CN113864698A

CN113864698A - Top lighting lamp

Info

Publication number: CN113864698A
Application number: CN202111217987.9A
Authority: CN
Inventors: 何祖平; 刘小云; 徐凯
Original assignee: Ningbo Self Electronics Co Ltd
Current assignee: Ningbo Self Electronics Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2021-12-31

Abstract

The invention discloses a top lighting lamp, which comprises a strip-shaped lamp bracket and a strip-shaped circuit board arranged on the strip-shaped lamp bracket, wherein the strip-shaped circuit board is provided with light-emitting chips which are continuously arranged at intervals along the length direction, and the top lighting lamp also comprises: the light-emitting chip comprises a plurality of light-gathering units and a plurality of light-splitting units, wherein the light-gathering units and the light-splitting units are arranged at intervals along the length direction and are positioned in the light-emitting direction of the light-emitting chip, and the light-splitting units guide at least part of light emitted by the light-emitting chip to two sides; the two light reflecting plates are arranged on two sides of the light emitting direction of the light emitting chip and are obliquely arranged outwards and used for reflecting the light beams from the light splitting unit; the top lighting lamp is provided with the light distribution system which comprises two parts, the light condensing unit distributes light emitted by the light source to form small-angle lighting, and the light splitting unit distributes the light to the reflector to realize uniform and soft lighting.

Description

Top lighting lamp

Technical Field

The invention relates to the technical field of illumination, in particular to a top illumination lamp.

Background

Under the background of energy conservation and environmental protection, the LED lamp is increasingly applied to the fields of household and commercial illumination because of high light emitting efficiency and good light condensing performance. However, because the LED lamp has high lighting efficiency, a small light emitting angle, and high optical power density per unit area, glare of the LED lamp is more glaring and glaring than that of a conventional lamp, and thus the LED lamp needs to be subjected to anti-glare treatment.

The light distribution technology of the bracket lamps is adopted in the supermarket cashier desk lamp, the light emitting area of the lamp is large, the dazzling feeling of the LED lamp can be reduced, and people still feel uncomfortable when the people directly look at the lamp for a long time. The light distribution of the milky white lampshade is lambertian, the light emitting angle is large, the illumination range of the lamp is large, the illumination of the lamp on the cashier desk is not high, and the operation of the cashier area is not facilitated.

Disclosure of Invention

In view of the above, the present invention provides a top lighting fixture to solve the above technical problems.

The utility model provides a top illumination lamps and lanterns, includes bar lighting fixture and the bar circuit board of setting on the bar lighting fixture, be equipped with the luminous chip along the continuous interval arrangement of length direction on the bar circuit board, top illumination lamps and lanterns still include:

the light-emitting chip comprises a plurality of light-gathering units and a plurality of light-splitting units, wherein the light-gathering units and the light-splitting units are arranged at intervals along the length direction and are positioned in the light-emitting direction of the light-emitting chip, and the light-splitting units guide at least part of light emitted by the light-emitting chip to two sides;

and the two reflectors are arranged on two sides of the light emitting direction of the light emitting chip and are obliquely arranged outwards, and are used for reflecting light beams from the light splitting unit.

Preferably, the light condensing unit includes at least one condensing lens.

Preferably, the condenser lens includes:

the first light inlet surface is arranged close to the light emitting chip;

the first light emitting surface is arranged outside the first light inlet surface along the light emitting direction;

and the first total reflection surface is annularly arranged and connected with the outer edges of the first light inlet surface and the first light outlet surface.

Preferably, the top lighting fixture further comprises a light shield positioned outside the condenser lens.

Preferably, the first light entering surface is provided with a counter bore, and the top surface of the counter bore is a light gathering surface.

Preferably, the first total reflection surface (which is a revolution surface that totally reflects light in a cross manner.

Preferably, the light splitting unit includes at least one light splitting lens.

Preferably, the spectral lens includes:

the second light inlet surface is arranged close to the light emitting chip;

the two second total reflection surfaces are positioned on the outer side of the second light inlet surface and are arranged in an outward inclined mode along the light outlet direction of the light emitting chip;

and the two second light-emitting surfaces are arranged on two sides and are connected with the second total reflection surface and the second light inlet surface.

Preferably, the second total reflection surface is an arc surface.

Preferably, the reflecting surface of the reflecting plate is a diffuse reflecting surface.

The invention has the technical effects that:

the top lighting lamp is provided with two parts, the light distribution system is provided with two parts, the light condensing unit distributes light emitted by the light source to form small-angle lighting, the light splitting unit distributes the light to the reflector to realize flood lighting, the small-angle light distribution of the light condensing unit also adopts a cross light technology to realize efficient anti-glare key lighting by combining a light shield, and in the flood lighting, the light is distributed to large diffuse reflection light emitting surfaces on two sides through the lens to realize uniform and soft lighting.

Drawings

Embodiments of the invention are described below with reference to the accompanying drawings, in which:

fig. 1 is an exploded view of the top lighting fixture of the present embodiment.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a schematic cross-sectional view of a portion of a top illumination fixture of the present embodiment.

Fig. 4 is a schematic sectional view of the condenser lens of the present embodiment.

Fig. 5 is a schematic optical path diagram of the condenser lens of the present embodiment.

Fig. 6 is a cross-sectional schematic view of the top illumination fixture of the present embodiment.

Fig. 7 is a schematic optical path diagram of the spectroscopic lens of the present embodiment.

Detailed Description

Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to 7, the top lighting lamp of the present embodiment includes a bar-shaped lamp holder 100 and a bar-shaped circuit board 200 disposed on the bar-shaped lamp holder 100, wherein the bar-shaped circuit board 200 is provided with light emitting chips 300 continuously disposed at intervals along a length direction. The above structure is a component carried by a common top lighting fixture, and is not the focus of the present invention, and is not described herein. Necessary parts such as end covers are arranged, which is not the focus of the invention and is not described in detail herein.

The top illumination fixture further includes a plurality of condensing units 400, a plurality of light splitting units 500, and two light reflecting plates 600. The light condensing unit 400 and the light splitting unit 500 are arranged at intervals along the length direction and are located in the light emitting direction of the light emitting chip 300, and the light splitting unit 500 guides at least part of light emitted by the light emitting chip 300 to two sides; the two light-reflecting plates 600 are disposed at two sides of the light-emitting direction of the light-emitting chip 300 and are inclined outward, so as to reflect the light beam from the light-splitting unit 500.

The light emitting chip 300 may adopt various electroluminescent chips, in this embodiment, an LED chip is adopted, and the light condensing unit 400 is used for condensing light emitted by the light emitting chip 300, so as to obtain an illumination area with high brightness directly below the lamp.

In addition, the present invention further provides a light splitting unit 500 spaced apart from the light collecting unit 400, and the light of the light emitting chip 300 is split into two sides, or all or part of the light. And is reflected downward by the reflection plate 600 to obtain a large-angle outgoing light, and works together with the light beam emitted from the light condensing unit 400 at a small angle to obtain a uniform illumination effect with high middle brightness and no obvious reduction in peripheral brightness.

The form of the light condensing unit is many, and mirror reflection, lens focusing, etc. may be adopted, wherein the form of the lens realizing focusing is also many, specifically, in this embodiment, the light condensing unit 400 is a light condensing lens 401, and the light condensing lens 401 includes: a first light entering surface 4011, a first light exiting surface 4012, and a first total reflection surface 4013. The first light inlet surface 4011 is arranged close to the light emitting chip 300; the first light emitting surface 4012 is arranged outside the first light entering surface 4011 along the light emitting direction; the first total reflection surface 4013 is annularly arranged and connected with the outer edges of the first light entering surface 4011 and the first light emitting surface 4012. The light emitting chip 300 enters the lens from the first light entering surface 4011, the light in the middle part directly exits from the first light exiting surface 4012, and the light in the peripheral part exits from the first light exiting surface 4012 after being reflected by the first total reflection surface 4013, so that the light condensing effect is achieved. The first light emitting surface 4012 has a honeycomb pattern to improve uniformity of light emission.

To achieve glare prevention, the top lighting fixture further comprises a light shield 700 located outside the condenser lens 401. The light shield 700 realizes the anti-glare function by deepening the depth of the light-emitting surface. All the light shields 700 of the present embodiment are integrally formed together by a mounting plate, and are connected to the lamp holder by a fixing structure, which is not described herein.

In order to further improve the light efficiency and the light condensation effect, the first light inlet surface 4011 is provided with a counter bore 4014, and the top surface of the counter bore 4014 is a light condensation surface 4015.

In order to obtain uniform light output, in this embodiment, the first total reflection surface 4013 is a revolution surface, and the first total reflection surface 4013 totally reflects light in a cross manner. The cross total reflection means: in any cross section passing through the center line of revolution (the center line of revolution of the surface of revolution), at least part of the light totally reflected by the first totally reflecting surface 4013 intersects the center line of revolution. Meanwhile, the light is controlled not to pass through the inner wall of the light shield 700, and efficient anti-dazzle key illumination is achieved.

In this embodiment, the light splitting unit 500 includes two light splitting lenses 501. Each of the condenser lens 401 and the beam splitter lens 501 described above corresponds to one light emitting chip 300.

The spectral lens 501 includes: a second light entering surface 5011, two second total reflection surfaces 5012 and a second light exiting surface 5013. The second light inlet face 5011 is arranged close to the light emitting chip 300; the two second total reflection surfaces 5012 are located at the outer side of the second light inlet surface 5011, and the two second total reflection surfaces 5012 are obliquely arranged outwards along the light outlet direction of the light emitting chip 300; and two second light emitting surfaces 5013 arranged on two sides and connecting the second total reflection surface 5012 and the second light entering surface 5011.

The second total reflection surface 5012 may be a plane or a curved surface, in order to make the light distribution more uniform, in this embodiment, the second total reflection surface 5012 is an arc surface, and specifically, the second total reflection surface 5012 in this embodiment is an outer surface of a half cone.

In order to obtain a comfortable lighting effect, the reflective surface of the light reflection plate 600 is a diffuse reflective surface. The diffuse reflection surface has good reflection performance and does not generate dazzling strong light.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. The utility model provides a top lighting lamp, includes bar lighting fixture (100) and bar circuit board (200) of setting on bar lighting fixture (100), be equipped with on bar circuit board (200) along the luminous chip (300) of the continuous interval arrangement of length direction, its characterized in that, top lighting lamp still includes:

the light-emitting device comprises a plurality of light-gathering units (400) and a plurality of light-splitting units (500), wherein the light-gathering units (400) and the light-splitting units (500) are arranged at intervals along the length direction and are positioned in the light-emitting direction of the light-emitting chip (300), and the light-splitting units (500) guide at least part of light emitted by the light-emitting chip (300) to two sides;

two reflectors (600) set up the both sides of emitting chip (300) light-emitting direction just outwards slope the setting for the reflection comes from beam splitting unit (500).

2. A top lighting fixture as claimed in claim 1, wherein the light gathering unit (400) comprises at least one light gathering lens (401).

3. A top lighting fixture as recited in claim 2,

the condenser lens (401) includes:

a first light inlet surface (4011) disposed adjacent to the light emitting chip (300);

a first light emitting surface (4012) disposed outside the first light entering surface (4011) along a light emitting direction;

and the first total reflection surface (4013) is annularly arranged and connected with the outer edges of the first light inlet surface (4011) and the first light outlet surface (4012).

4. A top lighting fixture as claimed in claim 3, further comprising a light shield (700) located outside the condenser lens (401).

5. A top lighting fixture as claimed in claim 3, wherein the first light inlet surface (4011) is provided with a counterbore (4014), and a top surface of the counterbore (4014) is a light concentrating surface (4015).

6. A top illumination fixture as claimed in claim 3, wherein the first total reflection surface (4013) is a surface of revolution, the first total reflection surface (4013) totally reflecting light in cross.

7. A top lighting fixture as claimed in claim 1, wherein the light splitting unit (500) comprises at least one light splitting lens (501).

8. A top lighting fixture as claimed in claim 7, wherein the beam splitting lens (501) comprises: a second light entrance surface (5011) disposed adjacent to the light emitting chip (300);

the two second total reflection surfaces (5012) are positioned on the outer side of the second light inlet surface (5011) and are obliquely arranged outwards along the light outlet direction of the light emitting chip (300);

and the two second light emitting surfaces (5013) are arranged on two sides and are connected with the second total reflection surface (5012) and the second light inlet surface (5011).

9. A top lighting fixture as defined in claim 8, wherein said second fully reflective surface (5012) is an arcuate surface.

10. A top illumination fixture as claimed in any one of claims 1 to 9, wherein the reflector (600) is a diffuse reflector.