamp cap and the lamp body of the lamp with this structure are separately arranged, the overall space requirement is large. Moreover, the lamp cap does not contact the lamp body during the turning process of the turning head lamp of this structure, so that the heat of the lamp cap cannot be transferred. To the lamp shell, it is not conducive to heat dissipation. For large lamps, it is often necessary to add a heat sink on the lamp holder, which increases the complexity and manufacturing cost of the lamp.

In the prior art, another commonly used rotation structure of the lamp head is: the lamp head is in spherical contact with the shell, and there is a plastic deformation pre-tightening force behind the lamp head, such as the Chinese utility model "An Angle" with the patent No. Adjustable LED spotlight" discloses a spotlight with such a structure, including a lamp holder, a lamp body, and a conductive piece connected to a power socket. The lamp body includes a housing and a luminous body arranged in the housing. , the conduction member and the luminous body are electrically connected by wires, and it is characterized in that: the lamp holder is provided with a cavity, and a ring capable of rotating with the housing is arranged in the cavity, wherein the inner surface of the ring is inverted Conical, the lower part of the housing rotates with the inner surface of the ring, the top of the lamp holder is also provided with an end cover, and the end cover is provided with a through hole for the end of the housing to protrude from, and the shaft of the housing The limit is located in the through hole of the end cap. In this patent, a silicone pad or a corrugated spring is arranged between the bottom surface of the ring and the concave cavity, and the rotating contact surface is relatively large, which is suitable for lamp holders with a spherical surface structure, and the pretightening force generated by this plastic deformation can be used for many times or for a long time. It is easy to fail after time is used, and it cannot guarantee the effective use of the lamp head for a long time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a showcase lamp with a rotatable lamp head, which has a compact structure, is easy to install, and can adjust the rotation force.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a showcase lamp with a rotatable lamp cap, which includes a lamp body and a lamp cap rotatably connected to the lamp body, and is characterized in that: the bottom of the lamp cap is also An elastic driving assembly capable of adjusting the rotation strength of the lamp head is provided, and the elastic driving assembly includes a spring seat, a positioning pin, a spring and a pressing plate, wherein the positioning pin is accommodated in the spring seat, and the spring seat There is an end hole for the head of the positioning pin to protrude; the spring is sleeved outside the positioning pin, and one end of the spring is axially limited on the positioning pin; a hole is opened on the pressure plate cavity, the spring seat is fixedly arranged in the cavity, the other end of the spring is axially limited in the cavity, the pressure plate is fixedly connected with the lamp body, and the spring has The tendency is to make the head of the positioning pin protrude from the end hole of the spring seat all the time and abut against the bottom of the lamp cap.

In order to realize the axial positioning of the spring and simplify the structure, preferably, the positioning pin is integrally formed with an outwardly protruding retaining ring along the circumferential direction, and one end of the spring abuts against the lower end surface of the retaining ring. By forming an outwardly protruding retaining ring structure on the positioning pin, one end of the spring can directly abut against the retaining ring, thereby realizing axial positioning of the spring.

In order to realize the axial limit of the positioning pin, as a preference, the upper end surface of the stop ring is a conical surface, and the inner end surface of the end hole of the spring seat is formed with an inner conical surface that can be adapted to the upper end surface of the stop ring . Therefore, when the positioning pin is driven outward by the elastic force, the conical surface of the positioning pin can cooperate with the inner conical surface of the spring seat to offset the axial limit, and the arc surface contact between the positioning pin and the spring seat can ensure The contact is more reliable, and it is convenient to open the mold.

In order to prevent the spring seat from protruding, ensure that the spring seat is fixedly arranged in the pressure plate, as a preference, the outer wall of the spring seat is formed with a protruding clamping portion, and the cavity of the pressure plate is formed at the opening end. The clamping parts are abutted against each other to realize the clamping feet of the axial limit of the spring seat. The cooperation of the clamping part and the clamping foot can facilitate the installation and disassembly of the spring seat. When installing, it is only necessary to insert the spring seat into the cavity of the pressure plate, and the operation is convenient.

In order to realize the positioning of the spring and prevent the deformation of the spring, as a preference, the cavity of the pressure plate is also formed with a column at the bottom, the column is in an inverted T shape, and the other end of the spring is sleeved on the column and connected to the column. The T-shaped step surfaces of the columns are offset. The other end of the spring is sleeved on the column, which can not only play a guiding role, but also realize axial limit.

Preferably, the lamp body is provided with a through hole for the lamp cap to pass through. The inner wall of the through hole forms a first spherical surface with a small upper end and a larger lower end. The first spherical surface of the through hole is matched with the second spherical surface axially limited in the through hole. Therefore, the spherical contact between the lamp cap and the lamp body realizes rotatable fit, and the spherical contact can ensure the rotation of the lamp cap within a range of 360 degrees, expanding the rotatable angle of the lamp cap; , and can realize the axial limit, and the positioning pin driven by the spring is against the bottom of the lamp cap, so that the second spherical surface of the lamp cap can always be in close contact with the first spherical surface formed by the inner wall of the through hole of the lamp body, ensuring long-term use Finally, the good contact between the lamp cap and the lamp body shell ensures the heat dissipation of the lamp cap.

In order to facilitate disassembly and assembly, as a further preference, mounting holes are opened at both ends of the pressure plate, and the lamp body includes an upper shell and a lower shell connected to each other, and the through hole is opened on the upper shell Blind holes are provided on the inner side of the upper housing at positions corresponding to the mounting holes, and the pressure plate and the upper housing are fixedly connected by screws that pass through the mounting holes and the corresponding blind holes. .

In order to achieve connection and combination with other lamp bodies, as a further preference, the two ends of the lamp body are respectively connected with connectors through which wires can pass through and externally connect to other lamp bodies.

Preferably, the bottom of the lamp cap is provided with a groove capable of abutting against the head of the positioning pin. Therefore, the head of the positioning pin can be accommodated in the groove, and the groove can play a guiding role to ensure that when the positioning pin presses the lamp cap, the position will not shift, ensuring the force uniformity of the rotation force of the lamp cap.

As a further preference, the bottom of the lamp cap is also provided with a lead hole through which the wire goes out. Therefore, the wires inside the lamp head can pass through the lead holes, which not only ensures that the wires are combed in an orderly manner, but also improves safety and convenience.

Compared with the prior art, the present invention has the advantages that: adopting the elastic driving assembly composed of spring seat, positioning pin, spring and pressing plate can generate an elastic pre-tightening force at the bottom of the lamp cap, and the elastic pre-tightening force is spring force, which is relatively Compared with the plastic deformation force in the prior art, it has better durability and prolongs the service life of the product; moreover, the adjustment of the rotation force of the lamp head can be realized by replacing the spring, the structure is simple, the installation is convenient, and it can be applied to different types of lamps In addition, under the action of the elastic drive assembly, the lamp cap can always be in close contact with the lamp body, so that the lamp cap can dissipate heat through the lamp body in a timely manner after long-term use, saving the trouble of installing a heat dissipation device on the lamp cap , improve heat dissipation efficiency, and reduce design and production costs.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a showcase light according to an embodiment of the present invention.

Fig. 2 is a three-dimensional exploded view of the showcase light according to the embodiment of the present invention.

Fig. 3 is an assembly cross-sectional view of the showcase light according to the embodiment of the present invention.

Fig. 4 is a partial exploded view of the lamp holder of the showcase lamp according to the embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 4, this embodiment is a display case lamp with LED lighting and a rotatable lamp head. The showcase lamp includes a lamp body 1 and a plurality of lamp holders 2 connected to the lamp body 1, wherein , the lamp body 1 is composed of an upper shell 11 and a lower shell 12 connected to each other. The lamp body 1 is provided with a plurality of through holes 111 on the upper shell 11 for the lamp holder 2 to pass through. The inner side of each through hole 111 The wall is formed with a first spherical surface 112. The cross-section of the first spherical surface 112 is an inverted bowl shape with a small upper end and a larger lower end. The second spherical surface 21 matched with the surface 112, the cross section of the second spherical surface 21 is also in the shape of an inverted bowl with a small upper end and a large lower end. After the lamp cap 2 passes through the through hole 111, the second spherical surface of the lamp cap 2 21 fits with the first spherical surface 112 of the through hole 111, and realizes the axial limit of the lamp cap 2 along the through hole 111. Since the lamp cap 22 and the lamp body 1 are in spherical contact, when the lamp cap 22 is swung, it can realize The lamp head 22 rotates within a range of 360 degrees relative to the lamp body 1;

In order to facilitate the interconnection and combination of multiple lamp bodies 1, the two ends of the lamp body 1 are also respectively connected with a connector 13 through which the wires can pass through and connect to other lamp bodies 1. In order to prevent the wires from being pulled or messed up, The bottom of the lamp cap 2 is also provided with a lead hole 22 for the wire to pass through. In addition, the internal structure of the lamp holder 2 of this embodiment is the prior art, specifically, it can be composed of a lens, an LED illuminant and a circuit board lamp, etc. The internal structure of the lamp body 1 is not the specific invention point of this embodiment, and the lamp body 1 is omitted again. A detailed description of the internal structure.

The lamp caps 2 of this embodiment are rotatably connected to the lamp body 1 through spherical contact, and an elastic drive assembly is provided at the bottom of each lamp cap 2, and the elastic drive assembly includes a spring seat 3, a positioning pin 4, a spring 5 and Pressing plate 6, wherein, positioning pin 4 is integrally formed with outwardly protruding retaining ring 41 along the circumferential direction, and the upper end surface of retaining ring 41 is conical surface, and positioning pin 4 is accommodated in spring seat 3, and spring seat 3 is provided with for positioning pin The end hole 31 protruding from the head 42 of 4, the inner end surface of the end hole 31 of the spring seat 3 is formed with an inner conical surface that can be adapted to the upper end surface of the retaining ring 41;

The spring 5 is sleeved outside the tail portion 43 of the positioning pin 4, and one end of the spring 5 abuts against the lower end surface of the retaining ring 41 and is axially limited on the positioning pin 4; part 32, the pressure plate 6 is provided with a cavity 61, and the cavity 61 of the pressure plate 6 is formed on the opening end with a clamp foot 62 that can resist the clamp portion 32 to realize the axial limit of the spring seat 3. The spring seat 3 together with the spring 5 and the positioning pin 4 are housed in the cavity 61, and the spring seat 3 and the pressure plate 6 are fixedly connected by the fastening of the clamp part 32 and the clamp foot 62. The cavity 61 of the pressure plate 6 is also formed with a Invert the T-shaped column 63, the other end of the spring 5 is sleeved on the column 63 and abuts against the T-shaped step surface 631 of the column 63, and the spring 5 has a function to make the head 42 of the positioning pin 4 protrude from the spring seat all the time. 3 end hole 31 and the bottom of the lamp cap 2, in order to prevent the positioning pin 4 from shifting when it extends out of the end hole 31, and to ensure the force balance of the lamp cap 2, the bottom of the lamp cap 2 is also equipped with a device that can be aligned with the positioning pin. The head 42 of 4 resists the groove 23 that cooperates;

Both ends of the pressure plate 6 also have side wings 64, and each side wing 64 is provided with a mounting hole 641, and the inner surface of the upper housing 11 is provided with blind holes 113 corresponding to the mounting holes 641 on both sides of the through hole 111. The pressing plate 6 and the upper casing 11 are fixedly connected by screws passing through the installation hole 641 and the corresponding blind hole 113 .

Therefore, the positioning pin 4 and the spring 5 are accommodated in the spring seat 3, the spring seat 3 is arranged in the pressure plate 6, and the pressure plate 6 is fixedly connected to the upper shell 11 of the lamp body 1 by screws, and the positioning pin 4 is acted by the spring force And it is pushed out of the end hole 31 of the spring seat 3, and the head 42 of the positioning pin 4 just abuts against the groove 23 at the bottom of the lamp cap 2, and the different rotations of the lamp cap 2 can be realized by adjusting the spring 5 Strength;

Thus, when the lamp cap 2 rotates, the pressure of the spring 5 ensures uniform frictional contact between the lamp cap 2 and the lamp body 1, and the spring preload generated at the bottom of the lamp cap 2 enables the second spherical surface 21 on the outer wall of the lamp cap 2 to It is completely attached to the first spherical surface 112 of the lamp body 1, that is, the lamp cap 2 and the lamp body 1 are always in a pressed state, and the product design can be made smaller. After the lamp cap 2 is used for long-term lighting, the The heat can be transferred to the lamp body 1 in time, so that the lamp holder 2 has better heat dissipation and prolongs the service life of the lamp.

Claims (10)

1. A showcase lamp with a rotatable lamp cap, comprising a lamp body (1) and a lamp cap (2) rotatably connected to the lamp body (1), characterized in that: the bottom of the lamp cap (2) It is also provided with an elastic driving assembly capable of adjusting the rotation strength of the lamp head (2), the elastic driving assembly includes a spring seat (3), a positioning pin (4), a spring (5) and a pressing plate (6), wherein the The positioning pin (4) described above is accommodated in the spring seat (3), and the spring seat (3) is provided with an end hole (31) for the head (42) of the positioning pin (4) to protrude; The spring (5) is sleeved outside the positioning pin (4), and one end of the spring (5) is axially limited on the positioning pin (4); the pressure plate (6) is provided with a hole Cavity (61), the spring seat (3) is fixedly arranged in the cavity (61), the other end of the spring (5) is axially limited in the cavity (61), the pressure plate ( 6) It is fixed and connected with the lamp body (1), and the spring (5) has an end hole (31) that makes the positioning pin (4) protrude from the spring seat (3) all the time And the trend of offsetting with the bottom of the lamp holder (2). 2. The showcase lamp with a rotatable lamp head according to claim 1, characterized in that: the positioning pin (4) is integrally formed with an outwardly protruding retaining ring (41) along the circumferential direction, and one end of the spring (5) It abuts against the lower end surface of the stop ring (41). 3. The showcase lamp with a rotatable lamp head according to claim 2, characterized in that: the upper end surface of the retaining ring (41) is conical, and the inner end surface of the end hole (31) of the spring seat (3) forms a There is an inner conical surface adapted to the upper end surface of the retaining ring (41). 4. The showcase lamp with a rotatable lamp head according to claim 1, characterized in that: said spring seat (3) is formed with a protruding locking part (32) on the outer wall, and said pressing plate (6) At the opening end of the cavity (61) is formed a locking foot (62) capable of abutting against the locking portion (32) to realize the axial limit of the spring seat (3). 5. The showcase lamp with a rotatable lamp head according to claim 1, characterized in that: the cavity (61) of the pressure plate (6) is formed with a column (63) at the bottom, and the column (63) is inverted T-shaped, the other end of the spring (5) is sleeved on the column (63) and abuts against the T-shaped step surface of the column (63). 6. The showcase lamp with a rotatable lamp cap according to any one of claims 1-5, characterized in that: the lamp body (1) is provided with a through hole for the lamp cap (2) to pass through ( 111), the inner side wall of the through hole (111) forms a first spherical surface (112) with a small upper end and a larger lower end, and the outer side wall bottom of the lamp holder (2) is formed with a The first spherical surface (112) cooperates with and axially restricts the second spherical surface (21) in the through hole (111). 7. The showcase lamp with a rotatable lamp head according to claim 6, characterized in that: two ends of the pressure plate (6) are provided with installation holes (641), and the lamp body (1) includes An integrated upper casing (11) and lower casing (12), the through hole (111) is opened on the upper casing (11), and the inner surface of the upper casing (11) corresponds to the installation A blind hole (113) is provided at the position of the hole (641), and the connection between the pressure plate (6) and the upper casing (11) is passed through the installation hole (641) and the corresponding blind hole (113). Screw secure connection. 8. The showcase lamp with a rotatable lamp head according to claim 6, characterized in that: the two ends of the lamp body (1) are respectively connected with connectors ( 13). 9. The showcase lamp with a rotatable lamp base according to any one of claims 1-5, characterized in that: the bottom of the lamp base (2) is provided with a head ( 42) Compensating groove (23). 10. The showcase lamp with a rotatable lamp head according to claim 9, characterized in that: the bottom of the lamp head (2) is also provided with a lead hole (22) for the wire to pass through.

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