CN222316754U - Light emitting part, light emitting structure and lamp - Google Patents

Abstract

The utility model relates to the technical field of illumination, and discloses a light emitting piece which is a rotationally symmetrical body and comprises a first end part, a first light reflecting part, a second end part, a second light reflecting part and a third end part, wherein a light emitting opening is formed in the first end part, the first light reflecting part is formed by extending upwards in an arc shape in the direction away from the light emitting opening, a light reflecting surface is arranged in the first light reflecting part, the second end part is the top end of the light emitting piece, the second light reflecting part is formed by extending downwards in an inclined manner in the direction close to the light emitting opening, the second light reflecting part is provided with a light reflecting surface, the third end part is arranged at the other end of the second light reflecting part, and the first end part, the first light reflecting part, the second end part, the second light reflecting part and the third end part jointly encircle to form a light emitting cavity. After the light entering the light-emitting cavity is respectively subjected to collimation and reflection of the first reflecting part and deflection and reflection treatment of the second reflecting part, the light exits from the light-emitting opening, so that the direct irradiation of the light is avoided, the glare condition is effectively controlled, and the light-emitting effect is good. The utility model further provides a light emitting structure comprising the light emitting piece and a lamp.

Description

Light emitting part, light emitting structure and lamp

Technical Field

The utility model belongs to the field of illumination, and particularly relates to a light emitting part, a light emitting structure and a lamp.

Background

In lamps for providing basic illumination, particularly low-and medium-power spot lamps and ceiling lamps, the light emitting effect is good, and the requirements of illumination such as regional illumination, atmosphere illumination and decorative illumination can be met, so that the light emitting device is widely applied to illumination areas such as living rooms, shops, hotels and offices.

The conventional light source adopted by the prior spotlight is a COB light source. The light distribution mode of the COB light source is simple, the light emitting effect is excellent, but the cost of the COB light source is relatively high due to the adoption of a COB packaging technology, and the heat is too concentrated and needs to be additionally provided with a heat dissipation structure such as a heat dissipation part, so that the spot lamp adopting the COB light source does not occupy the price advantage on the whole lamp.

In the spotlight adopting the SMD patch light source, the light distribution mode of the light source is complex due to the relatively fixed specification and quantity of the SMD patches, and in addition, the light source module adopting the SMD patch technology is usually realized by adopting a plurality of light-emitting elements. In order to meet the light emitting effect, the common light distribution scheme comprises (1) that one light emitting element corresponds to one lens and (2) that of a centralized light distribution mode. The light distribution scheme (1) has a simple structure, but when a plurality of light emitting elements are needed, a plurality of lenses are needed to be correspondingly arranged, the transmission mode of a single light emitting element is complex, the light emitting effect is inconvenient to control, the plurality of light emitting elements are needed to be concentrated at one place in the light distribution scheme (2), the heat collection problem is caused, the heat dissipation cost of the lamp is certainly increased, and in addition, the problem that the angle is difficult to make is caused because the light source of the light distribution scheme (2) is too concentrated.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a light-emitting piece, wherein a light-emitting cavity is formed by a first end part, a first light-reflecting part, a second end part, a second light-reflecting part and a third end part, light entering the light-emitting cavity is processed by the first light-reflecting part and the second light-reflecting part and then emitted from a light-emitting opening formed by surrounding the first end part, so that the direct irradiation of the light is avoided, the glare condition is effectively controlled, and the light-emitting effect is good. The utility model further provides a light emitting structure comprising the light emitting piece and a lamp.

The technical effects to be achieved by the utility model are realized by the following technical aspects:

In a first aspect, the present utility model provides a light emitting element, where the light emitting element is a rotationally symmetrical body, and includes a first end, a first light reflecting portion, a second end, a second light reflecting portion, and a third end.

The first end part is provided with a light outlet.

The first light reflecting portion is formed by the first end portion extending upwards in an arc shape in the direction away from the light outlet, and a light reflecting surface is arranged on the first light reflecting portion.

The second end part is the top end of the light emitting piece.

The second light reflecting part is formed by extending the second end part obliquely downwards towards the direction close to the light outlet, and the second light reflecting part is provided with a light polarization surface.

The third end part is arranged at the other end of the second light reflecting part;

The first end part, the first light reflecting part, the second end part, the second light reflecting part and the third end part jointly surround to form a light emitting cavity.

In some embodiments, the third end portion is formed by the second light reflecting portion extending obliquely downward toward the light outlet and converging at a point.

In a further embodiment, the light extraction member has a central axis Z, and the third end is located on the central axis Z.

In still a further embodiment, the light outlet has a light outlet surface, and the third end portion does not protrude from the light outlet surface.

In a further embodiment, in any cross section passing through the central axis Z, the light reflecting surface is a light reflecting curve, the light reflecting curve is curved towards the light outlet, and a generatrix of the light reflecting curve is a part of a parabola.

In the above embodiment, more specifically, the reflecting surface is an electroplated aluminum mirror surface, or a scale microstructure for mixing light is disposed on the reflecting surface.

In still further embodiments, in any cross section passing through the central axis Z, the polarization plane is a polarization line, and an angle θ is formed between the polarization line and the central axis Z.

In a second aspect, the present utility model further provides a light emitting structure, including a light source module, and a light emitting member described in any of the foregoing embodiments;

The light source module comprises a substrate with an annular structure and a light-emitting assembly attached to the substrate, wherein the light-emitting assembly is provided with a light-emitting surface, the light-emitting opening is provided with a light-emitting surface, and the light-emitting surface is overlapped with the light-emitting surface or is positioned above the light-emitting surface.

In some embodiments, the light emitting assembly is composed of a plurality of light emitting elements of the same color temperature, or a plurality of light emitting elements of different color temperatures;

a light emitting element having a light emitting center thereon;

the light emitting piece is provided with a central axis Z, the light reflecting surface is a light reflecting curve in any section passing through the central axis Z, a generatrix of the light reflecting curve is a part of a parabola, and the light emitting center is positioned on a focus of the parabola.

In a third aspect, the utility model further provides a lamp, which comprises a shell and the light emitting structure, wherein the shell and the light emitting piece are integrally injection molded.

In summary, the present invention has at least the following advantages:

1. The light-emitting piece provided by the utility model adopts the first end part, the first light-reflecting part, the second end part, the second light-reflecting part and the third end part to form the light-emitting cavity, and the light entering the light-emitting cavity is emitted from the light-emitting opening formed by surrounding the first end part after being respectively subjected to collimation reflection of the first light-reflecting part and deflection reflection treatment of the second light-reflecting part, so that the direct irradiation of the light is avoided, the glare condition is effectively controlled, the structure is simple, and the light-emitting effect is good.

2. The light-emitting structure provided by the utility model can carry out secondary reflection type light control treatment on the light source module by adopting one light-emitting part, and can effectively and flexibly control the light-emitting angle.

3. The lamp provided by the utility model can enable the shell and the light emitting piece to be of an integrated structure, saves assembly procedures and reduces production cost.

Drawings

Fig. 1 is a schematic cross-sectional view of a light emitting device according to embodiment 1 of the present utility model.

Fig. 2 is a schematic cross-sectional view of the partial structure of fig. 1 taken along the A-A plane.

Fig. 3 is a schematic cross-sectional view of a first light reflecting portion in embodiment 1 of the present utility model.

Fig. 4 is a schematic view of a light path of the light emitting device in embodiment 1 of the present utility model.

Fig. 5 is a schematic cross-sectional view of the light emitting structure of embodiment 2 of the present utility model.

FIG. 6 is a schematic cross-sectional view of the unitary structure of FIG. 5 taken along the B-B plane.

Fig. 7 is a schematic view of the light path when θ is 45 ° in embodiment 2 of the present utility model.

Fig. 8 is a schematic cross-sectional view of a lamp according to embodiment 3 of the present utility model.

FIG. 9 is a schematic cross-sectional view of the unitary structure of FIG. 8 taken along the C-C plane.

The marks in the figure:

100-light emitting parts, 200-light emitting structures and 300-lamps;

1-a first end part, 101-a light emergent cavity, a Z-center axis;

11-light outlet, 111-light outlet surface, 12-light inlet;

2-a first light reflecting portion, 21-a light reflecting surface;

3-a second end;

4-a second light reflecting portion, 41-a polarized light surface;

5-a third end;

6-light source component, 61-substrate, 62-light-emitting component, 620-light-emitting element, 621-light-emitting center, 622-light-emitting surface;

7-a housing;

Detailed Description

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1

Referring to fig. 1-4, the present utility model provides a light emitting device 100 for performing reflective light distribution processing on light emitted by a light source module, where the light emitting device 100 includes a first end 1, a first light reflecting portion 2, a second end 3, a second light reflecting portion 4, and a third end 5, and the first end 1, the first light reflecting portion 2, the second end 3, the second light reflecting portion 4, and the third end 5 surround a light emitting cavity 101. The light emitting part 100 can be made of resin plastic material through injection molding process, such as PC (polycarbonate) or ABS (ternary copolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S)) integrated injection molding. As shown in fig. 1, the light emitting element 100 is a rotationally symmetrical body formed by rotating around a central axis Z.

In the light emitting device 100, the first end 1 is located at an outer edge of the light emitting device 100 and has a ring-shaped structure, and the first end 1 surrounds the light emitting opening 11. In the present embodiment, the light outlet 11 of the light outlet member 100 is also the light inlet 12, and the size of the light outlet 11 is larger than the size of the light inlet 12. It can be understood that the light inlet 12 is included in the light outlet 11, and the light enters the light outlet cavity 101 from the light inlet, and exits from the light outlet 11 after being subjected to the reflective light control treatment of the light outlet 100. The light-emitting cavity 101 communicates with an area to be illuminated from the outside through the light-emitting opening 11.

The first light reflecting portion 2 is formed by extending the first end portion 1 upward in an arc shape in a direction away from the light outlet 11. In the first light reflecting portion 2, an inner surface facing the light outlet 11 is a light reflecting surface 21.

The second end 3 is disposed at the top end of the light emitting element 100, and then the second end 3 extends obliquely downward toward the light emitting opening 11 to form a second light reflecting portion 4, and a polarizing surface 41 is disposed in the second light reflecting portion 4. The reflecting surface 41 of the second reflecting portion 4 and the reflecting surface 21 of the first reflecting portion 2 both reflect light, except that the reflecting surface 21 collimates and reflects light and the reflecting surface 41 deflects light downward. The two are cooperatively reflected, so that secondary reflection type light distribution can be carried out on the light, and the light is deflected and emitted downwards.

The third end portion 5 is disposed at the other end of the second light reflecting portion 4 away from the second end portion 3, and it is understood that the second end portion 3 and the third end portion 5 are disposed at the upper and lower ends of the second light reflecting portion 4.

In some embodiments, the first end 1 is annularly disposed around the outer edge of the light-emitting member 100, the second end 3 is annularly disposed around the top of the light-emitting member 100, and the third end 5 is formed by the second light-reflecting portion 4 extending obliquely downward toward the light-emitting opening 11 and converging at a point. It is understood that the first end 1 and the second end 3 are both annular ends, the third end 5 is a point-shaped end, and the third end 5 is located on the central axis Z of the light extraction member 100.

In other embodiments, the third end 5 may not be located on the central axis Z when the third end 5 is a point-shaped end, i.e., the third end 5 is offset from the central axis Z.

In other embodiments, the third end portion 5 may be configured as an annular end portion, that is, the second light reflecting portion 4 forms an annular structure with a central opening when extending obliquely downward toward the light outlet 11. The center of the third end 5 of the ring structure may also coincide with or be offset from the central axis Z.

Referring to fig. 2 and 3, in any cross section through the central axis Z, the reflective surface 21 is a reflective curve, the reflective curve is curved toward the light outlet 11, and a generatrix of the reflective curve is a portion of a parabola.

In fig. 3, a rectangular coordinate system (X, Y) is established with the point where the reflection surface 21 intersects the first end portion 1 as an origin O, with an axis passing horizontally through the origin O as an X-axis, and with an axis passing through the origin O and perpendicular to the X-axis as a Y-axis. In the rectangular coordinate system (x, y), the parabolic function of the generatrix of the reflection curve corresponds to y ² =2px (p >0, y. Gtoreq.0).

In some embodiments, the first light reflecting portion 2 may be a PC or ABS, and the light reflecting surface 21 may be an electroplated aluminum mirror surface for directly reflecting light. In some embodiments, a scale microstructure for mixing light may be disposed on the reflective surface 21 to mix incident light to make the light output softer, or mix light with different color temperatures to provide various light output effects.

In the cross section of the light emitting member passing through the central axis Z, the polarization plane 41 is a polarization straight line, and an included angle θ is formed between the polarization straight line and the central axis Z. When the third end portion 5 is a point-shaped end portion and coincides with the central axis Z, the third end portion 5, the second light reflecting portion 4 and the second end portion 3 form a V-shaped structure. In the middle of the overall structure of the light-emitting member 100, a tapered groove is formed. When the third end 5 is an annular end and the center of the annular end coincides with the center axis Z, the third end 5, the second light reflecting portion 4 and the second end 3 form an inverted trapezoidal structure.

In this embodiment, the polarizing straight line forms an angle θ with the central axis Z, and the range is 40-60 °, preferably the angle θ=45°. By adjusting the included angle θ, the outgoing direction of the light after polarized reflection processing by the second light reflecting portion 4 can be adjusted.

In some embodiments, the second reflective portion 4 may be made of PC or ABS, and the portion of the polarizing surface 41 must be an electroplated aluminum mirror. In other embodiments, the second reflecting portion 4 may be made of a highly reflective material with better reflection effect, for example, the surface of the polarizing surface 41 is a specular highly reflective surface, or a PET highly reflective surface is adhered to the polarizing surface 41, and its reflectivity is greater than 97%.

The light outlet 11 has a light outlet surface 111, and the third end 5 does not protrude from the light outlet surface 111. Specifically, the third end 5 is flush with the light emitting surface 111 or the third end 5 is recessed away from the light emitting surface 111 in a direction away from the light emitting opening 11. When the third end 5 is flush with the light emitting surface 111, the light emitted from the light emitting opening 11 is the greatest after polarized reflection treatment by the polarized light surface 41, and when the third end 5 is far from the light emitting opening 11 and recessed inward toward the light emitting cavity 101, the greater the recessed degree, the less the light emitted from the light emitting opening 11 after polarized reflection treatment by the polarized light surface 41. The third end 5 of the embodiment is flush with the light-emitting surface 111, and the first end 1 and the third end 5 are on the same light-emitting surface 111. It can be understood that by adjusting the included angle θ and the relative position between the third end portion and the light emitting surface 111, the light emitting angle, the light emitting number and the light emitting range can be controlled, so that the light emitting effect is diversified, and the production cost of the light emitting effect of the lamp is reduced.

The light enters the light-emitting cavity 101 from the light-entering opening 12 (light-emitting opening 11), is collimated and reflected by the first reflecting portion 2, is deflected and reflected by the second reflecting portion 4, and finally returns to the light-emitting cavity 101 and exits from the light-emitting opening 11 to the outside.

The light-emitting piece of this embodiment adopts first tip, first reflection of light portion, second tip, second reflection of light portion and third tip to form the light-emitting cavity, and the light that gets into the light-emitting cavity is respectively after the collimation reflection of first reflection of light portion and the deflection reflection processing of second reflection of light portion, and the light-emitting mouth that forms is surrounded from first tip outgoing to avoid the light to penetrate and effectively control the glare condition, its simple structure, and the light-emitting effect is good. In addition, the light emitting part of the embodiment has simple structure, easy realization in process and low production and assembly cost.

Example 2

Referring to fig. 5-7 on the basis of fig. 1-4, the present embodiment provides a light-emitting structure 200, and the light-emitting structure 200 includes a light source module 6 and the light-emitting member 100 of embodiment 1.

Specifically, the light source module 6 includes a substrate 61 having a ring structure, and a light emitting component 62 attached to the substrate 61. In the present embodiment, the light emitting component 62 employs a light emitting element 620, such as an LED light bead, of an SMD patch process. The light emitting elements 620 are uniformly mounted along the substrate 61. The adoption of the scheme is a mature and economical production process at present, and can reduce the overall production cost. In addition to the above processes, COB processes or other preferred light source production processes may also be used for production.

The first end 1 of the light emitting member is abutted against the outer edge of the substrate 61 of the light source module 6, and the light emitting member 100 is fixedly connected with the light source module 6. The light emitting component 62 formed by the light emitting elements 620 has a light emitting surface 622, and the light emitting surface 622 may be overlapped with the light emitting surface 111 or located above the light emitting surface 111, so that all the light emitted by the light emitting component 62 enters the light emitting cavity 101.

In some embodiments, the light emitting components 62 may be light emitting elements 620 with the same or different color temperatures, and attached to the substrate 61 as required. Because the light emitting components 62 are uniformly attached to the substrate 61 with the annular structure, the heat dissipation space is sufficient, and no additional heat dissipation device is required for cooling the light emitting components with medium and small power, so that the heat dissipation cost is reduced.

Referring to fig. 7, the light emitting element 620 has a light emitting center 621, and in the light emitting element 100, the light reflecting surface has a light reflecting curve, and a generatrix of the light reflecting curve is a portion of a parabola. In this embodiment, the center of luminescence is located at the focus of the parabola. In any cross section passing through the central axis Z, the polarization plane 41 is a polarization straight line, and the polarization straight line has an included angle θ with the central axis Z. The light emitted by the light emitting component 62 enters the light emitting cavity 101, is reflected by the reflecting surface 21, enters the light emitting surface 41, is reflected by the light emitting surface 41, and exits from the light emitting opening.

In the present embodiment, the included angle θ between the polarized light straight line and the central axis Z is 45 °, and since the light emitting center 621 is disposed at the parabolic focus of the reflecting surface 21, most of the light is reflected twice and exits from the light emitting surface 111 in the same direction, so that no direct light is emitted, glare can be effectively controlled, and the light emitting effect is good.

In the light source module, the light emitting elements are uniformly distributed on the substrate in a ring shape, the heat dissipation space is sufficient, and the heat dissipation structure outside the light source module and the overall heat dissipation cost can be reduced.

Example 3

On the basis of fig. 1-7, referring to fig. 8-9, the present embodiment further provides a lamp 300, such as a spotlight, a down lamp or a ceiling lamp, covering different power lamps, especially middle and small power lamps. The luminaire 300 comprises a housing 7 and the light exit structure of embodiment 2. The housing 7 is formed to extend upward from the first end 1 of the light emitting element 100 in a direction away from the light emitting port 11. In the present embodiment, the housing 7 and the light emitting member 100 are integrally injection molded, so that the housing 7 and the first end portion 1 are integrally connected. Through casing 7, can be connected fixedly with lamps and lanterns support or decorating the shell to save the assembly process, reduction in production cost.

The foregoing is merely illustrative and explanatory of the utility model as it is described in more detail and is not thereby to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.

Claims (10)

1. The light-emitting piece, its characterized in that, the light-emitting piece is the rotational symmetry body, includes:

A first end part provided with a light outlet;

the first light reflecting part is formed by extending the first end part upwards in an arc shape in a direction away from the light outlet, and is provided with a light reflecting surface;

the second end part is the top end of the light emitting piece;

a second light reflecting part formed by extending the second end part obliquely downwards towards the direction close to the light outlet, the second light reflecting part being provided with a light polarization surface, and

A third end part arranged at the other end of the second reflecting part;

The first end part, the first light reflecting part, the second end part, the second light reflecting part and the third end part jointly surround to form a light emitting cavity.

2. The light-emitting device according to claim 1, wherein the third end portion is formed by the second light-reflecting portion extending obliquely downward toward the light-emitting opening and converging at a point.

3. A light-emitting article as claimed in claim 2, wherein the light-emitting article has a central axis Z, and the third end is located on the central axis Z.

4. A light-emitting article as recited in claim 3, wherein the light-emitting opening has a light-emitting surface, and the third end portion does not protrude from the light-emitting surface.

5. The light-emitting device according to claim 4, wherein in any cross section passing through the central axis Z, the light-reflecting surface is a light-reflecting curve, the light-reflecting curve is curved toward the light-emitting opening, and a generatrix of the light-reflecting curve is a portion of a parabola.

6. The light-emitting device according to claim 5, wherein the light-reflecting surface is an electroplated aluminum mirror surface or a scale microstructure for light mixing is provided on the light-reflecting surface.

7. A light-emitting article according to claim 3, wherein in any cross section passing through the central axis Z, the polarization plane is a polarization line, and an angle θ is formed between the polarization line and the central axis Z.

8. The light emitting structure is characterized by comprising a light source module and the light emitting piece according to any one of claims 1-7;

The light source module comprises a substrate with an annular structure and a light-emitting assembly attached to the substrate, wherein the light-emitting assembly is provided with a light-emitting surface, the light-emitting opening is provided with a light-emitting surface, and the light-emitting surface is overlapped with the light-emitting surface or is positioned above the light-emitting surface.

9. The light-emitting structure according to claim 8, wherein the light-emitting component is composed of a plurality of light-emitting elements of the same color temperature or a plurality of light-emitting elements of different color temperatures;

the light-emitting element has a light-emitting center;

the light emitting piece is provided with a central axis Z, the light reflecting surface is a light reflecting curve in any section passing through the central axis Z, a generatrix of the light reflecting curve is a part of a parabola, and the light emitting center is positioned on a focus of the parabola.

10. The lamp is characterized by comprising a shell and the light emitting structure of claim 9, wherein the shell and the light emitting piece are integrally injection molded.