Patent ID: 12259117

DETAILED DESCRIPTION

In order to make the objective, technical solution and advantages of the present disclosure more apparent, the present disclosure will be described in details in connection with accompanying drawings and examples.

Here, it should be noted that in order to avoid obscuring the present disclosure with unnecessary details, only the structures and/or processing steps closely related to the solution of the present disclosure are shown in the accompanying drawings, while other details that are not much related to the present disclosure have been omitted.

In addition, it should be noted that the terms “comprising”, “including” or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or equipment.

Reference numerals used in this disclosure may include: lamp100; lamp body10; perforation11; first shell12; top plate121; annular side plate122; second shell13; accommodating cavity14; mating part15; lead hole16; connecting part17; heat dissipation structure20; blind hole21; connecting part22; protrusion23; first connecting plate24; second connecting plate25; cavity26; positioning part27; opening28; light source assembly30; through hole31; connecting hole32; light source plate33; lamp bead34; notch35; light-transmitting cover40; fasteners50.

With the increase of a size of the plastic part, an injection molding process thereof will cause a deformation, thus increasing the heat conduction path. Especially, due to the pursuit of cost saving, the plastic part usually is made of a modified PP material and would be seriously deformed after molding, which results in poor heat dissipation rate of the whole lamp. In view of this, it is necessary to improve the lamps to solve the such problems.

As shown inFIG.1,FIG.2andFIG.6, the present disclosure discloses a lamp100, which includes a lamp body10, a heat dissipation structure20, a light source assembly30, a light-transmitting cover40and a fastener50for connecting the lamp body10and the heat dissipation structure20. The light source assembly30, the heat dissipation structure20and the lamp body10are assembled in sequence, and the light-transmitting cover40is assembled finally. The lamp body10is provided with at least one perforation11; one side of the heat dissipation structure20facing towards the lamp body10is provided with a blind hole21corresponding to the perforation11; and the fastener50passes through the perforation11to be connected with the blind hole21, so as to fixedly connect the lamp body10and the heat dissipation structure20and to reduce a gap between the heat dissipation structure20and the lamp body10. With this arrangement, it not only ensures a safe creepage distance of the lamp100and maintain a physical isolation in existing lamps of the same type as the lamp100, but also stretches the heat dissipation structure20for flattening to avoid a deformation of the heat dissipation structure20, so as to reduce a connection gap between the heat dissipation structure20and each of the lamp body10and the light source assembly30, thereby reducing a heat dissipation path from the light source assembly30to the lamp body10in the lamp100.

Referring toFIG.2in combination withFIG.3, the lamp body10includes a first shell12and a second shell13surrounding an outer side of the first shell12; a perforation11is formed at the top of the first shell12and penetrates through the first shell12. An accommodating cavity14is formed inside the first shell12, and the heat dissipation structure20is accommodated in the accommodating cavity14and attached to the top of the first shell12. Specifically, the first shell12includes a top plate121and an annular side plate122connected with a peripheral edge of the top plate121; one end of the annular side plate122away from the top plate121extends in a circumferential direction and is connected with the second shell13. With such arrangement, the lamp body10can be formed as a double-shell structure, so that the second shell13can be used to shield a connection structure between the lamp body10and the heat dissipation structure20, which enables the whole lamp100to be more artistic. In this example, the lamp100is a downlight, and both the first shell12and the second shell13are in a cylindrical shape, but the present disclosure is not limited thereto.

In this example, the perforation11is formed in the top plate121, and the fastener50directly passes through the top plate121until it is connected with the blind hole21, so that the lamp body10and the heat dissipation structure20can be fixedly connected. In addition, the light-transmitting cover40is further accommodated in the accommodating cavity14. Specifically, a connecting part17for fixing the light-transmitting cover40is arranged at the bottom of the first shell12, close to a joint between the first shell12and the second shell13. The connecting part17is arranged in an annular shape and is arranged on an inner side wall of the first shell12to be snap-fitted with the light-transmitting cover40, so that the light-transmitting cover40is fixedly accommodated in the accommodating cavity14, which can not only ensure a full diffusion of light, but also protect the light-transmitting cover40from being damaged. The specific type of the light-transmitting cover40, as well as the specific assembling mode between the light-transmitting cover40and the lamp body10are not limited in the present disclosure, and the existing assembling solution can be adopted or adjusted adaptively according to actual situations.

Referring toFIGS.2,3and4, the heat dissipation structure20includes a first connecting plate24and a second connecting plate25surrounding the first connecting plate24. The first connecting plate24is in a circular shape, and the second connecting plate25is in an annular shape, so as to form a cavity26for accommodating the light source assembly30between the first connecting plate24and the second connecting plate25. The first connecting plate24of the heat dissipation structure20is attached to the top plate121of the first shell12; and the second connecting plate25is attached to the annular side plate122. Specifically, the blind hole21is arranged on the first connecting plate24; preferably, the first connecting plate24is provided with a protrusion23protruding towards the light source assembly30; and the blind hole21is arranged in the protrusion23. Of course, in the case that the first connecting plate24is thick enough, the blind hole can be directly formed in the first connecting plate24and the protrusion may be not provided, which is not limited in the present disclosure.

In this example, the fastener50is preferably a screw, the perforation11is preferably a screw hole, and an inner wall surface of the blind hole21is also provided with a screw thread correspondingly; in this way, the screw can pass through the screw hole and be locked and fixed in the blind hole21, so that the heat dissipation structure20can be stretched for flattening and the first connecting plate24of the heat dissipation structure20can be closely attached onto the top plate121of the lamp body10, thereby reducing the gap between the heat dissipation structure20and the lamp body10, and hence shortening the heat conduction path between the heat dissipation structure20and the lamp body10.

The light source assembly30is provided with a through hole31corresponding to the protrusion23, and the protrusion23is inserted into the through hole31. Specifically, the light source assembly30includes a light source plate33and a lamp bead34fixed on the light source plate33. The through hole31is arranged on the light source plate33, and the protrusion23is inserted into the through hole31, which not only can limit the connection between the light source assembly30and the heat dissipation structure20, but also can make the whole lamp100thinner and lighter.

The heat dissipation structure20is further provided with a connecting part22protruding towards the light source assembly30, and the connecting part22is in direct contact with the light source assembly30, so as to further reduce the connection gap between the light source assembly30and the heat dissipation structure20, that is, the heat dissipation path. Specifically, the connecting part22is arranged on the first connecting plate24, and the light source plate33is provided with a connecting hole32corresponding to the connecting part22, and the connecting part22is tightly fitted with the connecting hole32. Preferably, the connecting part22passes through the connecting hole32to be connected with the light source assembly30by hot melting. On the one hand, the light source assembly30can be in direct contact with the heat dissipation structure20, and on the other hand, the light source assembly30and the heat dissipation structure20can be restricted from moving randomly, so that the connection between the light source assembly30and the heat dissipation structure20has better stability. Preferably, the connecting part22is a limiting post, and the limiting post22is connected with the light source assembly30by hot melting. Of course, the connection between the connecting part22and the light source assembly30is not limited to be connected by hot melting, but can also be connected by ultrasonic welding, gluing, etc., as long as the connecting part22and the light source assembly30can be connected with each other, which is not particularly limited here.

An outer side wall of the second connecting plate25is provided with a positioning part27, and an inner side wall of the first shell12is correspondingly provided with a mating part15. The positioning part27and the mating part15are fitted with each other so that the heat dissipation structure20is accommodated and fixed in the accommodating cavity14. Preferably, the positioning portion27is a hook provided on the second connecting plate25, and the mating part15is a protrusion rib provided on the inner side wall of the first shell12. In the present disclosure, the heat dissipation structure20and the lamp body10are preferably in a circular shape. In this case, the mating part15is an annular protrusion rib arranged on the inner side wall of the first shell12, and a plurality of hooks are arranged and evenly distributed on the outer side wall of the second connecting plate25. Of course, the positioning part27and the mating part15can also have other structures, as long as the heat dissipation structure20can be accommodated and fixed in the accommodating cavity14, which is not particularly limited here. With the arrangement of the positioning part27and the mating part15, the lamp body10and the heat dissipation structure20can be fixed in advance, so that they can be fixedly connected again by using the fasteners50later.

With combined reference toFIG.2,FIG.3,FIG.4andFIG.5, the lamp body10is further provided with a lead hole16for wiring connection, and the heat dissipation structure20is further provided with a columnar-shaped opening28corresponding to the lead hole16. In order to safely connect the wirings with the light source assembly30, a notch35is provided at the edge of the light source plate33. The wirings sequentially pass through the lead hole16and the opening28, and are pressed into the notch35, so as to be electrically connected with the light source assembly30.

In order to clearly explain the structural principle of the lamp100, the assembling process of the lamp100will be described in details below. In the present disclosure, the lamp body10is preferably a metal lamp body10having thermal conductivity property, and the heat dissipation structure20is preferably an insulating plastic part. Firstly, the light source assembly30is placed into the cavity26of the heat dissipation structure20; and the protrusion23and the connecting part22on the heat dissipation structure20are inserted into the through hole31and the connecting hole32on the light source plate33, respectively; and then the connecting part22is fixedly connected with the light source plate33by hot melting. Then, the heat dissipation structure20assembled with the light source assembly30is placed in the accommodating cavity14of the lamp body10, and the positioning part27on the heat dissipation structure20is fixedly connected with the mating part15on the lamp body10, so that the heat dissipation structure20and the lamp body10are snap-fitted with each other and positioned. Then, the fastener50is inserted through the perforation11in the lamp body10until it is connected with the blind hole21, so that the fastener50is fixedly locked to lock and fix the heat dissipation structure20and the lamp body10. Finally, the light-transmitting cover40and the lamp body10are assembled and fixed, and the assembling process of the lamp100is completed.

After the light energy generated by the lamp bead34on the light source assembly30is converted into heat, the heat dissipation path of the whole lamp100is as follows: the heat is transmitted from the lamp bead34to the light source plate33, then from the light source plate33to the heat dissipation structure20, then from the heat dissipation structure20to the lamp body10, and finally the lamp body10transmits the heat out of the lamp100. By reducing the gap between the heat dissipation structure20and the lamp body10and the gap between the heat dissipation structure20and the light source plate33, the heat dissipation efficiency of the whole lamp100is improved.

To sum up, in the lamp100of the present disclose, the lamp body10is provided with a perforation11while the heat dissipation structure20is provided with a blind hole21corresponding to the perforation11, so that the fastener50can pass through the perforation11to be connected with the blind hole21; in this way, the heat dissipation structure20can be stretched for flattening, so as to shorten the heat dissipation path between the heat dissipation structure20and each of the lamp body10and the light source assembly30, thereby improving the heat dissipation rate of the whole lamp, and prolonging the service life of the lamp100.

The objective of the present disclosure is to provide a lamp so as to improve the heat dissipation rate of the whole lamp.

In order to achieve the above objective, the present disclosure provides a lamp including a lamp body and a light source assembly arranged in the lamp body, wherein the lamp further includes a heat dissipation structure and a fastener which are located between the lamp body and the light source assembly; the lamp body is provided with at least one perforation, and one side of the heat dissipation structure facing towards the lamp body is provided with a blind hole corresponding to the perforation; the fastener is configured to pass through the perforation to be connected with the blind hole so as to reduce a gap between the heat dissipation structure and the lamp body; one side of the heat dissipation structure facing towards the light source assembly is provided with a connecting part, and the connecting part is connected with the light source assembly to reduce a gap between the light source assembly and the heat dissipation structure.

As a further improvement of the present disclosure, the heat dissipation structure is provided with a protrusion protruding towards the light source assembly, the blind hole is arranged in the protrusion, and the light source assembly is provided with a through hole corresponding to the protrusion, wherein the protrusion is inserted into the through hole to limit a connection between the light source assembly and the heat dissipation structure.

As a further improvement of the present disclosure, the light source assembly is further provided with a connecting hole corresponding to the connecting part, and the connecting part is tightly fitted with the connecting hole.

As a further improvement of the present disclosure, the light source assembly is further provided with a connecting hole corresponding to the connecting part, and the connecting part passes through the connecting hole to be connected with the light source assembly by means of hot melting.

As a further improvement of the present disclosure, the lamp body includes a first shell and a second shell surrounding the first shell; the perforation is formed at a top of the first shell and penetrates through the first shell; an accommodating chamber is formed inside the first shell, and the heat dissipation structure is accommodated in the accommodating chamber and is attached to the top of the first shell.

As a further improvement of the present disclosure, the heat dissipation structure includes a first connecting plate and a second connecting plate surrounding the first connecting plate, and both the connecting part and the blind hole are arranged on the first connecting plate; an outer side wall of the second connecting plate is provided with a positioning part, an inner side wall of the first shell is correspondingly provided with a mating part, and the positioning part and the mating part are fitted with each other so that the heat dissipation structure is accommodated and fixed in the accommodating cavity.

As a further improvement of the present disclosure, the first shell includes a top plate and an annular side plate connected with an edge of a periphery of the top plate; one end of the annular side plate away from the top plate is connected with the second shell, the perforation is arranged on the top plate, the first connecting plate of the heat dissipation structure is attached to the top plate, and the second connecting plate of the heat dissipation structure is attached to the annular side plate.

As a further improvement of the present disclosure, the positioning part is a hook arranged on the second connecting plate, and the mating part is a protrusion rib arranged on the inner side wall of the first shell.

As a further improvement of the present disclosure, the heat dissipation structure and the lamp body are both in a circular shape, the mating part is an annular protrusion rib arranged on the inner side wall of the first shell, and a plurality of hooks are arranged and evenly distributed on the outer side wall of the second connecting plate.

As a further improvement of the present disclosure, the fastener is a screw, the perforation is a screw hole, the heat dissipation structure is an insulating plastic part, and the lamp body is a metal lamp body.

The present disclosure achieves the following beneficial effects: in the present disclose, the lamp body is provided with a perforation while the heat dissipation structure is provided with a blind hole corresponding to the perforation, so that the fastener can pass through the perforation to be connected with the blind hole; in this way, the heat dissipation structure can be stretched for flattening, and meanwhile the heat dissipation path between the heat dissipation structure and each of the lamp body and the light source assembly can be shortened, thereby improving the heat dissipation rate of the whole lamp.

The above examples are only used to illustrate the technical solution of the present disclosure, but are not intended to limit the present disclosure. Although the present disclosure has been described in details with reference to the examples, it should be understood by those ordinary skilled in the art that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present disclosure.