Head lamp

Abstract

The utility model discloses a head lamp which comprises an annular ring, a light-transmitting lens, a funnel-shaped reflecting lamp cup, an LED lamp bead, an aluminum or copper heat dissipation device and a circular bowl-shaped shell. The light-transmitting lens is fixedly connected to the top bowl opening of the bowl-shaped shell through the ring; a reflecting lamp cup is fixed in the bowl cavity, a lamp bead hole is formed in the inner bottom of the reflecting lamp cup, an LED lamp bead is arranged at the bottom of the reflecting lamp cup, the LED lamp bead is arranged at the position of the lamp bead hole, and an opening of the reflecting lamp cup faces the bowl opening; the heat dissipation device is fixed to the bottom in the bowl cavity, and the bottom of the LED lamp bead is fixedly connected to the top of the heat dissipation device. A plurality of long-strip-shaped heat dissipation holes are formed in the bottom of the bowl-shaped shell, and division bars are arranged between the long-strip-shaped heat dissipation holes; a plurality of long-strip-shaped heat dissipation grooves are formed in the bottom of the heat dissipation device, and cooling fins are arranged between the long-strip-shaped heat dissipation grooves. The long-strip-shaped heat dissipation holes are adaptively aligned with the long-strip-shaped heat dissipation grooves, and the heat dissipation fins are adaptively aligned with the inner walls of the division bars. When touching the bottom of the bowl-shaped shell, a hand cannot be burnt; the heat dissipation area is increased by forming the long-strip-shaped heat dissipation grooves, and the heat dissipation device can be suitable for heat dissipation of high-power LED lamp beads.

Description

Technical Field

[0001] The utility model relates to a head-mounted headlamp for outdoor use, in particular to a headlamp. Background Art

[0002] 1. Chinese patent document publication number: CN206055290U, discloses a rapid heat dissipation headlamp, comprising a head bowl (1), the outer wall of the head bowl (1) is provided with a heat dissipation hole (11), the inner wall of the head bowl (1) is fixed with a heat dissipation aluminum sheet (12), the heat dissipation aluminum sheet (12) blocks and closes the heat dissipation hole (11), and part of the aluminum sheet is exposed on the hole; a lamp cup (13) is installed in the head bowl (1), and the bottom of the lamp cup (13) is connected to a heat dissipation column (14) The bottom end of the heat dissipation column (14) contacts the heat dissipation aluminum sheet (12) for heat transfer; the bottom of the lamp cup (13) is provided with an LED lamp bead (15), the LED lamp bead (15) is fixedly connected to the heat dissipation aluminum substrate (16), and the heat dissipation aluminum substrate (16) is in contact with the heat dissipation column (14); the top of the head bowl (1) is fixed with a light-transmitting lens (18) and a lens fixing ring (19), and the lens fixing ring (19) is tightened on the top of the head bowl (1) to fix the light-transmitting lens (18).

[0003] The heat dissipation aluminum sheet (12) blocks part of the heat dissipation hole (11) and exposes the aluminum sheet at the hole opening to dissipate heat externally. The outer surface of the heat dissipation aluminum sheet (12) is a plane, and its area is small, and the heat dissipation efficiency is poor. It is only suitable for heat dissipation of LED lamp beads below 8 watts. If the heat dissipation hole (11) is made larger, the surface area of the aluminum sheet exposed at the hole opening of the heat dissipation hole (11) is too large, and people can easily be burned accidentally when holding the headlamp.

[0004] 2. Chinese patent document publication number: CN205655244U, discloses a headlamp heat dissipation device, the headlamp heat dissipation device comprising a lamp cup housing (1), the bottom of the lamp cup housing (1) is provided with a through hole (11), and a metal heat sink (12) is fixed on the through hole (11); a lamp cup (2) is placed in the lamp cup housing (1), an aluminum-based circuit board (21) is connected to the outer bottom of the lamp cup (2), an LED lamp bead (22) is fixed on the aluminum-based circuit board (21), and the LED lamp bead (22) is arranged on the inner bottom of the cup.

[0005] The bottom of the lamp cup housing (1) is provided with a through hole (11), and a metal heat sink (12) is fixed on the through hole (11). There is only one through hole (11), and the metal heat sink (12) is a plane with a small area and poor heat dissipation efficiency. It is only suitable for heat dissipation of LED lamp beads below 5 watts and cannot be used for high-power LED lamp beads. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a headlamp with a reasonable structural design, a large heat dissipation area, and is not prone to burns.

[0007] The solutions to the above technical problems are:

[0008] A headlamp comprises a ring, a translucent lens, a funnel-shaped reflector lamp cup, LED lamp beads, an aluminum or copper heat dissipation device, and a circular bowl-shaped shell; the bowl-shaped shell is made of hard plastic; a wire hole is provided on the side wall of the bowl-shaped shell; a translucent lens is provided on the top bowl mouth of the bowl-shaped shell, and the translucent lens is connected to the top bowl mouth of the bowl-shaped shell through the ring and fixed; the interior of the bowl-shaped shell is a bowl cavity, in which a reflector lamp cup is fixed, and a lamp bead hole is provided at the inner bottom of the reflector lamp cup, and LED lamp beads are provided at the bottom of the reflector lamp cup, and the LED lamp beads are arranged at the lamp bead hole, and the opening of the reflector lamp cup faces the bowl mouth; the heat dissipation device is fixed to the bottom of the bowl cavity, and the bottom of the LED lamp beads is fixedly connected to the top of the heat dissipation device; a plurality of long strip heat dissipation holes are provided on the bottom of the bowl-shaped shell, and partition bars are provided between the long strip heat dissipation holes; a plurality of long strip heat dissipation grooves are provided on the bottom of the heat dissipation device, and heat dissipation fins are provided between the long strip heat dissipation grooves; the long strip heat dissipation holes are adapted to align with the long strip heat dissipation grooves, and the heat dissipation fins are adapted to align with the inner wall of the partition bar.

[0009] The beneficial effects of this headlamp include: the width of the elongated heat dissipation holes and elongated heat dissipation slots are narrowed to prevent them from being directly exposed to the outside. Hands and fingers cannot touch the bottom wall of the heat sink, and even if a hand accidentally touches the bottom of the bowl-shaped housing, it will not directly contact the heat dissipation device and cause burns. By providing a plurality of elongated heat dissipation slots at the bottom of the heat dissipation device, the heat dissipation area is increased. The inner walls of the elongated heat dissipation slots further increase the heat dissipation area. This makes it suitable for cooling high-power LED lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 、 Figure 2 、 Figure 3 A three-dimensional diagram of the product of the utility model;

[0011] Figure 4 It is a side view of the product of this utility model;

[0012] Figure 5 It is a cross-sectional view of the product of the utility model;

[0013] Figure 6 、 Figure 7 、 Figure 8 This is a disassembled diagram of the bowl-shaped housing, reflector lamp cup, and heat dissipation device of the utility model;

[0014] Figure 9 、 Figure 10 This is a three-dimensional diagram of the reflector lamp cup of the utility model;

[0015] Figure 11This is a three-dimensional diagram of the heat dissipation device of the utility model;

[0016] Figure 12 、 Figure 13 This is a disassembled diagram of the heat dissipation device of the utility model product;

[0017] Figure 14 This is a disassembled diagram of the ring, light-transmitting lens, soft rubber sealing ring, and bowl-shaped shell of the utility model;

[0018] Figure 15 、 Figure 16 This is a disassembled diagram of the product of this utility model.

[0019] Ring 1, translucent lens 2, reflective lamp cup 3, lamp bead hole 31, flange 32, soft rubber sealing ring 33, LED lamp bead 4, heat dissipation device 5, bowl-shaped shell 6, wire hole 61, bowl cavity 62, elongated heat dissipation hole 63, spacer 64, positioning groove 641, elongated heat dissipation groove 5A, heat sink 5B, positioning rib 5B1, heat dissipation base component 51, lamp bead aluminum base plate 52, aluminum heat dissipation gasket 53, positioning gasket 7, annular positioning step 71, YAN trademark letter heat dissipation hole 8. DETAILED DESCRIPTION

[0020] like Figures 1 to 16As shown: a headlamp, including a ring 1, a translucent lens 2, a funnel-shaped reflective lamp cup 3, LED lamp beads 4, an aluminum or copper heat dissipation device 5, and a circular bowl-shaped shell 6; the bowl-shaped shell 6 is made of hard plastic; the side wall of the bowl-shaped shell 6 is provided with a wire hole 61 for passing wires into and connecting to the LED lamp beads 4 for power lighting; the top bowl mouth of the bowl-shaped shell 6 is provided with a translucent lens 2, that is: the translucent lens 2 is placed above the top bowl mouth section of the bowl-shaped shell 6, and the translucent lens 2 is made of glass; the translucent lens 2 is connected to the top bowl mouth of the bowl-shaped shell 6 through the ring 1 and fixed, and the ring 1 and the outer wall of the top bowl mouth of the bowl-shaped shell 6 are twisted and connected by a threaded structure, and are detachably connected; the interior of the bowl-shaped shell 6 is a bowl cavity 62, which is funnel-shaped, and the bowl cavity 62 is fixed There is a reflective lamp cup 3, and there is a space between the outer wall of the reflective lamp cup 3 and the inner wall of the bowl-shaped shell 6, which plays a role in heat insulation and reduces the high-temperature heat directly transferred to the bowl-shaped shell 6 as much as possible. The heat transfer rate is low and it is not hot to hold. A lamp bead hole 31 is opened in the center of the inner bottom of the reflective lamp cup 3, and an LED lamp bead 4 is set at the bottom of the reflective lamp cup 3. The LED lamp bead 4 is arranged at the lamp bead hole 31, and the opening of the reflective lamp cup 3 faces the bowl mouth; the heat dissipation device 5 is fixed to the bottom of the bowl cavity 62, and the bottom of the LED lamp bead 4 is fixedly connected to the top of the heat dissipation device 5; the bowl cavity 62 is connected to the wire hole 61; the main technical improvement of this product is that: a plurality of long strip heat dissipation holes 63 are opened at the bottom of the bowl-shaped shell 6; preferably: the width of the long strip heat dissipation holes 63 is 2 mm to 5 mm and the length is 2 mm to 5 mm. 1 cm to 3 cm; preferably: the number of the long strip heat dissipation holes 63 is 4 to 8; there are spacers 64 between the long strip heat dissipation holes 63; preferably: the width of the spacers 64 is 2 mm to 5 mm, and the length is 1 cm to 3 cm; a plurality of long strip heat dissipation grooves 5A are provided at the bottom of the heat dissipation device 5, and heat dissipation fins 5B are provided between the long strip heat dissipation grooves 5A; preferably: the number of the long strip heat dissipation grooves 5A is 4 to 8, and the number of the long strip heat dissipation grooves 5A is generally the same as the number of the long strip heat dissipation holes 63; preferably: the width of the long strip heat dissipation grooves 5A is the same as the width of the long strip heat dissipation holes 63, and the depth of the long strip heat dissipation grooves 5A is 4 mm to 1 cm. The deeper the depth of the long strip heat dissipation grooves 5A, the more area of the inner wall of the groove, and the better the heat dissipation efficiency. Good; the long strip heat dissipation holes 63 are adapted to align with the long strip heat dissipation grooves 5A and pass directly to the outside for ventilation and heat dissipation; the heat sink 5B is adapted to align with the inner wall of the partition 64 to prevent it from being directly exposed to the outside, and human hands will not touch the bottom wall of the heat sink 5B, and fingers will not touch the long strip heat dissipation grooves 5A; when the LED lamp beads 4 are working, the heat is transferred to the heat dissipation device 5, and the heat of the heat dissipation device 5 is dissipated through the inner wall surfaces of the several long strip heat dissipation grooves 5A, and the heat is dissipated to the outside through the space of the long strip heat dissipation grooves 5A and the long strip heat dissipation holes 63; this product can reduce the area of heat dissipation holes opened in the main body of the bowl-shaped shell 6, and increase the heat dissipation area by opening several long strip heat dissipation grooves 5A at the bottom of the heat dissipation device 5. The inner wall surfaces of the several long strip heat dissipation grooves 5A serve to increase more heat dissipation area;The inner wall area of the elongated heat dissipation slots 5A is several times greater than that of the elongated heat dissipation holes 63, resulting in high heat dissipation efficiency and effectiveness. The space between the elongated heat dissipation holes 63 and the elongated heat dissipation slots 5A provides ventilation. By making the widths of the elongated heat dissipation holes 63 and the elongated heat dissipation slots 5A smaller and narrower, a person's hand, if accidentally touching the bottom of the bowl-shaped housing 6, will not directly contact the heat dissipation device 5 and cause burns. This product is particularly suitable for cooling high-power LED headlights, such as those in the 20-40 watt range.

[0021] Preferably, the bottom of the reflector lamp cup 3 is pressed against the top of the heat dissipation device 5 to strengthen and fix the reflector lamp cup 3 .

[0022] Preferably, the bottom of the heat sink 5 is tightly fixed to the bottom of the bowl cavity 62 , and the heat sink 5B is adapted to be aligned with the inner wall of the spacer 64 and tightly fixed, thereby improving the stability and firmness of the heat sink 5 fixed to the bottom of the bowl cavity 62 .

[0023] Preferably, the bottom of the heat dissipation device 5 is integrally injection molded with the bowl-shaped housing 6 to provide waterproofing and improve production efficiency. The long heat dissipation holes 63 and the spacers 64 are integrally injection molded with the bowl-shaped housing 6.

[0024] Preferably, a positioning rib 5B1 extends from the bottom of the heat sink 5B; a positioning groove 641 is formed on the inner bottom of the spacer 64, and the positioning rib 5B1 is embedded in the positioning groove 641 for fixation, thereby achieving rapid positioning and installation, increasing the connection area, and improving the waterproof effect; even if water enters the elongated heat dissipation groove 5A through the elongated heat dissipation hole 63, there is no need to worry about water seeping into the inner wall of the headlamp.

[0025] Preferably, the heat dissipation device 5 includes a heat dissipation base member 51, which is integrally formed by metal processing machinery. The bottom of the heat dissipation base member 51 is provided with a plurality of elongated heat dissipation slots 5A, which are generally formed by die casting or cutting. The heat dissipation base member 51 is circular and flat.

[0026] Preferably: the heat dissipation device 5 also includes a lamp bead aluminum substrate 52, the top of the lamp bead aluminum substrate 52 is bonded and fixedly connected to the LED lamp bead 4, the heat dissipation bottom component 51 and the lamp bead aluminum substrate 52 are stacked, tightly and fixedly connected, and a clamped thermal conductive agent can be added between them to improve the heat dissipation efficiency and effect. The heat from the working LED lamp bead 4 is directly transferred to the lamp bead aluminum substrate 52, and the lamp bead aluminum substrate 52 is then transferred to the heat dissipation bottom component 51; the lamp bead aluminum substrate 52 has a certain area, which improves the efficiency of the heat dissipation of the LED lamp bead 4 to the heat dissipation bottom component 51; the lamp bead aluminum substrate 52 is set at the outer bottom of the reflector lamp cup 3.

[0027] Preferably: the heat dissipation device 5 also includes an aluminum heat dissipation gasket 53, an LED lamp bead 4 is arranged in the middle of the aluminum heat dissipation gasket 53, the aluminum heat dissipation gasket 53 and the lamp bead aluminum substrate 52 are stacked, tightly and fixedly connected, and a clamped thermal conductive agent can be added between them to improve the heat dissipation efficiency and effect, the outer bottom cross-section of the reflector lamp cup 3 is tightly and fixedly connected to the aluminum heat dissipation gasket 53, and a clamped thermal conductive agent can be added between them to improve the heat dissipation efficiency and effect; the outer bottom of the reflector lamp cup 3 is bonded to the outer circumference of the aluminum heat dissipation gasket 53 and the lamp bead aluminum substrate 52 with high-temperature resistant glue; the reflector lamp cup is made of aluminum. Since the LED lamp bead 4 must be centered at the center of the inner bottom of the reflector lamp cup 3, the bottom cross-sectional wall of the reflector lamp cup 3 is relatively thin, and the LED lamp bead 4 has a certain thickness, the LED lamp bead 4 cannot be arranged too far in or too far out of the lamp bead hole 31, which will affect the focusing effect, so it must be raised to a suitable height position so that it can be focused; the reflector lamp cup 3 made of aluminum also has an auxiliary heat dissipation function. The heat of the LED lamp bead 4 when working is transferred to the lamp bead aluminum substrate 52, and then transferred to the reflector lamp cup 3 through the aluminum heat dissipation gasket 53, increasing the heat dissipation path and increasing the heat dissipation area.

[0028] The circle hole of the aluminum heat dissipation gasket 53 is arranged with a positioning gasket 7, which just fits. The circle hole of the aluminum heat dissipation gasket 53 positions the positioning gasket 7. The positioning gasket 7 is made of plastic and has a heat insulation effect to prevent heat from being transferred to the LED lamp bead 4 body. It is not easy to damage or scratch the surface of the LED lamp bead 4 during installation. The outer wall of the positioning gasket 7 is provided with an annular positioning step 71. The circle hole of the positioning gasket 7 is arranged with the LED lamp bead 4. The LED lamp bead 4 is inserted into the circle hole of the positioning gasket 7. The upper section of the positioning gasket 7 is inserted into the lamp bead hole 31 to fix it in position, which just fits. The bottom of the reflector lamp cup 3 is inserted into the annular positioning step 71 to fix it; the positioning gasket 7 and the reflector lamp cup 3 are installed in the right place and will not deviate from the center point. In this way, the reflector lamp cup 3 is installed more centered, which improves the installation efficiency; when the headlamp accidentally falls to the ground and vibrates, the bottom of the reflector lamp cup 3 will not deviate, which improves the installation stability of the reflector lamp cup 3.

[0029] The heat dissipation device 5 is composed of a heat dissipation bottom component 51 , a lamp bead aluminum base plate 52 , and an aluminum heat dissipation gasket 53 .

[0030] The top edge of the reflector lamp cup 3 extends outward with a circle of flange 32, and the top section of the bowl-shaped shell 6 is pressed against the opposite side of the flange 32 and is clamped and fixed by the ring 1. When the headlamp accidentally falls to the ground and vibrates, the top of the reflector lamp cup 3 will not be displaced, thereby improving the installation stability of the reflector lamp cup 3; a soft rubber sealing ring 33 is clamped between the flange 32 and the transparent lens 2, which is waterproof and will not damage the transparent lens 2.

[0031] The bottom cross-sectional wall of the bowl-shaped shell 6 is provided with a YAN trademark letter heat dissipation hole 8, and a partial bottom flat wall surface of the heat dissipation bottom component 51 is closely exposed in the YAN trademark letter heat dissipation hole 8, which plays a role in both trademark identification and heat dissipation.

Claims

1. A headlamp comprising a ring, a translucent lens, a funnel-shaped reflector lamp cup, LED lamp beads, an aluminum or copper heat sink, and a circular bowl-shaped housing; the bowl-shaped housing is made of hard plastic; a wire hole is formed in the side wall of the bowl-shaped housing; a translucent lens is provided at the top rim of the bowl-shaped housing, and the translucent lens is fixed to the top rim of the bowl-shaped housing via the ring; the interior of the bowl-shaped housing defines a bowl cavity, in which the reflector lamp cup is fixed; a lamp bead hole is formed in the inner bottom of the reflector lamp cup, and an LED lamp bead is provided at the bottom of the reflector lamp cup, the LED lamp bead is arranged at the lamp bead hole, and the reflector lamp cup opening faces the bowl rim; the heat sink is fixed to the bottom of the bowl cavity, and the bottom of the LED lamp bead is fixedly connected to the top of the heat sink; the characteristics are: The bottom of the bowl-shaped shell is provided with a plurality of long heat dissipation holes, and partitions are provided between the long heat dissipation holes; the bottom of the heat dissipation device is provided with a plurality of long heat dissipation grooves, and heat dissipation fins are provided between the long heat dissipation grooves; the long heat dissipation holes are adapted to be aligned with the long heat dissipation grooves, and the heat dissipation fins are adapted to be aligned with the inner walls of the partitions.

2. The headlamp according to claim 1, characterized in that: The bottom of the reflector lamp cup is pressed against the top of the heat dissipation device.

3. The headlamp according to claim 1, characterized in that: The bottom of the heat dissipation device is tightly fixed to the bottom of the bowl cavity, and the heat dissipation fins are adapted to be aligned with the inner wall of the partition bar and tightly fixed.

4. The headlamp according to claim 3, characterized in that: The bottom of the heat dissipation device and the bowl-shaped shell are integrally injection-molded.

5. The headlamp according to claim 1, characterized in that: A positioning rib extends from the bottom of the heat sink; a positioning groove is formed on the inner bottom of the spacer, and the positioning rib is embedded in the positioning groove for fixation.

6. The headlamp according to any one of claims 1 to 5, characterized in that: The heat dissipation device comprises a heat dissipation bottom component which is integrally formed and has a plurality of long heat dissipation slots on the bottom of the heat dissipation bottom component.

7. The headlamp according to claim 6, characterized in that: The heat dissipation device also includes a lamp bead aluminum substrate, the top of the lamp bead aluminum substrate is fixedly connected to the LED lamp bead, the heat dissipation bottom component is stacked and fixedly connected to the lamp bead aluminum substrate, and the outer bottom of the reflective lamp cup is provided with the lamp bead aluminum substrate.

8. The headlamp according to claim 7, characterized in that: The heat dissipation device also includes an aluminum heat dissipation gasket, an LED lamp bead is arranged in the middle of the aluminum heat dissipation gasket, the aluminum heat dissipation gasket is laminated and fixedly connected to the lamp bead aluminum substrate, and the outer bottom section of the reflector lamp cup is fixedly connected to the aluminum heat dissipation gasket; the reflector lamp cup is made of aluminum.

9. The headlamp according to claim 8, characterized in that: The circle hole of the aluminum heat dissipation washer is provided with a positioning washer, the outer wall of the positioning washer is provided with an annular positioning step, the circle hole of the positioning washer is provided with an LED lamp bead, the upper section of the positioning washer is inserted into the lamp bead hole, and the bottom of the reflector lamp cup is inserted into the annular positioning step for fixation.

10. The headlamp according to any one of claims 1 to 5, characterized in that: The top edge of the reflector lamp cup extends outward with a flange, the top section of the bowl-shaped shell is pressed against the reverse side of the flange, and a soft rubber sealing ring is clamped between the flange and the light-transmitting lens.

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