CN223470088U - Light projector - Google Patents

Abstract

The utility model discloses a floodlight, comprising a housing, a circuit board and a reflector, wherein a plurality of lamp beads are arranged on the circuit board, and the utility model is characterized in that: a heat dissipation structure is arranged on the back of the circuit board, a circle of panels surrounding the heat dissipation structure is arranged on the back of the housing, the housing has a hollow portion, and all the lamp beads are located in the hollow portion. The floodlight is surrounded by a circle of panels surrounding the heat dissipation structure on the back of the housing, which effectively prevents the heat dissipation structure from harming people or objects, while protecting the heat dissipation structure, making it safer and more beautiful. The heat dissipation structure can be made thinner after being protected by the panels, reducing costs. In addition, the housing has a hollow portion, the circuit board is located on the back of the housing, all the lamp beads are located in the hollow portion, and the heat dissipation structure is directly arranged on the back of the circuit board, reducing the heat conduction link, lowering the thermal resistance, facilitating heat dissipation, making the heat dissipation effect of the floodlight better, and making the thickness of the floodlight thinner.

Description

Light projector

Technical Field

The utility model relates to the technical field of lamps, in particular to a projection lamp.

Background

The light projector is a lamp with the illumination intensity higher than the surrounding environment on a designated illuminated surface, for example, chinese patent application No. CN202420435376.4 discloses an LED light projector, which comprises a main shell, wherein the front side surface of the main shell is provided with a mounting seat and is covered by a front cover, the front cover and the mounting seat form a mounting cavity, a light-emitting module is arranged in the mounting cavity, a plurality of radiating fins are regularly arranged on the rear side surface of the main shell, the radiating fins and the main shell are integrally formed, a driving bin is arranged on the main shell below the radiating fins, a driving power supply and a control circuit board are arranged in the driving bin, the driving bin is covered by a rear cover, a plurality of radiating holes are formed in the surface of the main shell, the radiating holes are in an elongated structure and penetrate through the front cover.

The radiating fin of this kind of projecting lamp exposes at the casing back, very easily causes the injury to people or thing when artifical assembly or careless touch, and the radiating fin also can take place the deformation simultaneously to reduce the radiating effect, and whole naked radiating fin is also not pleasing to the eye enough, in addition, the heat is passed to the casing from lamp pearl and circuit board when the projecting lamp uses, and the heat radiation structure that passes to the retransmit carries out the heat dissipation, and the heat conduction link is more, and the radiating effect is not good enough, and the thermal resistance is higher, makes the projecting lamp thicker simultaneously.

Disclosure of Invention

In view of the shortcomings of the background art, the technical problem to be solved by the utility model is to provide a safer and more attractive projection lamp.

The utility model is realized by adopting the following technical scheme:

The utility model provides a projecting lamp, includes casing, circuit board and reflector, is equipped with a plurality of lamp pearls, characterized by on the circuit board: the back of circuit board is equipped with heat radiation structure, the back of casing is equipped with the bounding wall that the round encloses heat radiation structure, the casing has fretwork portion, all the lamp pearl is located fretwork portion.

Further, a plurality of ventilation holes are formed in the upper side and the lower side of the coaming, and the height of the coaming is higher than or equal to that of the heat dissipation structure.

Further, the front outer ring of the circuit board is adhered to the back of the shell through glue, the radiating structure comprises radiating fins adhered to the circuit board, the radiating fins are provided with a plurality of convex ribs, a first ventilating duct is formed between every two adjacent convex ribs, radiating through holes penetrate through the convex ribs along the length direction of the convex ribs, and the radiating through holes form a second ventilating duct.

Further, the circuit board is an aluminum substrate, the aluminum substrate is composed of a conducting layer, an insulating layer and an aluminum plate from top to bottom, the radiating fins and the aluminum plate are welded through laser, and the reflector is arranged in the shell to cover the periphery of the circuit board and expose the lamp beads.

Further, the ventilation holes are aligned with the first ventilation channel.

Further, a gap is formed between the coaming and the radiating fin.

Further, the radiating fin is an integrally formed metal sheet, and the raised strips are straight strips or wavy.

Further, the air holes are in a strip shape.

After adopting above-mentioned technical scheme, by round enclosing the heat radiation structure at the casing back of board, effectively prevent that heat radiation structure from damaging people or thing, heat radiation structure has been protected simultaneously, safer and pleasing to the eye, heat radiation structure is by the casing protection after can do thinner, reduce cost, in addition, the casing has fretwork portion, the circuit board is located the casing back, all lamp pearls are located fretwork portion, heat radiation structure directly sets up the back at the circuit board, the heat conduction link has been reduced, the thermal resistance is lower, be convenient for dispel the heat, make the radiating effect of projecting lamp better, make the thickness of projecting lamp thinner simultaneously.

Drawings

The utility model has the following drawings:

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

Fig. 3 is a schematic perspective view of the heat dissipation mechanism with the circuit board removed.

The heat radiation plate comprises a shell, a surrounding plate, a vent hole, a radiating fin, a raised line, a first ventilating channel, a radiating through hole, a gap, a reflecting cover and a hollowed-out part, wherein the radiating through hole is formed in the periphery of the shell, the surrounding plate is provided with the vent hole, the radiating fin is provided with the vent hole, and the radiating through hole is provided with the radiating through hole.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Referring to the drawings, the projection lamp provided by the utility model comprises a shell 1, a circuit board and a reflecting shade 9, wherein a plurality of lamp beads are arranged on the circuit board, and the projection lamp is characterized in that: the back of the circuit board is provided with a heat radiation structure, the back of the shell 1 is provided with a circle of coaming 2 surrounding the heat radiation structure, the shell 1 is provided with a hollowed-out part 10, all lamp beads are positioned in the hollowed-out part 10, the upper side and the lower side of the coaming 2 are provided with a plurality of ventilation holes 3, the height of the coaming 2 is higher than or equal to the height of the heat radiation structure, the front outer ring of the circuit board is adhered with the back of the shell 1 through glue, the heat radiation structure comprises a heat radiation fin 4 adhered with the circuit board, the heat radiation fin 4 is provided with a plurality of raised ribs 5 which are raised upwards, a first ventilation channel 6 is formed between every two adjacent ribs 5, the heat radiation through holes 7 are penetrated along the length direction of the ribs 5, the heat radiation through holes 7 form a second ventilation channel, the circuit board is an aluminum substrate, the aluminum substrate is composed of a conducting layer, an insulating layer and an aluminum plate from top to bottom, the radiating fins 4 and the aluminum plate are welded by laser, the reflecting cover 9 is arranged in the shell 1 to cover the periphery of the circuit board and expose lamp beads, the periphery of the circuit board is covered by the reflecting cover 9, such as a power supply, a triode, a piezoresistor, a fuse, a capacitor and the like (the components such as the power supply, the triode, the piezoresistor, the fuse, the capacitor and the like are arranged on the circuit board, which belongs to the prior art, the specific structure is not described in detail herein), the ventilation holes 3 are more attractive, the ventilation holes 6 are aligned with the first ventilation channels, gaps 8 are arranged between the surrounding plate 2 and the radiating fins 4, the radiating fins 4 are integrally formed metal sheets, the convex strips 5 are straight strips or wavy, the ventilation holes 3 are strip-shaped, the circuit board is adhered to the shell through glue.

In this embodiment, the heat dissipation structure on the back of the shell 1 is enclosed by a circle of the enclosing plate 2, so that people or objects are effectively prevented from being damaged by the heat dissipation structure, the heat dissipation structure is protected, the heat dissipation structure is more attractive, the heat dissipation structure can be thinner after being protected by the enclosing plate 2, the cost is reduced, in addition, the shell 1 is provided with the hollowed-out part 10, the circuit board is positioned on the back of the shell 1, all the lamp beads are positioned in the hollowed-out part 10, the heat dissipation structure is directly arranged on the back of the circuit board, the heat conduction link is reduced, the heat resistance is lower, the heat dissipation is convenient, the heat dissipation effect of the projection lamp is better, and the thickness of the projection lamp is thinner; the air holes 3 are favorable for forming convection between a heat radiating structure and the outside so as to ensure heat radiating effect, meanwhile, the air holes 3 can also be used for draining water to prevent water accumulation in the coaming from influencing heat radiation, the contact area between the heat radiating structure and air and wind flows is greatly increased by the arrangement of the first air channels 6 and the second air channels, heat generated by the lamp beads is quickly radiated by the heat radiating structure, so that the rapid cooling of the lamp beads is realized, the heat radiating effect is better, meanwhile, light attenuation is reduced, the service life of the lamp is prolonged, the first air channels 6 and the second air channels are prevented from being blocked by the arrangement of gaps 8 so as to ensure normal heat radiation of the first air channels 6 and the second air channels, the heat radiating fins 4 are integrally formed metal sheets, heat conduction and heat radiation are more uniform, the contact area between the wavy raised strips 5 and the air and wind flows is increased, the heat radiating effect is further increased, the heat radiating effect of the air holes 3 are in a strip shape and favorable for convection, and the heat radiating fins 4 and the aluminum plates are directly contacted by laser welding.

The present utility model is not limited in any way by the above-described preferred embodiments, but is not limited to the above-described preferred embodiments, and any person skilled in the art will appreciate that the present utility model can be embodied in the form of a program for carrying out the method of the present utility model, while the above disclosure is directed to equivalent embodiments capable of being modified or altered in some ways, it is apparent that any modifications, equivalent variations and alterations made to the above embodiments according to the technical principles of the present utility model fall within the scope of the present utility model.

Claims (8)

1. The utility model provides a projecting lamp, includes casing, circuit board and reflector, is equipped with a plurality of lamp pearls, characterized by on the circuit board: the back of circuit board is equipped with heat radiation structure, the back of casing is equipped with the bounding wall that the round encloses heat radiation structure, the casing has fretwork portion, all the lamp pearl is located fretwork portion.

2. The projector according to claim 1, wherein the upper and lower sides of the surrounding plate are provided with a plurality of ventilation holes, and the height of the surrounding plate is higher than or equal to the height of the heat dissipation structure.

3. The projector according to claim 2, wherein the outer ring of the front surface of the circuit board is adhered to the back surface of the housing by glue, the heat dissipation structure comprises a heat dissipation fin adhered to the circuit board, the heat dissipation fin is provided with a plurality of raised protruding strips, a first ventilation channel is formed between every two adjacent protruding strips, the protruding strips are provided with heat dissipation through holes in a penetrating manner along the length direction of the protruding strips, and the heat dissipation through holes form a second ventilation channel.

4. The projector according to claim 2, wherein the circuit board is an aluminum substrate, the aluminum substrate is composed of a conductive layer, an insulating layer and an aluminum plate from top to bottom, the heat dissipation structure and the aluminum plate are welded by laser, and the reflector is arranged in the shell to cover the periphery of the circuit board and expose the lamp beads.

5. The light projector of claim 3 or 4, wherein the ventilation holes are aligned with the first ventilation channel.

6. The projector of claim 3 or 4, wherein a gap is provided between the shroud and the heat sink.

7. The projector according to claim 3, wherein the heat sink is an integrally formed metal sheet, and the protruding strip is straight or wavy.

8. The light projector of claim 3 or 4, wherein the ventilation holes are elongated.