A spotlight with good heat dissipation

Abstract

The application discloses a spotlight with good heat dissipation performance, which comprises a lamp holder, wherein the lamp holder comprises a lamp holder shell, characterized in that: the upper and lower ends of the lamp holder shell are open and the center of the lamp holder shell is a hollow cavity; the lamp holder further comprises: heat dissipation fins which are arranged on the inner side wall of the lamp holder shell and comprise multiple heat dissipation fins; a lamp plate which is arranged in the cavity of the lamp holder shell and divides the cavity of the lamp holder shell into an upper cavity and a lower cavity; the heat dissipation fins are arranged in the upper cavity; the lamp plate is provided with a shunt hole which communicates the upper cavity and the lower cavity; a light source assembly is fixed in the lower cavity; the light source assembly is provided with a ventilation hole which communicates with the shunt hole, and the ventilation hole and the shunt hole communicate with the outside through the openings at the upper and lower ends of the lamp holder shell, so that a heat dissipation channel which communicates with the outside is formed outside the heat dissipation fins. The application has the advantages of beautiful appearance and good heat dissipation performance.

Description

Technical Field

[0001] This invention relates to spotlights, and more specifically, to spotlights with good heat dissipation performance. Background Technology

[0002] Most existing spotlights with good heat dissipation performance adopt an external finned heat dissipation structure, allowing the heat dissipation fins to directly and fully contact the outside air, accelerating heat exchange and improving the spotlight's heat dissipation performance. However, the external finned heat dissipation structure compromises the aesthetic integrity of the lamp body. Therefore, for aesthetic reasons, many spotlights use internal heat dissipation fins. However, existing spotlights with internal heat dissipation fins generally suffer from poor heat dissipation performance because the heat dissipation fins cannot fully contact the outside cool air. Summary of the Invention

[0003] In order to solve the technical problem of poor heat dissipation performance of spotlights with built-in heat dissipation fins in the prior art, the present invention provides a spotlight with good heat dissipation performance.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is to design a spotlight with good heat dissipation performance, including a lamp head, wherein the lamp head includes a lamp head shell, the upper and lower ends of the lamp head shell are open and the center is a hollow cavity; the lamp head further includes:

[0005] Heat dissipation fins, including multiple fins, are all disposed on the inner sidewall of the lamp holder housing;

[0006] A lamp plate is disposed within the cavity of the lamp head housing and divides the cavity of the lamp head housing into an upper cavity and a lower cavity; the heat dissipation fins are disposed within the upper cavity; the lamp plate is provided with a diversion hole connecting the upper cavity and the lower cavity;

[0007] A light source assembly is fixed in the lower cavity; the light source assembly is provided with a vent hole that communicates with the diversion hole, and the vent hole and the diversion hole communicate with the outside through the openings at the upper and lower ends of the lamp head housing, thereby forming a heat dissipation channel communicating with the outside on the outside of the heat dissipation fins.

[0008] The light source assembly includes:

[0009] A light source, which is fixed to the lower surface of the lamp panel;

[0010] A lens that covers the light source;

[0011] A lens retaining ring is fixed to the lamp head housing and clamps and fixes the lens between the lens retaining ring and the lamp plate;

[0012] A gap is provided between the lens retaining ring and the lens, and the gap forms the vent hole.

[0013] The lens retaining ring includes:

[0014] The pressure ring body is threadedly connected to the lower opening of the lamp holder housing;

[0015] A pressure ring post, comprising multiple such posts, is connected to the upper end of the pressure ring body and protrudes from the upper end of the pressure ring body;

[0016] A retaining ring is provided at the upper end of the retaining ring post and extends upward along the outer side of the upper end of the retaining ring post; the upper end of the retaining ring post abuts against the lower end of the lens, and the retaining ring abuts against the side of the lens; the gap is formed between each retaining ring post.

[0017] The heat dissipation fins are vertically arranged on the inner side wall of the lamp head housing, and the heat dissipation fins, the lamp plate, and the lamp head housing are integrally formed.

[0018] The diversion holes include multiple holes, and each diversion hole is respectively disposed between two adjacent heat dissipation fins.

[0019] The lamp holder also includes:

[0020] A central column is located at the center of the lamp panel and within the upper cavity, and the center of the central column has a hollow circuit accommodating cavity.

[0021] The lamp head also includes a connecting rod groove on the outer surface of the lamp head housing, and a central post hole is provided on the side of the central post. The spotlight with good heat dissipation performance also includes:

[0022] A connecting rod seat, which is inserted into the connecting rod groove and fixed to the lamp holder housing;

[0023] A connecting rod shaft, which is laterally mounted on the connecting rod seat;

[0024] A connecting rod, the lower end of which is sleeved on the connecting rod shaft and can rotate relative to the connecting rod shaft; the center of the connecting rod is provided with a connecting rod wire hole, which communicates with the central column hole and the circuit accommodating cavity.

[0025] The spotlight with good heat dissipation performance also includes a lamp holder connected to the connecting rod. The lamp holder includes a lamp holder housing and a connector connected to the lower end of the lamp holder housing and rotatable relative to the lamp holder housing. A recessed eccentric annular groove is provided on the inner side wall of the lamp holder housing. The connector includes:

[0026] The locking component has an outwardly protruding eccentric ring platform on its side wall that matches the eccentric ring groove. The eccentric ring platform is screwed into the eccentric ring groove to fix the locking component to the lamp holder housing. The inner side wall of the lamp holder housing is also provided with a clamping step located above the eccentric ring groove. The locking component has a locking hole in its center.

[0027] The rotating component has its upper end clamped between the locking component and the clamping step, and its lower end inserted into the hole of the locking component; the rotating component can rotate relative to the lamp holder housing and the locking component.

[0028] The inner wall of the lamp holder housing is also provided with an annular groove, and the side wall of the rotating component is provided with a protruding elastic pin. The elastic pin is engaged in the groove and can rotate relative to the groove.

[0029] The lamp holder also includes:

[0030] A stylus fixing plate is disposed inside the lamp holder housing;

[0031] The conductive contact pin includes at least two pins, which are fixed to the contact pin fixing plate. Each conductive contact pin is at a different distance from the rotation axis of the connector.

[0032] A conductive needle disk is disposed below the contact pin fixing plate and fixedly connected to the connector. The conductive needle disk is provided with at least two spaced-apart annular conductive rings. Each conductive ring is centered on the rotation axis of the connector, and each conductive ring corresponds to a conductive contact pin. Each conductive contact pin is in electrical contact with its corresponding conductive ring. During the rotation of the connector relative to the lamp holder housing, the conductive needle disk rotates with the connector relative to the conductive contact pins, and each conductive contact pin is in continuous electrical contact with its corresponding conductive ring. The conductive needle disk is fixed to the rotating component.

[0033] This invention relates to a lamp holder comprising a lamp holder housing, heat dissipation fins, a lamp plate, and a light source assembly. The lamp holder housing has openings at both ends and a hollow cavity in the center. Multiple heat dissipation fins are disposed on the inner wall of the lamp holder housing. The lamp plate is disposed within the cavity of the lamp holder housing and divides the cavity into an upper cavity and a lower cavity. The heat dissipation fins are disposed within the upper cavity. The lamp plate has a diversion hole connecting the upper and lower cavities. The light source assembly is fixed within the lower cavity. The light source assembly has a vent hole communicating with the diversion hole. The vent hole and the diversion hole communicate with the outside through the openings at both ends of the lamp holder housing, thereby forming a heat dissipation channel communicating with the outside on the outer side of the heat dissipation fins. Because of the built-in heat dissipation fins design, and the heat dissipation channels that are open to the outside on both the top and bottom of the heat dissipation fins, the heat dissipation channels guide the airflow to form convection through each heat dissipation fin, and quickly conduct away the heat on the surface of the heat dissipation fins. This achieves high-efficiency heat exchange capacity without compromising the overall appearance, resulting in good heat dissipation performance. Attached Figure Description

[0034] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:

[0035] Figure 1 This is a structural diagram of the spotlight of the present invention;

[0036] Figure 2 This is a structural diagram of the spotlight of the present invention from another perspective;

[0037] Figure 3 This is an exploded view of the spotlight of the present invention;

[0038] Figure 4 This is a cross-sectional view of the spotlight of the present invention;

[0039] Figure 5 This is a connection diagram of the lens and lens retaining ring of the spotlight of the present invention;

[0040] Figure 6 This is a structural diagram of the lamp head housing of the spotlight of the present invention;

[0041] Figure 7 This is a structural diagram of the lamp head housing of the spotlight of the present invention from another perspective;

[0042] Figure 8 This is a structural diagram of the lens retaining ring of the spotlight of the present invention;

[0043] Figure 9 This is a structural diagram of the lamp holder housing of the spotlight of the present invention.

[0044] Figure 10 This is a structural diagram of the locking component of the spotlight of the present invention;

[0045] Figure 11 This is a structural diagram of the rotating component of the spotlight of the present invention;

[0046] Figure 12 This is a structural diagram of the rotating component of the spotlight of the present invention from another perspective. Detailed Implementation

[0047] The specific embodiments of the present invention are further described below with reference to the accompanying drawings:

[0048] Please see also Figures 1 to 12The spotlight of the present invention includes a lamp holder 1, a connecting rod 2, and a lamp head 3, wherein the lamp holder 1 and the lamp head 3 are connected by the connecting rod 2. The lamp holder 1 includes a lamp holder housing 11 and a connector 12 connected to the lower end of the lamp holder housing and rotatable relative to the lamp holder housing. The inner sidewall of the lamp holder housing 11 is provided with a recessed eccentric annular groove 111 and a clamping step 112. The clamping step 112 is located at the upper part of the eccentric annular groove 111. The connector 12 includes a locking member 121 and a rotating member 122. The sidewall of the locking member 121 is provided with an outwardly protruding eccentric annular platform 1211 that matches the eccentric annular groove. The eccentric annular platform 1211 is screwed into the eccentric annular groove to fix the locking member 121 to the lamp holder housing. A locking member hole 1212 is provided in the center of the locking member. The upper end of the rotating member 122 is clamped between the locking member and the clamping step, and the lower end is inserted into the hole of the locking member; the rotating member can rotate relative to the lamp holder housing and the locking member.

[0049] By configuring a lamp holder housing and a connector, a recessed eccentric annular groove is provided on the inner side wall of the lamp holder housing; the connector includes a locking member, the side wall of which is provided with an outwardly protruding eccentric annular platform that matches the eccentric annular groove. The eccentric annular platform is screwed into the eccentric annular groove to fix the locking member to the lamp holder housing. Because an eccentric locking structure is used to connect the lamp holder housing and the connector, quick assembly and disassembly are possible, the structure is simple, and the connection is firm and stable.

[0050] The inner wall of the lamp holder housing is provided with an annular groove 113, and the side wall of the rotating component is provided with a protruding elastic pin 1221. The elastic pin 1221 is engaged in the groove 113 and can rotate relative to the groove. This further secures the lamp holder housing.

[0051] To facilitate the placement of the elastic pins, a plurality of pin holes 1225 are provided on the side wall of the rotating component. The number of elastic pins is the same as the number of pin holes 1225, and the elastic pins are respectively placed in the pin holes.

[0052] The outer wall of the portion of the rotating component that inserts into the locking hole is provided with a vertical guide groove 1222 and an annular locking groove 1223 located above and communicating with the guide groove. A guide pin 1213 is provided on the side wall of the locking component. The locking component is aligned and inserted into the guide groove via the guide pin 1213, and then moved upwards to allow the guide pin to enter the locking groove 1223. Rotating the locking component allows the rotating component and the locking component to rotate relative to each other.

[0053] The angle of the lamp head 2 can be adjusted by setting a rotating component that can be rotatably connected to the locking component.

[0054] To facilitate the installation of the locking component, the bottom surface of the locking component is provided with a downward-protruding hand lever protrusion 1214.

[0055] The lower part of the rotating component extends out of the locking hole. The quick-connect lamp holder also includes a connecting rod 2 threadedly connected to the portion of the lower part of the rotating component that extends out of the locking hole, and an elastic washer 4 disposed between the connecting rod 2 and the rotating component. The rotating component has a wire outlet hole 1224 at its center, and the connecting rod 2 has a connecting rod wire hole 21 communicating with the wire outlet hole 1224 at its center.

[0056] The lamp holder further includes a pin fixing plate 14, conductive pins 15, and a conductive pin disk 16. The pin fixing plate 14 is disposed inside the lamp holder housing. At least two conductive pins 15 are included, and each conductive pin 15 is fixed to the pin fixing plate. The distance between each conductive pin and the rotation axis of the connector is different. The conductive pin disk 16 is disposed below the pin fixing plate and fixedly connected to the connector. At least two spaced annular conductive rings 161 are provided on the conductive pin disk 16. Each conductive ring is centered on the rotation axis of the connector, and each conductive ring 161 corresponds to a conductive pin. Each conductive pin is in electrical contact with its corresponding conductive ring. During the rotation of the connector relative to the lamp holder housing, the conductive pin disk rotates with the connector relative to the conductive pins, and each conductive pin remains in electrical contact with its corresponding conductive ring. The conductive pin disk is fixed to the rotating component.

[0057] In this specific embodiment, the conductive contact pin is a spring pin. Therefore, during the rotation of the connector, the conductive contact pin will not scratch the conductive pin disc, and it also exhibits good conductivity.

[0058] The upper end of the conductive contact pin passes through the contact pin fixing plate to form a wiring portion 141. A cover plate 114 is provided inside the lamp holder housing, located above the contact pin fixing plate. The cover plate is provided with an inlet hole 1141 that communicates with the outside. The inlet wire passes through the inlet hole 1141 and is electrically connected to the wiring portion 141.

[0059] By configuring a lamp holder housing, a connector, a contact pin fixing plate, conductive contacts, and a conductive pin disk, and setting an annular conductive ring on the conductive pin disk, each conductive ring is positioned with the rotation axis of the connector as its center, and each conductive ring corresponds one-to-one with a conductive contact pin. Each conductive contact pin is in electrical contact with its corresponding conductive ring. As the connector rotates relative to the lamp holder housing, the conductive pin disk rotates with the connector relative to the conductive contacts, and each conductive contact pin remains in electrical contact with its corresponding conductive ring. Thus, electricity can be conducted through the conductive contacts to the conductive rings on the conductive pin disk, and then the conductive rings are connected to the lamp holder via wires. Because the wires rotate with the conductive pin disk during rotation, there is no twisting or entanglement. Therefore, there is no need for an angle adjustment limit structure, allowing continuous 360-degree rotation. This design is not only simple in structure but also offers excellent convenience and reliability.

[0060] To facilitate the installation of the spotlight, the lamp holder also includes a fixing clip 13 located at the upper end of the lamp holder housing.

[0061] The lamp holder 3 includes a lamp holder housing 31, heat dissipation fins 32, a lamp plate 33, and a light source assembly 34. The lamp holder housing 31 has openings at both the top and bottom and is a hollow cavity in the center. Multiple heat dissipation fins 32 are disposed on the inner wall of the lamp holder housing. The lamp plate 33 is disposed within the cavity of the lamp holder housing and divides the cavity into an upper cavity 311 and a lower cavity 312. The heat dissipation fins are disposed within the upper cavity 311. The lamp plate has a diversion hole 331 connecting the upper and lower cavities. The light source assembly 34 is fixed within the lower cavity; the light source assembly has a vent 344 communicating with the diversion hole. The vent 344 and the diversion hole 331 communicate with the outside through the openings at the top and bottom of the lamp holder housing, thereby forming a heat dissipation channel communicating with the outside on the outer side of the heat dissipation fins.

[0062] Because of the built-in heat dissipation fins design, and the heat dissipation channels that are open to the outside on both the top and bottom of the heat dissipation fins, the heat dissipation performance is good. The heat dissipation channels guide the airflow to form convection through each heat dissipation fin, which can quickly conduct away the heat on the surface of the heat dissipation fins.

[0063] The light source assembly includes a light source (not shown in the figure), a lens 342, and a lens retaining ring 343. The light source (not shown in the figure) is fixed to the lower surface of the lamp panel. The lens 342 covers the light source. The lens retaining ring 343 is fixed to the lamp head housing and clamps and fixes the lens between the lens retaining ring and the lamp panel; a gap is provided between the lens retaining ring and the lens, and the gap forms the vent hole.

[0064] In this specific embodiment, the lens 342 includes a lens bracket 3421 and a lens body 3422. The lens bracket 341 is fixedly connected to the lamp panel, and the lens body 3422 is placed on the lens bracket.

[0065] The lens retaining ring 343 includes a retaining ring body 3431, retaining ring posts 3432, and retaining ring guards 3433. The retaining ring body 3431 is threadedly connected to the lower opening of the lamp holder housing; multiple retaining ring posts 3432 are included, each post being connected to and protruding from the upper end of the retaining ring body. The retaining ring guards 3433 are located at the upper end of the retaining ring posts and extend upward along the outer side of the upper end of the posts. The upper end of the retaining ring posts abuts against the lower end of the lens, and the retaining ring guards abut against the side of the lens. The gap is formed between the retaining ring posts.

[0066] In this specific embodiment, the heat dissipation fins are vertically arranged on the inner sidewall of the lamp head housing, and the heat dissipation fins, the lamp plate, and the lamp head housing are integrally formed.

[0067] The diversion holes include multiple holes, and each diversion hole is respectively disposed between two adjacent heat dissipation fins, thereby facilitating heat dissipation.

[0068] The lamp head also includes a central column 35, which is located at the center of the lamp plate and in the upper cavity. The central column has a hollow circuit accommodating cavity 351 for placing the circuit board.

[0069] The lamp holder also includes a connecting rod groove 36 on the outer surface of the lamp holder housing, and a central post hole 352 is provided on the side of the central post. The spotlight also includes a connecting rod seat 5 and a connecting rod shaft 6. The connecting rod seat 5 is inserted into the connecting rod groove 36 and fixed to the lamp holder housing. The connecting rod shaft 6 is horizontally disposed on the connecting rod seat. The lower end of the connecting rod is sleeved on the connecting rod shaft and can rotate relative to the connecting rod shaft. The connecting rod wire hole communicates with the central post hole 352 and the circuit receiving cavity 351, thereby connecting the power supply from the lamp holder to the lamp holder.

[0070] This invention relates to a lamp holder comprising a lamp holder housing, heat dissipation fins, a lamp plate, and a light source assembly. The lamp holder housing has openings at both ends and a hollow cavity in the center. Multiple heat dissipation fins are disposed on the inner wall of the lamp holder housing. The lamp plate is disposed within the cavity of the lamp holder housing and divides the cavity into an upper cavity and a lower cavity. The heat dissipation fins are disposed within the upper cavity. The lamp plate has a diversion hole connecting the upper and lower cavities. The light source assembly is fixed within the lower cavity. The light source assembly has a vent hole communicating with the diversion hole. The vent hole and the diversion hole communicate with the outside through the openings at both ends of the lamp holder housing, thereby forming a heat dissipation channel communicating with the outside on the outer side of the heat dissipation fins. Because of the built-in heat dissipation fins design, and the heat dissipation channels that are open to the outside on both the top and bottom of the heat dissipation fins, the heat dissipation channels guide the airflow to form convection through each heat dissipation fin, and quickly conduct away the heat on the surface of the heat dissipation fins. This achieves high-efficiency heat exchange capacity without compromising the overall appearance, resulting in good heat dissipation performance.

[0071] The present invention has the following advantages:

[0072] 1. An eccentric locking structure is used to connect the lamp holder housing and the connector, which allows for quick assembly and disassembly. The structure is simple and the connection is firm and stable.

[0073] 2. Good heat dissipation performance;

[0074] 3. No angle adjustment limit structure is required, and it can rotate continuously 360 degrees. It is not only simple in structure, but also very convenient and reliable.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A downlight with good heat dissipation performance, comprising a lamp holder, the lamp holder comprising a lamp holder shell, characterized in that: The lamp head shell has an upper opening, a lower opening and a hollow cavity in the center; the lamp head further comprises: a plurality of heat dissipation fins arranged on the inner side wall of the lamp head shell; a lamp plate arranged in the cavity of the lamp head shell and separating the cavity into an upper cavity and a lower cavity; the heat dissipation fins are arranged in the upper cavity; the lamp plate is provided with a shunt hole communicating the upper cavity and the lower cavity; a light source assembly fixed in the lower cavity; the light source assembly is provided with a ventilation hole communicating with the shunt hole; the ventilation hole and the shunt hole communicate with the outside through the upper and lower openings of the lamp head shell, thereby forming a heat dissipation channel communicating with the outside on the outside of the heat dissipation fins; the light source assembly comprises: a light source fixed on the lower surface of the lamp plate; a lens covering the light source; a lens pressing ring fixed on the lamp head shell and clamping and fixing the lens between the lens pressing ring and the lamp plate; a gap is arranged between the lens pressing ring and the lens, and the gap constitutes the ventilation hole; the lens pressing ring comprises: a pressing ring body threadedly connected to the lower opening of the lamp head shell; a plurality of pressing ring columns connected to the upper end of the pressing ring body and protruding from the upper end of the pressing ring body; a pressing ring guard arranged on the upper end of the pressing ring column and extending upward along the outside of the upper end of the pressing ring column; the upper end of the pressing ring column abuts against the lower end of the lens, and the pressing ring guard abuts against the side surface of the lens; the gap is formed between each pressing ring column; the heat dissipation fins are vertically arranged on the inner side wall of the lamp head shell, and the heat dissipation fins, the lamp plate and the lamp head shell are integrally formed; the lamp head further comprises: a center column arranged in the center of the lamp plate and located in the upper cavity; the center column is provided with a hollow circuit accommodating cavity in the center; the lamp head further comprises a connecting rod slot arranged on the outer side surface of the lamp head shell; the side surface of the center column is provided with a center column hole; the heat dissipation performance good spotlight further comprises: a connecting rod seat inserted into the connecting rod slot and fixed on the lamp head shell; a connecting rod shaft transversely arranged on the connecting rod seat; a connecting rod having a lower end sleeved on the connecting rod shaft and being rotatable relative to the connecting rod shaft; the connecting rod is provided with a connecting rod wire hole in the center; the connecting rod wire hole communicates with the center column hole and the circuit accommodating cavity; the heat dissipation performance good spotlight further comprises a lamp holder connected with the connecting rod; the lamp holder comprises a lamp holder shell and a joint connected with the lower end of the lamp holder shell and rotatable relative to the lamp holder shell; the inner side wall of the lamp holder shell is provided with a recessed eccentric ring slot; the joint comprises: a locking member; the side wall of the locking member is provided with an eccentric ring table protruding outward and matched with the eccentric ring slot; the eccentric ring table is screwed into the eccentric ring slot to fixedly connect the locking member with the lamp holder shell; the inner side wall of the lamp holder shell is further provided with a clamping step located at the upper part of the eccentric ring slot; the center of the locking member is provided with a locking member hole; a rotating member; the upper end of the rotating member is clamped between the locking member and the clamping step, and the lower end of the rotating member is inserted into the locking member hole; the rotating member is rotatable relative to the lamp holder shell and the locking member.

2. The spotlight according to claim 1, wherein: The flow holes include a plurality of flow holes, and each flow hole is arranged between two adjacent heat dissipation fins.

3. The spotlight according to claim 2, wherein: An annular clamping groove is further arranged on the inner side wall of the lamp holder shell, and a protruding elastic clamping pin is arranged on the side wall of the rotating member, which is clamped in the clamping groove and can rotate relative to the clamping groove.

4. The spotlight according to claim 3, wherein: The lamp holder further includes: a contact pin fixing plate arranged in the lamp holder shell; at least two conductive contact pins, which are fixed on the contact pin fixing plate and have different distances from the rotating axis of the connector; a conductive needle disc arranged below the contact pin fixing plate and fixedly connected with the connector, the conductive needle disc being provided with at least two annular conductive rings arranged at intervals, each conductive ring having the rotating axis of the connector as a center, each conductive ring being arranged in one-to-one correspondence with the conductive contact pins, each conductive contact pin being in electrical contact with the corresponding conductive ring, the conductive needle disc rotating together with the connector relative to the conductive contact pins during the rotation of the connector relative to the lamp holder shell, and each conductive contact pin being in electrical contact with the corresponding conductive ring at all times, and the conductive needle disc being fixed on the rotating member.

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