Small-power outdoor LED projection lamp

Abstract

The utility model discloses a low-power outdoor LED projection lamp which comprises a lamp shell of a stamping sheet metal structure. A power source is installed on the lower portion of the inner bottom face of the lamp shell. A PCB is installed in the position, above the power source, of the lamp shell through an adhesive layer. LED lamp beads are orderly distributed and installed on the PCB. A lens set is buckled on the LED lamp beads. A glass plate is laid on the power source and the lens set together. The inner bottom face and the outer bottom face of the lamp shell are formed into plane structures attached to the PCB and the power source. The lamp shell of the sheet metal plane structure is not prone to dust accumulation while effective heat dissipation is achieved, the overall light weight of the projection lamp is achieved, the production cost is reduced, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of floodlights, in particular to a low-power outdoor LED floodlight. Background Art

[0002] In the prior art, regardless of whether the LED floodlight is low-power or high-power, its lamp housing is mainly formed by die-casting aluminum, and fins are simultaneously formed on the back of the die-cast lamp housing to ensure the heat dissipation effect during use.

[0003] Although the existing fin setting can theoretically increase the area and improve heat dissipation, since LED floodlights are installed outdoors for a long time, the narrow space at the fins is very easy to accumulate dust, resulting in poor heat dissipation effect. Not only can the heat be effectively dissipated, but the life of the lamp is also shortened.

[0004] In addition, the existing die-cast lamp housing not only has high mold costs, but also is heavy, has a complex production process, and has high costs, resulting in high lamp costs; and the lamp housing is very prone to sand holes during the die-casting production process, resulting in the lamp housing being not waterproof. Utility Model Content

[0005] In order to solve the above problems, the present application provides a low-power outdoor LED floodlight with a reasonable structure, which can effectively dissipate heat and is not easy to accumulate dust, and realizes the overall lightweight of the floodlight, reduces production costs, and has good practicality.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A low-power outdoor LED floodlight comprises a lamp housing of a stamped sheet metal structure, a power supply is installed at the lower part of the inner bottom surface of the lamp housing, a PCB board is installed in the lamp housing above the power supply via a glue layer, LED lamp beads are arranged and installed on the PCB board in an orderly manner, a lens group is buckled on the LED lamp beads, and a glass plate is laid above the power supply and the lens group; the inner bottom surface and the outer bottom surface of the lamp housing are formed into a planar structure that fits the PCB board and the power supply.

[0008] As a further improvement of the above technical solution:

[0009] The middle part of the top surface of the lamp housing is concavely extended to form adjacent concave cavity one and concave cavity two, the concave cavity one accommodates a PCB board, LED lamp beads, and a lens group, and the concave cavity two accommodates a power supply; the circumferential edge of the glass plate is covered with a rubber ring; it also includes a pressure ring, which is pressed onto the rubber ring and the glass plate along the circumferential direction, and the pressure ring is locked and fixed to the lamp housing.

[0010] The inner concave depth of the inner concave cavity one is lower than that of the inner concave depth of the inner concave cavity two. A convex column is arranged in the inner concave cavity two. The folded edges on both sides of the power supply are in contact with the inner bottom surface of the inner concave cavity two. A slot for the convex column to pass through is provided on the folded edges. A locking nut one is locked on the convex column.

[0011] The first and second concave cavities are folded outwards along the circumferential edge to form a step surface, and the rubber ring with the glass plate embedded therein is pressed and fitted on the step surface.

[0012] The circumferential edge of the step surface is folded and extended to form an annular surface, the annular surface is arranged parallel to the step surface, and the circumferential edge of the annular surface is extended to form a surrounding wall. The pressure ring is accommodated inside the surrounding wall and fits on the annular surface.

[0013] The annular surface is provided with through holes at intervals, the pressure ring is provided with pins corresponding to the through holes one by one, and the pins are locked with locking nuts after passing through the through holes.

[0014] A respirator and a waterproof connector are installed on the two side walls of the inner concave cavity.

[0015] Side ears are symmetrically welded on the outer side walls of both sides of the lamp housing, and the side ears are arranged along the depth direction of the lamp housing cavity. The side ears on both sides are jointly mounted with a U-shaped bracket through fastening screws.

[0016] The lamp housing is formed by stamping a cold-rolled steel plate or an aluminum plate.

[0017] The LED lamp beads are soldered to the PCB board in order by using solder paste, and each lens in the lens group is bonded and fixed to the PCB board by using UV glue, and the glue layer is a heat-conducting double-sided glue.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model adopts a lamp shell with a stamped sheet metal structure to replace the existing die-cast aluminum structure, which effectively realizes the overall lightweight of the floodlight and helps to reduce production costs; by setting a lamp shell with a sheet metal plane structure, it is not easy to accumulate dust, and the PCB board and power supply are attached to the lamp shell through a plane structure to ensure effective heat dissipation, thereby ensuring the use effect and service life of the floodlight, and is particularly suitable for 10w-100w low-power floodlights.

[0020] The utility model also has the following advantages:

[0021] The lamp housing is formed by stamping sheet metal, with low production investment in molds, simple stamping process, and no defects such as sand holes that affect waterproofing, which can effectively ensure the normal use of the floodlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a schematic structural diagram of the utility model from another viewing angle.

[0024] Figure 3 It is an exploded view of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the lamp housing of the utility model.

[0026] Figure 5 This is a schematic diagram of the installation of the power supply of the utility model in the lamp housing.

[0027] Among them: 1. bracket; 2. lamp housing; 3. power supply; 4. adhesive layer; 5. PCB board; 6. lens group; 7. glass plate; 8. rubber ring; 9. pressure ring; 10. waterproof connector; 11. fastening screws; 12. respirator;

[0028] 20. side ears; 21. surrounding wall; 22. annular surface; 23. through hole; 24. step surface; 25. convex column; 26. concave cavity 2; 27. concave cavity 1;

[0029] 30. Locking nut 1; 31. Folding edge; 32. Notch;

[0030] 60. LED lamp beads;

[0031] 91. Lock nut 2. DETAILED DESCRIPTION

[0032] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a low-power outdoor LED floodlight of the present embodiment comprises a lamp housing 2 of a stamped sheet metal structure, a power supply 3 is installed at the lower part of the inner bottom surface of the lamp housing 2, a PCB board 5 is installed in the lamp housing 2 above the power supply 3 through a glue layer 4, LED lamp beads 60 are orderly arranged and installed on the PCB board 5, a lens group 6 is buckled on the LED lamp beads 60, and a glass plate 7 is laid together above the power supply 3 and the lens group 6; the inner bottom surface and the outer bottom surface of the lamp housing 2 are formed into a planar structure that fits the PCB board 5 and the power supply 3.

[0034] In the present embodiment, a lamp housing 2 with a stamped sheet metal structure is used to replace the existing die-cast aluminum structure, which effectively realizes the overall lightweight of the floodlight and helps to reduce production costs; by setting a lamp housing 2 with a sheet metal plane structure, it is not easy to accumulate dust, and the PCB board 5 and the power supply 3 are attached to the lamp housing 2 through a plane structure to ensure effective heat dissipation.

[0035] like Figure 4As shown, the middle portion of the top surface of the lamp housing 2 is concavely extended to form adjacently arranged concave cavity 1 27 and concave cavity 2 26, the concave cavity 1 27 accommodates a PCB board 5, LED lamp beads 60, and a lens group 6, and the concave cavity 2 26 accommodates a power supply 3; a rubber ring 8 is sleeved on the circumferential edge of the glass plate 7; and a pressure ring 9 is also included, which is pressed onto the rubber ring 8 and the glass plate 7 along the circumferential direction, and the pressure ring 9 is locked and fixed to the lamp housing 2.

[0036] In this embodiment, the lamp housing 2 of the stamped sheet metal structure is combined with the glass plate 7 provided at the opening via a press-fitted rubber ring, which effectively ensures the waterproof performance of the entire floodlight.

[0037] The concave depth of the concave cavity 1 27 is lower than that of the concave depth of the concave cavity 26. The concave cavity 26 is provided with a convex column 25. The folded edges 31 on both sides of the power supply 3 are in contact with the inner bottom surface of the concave cavity 26. The folded edges 31 are provided with slots 32 for the convex column 25 to pass through. The convex column 25 is locked with a locking nut 1 30. Figure 5 As shown, reliable and quick installation of the power supply 3 inside the lamp housing 2 is achieved.

[0038] The first concave cavity 27 and the second concave cavity 26 are folded outward along the circumferential edge to form a step surface 24 , and the rubber ring 8 with the glass plate 7 embedded therein is pressed and fitted on the step surface 24 to achieve stable assembly of the glass plate 7 on the lamp housing 2 .

[0039] The circumferential edge of the step surface 24 is folded and extended to form an annular surface 22 . The annular surface 22 is arranged parallel to the step surface 24 . The circumferential edge of the annular surface 22 is extended to form a surrounding wall 21 . The pressure ring 9 is accommodated inside the surrounding wall 21 and fits on the annular surface 22 .

[0040] In the present embodiment, the pressure ring 9 is accommodated by the annular surface 22 in combination with the surrounding wall 21, and the glass plate 7 and the rubber ring 8 are accommodated by the step surface 24. While the glass plate 7 is reliably installed relative to the lamp housing 2, the surface of the pressure ring 9 is basically flat and located in the same plane as the end surface of the lamp housing 2, which effectively ensures and improves the appearance of the floodlight.

[0041] Through holes 23 are provided at intervals on the annular surface 22 , and pins corresponding to the through holes 23 are provided on the pressure ring 9 . After the pins pass through the through holes 23 , locking nuts 91 are installed to achieve fast and reliable installation of the pressure ring 9 relative to the lamp housing 2 .

[0042] A respirator 12 and a waterproof connector 10 are installed on the side wall of the second concave cavity 26 .

[0043] In this embodiment, the respirator 12 can adopt an existing commercially available product, such as an M12 waterproof and breathable respirator, which can be breathable to ensure that the air pressure inside and outside the floodlight is consistent, while ensuring waterproofness.

[0044] Side ears 20 are symmetrically welded on the outer walls of both sides of the lamp housing 2 . The side ears 20 are arranged along the depth direction of the cavity of the lamp housing 2 . The side ears 20 on both sides are jointly mounted with the U-shaped bracket 1 through the fastening screws 11 .

[0045] In this embodiment, the side ears 20 may be a sheet metal stamping structure, which is welded and installed on the outer side of the lamp housing 2 .

[0046] The lamp housing 2 is formed by stamping a cold-rolled steel plate or an aluminum plate.

[0047] The LED lamp beads 60 are soldered to the PCB board 5 in order by using solder paste, and each lens in the lens group 6 is bonded and fixed to the PCB board 5 by using UV glue, and the glue layer 4 is a heat-conducting double-sided glue.

[0048] The installation method of the utility model floodlight is:

[0049] The cold-rolled steel plate or aluminum plate is punched into the shape of the lamp housing 2 on a punching machine, two M4 screws are riveted in the second concave cavity 26 to form a protrusion 25, the side ears 20 on both sides are welded to the stamped part of the lamp housing 2, and high-temperature spraying is performed to obtain the final lamp housing 2.

[0050] The LED lamp bead 60 is soldered to the PCB board 5 using solder paste, and the lens group 6 is mounted on the PCB board 5 corresponding to the LED lamp bead 60; UV glue can be applied to the four sides and the middle position of each lens in the lens group 6, and the UV machine emits 10-400nm electromagnetic radiation to make the photosensitizer in the UV glue produce active free radicals or ion radicals and undergo polymerization, cross-linking and grafting reactions. The UV glue is converted from liquid to solid to bond the lens and the PCB board 5 together, completing the installation of the lens group 6 and the LED lamp bead 60 on the PCB board 5.

[0051] A thermally conductive double-sided tape is pasted on the concave cavity 27 of the lamp housing 2, and a PCB board 5 equipped with a lens group 6 and an LED lamp bead 60 is pasted into the concave cavity 27, so that the PCB board 5 is fitted and fixed in the lamp housing 2. The heat generated by the LED lamp bead 60 can be transferred to the lamp housing 2 through the PCB board 5 and the thermally conductive double-sided tape, and then radiated into the outside air.

[0052] The power supply 3 is fixedly installed in the concave cavity 26 of the lamp housing 2 through a locking nut 30; the DC output line of the power supply 3 is welded to the PCB board 5, and the input line of the power supply 3 can be led to the outside of the lamp housing 2 through a waterproof connector 10; and a respirator 12 is installed on the lamp housing 2.

[0053] A rubber ring 8 is installed on the circumferential edge of the glass plate 7 and placed at the opening of the lamp housing 2, so that the glass plate 7 covers the openings of the concave cavity 1 27 and the concave cavity 2 26 of the lamp housing 2; a pressure ring 9 is covered on the glass plate 7, and the pin on the pressure ring 9 passes backward through the through hole 23 of the lamp housing 2, and a locking nut 2 91 is locked on the pin at the back of the lamp housing 2, so that the glass plate 7 and the rubber ring 8 are pressed by the pressure ring 9, which can effectively prevent water and reach IP66.

[0054] Finally, the bracket 1 is installed on the lamp housing 2 to complete the installation of the floodlight.

[0055] In this embodiment, the lamp housing 2 is formed by stamping sheet metal, the production investment of the mold and the like is low, the stamping process is simple, and no defects such as sand holes that affect waterproofing are generated, which can effectively ensure the normal use of the floodlight.

[0056] The utility model has a simple and compact structure, realizes the lightweight of the floodlight, and can ensure effective heat dissipation, thereby guaranteeing the use effect and service life of the floodlight, and is particularly suitable for low-power floodlights of 10W-100W.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A low-power outdoor LED floodlight, characterized by: The invention comprises a lamp housing (2) of a stamped sheet metal structure, a power supply (3) being installed at the lower part of the inner bottom surface of the lamp housing (2), a PCB board (5) being installed in the lamp housing (2) above the power supply (3) via a glue layer (4), LED lamp beads (60) being arranged and installed in an orderly manner on the PCB board (5), a lens group (6) being buckled on the LED lamp beads (60), and a glass plate (7) being laid above the power supply (3) and the lens group (6); the inner bottom surface and the outer bottom surface of the lamp housing (2) are formed into a planar structure that fits the PCB board (5) and the power supply (3).

2. A low-power outdoor LED floodlight as claimed in claim 1, characterized in that: The middle part of the top surface of the lamp housing (2) is concavely extended to form a concave cavity 1 (27) and a concave cavity 2 (26) arranged adjacent to each other. The concave cavity 1 (27) contains a PCB board (5), an LED lamp bead (60), and a lens group (6), and the concave cavity 2 (26) contains a power supply (3). The glass plate (7) is provided with a rubber ring (8) on its circumferential edge. The lamp housing (2) also includes a pressure ring (9), which is pressed onto the rubber ring (8) and the glass plate (7) along the circumferential direction, and the pressure ring (9) is locked and fixed to the lamp housing (2).

3. A low-power outdoor LED floodlight as claimed in claim 2, characterized in that: The inner concave depth of the inner concave cavity (27) is lower than that of the inner concave depth of the inner concave cavity (26). A convex column (25) is arranged in the inner concave cavity (26). The folded edges (31) on both sides of the power supply (3) are in contact with the inner bottom surface of the inner concave cavity (26). The folded edges (31) are provided with slots (32) for the convex column (25) to pass through. The convex column (25) is locked with a locking nut (30).

4. A low-power outdoor LED floodlight as claimed in claim 2, characterized in that: The first concave cavity (27) and the second concave cavity (26) are folded outwards along the circumferential edge to form a step surface (24), and the rubber ring (8) with the glass plate (7) embedded therein is pressed and fitted on the step surface (24).

5. A low-power outdoor LED floodlight as claimed in claim 4, characterized in that: The circumferential edge of the step surface (24) is folded and extended to form an annular surface (22). The annular surface (22) is arranged parallel to the step surface (24). The circumferential edge of the annular surface (22) is extended to form a surrounding wall (21). The pressure ring (9) is accommodated inside the surrounding wall (21) and fits on the annular surface (22).

6. A low-power outdoor LED floodlight as claimed in claim 5, characterized in that: The annular surface (22) is provided with through holes (23) at intervals, and the pressure ring (9) is provided with pins corresponding to the through holes (23) one by one. The pins pass through the through holes (23) and are locked with locking nuts (91).

7. A low-power outdoor LED floodlight as claimed in claim 2, characterized in that: A respirator (12) and a waterproof connector (10) are installed on the second side wall (26) of the inner concave cavity.

8. A low-power outdoor LED floodlight as claimed in claim 1, characterized in that: Side ears (20) are symmetrically welded on the outer side walls of both sides of the lamp housing (2), the side ears (20) are arranged along the depth direction of the cavity of the lamp housing (2), and the side ears (20) on both sides are jointly mounted with a U-shaped bracket (1) via fastening screws (11).

9. A low-power outdoor LED floodlight as claimed in claim 1, characterized in that: The lamp housing (2) is formed by stamping a cold-rolled steel plate or an aluminum plate.

10. A low-power outdoor LED floodlight as claimed in claim 1, characterized in that: The LED lamp beads (60) are soldered to the PCB board (5) in an orderly manner using solder paste, and each lens in the lens group (6) is bonded and fixed to the PCB board (5) using UV glue, and the glue layer (4) is a heat-conductive double-sided glue.

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