Rotatable sand screen lens device

Abstract

The present invention provides a rotatable sand curtain lens device, which can be used for the projection lens of a transmission-type headlamp, comprising a lens, sand, a decorative ring, and a rotating device; the lens is a combined convex lens, comprising a front surface of the lens, a middle surface of the lens, an air gap, and a rear surface of the lens; the air gap is between the middle surface of the lens and the rear surface of the lens; the decorative ring is a wedge-shaped groove; and the sand is located in the wedge-shaped groove. The decorative ring is located at the bottom during driving; when the vehicle stops and the engine is turned off, the sand curtain lens system rotates 180 degrees up and down, and the sand fills the entire air gap to form an opaque white sand curtain. The problem of sun spot convergence of the car can be well solved. The sand curtain is placed on the outer surface of the entire lens, which not only eliminates the problem of the lens converging the sun spot, but also solves the problem of light spot convergence of other components inside the transmission-type headlamp.

Description

Technical Field

[0001] The invention relates to the field of automobile lighting devices, and in particular to a rotatable sand screen lens device which can be used to block sunlight. Background Art

[0002] With the rapid development of automobile lighting technology, in addition to the need to design lights that strictly meet regulatory requirements, headlights, in particular, need to fully consider the influence of external factors, such as the influence of sunlight. Transmissive headlights usually include an outer lens and an inner reflector. Sunlight shines on these two components at a certain angle for a long time, which easily forms a concentrated light spot.

[0003] Such a concentrated light spot is undoubtedly harmful to the lighting device, and poses a great challenge to the temperature inside the lighting device, the high temperature resistance of the material, and the service life. It may even burn some parts due to excessive temperature and cause them to fail. Reflective headlights are also subject to the damage caused by the concentration of sunlight.

[0004] Traditional solutions include replacing materials with more heat-resistant materials, or aluminum plating on parts that are prone to forming concentrated light spots to reflect light to other places, or changing the design to avoid the impact of sunlight. All three methods have limitations, inevitably increase costs, and cannot completely eliminate the impact of solar spots, and will also generate new stray light.

[0005] Therefore, it is very important to solve the above problems. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a rotatable sand curtain lens device, which can effectively solve the problem of solar spot convergence of automobiles. The sand curtain is placed on the outer surface of the entire lens, which not only eliminates the problem of lens convergence of solar spots, but also solves the problem of light spot convergence of other components inside the transmissive headlights. Moreover, there is no need to change the material of any component inside the transmissive headlight, no need to add additional components to occupy space, and sand is a very cheap raw material, which solves the problems arising in the background technology.

[0007] The object of the present invention is to provide a rotatable sand curtain lens device, comprising a main body, wherein the main body comprises a lens, an air gap, a decorative ring, shading sand and a device for rotation; the lens is a combined convex lens, comprising a convex lens front surface, a convex lens middle surface and a convex lens rear surface, and the air gap is between the convex lens middle surface and the convex lens rear surface; the decorative ring is a wedge-shaped decorative ring, which is used to store the shading sand, and the decorative ring is communicated with the air gap; a rotating device is located on both sides of the lens to drive the rotation; when the vehicle is in a driving state, the decorative ring of the main body is placed at the bottom; when the vehicle engine is turned off, the main body rotates 180 degrees up and down driven by the rotating device, the decorative ring of the main body is in the upper position, and the entire body is in an inverted position.

[0008] A further improvement is that the width of the air gap is 0.5-1 mm, and the average diameter of the shading sand is 0.4-0.7 mm.

[0009] A further improvement is that when the decorative ring of the main body is in an upper position, the light-shielding sand flows out of the wedge-shaped decorative ring due to gravity, filling the entire air gap, thereby forming a light-shielding sand curtain.

[0010] A further improvement is that when the vehicle starts, the body rotates up and down again driven by the rotating device, and the decorative ring of the body returns from the upper position to the lower position. Due to the effect of gravity, the shading sand flows back to the wedge-shaped decorative ring from the air gap; the body is a transparent and clean convex lens, which can be used as a lens when the vehicle is driving.

[0011] Beneficial effects of the present invention: The rotatable sand screen lens of the present invention can be used as a projection lens of an ordinary transmission headlight when the car is driving normally. When the car engine stops, the sand screen lens becomes a sand screen under the dual effects of the rotating device and gravity to shield the sunlight. One part realizes two functions at the same time. The problem of sun spot convergence of the car can be solved well. The sand screen is placed on the outer surface of the entire lens, which not only eliminates the problem of lens convergence of sun spot, but also solves the problem of other components inside the transmission headlight converging light spot. Moreover, there is no need to change the material of any component inside the transmission headlight, and there is no need to add additional components to occupy space. Sand is a very cheap raw material. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view of the main body of the present invention.

[0013] Figure 2 It is a front view of the main body of the present invention.

[0014] Figure 3 It is an inverted diagram of the present invention rotated 180 degrees up and down.

[0015] Figure 4 yes Figure 3 A partial enlargement of the air gap.

[0016] Wherein: 1-body, 2-convex lens, 2a-front surface of convex lens, 2b-middle surface of convex lens, 2c-rear surface of convex lens, 3-air gap, 4-wedge-shaped decorative ring, 5-sand, 6-rotating device. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0018] Figure 1 , 2 They are respectively a side view and a front view of this embodiment, Figure 3 for Figure 1 The present invention is rotated 180 degrees up and down. Figure 4 yes Figure 3 A partial enlarged view of the air gap shows that the shading sand 5 fills the entire air gap 3.

[0019] like Figure 1-4 As shown, this embodiment provides a rotatable sand curtain lens, including a lens 2, an air gap 3, a decorative ring 4, a light-shielding sand 5 and a device 6 for rotation; wherein the lens 2 is a combined convex lens, including a convex lens front surface 2a, a convex lens middle surface 2b and a convex lens rear surface 2c, and the air gap 3 is between the convex lens middle surface 2b and the convex lens rear surface 2c; the decorative ring 4 is a wedge-shaped decorative ring, used to store the light-shielding sand 5, wherein the wedge shape is conducive to the outflow and storage of the sand. The decorative ring 4 is connected to the air gap 3; the rotating device 6 is located on both sides of the lens 2 to drive the rotation. Usually, the rear surface 2c of the combined convex lens 2 is a wall with a thickness of 2mm. The width of the air gap 3 is generally about 0.7mm, and the height is consistent with the height of the convex lens 2; the average diameter of the light-shielding sand 5 is generally about 0.5mm, and the snowflake white sand commonly used in sand painting can be selected, which has a clear granular feel and a heavier mass specific gravity, which is more conducive to flow and not easy to adhere to the inner wall of the lens.

[0020] When the vehicle is in a driving state, the decorative ring 4 of the present invention is placed at the bottom, and the light-shielding sand 5 is temporarily stored in the decorative ring 4; when the vehicle engine is turned off, the present invention rotates 180 degrees up and down under the drive of the rotating device 6, and the decorative ring 4 rotates from the lower position to the upper position, and the entire rotatable sand curtain lens is in an inverted position. Due to the effect of gravity, the light-shielding sand 5 flows out from the wedge-shaped decorative ring 4 and fills the entire air gap 3, thereby forming a light-shielding sand curtain. At this time, due to the 180-degree rotation up and down, the positions of the front and rear surfaces of the convex lens 2 are changed, and the entire inner surface 2c of the convex lens is moved to the outside. Since the sand fills the entire air gap 3, the entire convex lens 2 is in a white and opaque state at this time, which eliminates the convergence of sunlight from the source. On the one hand, the front surface 2a of the convex lens is on the inner side of the air gap 3, eliminating the risk of sun spots that may be generated in the first layer. On the other hand, the convex lens 2, as a projection lens of a transmission headlight, can also prevent the convergence of sunlight by other components in the transmission headlight.

[0021] When the vehicle starts, the embodiment rotates up and down 180 degrees again driven by the rotating device 6, and the decorative ring 4 returns to the lower position from the upper position. Due to the effect of gravity, the light-shielding sand 5 flows from the air gap 3 back to the wedge-shaped decorative ring 4, and the rotatable sand screen lens becomes a transparent and clean convex lens, which can be used as a lens for the vehicle when it is driving. At the same time, the rotatable sand screen lens in this state has an extra layer of air gap compared to the ordinary convex lens, which will not change the emission direction of the light. Therefore, when the present invention is designed as a transmission headlight, it only needs to consider the existence of the middle air gap, and there is no need to change the original light path design inside.

[0022] The rotating device 6 needs a connecting rod to connect to the motor gear. When the car switches from the closed state to the started state, the body end needs to give the motor a start signal, and the motor rotates to drive the rotating device 6 to rotate, so that the present invention rotates 180 degrees up and down. When the car switches from the driving state to the closed state, the body also gives the motor a start signal, and the motor drives the rotating device 6 to rotate back, so that the present invention 1 rotates 180 degrees up and down.

[0023] This embodiment can well solve the problem of solar spot convergence on cars. The sand curtain is placed on the outer surface of the entire lens, which not only eliminates the problem of lens converging solar spots, but also solves the problem of light spot convergence by other components inside the transmissive headlights. Moreover, there is no need to change the material of any component inside the transmissive headlights, no need to add additional components to occupy space, and sand is a very cheap raw material.

Claims

1. A rotatable sand screen lens device, characterized in that: The invention comprises a body (1), wherein the body (1) comprises a lens (2), an air gap (3), a decorative ring (4), shading sand (5) and a device (6) for rotation; the lens (2) is a combined convex lens, comprising a convex lens front surface (2a), a convex lens middle surface (2b) and a convex lens rear surface (2c), and the air gap (3) is located between the convex lens middle surface (2b) and the convex lens rear surface (2c); the decorative ring (4) is a wedge-shaped decorative ring, which is used to store the shading sand (5), and the decorative ring (4) is connected to the air gap (3); the rotating device (6) is located on both sides of the lens (2) to drive the rotation; when the vehicle is in a driving state, the decorative ring (4) of the body (1) is placed at the bottom; when the vehicle engine is turned off, the body (1) is driven by the rotating device (6) to rotate 180 degrees up and down, the decorative ring (4) of the body (1) is at the upper position, and the entire body (1) is in an inverted position; The thickness of the rear surface (2c) of the convex lens includes a wall surface of 2 mm; The height of the air gap (3) is consistent with the height of the lens (2); The width of the air gap (3) is 0.5-1 mm, and the average diameter of the light-shielding sand (5) is 0.4-0.7 mm.

2. The rotatable sand screen lens device according to claim 1, characterized in that: When the decorative ring (4) of the main body (1) is in an upper position, the light-shielding sand (5) flows out from the wedge-shaped decorative ring (4) due to gravity, filling the entire air gap (3), thereby forming a light-shielding sand curtain.

3. The rotatable sand screen lens device according to claim 1 or 2, characterized in that: When the vehicle starts, the body (1) is driven by the rotating device (6) to rotate up and down again by 180 degrees, and the decorative ring (4) of the body (1) returns from the upper position to the lower position. Due to the effect of gravity, the shading sand (5) flows back to the wedge-shaped decorative ring (4) from the air gap (3); the body (1) is a transparent and clean convex lens, which can be used as a lens when the vehicle is driving.

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