CN212204410U - TIR lens with shading cylinder, shading assembly and lamp - Google Patents

Abstract

The utility model discloses a TIR lens, shading subassembly and lamps and lanterns with shading section of thick bamboo, TIR lens with shading section of thick bamboo includes the rotator, be equipped with incident area and emergent area on the rotator, the outside wall that is located between emergent area and the incident area forms the total reflection surface, the incident area is equipped with the incident cavity that is used for placing the light source, the middle part in emergent area is equipped with central refraction area, be equipped with shading section of thick bamboo in the periphery in central refraction area, shading section of thick bamboo is light tight structure; the shading assembly comprises a shading cylinder, a mounting frame and a plurality of supports, wherein the mounting frame is positioned on the periphery of the shading cylinder, the supports are connected with the shading cylinder and the mounting frame, and the shading cylinder is of a light-tight structure; the lamp comprises a lampshade, and the end part of the lampshade is connected with the shading component.

Description

TIR lens with shading cylinder, shading assembly and lamp

Technical Field

The utility model relates to the field of lighting technology, especially a TIR lens, shading subassembly and lamps and lanterns with shading section of thick bamboo.

Background

In a conventional tir (total internal reflection) lens, as shown in fig. 1, light emitted from a light source 100 is divided into two parts by an incident cavity 11, a first part of light ray a101 enters a total reflection surface through a sidewall 111 of the incident cavity and exits the lens, and a second part of light ray 103 enters a central refraction region 13 through a top wall 112 of the incident cavity 11 and exits the lens.

However, since the refractive index of the lens material is greater than that of air, the first part of the light ray B102 will undergo interfacial reflection at the sidewall 11 of the incident cavity 11, the part of the light ray will be totally reflected to the central refraction region 13 and finally refracted out of the lens, and the exit angle of the part of the light ray is large, so that a bright spot condition outside the central region of the light spot occurs, and the illumination effect is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems that the bright spots appear outside the central area of the light spot of the existing TIR lens in the prior art and the lighting effect is influenced, the TIR lens, the shading component and the lamp with the shading cylinder are provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a TIR lens with anti-dazzling screen, includes the rotator, be equipped with incident area and emergent area on the rotator, be located the outside wall between emergent area and the incident area forms the total reflection face, the incident area is equipped with the incident cavity that is used for placing the light source, the middle part in emergent area is equipped with central refraction region the regional periphery of central refraction is equipped with anti-dazzling screen, anti-dazzling screen is light tight structure.

The utility model discloses a periphery at central refraction region sets up a shading section of thick bamboo, shelters from the absorption through a shading section of thick bamboo to interface reflection's wide-angle light to can reduce the bright spot condition outside the facula central area, improve illuminating effect. The shading cylinder has simple structure, easy operation, lower cost and obvious effect.

As a preferred embodiment of the present invention, the cross-sectional shape of the shading cylinder is adapted to the central refraction area. The sectional area of the shading cylinder is slightly larger or smaller than the central refraction area, and the shading effect can be realized, but when the sectional shape of the shading cylinder is completely consistent with the central refraction area, the shading effect is better.

As the utility model discloses a preferred scheme, the exit area is equipped with the exit hole, the exit hole constitutes the central refraction is regional, the shading section of thick bamboo with the lateral wall of exit hole is laminated mutually.

As the preferred proposal of the utility model, the shading cylinder is a cylinder structure.

As the utility model discloses an optimal scheme, it is outstanding to prevent light section of thick bamboo highly be greater than or equal to 2mm in the outgoing region, can realize better effect of preventing light this moment.

As the preferred scheme of the utility model, the shading section of thick bamboo pastes on the central refraction is regional, easy operation, the implementation of being convenient for.

The utility model also discloses a shading subassembly, including the shading section of thick bamboo, be located the mounting bracket of shading section of thick bamboo periphery, and connect a plurality of shading section of thick bamboo and mounting bracket supports, the shading section of thick bamboo is light tight structure.

The utility model discloses specially designed a shading subassembly, this shading subassembly can not only shelter from interface reflection's wide-angle light, and this shading subassembly can the direct mount on lamps and lanterns or lens, through the size that changes a shading section of thick bamboo and mounting bracket, but the flexibility of shading subassembly has been improved greatly to lamps and lanterns or lens of any size of adaptation.

As the preferred scheme of the utility model, the shading cylinder with the mounting bracket is the drum structure.

The utility model also discloses a lamps and lanterns, including the lamp shade the end connection of lamp shade has a shading subassembly.

The utility model discloses directly set up the shading subassembly on lamps and lanterns, shelter from the wide-angle light of interface reflection through the shading subassembly. The lamp provided with the shading assembly can be directly matched with any lens, so that the lighting effect is improved.

As the preferred scheme of the utility model, the shading subassembly with the detachable connection of lamp shade.

To sum up, owing to adopted above-mentioned technical scheme, TIR lens with shading section of thick bamboo beneficial effect be:

the utility model discloses a periphery at central refraction region sets up a shading section of thick bamboo, shelters from the absorption through a shading section of thick bamboo to interface reflection's wide-angle light to can reduce the bright spot condition outside the facula central area, improve illuminating effect. The shading cylinder has simple structure, easy operation, lower cost and obvious effect.

Shading subassembly's beneficial effect be:

shading subassembly can not only shelter from the wide-angle light of interface reflection, and this shading subassembly can the direct mount on lamps and lanterns or lens, through the size that changes a shading section of thick bamboo and mounting bracket, but the flexibility of shading subassembly has been improved greatly to the lamps and lanterns or lens of any size of adaptation.

The beneficial effects of lamps and lanterns be:

the utility model discloses directly set up the shading subassembly on lamps and lanterns, shelter from the wide-angle light of interface reflection through the shading subassembly. The lamp provided with the shading assembly can be directly matched with any lens, so that the lighting effect is improved.

Drawings

Fig. 1 is an optical path diagram of a conventional TIR lens.

Fig. 2 is a schematic structural diagram of a TIR lens provided with a light shielding cylinder according to the present invention.

Fig. 3 is an exploded pictorial illustration of this fig. 2.

Fig. 4 is an optical path diagram of a TIR lens with a light shielding cylinder according to the present invention.

Fig. 5 is a schematic structural diagram of a TIR lens provided with a light-shielding cylinder according to embodiment 2 of the present invention.

Fig. 6 is a front view of a TIR lens provided with a light shielding cylinder according to embodiment 2 of the present invention.

Fig. 7 is a left side view of a TIR lens provided with a light shielding cylinder according to embodiment 2 of the present invention.

Fig. 8 is a right side view of a TIR lens provided with a light shielding cylinder according to embodiment 2 of the present invention.

Fig. 9 is a cross-sectional view of a TIR lens provided with a light shielding cylinder according to embodiment 2 of the present invention.

Fig. 10 is a schematic structural diagram of a light shielding assembly according to the present invention.

Fig. 11 is a schematic structural diagram of a lamp according to the present invention.

Fig. 12 is a front view of a lamp according to the present invention.

Fig. 13 is a cross-sectional view of a lamp according to the present invention.

Reference numerals: 11-incident cavity, 111-side wall, 112-top wall, 12-total reflection surface, 13-central refraction area; 14-an exit aperture; 100-a light source; 101-a first portion of light rays a; 102-first portion of light ray B; 103-a second portion of light; 1-a rotator; 2-shading cylinder; 3-mounting a frame; 31-supporting; 4-lampshade.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 2-3, a TIR lens with a light shielding cylinder includes a rotating body 1, where an incident area and an exit area are provided on the rotating body, a total reflection surface 12 is formed on an outer side wall surface between the exit area and the incident area, the incident area is provided with an incident cavity 11 for placing a light source, the exit area is provided with an exit hole 14, the exit hole 14 forms a central refraction area 13, a cylindrical light shielding cylinder 2 is provided on an outer periphery of the exit hole 14, and the light shielding cylinder 2 is attached to a side wall of the exit hole 14. The light shielding cylinder 2 is of a light-tight structure, and the light shielding cylinder 2 protrudes out of the emergent hole 14 by more than or equal to 2 mm. In the present embodiment, the light shielding cylinder 2 is directly attached to the exit hole 14.

As shown in fig. 4, the top wall 112 of the incident cavity 11 constitutes a first incident surface, and the side wall 111 of the incident cavity 11 constitutes a second incident surface. The second part of light 103 emitted by the light source 100 enters the central refraction area 13 through the first incident surface and is emitted, the first part of light a101 enters the total reflection surface 12 through the second incident surface and is reflected and emitted, and the two parts of light form an ideal illumination spot.

However, the first partial light ray B102 may be reflected at the second incident surface and may be emitted from the central refraction region 13 at a large angle. The utility model discloses having add the better above-mentioned problem of having solved of a shading section of thick bamboo 2, a shading section of thick bamboo 2 is located the regional 13 periphery of central refraction, can not shelter from first part light A101 and second part light 103 on the one hand, can guarantee the normal ejection of second part light 103, and on the other hand can shelter from and absorb the wide-angle first part light B102 to reduce the ejection of wide-angle light, improve illuminating effect.

Example 2

This embodiment is an improvement of the light shielding tube 2 based on embodiment 1. As shown in fig. 5 to 9, the mounting frame 3 and the plurality of supports 31 are added, the light shielding cylinder 2 is integrally connected to the mounting frame 3, the mounting frame 3 is clamped at one end of the rotator 1, so that the light shielding cylinder 2 is fixed, and the relative position of the light shielding cylinder 2 and the rotator 1 is more firmly fixed compared with the adhering mode of the embodiment 1.

As shown in fig. 10, a shade assembly includes a shade cylinder 2 according to embodiment 1, a mounting bracket 3 located at an outer periphery of the shade cylinder 2, and a plurality of supports 31 connecting the shade cylinder 2 and the mounting bracket 3. The mounting rack 3 is of a cylindrical structure, and the support 31 is fixedly connected with the shading cylinder 2 and the mounting rack 3 respectively.

Example 3

As shown in fig. 11 to 13, a lamp includes a lamp housing 4, a light shielding assembly as described in embodiment 2 is connected to an end of the lamp housing 4, and the light shielding assembly is detachably connected to the lamp housing 4, such as by screwing.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The TIR lens with the light shielding cylinder comprises a rotating body (1), wherein an incident area and an emergent area are arranged on the rotating body (1), a total reflection surface (12) is formed on the outer side wall surface between the emergent area and the incident area, the incident area is provided with an incident cavity (11) for placing a light source, the TIR lens is characterized in that a central refraction area (13) is arranged in the middle of the emergent area, the periphery of the central refraction area (13) is provided with the light shielding cylinder (2), and the light shielding cylinder (2) is of a light-tight structure.

2. TIR lens provided with a light-shielding cylinder according to claim 1, characterized in that the cross-sectional shape of the light-shielding cylinder (2) is adapted to the central refractive area (13).

3. The TIR lens with a light shielding cylinder according to claim 1, wherein the exit area is provided with an exit aperture (14), the exit aperture (14) constituting the central refractive area (13), the light shielding cylinder (2) being attached to the side wall of the exit aperture (14).

4. A TIR lens with a light shield according to any of claims 1 to 3, wherein said light shield (2) is of a cylindrical construction.

5. The TIR lens provided with a light-shielding cylinder according to claim 4, wherein the height of the light-shielding cylinder (2) protruding the exit area is greater than or equal to 2 mm.

6. A TIR lens with a light shield according to any of claims 1 to 3, wherein said light shield (2) is glued to said central refractive area (13).

7. The shading assembly is characterized by comprising a shading cylinder (2), a mounting rack (3) located at the periphery of the shading cylinder (2), and a plurality of supports (31) connected with the shading cylinder (2) and the mounting rack (3), wherein the shading cylinder (2) is of a light-tight structure.

8. A shading assembly according to claim 7, wherein the shading cylinder (2) and the mounting frame (3) are of cylindrical construction.

9. A luminaire comprising a housing (4), a shading assembly as claimed in claim 7 or 8 being attached to an end of said housing (4).

10. A light fixture as claimed in claim 9, characterized in that said shading assembly is detachably connected to said housing (4).

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