CN214222829U - LED street lamp - Google Patents

Abstract

The utility model provides a LED street lamp, including first casing, first casing is equipped with first chamber, the second of acceping and accepts chamber, interval first accept the chamber with the second accepts the spacer in chamber, still including set up in first accept the intracavity light source radiator, set up in light source subassembly on the light source radiator, center on the light source subassembly reflection of light cup, be fixed in the light-emitting glass of light source radiator, the light source radiator with enclose between the light-emitting glass and establish and form the light source chamber, reflection of light cup set up in the light source intracavity, the spacer includes convection current interval portion, be equipped with the convection current hole with external intercommunication in the convection current interval portion, just the spacer with the junction of light-emitting glass one side is not sealed. The utility model provides a LED street lamp can form a convection current circulation, helps making the heat that the LED light source during operation produced rapidly to dissipate to reduce the junction temperature of LED light source during operation.

Description

LED street lamp

Technical Field

The utility model relates to a street lamp technical field especially relates to a LED street lamp.

Background

In the application scene of road lighting, the LED street lamp is indispensable in people's life as a lighting tool in night life. The LED street lamp has the advantages of directional light emission, good driving characteristic, high response speed, good impact resistance, energy conservation, environmental protection, long service life and the like, thereby becoming a new generation of energy-saving light source with the most potential for replacing the traditional light source.

However, since the led (light Emitting diode) is a semiconductor device, the chip is susceptible to temperature, and if the heat is not dissipated in time, the luminous flux and the service life are affected. In the laying process of the LED street lamp, the cost needs to be controlled in the aspect of solving the heat dissipation problem due to the large engineering coverage range. The existing LED street lamp is generally internally provided with a light source radiator for radiating heat of the LED street lamp, but the heat can still be radiated in the shell of the LED lamp in the heat conduction process of the light source radiator, and the heat radiation problem of the part of heat still can affect components in the LED. And because the use scene of street lamp limits, can not directly carry out the trompil to the casing of LED street lamp back department, can cause other serious problems such as laying dust or rainy day water leakage.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a LED street lamp is in order to improve above-mentioned problem.

In a first aspect, the utility model provides a LED street lamp, including first casing, first casing is equipped with first chamber, the second of acceping and accepts chamber, interval first accept the chamber with the second accepts the spacer in chamber, still including set up in first accept the intracavity the light source radiator, set up in light source subassembly on the light source radiator, center on the reflection of light cup of light source subassembly, be fixed in the light-emitting glass of light source radiator, the light source radiator with enclose between the light-emitting glass and establish and form the light source chamber, reflection of light cup set up in the light source intracavity, the spacer includes convection current interval portion, be equipped with the convection current hole with external intercommunication in the convection current interval portion, just the spacer with the junction of light-emitting glass one side is not sealed.

Preferably, the LED street lamp further includes a second housing covering the second accommodating cavity, a fixing groove is disposed on a side of the spacer close to the second accommodating cavity, and a side of the second housing close to the spacer is fixed on the fixing groove and is not sealed with the convection spacing portion.

Preferably, the first housing includes a housing top wall, and the light source heat sink includes a heat dissipation fixing plate and heat dissipation fins disposed on one side of the heat dissipation fixing plate close to the housing top wall.

Preferably, a respirator is arranged on the heat dissipation fixing plate.

Preferably, the light source assembly comprises an aluminum substrate arranged on one side of the heat dissipation fixing plate, which is far away from the top wall of the housing, an LED light source arranged on one side of the aluminum substrate, which is far away from the light source radiator, and a lens arranged corresponding to the LED light source.

Preferably, the light-emitting glass is far away from one side of the light source assembly is provided with a decoration ring, and a glass pressure ring is arranged between the decoration ring and the light-emitting glass in a pressing mode.

Preferably, a first sealing ring for sealing the light source cavity is arranged between the light emitting glass and the light source radiator.

Preferably, a power supply assembly is arranged in the second accommodating cavity.

Preferably, the power supply assembly comprises an LED driving power supply and a surge protector.

Preferably, a second sealing ring is arranged between the second shell and the first shell.

The technical effects of the utility model are that: the utility model provides a LED street lamp can form a convection cycle, helps making the heat that the LED light source during operation produced rapidly to dissipate to reduce the junction temperature of LED light source during operation.

Drawings

Fig. 1 is a schematic structural diagram of an LED street lamp according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 5 is an enlarged view of the section C in FIG. 4 and a schematic view of the convection direction;

FIG. 6 is an exploded view of FIG. 1;

FIG. 7 is an exploded view of FIG. 1 from another perspective;

fig. 8 is a schematic structural diagram of the first housing of the LED street lamp according to an embodiment of the present invention.

100. An LED street lamp; 10. a first housing; 11. a first receiving cavity; 12. a second receiving cavity; 13. a spacer; 131. A convection current spacing part; 1311. a convection hole; 132. fixing the groove; 14. a housing top wall; 101. a housing cavity; 20. a light source heat sink; 21. a heat dissipation fixing plate; 22. a heat dissipating fin; 211. a respirator; 30. a light source assembly; 31. an aluminum substrate; 32. an LED light source; 33. a lens; 301. a light source cavity; 40. a light reflecting cup; 50. light-emitting glass; 51. a light-emitting surface; 52. fixing the edge; 501. glass compression rings; 502. a first seal ring; 60. a second housing; 61. an inner side plate; 62. A second seal ring; 70. a decorative ring; 80. a power supply component; 81. an LED driving power supply; 82. a surge protector; 90. waterproof joint

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a LED street lamp 100, as shown in fig. 1-8, including first casing 10, light source radiator 20, light source subassembly 30, anti-light cup 40, light-emitting glass 50, glass compression ring 501, second casing 60, rosette 70, power supply module 80.

Specifically, the first housing 10 is provided with a housing top wall 14, a first housing cavity 11, a second housing cavity 12, and a spacer 13, wherein the spacer 13 separates the first housing cavity 11 and the second housing cavity 12. The light source radiator 20, the light source assembly 30 and the reflective cup 40 are disposed in the first accommodating cavity 11, the light-emitting glass 50 is fixed on one side of the light source radiator 20 far away from the top wall 14 of the housing, and specifically, the light-emitting glass 50 is cambered glass. The light source assembly 30 is disposed on the light source radiator 20, the reflective cup 40 is disposed around the light source assembly 30, and the reflective cup 40 is in a hollow disk shape.

Further, the spacer 13 includes a convection current spacing portion 131 and a fixing groove 132, in one embodiment, the convection current spacing portion 131 is a portion of the spacer 13 above the fixing groove 132 and close to one side of the housing top wall 14, the LED street lamp 100 further includes a second housing 60 covering the second receiving cavity 12, the fixing groove 132 is disposed at one side of the spacer 13 close to the second receiving cavity 12, a side plate of the second housing 60 close to one side of the spacer 13 is an inner side plate 61, the inner side plate 61 is fixed on the fixing groove 132, and a gap between the inner side plate 61 and the convection current spacing portion 131 is not sealed. The convection partition 131 is provided with a convection hole 1311, and the convection hole 1311 communicates the first receiving chamber 11 with the outside of the case top wall 14 side because the space between the inner plate 61 and the convection partition 131 is not sealed. Further, since the light source heat sink 20 forms the housing cavity 101 between the housing top wall 14 and the spacer 13 in the first receiving cavity 11, that is, the housing cavity 101 communicates with the outside of the housing top wall 14 side through the convection hole 1311, in the present embodiment, two convection holes 1311 are provided, as shown in fig. 8. Meanwhile, the joint between the spacer 13 and the light-emitting glass 50 is not sealed, convection is formed between the upper and lower sides of the housing cavity 101, and the direction of the air flow forming the convection is shown by the dotted line with an arrow in fig. 5.

Specifically, the light source heat sink 20 includes a heat dissipation fixing plate 21, heat dissipation fins 22, and a waterproof joint 90, one side of the light source heat sink 20, which is away from the housing top wall 14, is provided with an aluminum substrate 31 and a light source assembly 30, and the heat dissipation fins 22 are disposed on one side of the heat dissipation fixing plate 21, which is close to the housing top wall 14, and the light source heat sink 20 is in contact with the top wall of the first housing 10 through the heat dissipation fins 22, so that heat emitted by the LED light source 32 during operation is transferred to the light source heat sink 20 through the aluminum substrate 31, and then is transferred to the first housing 10 through the heat dissipation fins 22, and then is radiated to the air. Because the air pressure in the light source cavity 301 rises due to the heat emitted by the LED light source 32 during operation, the heat dissipation fixing plate 21 is provided with the breather 211, the air pressure in the light source cavity 301 and the external air pressure are balanced by the breather 211, and the heat in the light source cavity 301 is transferred to the housing cavity 101 where the heat dissipation fins 22 are located; during the process of transferring heat to the first casing 10 and radiating the heat, a part of the heat is transferred to the casing cavity 101 by radiation. The heat transferred from the light source cavity 301 to the housing cavity 101 and the heat radiated from the heat dissipation fins 22 of the light source radiator 20 to the housing cavity 101 heat the air in the housing cavity 101 to generate a strong pressurization process, so that the housing cavity 101 is in a high-pressure state; high-temperature gas is released into the air through the arrangement of the convection holes 1311, so that a negative pressure state in the housing cavity 101 is formed after the high pressure state in the housing cavity 101 is released, after the air enters the housing cavity 101, the air is heated again by the heat transferred into the housing cavity 101 from the light source cavity 301 and the heat radiated into the housing cavity 101 by the heat radiating fins 22 of the light source radiator 20, a pressurized high-pressure state is formed again, and the air is released through the diversion holes; the connection between the combination spacer 13 and the light-emitting glass 50 is not sealed, and the connection is circulated in sequence to form a natural convection state, so that heat generated when the LED light source 32 works can be quickly dissipated, and the junction temperature of the LED light source 32 during working can be reduced.

Specifically, the light source assembly 30 includes an aluminum substrate 31, an LED light source 32 and a lens 33, the aluminum substrate 31 is disposed on a side of the heat dissipation fixing plate 21 away from the top wall 14 of the housing, the LED light source 32 is disposed on a side of the aluminum substrate 31 away from the light source heat sink 20, and the lens 33 is disposed corresponding to the LED light source 32. The lens 33 is embedded into the fixing hole of the aluminum substrate 31 through the positioning column arranged on the lens 33, so that the lens 33 is fixed at the position corresponding to the LED light sources 32 one by one, and the function of optical light distribution is achieved; the LED light source 32 is welded on the aluminum substrate 31, and by coating the heat conductive silicone grease on the side surface of the aluminum substrate 31 close to the side of the light source radiator 20, one side of the coated heat conductive silicone grease is attached to the smooth surface of the light source radiator 20 close to the side of the aluminum substrate 31, and after the light source assembly 30 is fastened by screws, the whole light source assembly is fixed on the light source radiator 20. A light source cavity 301 is formed between the light source radiator 20 and the light emergent glass 50 in a surrounding manner and is sealed by a first sealing ring 502, and the light reflecting cup 40 is arranged in the light source cavity 301; the power lines of the light source assembly 30 are electrically connected to the LED driving power 81 in the power supply assembly 80 through the waterproof connector 90 provided on the light source heat sink 20, and serve to fix and waterproof the power lines.

The reflective cup 40 is disposed around the light source assembly 30, the reflective cup 40 is in a hollow disk shape, in one embodiment, the hollow shape of the reflective cup 40 is a pentagram-like shape, and the lens 33 and the LED light source 32 form an LED light source group and a lens group with the same shape. The light reflecting cup 40 is provided with a positioning hole, and the positioning column arranged at the corresponding position on the light source radiator 20 is embedded into the positioning hole on the light reflecting cup 40 to fix the light reflecting cup 40, so that the excessive light can be effectively collected, and the glare value is reduced.

The light exiting glass 50 includes a central light exiting surface 51 and a fixing edge 52 extending along the circumferential direction of the light exiting surface 51, wherein the light exiting surface 51 is an arc surface, and the fixing edge 52 is a plane, as shown in fig. 6-7 and fig. 4.

The LED street lamp 100 further includes a decoration ring 70 disposed on one side of the light-emitting glass 50 far from the light source assembly 30, the periphery of the decoration ring 70 is petal-shaped, a glass pressing ring 501 is disposed between the decoration ring 70 and the light-emitting glass 50, and the glass pressing ring 501 is fixed on the fixing edge 52. A first sealing ring 502 for sealing the light source cavity 301 is arranged between the light-emitting glass 50 and the light source radiator 20, specifically, two small pits are arranged at the position of the light source radiator 20 corresponding to the first sealing ring 502, after the edge part of the fixed edge 52 of the light-emitting glass 50 is wrapped by the first sealing ring 502, the edge part and the first sealing ring 502 are embedded together, and the part of the first sealing ring 502 is extruded and embedded into the small pits of the light source radiator 20, so as to realize sealing; because first sealing washer 502 still has the embedded groove, the fixed border 52 embedding of light-emitting glass 50 is in the embedded groove, glass clamping ring 501 sticiss on the partial first sealing washer 502 between light-emitting glass 50 and glass clamping ring 501, through the set screw with light-emitting glass 50, first sealing washer 502, light source radiator 20 zonulae occludens, thereby form sealed light source chamber 301, play the effect of water proof, and when LED street lamp 100 received external force impact, can also play the effect of buffering, thereby reduce the destruction of external force impact to LED street lamp 100.

The power supply unit 80 includes an LED driving power supply 81 and a surge protector 82, the power supply unit 80 is disposed in the second accommodating chamber 12, and the waterproof connector 90 is disposed on the second casing 60 to fix and waterproof the electric wire connected to the power supply unit 80. The second casing 60 is covered on the second receiving cavity 12 to protect the power module 80, and a second sealing ring 62 is provided between the second casing 60 and the first casing 10. Specifically, the inner side plate 61 is fixed on the fixing groove 132 and is not sealed with the convection partition 131, the second sealing ring 62 is embedded in a groove along the edge of the second accommodating cavity 12 for a circle, the second sealing ring 62 is compacted by the second housing 60, and then the locking screw is fixed on the first housing 10, so as to form a closed electrical cavity, and finally, the LED street lamp 100 is mounted on the lamp post through the fixing screw.

To sum up, the utility model provides a LED street lamp 100, it is through set up convection current hole 1311 on spacer 13 and combine spacer 13 and the junction of light-emitting glass 50 one side not sealed, forms a convection current circulation, helps making the heat that the LED light source 32 during operation produced to dissipate rapidly to reduce the junction temperature of LED light source 32 during operation.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The utility model provides a LED street lamp, its characterized in that, includes first casing, first casing is equipped with first chamber, the second of acceping and accepts chamber, interval first accept the chamber with the second accepts the spacer in chamber, still including set up in first light source radiator of acceping the intracavity, set up in light source subassembly on the light source radiator, center on the reflection of light cup of light source subassembly, be fixed in the light-emitting glass of light source radiator, the light source radiator with enclose between the light-emitting glass and establish and form the light source chamber, reflection of light cup set up in the light source intracavity, the spacer includes convection current interval portion, be equipped with the convection current hole with external intercommunication in the convection current interval portion, just the spacer with the junction of light-emitting glass one side is not sealed.

2. The LED street lamp according to claim 1, further comprising a second housing covering the second receiving cavity, wherein a fixing groove is formed on one side of the spacer close to the second receiving cavity, and the second housing is fixed on the fixing groove close to the spacer and is not sealed with the convection current spacing portion.

3. The LED street lamp according to claim 1, wherein the first housing comprises a housing top wall, and the light source heat sink comprises a heat dissipation fixing plate and heat dissipation fins arranged on one side of the heat dissipation fixing plate close to the housing top wall.

4. The LED street lamp according to claim 3, wherein a respirator is arranged on the heat dissipation fixing plate.

5. The LED street lamp according to claim 3, wherein the light source assembly comprises an aluminum substrate disposed on a side of the heat dissipation fixing plate away from the top wall of the housing, an LED light source disposed on a side of the aluminum substrate away from the light source heat sink, and a lens disposed corresponding to the LED light source.

6. The LED street lamp according to claim 5, wherein a decoration ring is arranged on one side of the light-emitting glass, which is far away from the light source assembly, and a glass pressure ring is pressed between the decoration ring and the light-emitting glass.

7. The LED street lamp according to claim 6, wherein a first sealing ring for sealing the light source cavity is arranged between the light emitting glass and the light source radiator.

8. The LED street lamp according to claim 1, wherein a power supply assembly is disposed in the second receiving cavity.

9. The LED street light according to claim 8, wherein the power supply assembly comprises an LED driving power supply and a surge protector.

10. The LED street lamp according to claim 2, wherein a second sealing ring is arranged between the second shell and the first shell.

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