Light emitting part, light emitting structure and lamp

Abstract

The utility model relates to the technical field of illumination, and discloses a light emitting piece which is a rotational symmetric 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, the first end part is provided with a light outlet; the first reflecting part is formed by extending the first end part upwards in an arc-shaped manner in the direction far away from the light outlet, and is provided with a reflecting surface; the second end part is the top end of the light emitting part; the second end part obliquely extends downwards in the direction close to the light outlet to form the second light reflecting part, and the second light reflecting part is provided with a polarization 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. The light entering the light outlet cavity is emitted from the light outlet after being collimated and reflected by the first light reflecting part and deflected and reflected by the second light reflecting part, so that the direct light is avoided, the glare condition is effectively controlled, and the light outlet effect is good. The utility model further provides a light emitting structure comprising the light emitting piece and a lamp.

Description

Technical Field

[0001] The utility model belongs to the field of lighting, and in particular relates to a light emitting component, a light emitting structure and a lamp. Background Art

[0002] Among the lamps that provide basic lighting, especially small and medium power spotlights and ceiling lamps, they are widely used in lighting areas such as living rooms, shopping malls, hotels and offices because of their good light output and can meet lighting needs such as regional lighting, atmosphere lighting and decorative lighting.

[0003] At present, the light source commonly used in spotlights is COB light source. COB light source has a simple light distribution method and excellent light output effect, but COB light source is relatively expensive due to the COB packaging process, and the heat is too concentrated, so additional heat sinks and other heat dissipation structures are required. Therefore, spotlights using COB light source do not have a price advantage in the whole lamp.

[0004] In spotlights that use SMD patch light sources, the specifications and quantity of SMD patches are relatively fixed, making the light distribution method of the light source more complicated; in addition, the light source module using the SMD patch process usually requires the use of multiple light-emitting elements to achieve. In order to meet the lighting effect, the commonly used light distribution schemes are: (1) one light-emitting element corresponds to one lens; (2) centralized light distribution method. The structure of the light distribution scheme (1) is simple, but when multiple light-emitting elements are required, multiple lenses need to be configured accordingly, and the transmission method of a single light-emitting element is complex, making it difficult to control the lighting effect; the light distribution scheme (2) requires that multiple light-emitting elements be concentrated in one place, which has the problem of heat accumulation, which will undoubtedly increase the heat dissipation cost of the lamp; in addition, since the light source of the light distribution scheme (2) is too concentrated, there is also the problem of difficulty in making the angle small. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the utility model provides a light emitting member, which uses a first end, a first light reflecting portion, a second end, a second light reflecting portion and a third end to form a light emitting cavity. The light entering the light emitting cavity is processed by the first light reflecting portion and the second light reflecting portion, and then emitted from a light outlet formed around the first end, thereby avoiding direct light and effectively controlling glare, and achieving a good light emitting effect. The utility model also provides a light emitting structure including the light emitting member, and a lamp.

[0006] The technical effects to be achieved by the present invention are specifically achieved through the following technical aspects:

[0007] In a first aspect, the utility model provides a light emitting member, which is a rotationally symmetrical body, including a first end, a first light reflecting portion, a second end, a second light reflecting portion and a third end.

[0008] The first end portion is provided with a light outlet.

[0009] The first light reflecting portion is formed by the first end portion extending upward in an arc shape in a direction away from the light outlet, and the first light reflecting portion is provided with a light reflecting surface.

[0010] The second end portion is the top end of the light emitting element.

[0011] The second light reflecting portion is formed by the second end portion extending obliquely downward toward the direction close to the light outlet, and the second light reflecting portion is provided with a polarizing surface.

[0012] The third end portion is disposed at the other end of the second light reflecting portion;

[0013] The first end, the first light reflecting portion, the second end, the second light reflecting portion and the third end together surround and form a light output cavity.

[0014] 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.

[0015] In a further embodiment, the light output member has a central axis Z, and the third end is located on the central axis Z.

[0016] In a further embodiment, the light outlet has a light outlet surface, and the third end portion does not protrude from the light outlet surface.

[0017] In a further embodiment, in any cross section passing through the central axis Z, the reflective surface is a reflective curve, the reflective curve is arc-shaped toward the light outlet, and the generatrix of the reflective curve is a part of a parabola.

[0018] In the previous embodiment, more specifically, the reflective surface is an electroplated aluminum mirror, or the reflective surface is provided with a scale armor microstructure for light mixing.

[0019] In a further embodiment, 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.

[0020] In a second aspect, the utility model further provides a light emitting structure, comprising a light source module, and a light emitting member described in any of the above embodiments;

[0021] The light source module comprises a substrate in an annular structure and a light-emitting component attached to the substrate, wherein the light-emitting component has a light-emitting surface, the light outlet has a light-emitting surface, the light-emitting surface coincides with the light-emitting surface, or the light-emitting surface is located above the light-emitting surface.

[0022] 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;

[0023] A light emitting center is provided on the light emitting element;

[0024] The light emitting element has a central axis Z. In any cross section passing through the central axis Z, the reflective surface is a reflective curve, the generatrix of the reflective curve is a part of a parabola, and the light emitting center is located at the focus of the parabola.

[0025] In a third aspect, the utility model further provides a lamp, comprising a housing and the above-mentioned light emitting structure, wherein the housing and the light emitting member are integrally injection molded.

[0026] In summary, the present invention has at least the following benefits:

[0027] 1. The light emitting element provided by the utility model adopts a first end, a first light reflecting part, a second end, a second light reflecting part and a third end to form a light emitting cavity. The light entering the light emitting cavity is respectively processed by collimated reflection by the first light reflecting part and deflected reflection by the second light reflecting part, and then emitted from a light outlet formed around the first end, thereby avoiding direct light and effectively controlling glare. The structure is simple and the light emitting effect is good.

[0028] 2. The light-emitting structure provided by the utility model can perform secondary reflective light control processing on the light source module with one light-emitting component, and can effectively and flexibly control the light-emitting angle; in the light source module, the light-emitting elements are evenly distributed on the substrate in a ring shape, and the heat dissipation space is sufficient, which can reduce the heat dissipation structure outside the light source module and the overall heat dissipation cost.

[0029] 3. The lamp provided by the utility model can make the housing and the light emitting element an integrally formed structure, thus saving assembly steps and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a cross-sectional schematic diagram of the light emitting member of Example 1 of the utility model.

[0031] Figure 2 for Figure 1 Schematic diagram of the cross-section of the local structure along the AA plane.

[0032] Figure 3 It is a cross-sectional schematic diagram of the first light reflecting portion in Example 1 of the utility model.

[0033] Figure 4 Schematic diagram of the light path of the light emitting element in Example 1 of the utility model.

[0034] Figure 5It is a cross-sectional schematic diagram of the light output structure of Example 2 of the utility model.

[0035] Figure 6 for Figure 5 Schematic cross-sectional view of the overall structure along plane BB.

[0036] Figure 7 This is a schematic diagram of the light path when θ is 45° in Example 2 of the utility model.

[0037] Figure 8 It is a cross-sectional schematic diagram of the lamp of Example 3 of the utility model.

[0038] Fig. 9 for Figure 8 Schematic cross-sectional view of the overall structure along the CC plane.

[0039] Markings in the figure:

[0040] 100-Light-emitting parts, 200-Light-emitting structure, 300-Lamps;

[0041] 1-first end; 101-light output cavity; Z-central axis;

[0042] 11-Light exit, 111-Light exit surface, 12-Light entrance;

[0043] 2-first reflecting portion, 21-reflecting surface;

[0044] 3- second end;

[0045] 4-second reflecting portion, 41-polarizing plane;

[0046] 5- the third end;

[0047] 6-light source assembly, 61-substrate, 62-light emitting assembly, 620-light emitting element, 621-light emitting center; 622-light emitting surface;

[0048] 7- housing; DETAILED DESCRIPTION

[0049] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0051] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0053] Example 1

[0054] Please see attached Figure 1-4 The utility model provides a light emitting component 100, which is used for performing reflective light distribution processing on the light emitted by the light source module, and the light emitting component 100 includes a first end 1, a first light reflecting part 2, a second end 3, a second light reflecting part 4 and a third end 5, wherein the first end 1, the first light reflecting part 2, the second end 3, the second light reflecting part 4 and the third end 5 surround and form a light emitting cavity 101. The light emitting component 100 can be made of a resin plastic material through an injection molding process, such as PC (polycarbonate) or ABS [a terpolymer of three monomers of acrylonitrile (A), butadiene (B), and styrene (S)] for one-piece injection molding. Figure 1 As shown, the light emitting element 100 is a rotationally symmetrical body formed by rotating around the central axis Z.

[0055] In the light emitting member 100, the first end portion 1 is located at the outer edge of the light emitting member 100 and is in an annular structure, and the first end portion 1 surrounds and forms a light outlet 11. In this embodiment, the light outlet 11 of the light emitting 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 emitting cavity 101 from the light inlet, and after the reflective light control treatment of the light emitting member 100, it is emitted from the light outlet 11 to the outside. The light outlet cavity 101 is connected to the external area that needs to be illuminated through the light outlet 11.

[0056] The first light reflecting portion 2 is formed by the first end portion 1 extending upward in an arc shape in a direction away from the light outlet 11. In the first light reflecting portion 2, the inner side surface facing the light outlet 11 is a light reflecting surface 21.

[0057] The second end portion 3 is arranged at the top of the light emitting member 100, and then the second end portion 3 extends obliquely downward in the direction close to the light outlet 11 to form a second light reflecting portion 4, in which a polarizing surface 41 is arranged. The polarizing surface 41 of the second light reflecting portion 4 and the reflecting surface 21 of the first light reflecting portion 2 both reflect the light; the difference is that the reflecting surface 21 performs collimated reflection on the light, while the polarizing surface 41 deflects the light downward. The two reflect in coordination, and can perform secondary reflection light distribution on the light, so that the light is deflected and emitted downward.

[0058] 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 . It can be 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 .

[0059] 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 outlet 11 and converging at a point. It can be understood that the first end 1 and the second end 3 are both annular ends, while the third end 5 is a point-shaped end, and the third end 5 is located on the central axis Z of the light emitting member 100.

[0060] In other embodiments, when the third end 5 is a point-shaped end, it may not be located on the central axis Z, that is, the third end 5 deviates from the central axis Z.

[0061] In other embodiments, the third end 5 may also be configured as an annular end, 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 annular structure may also coincide with or deviate from the central axis Z.

[0062] refer to Figure 2 and Figure 3In any cross section passing through the central axis Z, the reflective surface 21 is a reflective curve, the reflective curve is arc-shaped toward the light outlet 11, and the generatrix of the reflective curve is a part of a parabola.

[0063] exist Figure 3 In the figure, a rectangular coordinate system (x, y) is established with the point where the reflective surface 21 intersects with the first end 1 as the origin O, the axis passing through the origin O horizontally as the X axis, and the axis passing through the origin O and perpendicular to the X axis as the Y axis. In the rectangular coordinate system (x, y), the parabolic function of the generatrix of the reflective curve conforms to y 2 =2px(p>0,y≥0).

[0064] In some embodiments, the first reflective portion 2 may be made of PC or ABS, and the reflective surface 21 may be an electroplated aluminum mirror for directly reflecting light. In some embodiments, a scale microstructure for light mixing may also be provided on the reflective surface 21 to mix the incident light to make the light softer, or to mix light of different color temperatures to provide a variety of light effects.

[0065] In any cross section of the light emitting member passing through the central axis Z, the polarization plane 41 is a polarization straight line, and an angle θ is formed between the polarization straight line and the central axis Z. When the third end 5 is a point-shaped end and coincides with the central axis Z, the third end 5, the second light reflecting portion 4 and the second end 3 form a V-shaped structure. A conical groove is formed in the middle of the overall structure of the light emitting member 100. When the third end 5 is an annular end and the center of the annular end coincides with the central axis Z, the third end 5, the second light reflecting portion 4 and the second end 3 form an inverted trapezoidal structure.

[0066] In this embodiment, the angle θ formed by the polarization line and the central axis Z is in the range of 40-60°, preferably 45°. By adjusting the angle θ, the emission direction of the light after the polarization reflection treatment by the second reflective portion 4 can be adjusted.

[0067] In some embodiments, the material of the second reflective portion 4 can be PC or ABS, and the polarizing surface 41 must be an electroplated aluminum mirror. In other embodiments, the second reflective portion 4 can also be made of a high-reflective material with better reflection effect, such as a mirror high-reflective surface on the surface of the polarizing surface 41, or a PET high-reflective surface is attached to the polarizing surface 41, and its reflectivity is greater than 97%.

[0068] It should be noted that 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 outlet surface 111 or the third end 5 is recessed away from the light outlet surface 111 in a direction away from the light outlet 11. When the third end 5 is flush with the light outlet surface 111, the light emitted from the light outlet 11 is the largest after the polarized light reflection treatment by the polarizing plane 41; when the third end 5 is away from the light outlet 11 and recessed inward toward the light outlet cavity 101, the greater the degree of recessing, the less light emitted from the light outlet 11 after the polarized light reflection treatment by the polarizing plane 41. The third end 5 of this embodiment adopts a solution of being flush with the light outlet surface 111, and the first end 1 and the third end 5 are on the same light outlet surface 111. It is understandable that by adjusting the angle θ and the relative position of the third end and the light emitting surface 111, the emission angle, emission quantity and emission range of the light can be controlled to diversify the lighting effect and reduce the production cost of the lighting effect of the lamp.

[0069] Light enters the light output cavity 101 from the light inlet 12 (light output port 11 ), is first collimated and reflected by the first reflective portion 2 , then deflected and reflected by the second reflective portion 4 , and finally returns to the light output cavity 101 and is emitted to the outside from the light output port 11 .

[0070] The light emitting member of this embodiment uses the first end, the first light reflecting portion, the second end, the second light reflecting portion and the third end to form a light emitting cavity. The light entering the light emitting cavity is respectively processed by the collimated reflection of the first light reflecting portion and the deflected reflection of the second light reflecting portion, and then emitted from the light outlet formed around the first end, thereby avoiding direct light and effectively controlling glare. The structure is simple and the light emitting effect is good. In addition, the light emitting member of this embodiment has a simple structure, is easy to implement in terms of process, and has low production and assembly costs.

[0071] Example 2

[0072] Based on the same 1-4 reference Figure 5-7 This embodiment provides a light emitting structure 200 , which includes a light source module 6 and the light emitting member 100 of Embodiment 1.

[0073] Specifically, the light source module 6 includes a substrate 61 in an annular structure, and a light-emitting component 62 attached to the substrate 61. In this embodiment, the light-emitting component 62 uses a light-emitting element 620 of SMD patch technology, such as an LED lamp bead. The light-emitting element 620 is evenly attached along the substrate 61. This solution is currently a more mature and economical production process, which can reduce the overall production cost. In addition to the above process, COB process or other better light source production processes can also be used for production.

[0074] The first end portion 1 of the light emitting member abuts against the outer edge of the substrate 61 of the light source module 6, and then the light emitting member 100 is fixedly connected to the light source module 6. The light emitting assembly 62 formed by the plurality of light emitting elements 620 has a light emitting surface 622, which can overlap with the light emitting surface 111 or be located above the light emitting surface 111, so that all the light emitted by the light emitting assembly 62 can enter the light emitting cavity 101.

[0075] In some embodiments, the light emitting assembly 62 can use light emitting elements 620 of the same or different color temperatures, and can be attached to the substrate 61 as needed. Since the light emitting assembly 62 is evenly attached to the substrate 61 of the ring structure, there is sufficient heat dissipation space, and for small and medium power light emitting assemblies, there is no need to design additional heat dissipation devices for cooling, thereby reducing the heat dissipation cost.

[0076] refer to Figure 7 , the light emitting element 620 has a light emitting center 621; as mentioned above, in the light emitting element 100, the reflective surface is a reflective curve, and the generatrix of the reflective curve is a part of the parabola. In this embodiment, the light emitting center 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 angle θ with the central axis Z. The light emitted by the light emitting component 62 enters the light emitting cavity 101, enters the polarization plane 41 after being reflected by the reflective surface 21, and then exits from the light outlet after being reflected by the polarization plane 41.

[0077] In this embodiment, the angle θ between the polarization line and the central axis Z is 45°. Since the light emitting center 621 is set at the parabola focus of the reflective surface 21, most of the light is reflected twice and emitted from the light emitting surface 111 in the same direction. There is no direct light, glare can be effectively controlled, and a good light emitting effect is achieved.

[0078] The light-emitting structure provided in this embodiment uses a light-emitting component to perform secondary reflective light control processing on the light source module, which can effectively and flexibly control the light-emitting angle; in the light source module, the light-emitting elements are evenly distributed on the substrate in a ring shape, and the heat dissipation space is sufficient, which can reduce the heat dissipation structure outside the light source module and the overall heat dissipation cost.

[0079] Example 3

[0080] exist Figure 1-Figure 7 Based on the reference Figure 8-Figure 9, this embodiment also provides a lamp 300, such as a spotlight, a downlight or a ceiling light, covering lamps of different powers, especially small and medium power lamps. The lamp 300 includes a shell 7 and the light-emitting structure of Example 2. The shell 7 extends upward from the first end 1 of the light-emitting member 100 in a direction away from the light outlet 11. In this embodiment, the shell 7 and the light-emitting member 100 are integrally injection-molded, so that the shell 7 and the first end 1 are connected as a whole. Through the shell 7, it can be connected and fixed to the lamp bracket or the decorative shell, thereby saving assembly steps and reducing production costs.

[0081] The above contents are merely examples and illustrations of the structure of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these obvious replacement forms all belong to the protection scope of the utility model.

Claims

1. A light emitting element, characterized in that: The light emitting element is a rotationally symmetrical body, comprising: The first end portion is provided with a light outlet; A first light reflecting portion, formed by the first end portion extending upward in an arc shape away from the light outlet, and the first light reflecting portion is provided with a light reflecting surface; The second end portion is the top end of the light emitting member; A second light reflecting portion, formed by the second end portion extending obliquely downward toward the direction close to the light outlet, the second light reflecting portion being provided with a polarizing surface; and A third end portion, disposed at the other end of the second light reflecting portion; The first end, the first light reflecting portion, the second end, the second light reflecting portion and the third end together surround and form a light output cavity.

2. The light emitting element according to claim 1, characterized in that: The third end portion is formed by the second light reflecting portion extending obliquely downward toward the light outlet and converging at a point.

3. The light emitting element according to claim 2, characterized in that: The light output member has a central axis Z, and the third end is located on the central axis Z.

4. The light emitting element according to claim 3, characterized in that: The light outlet has a light outlet surface, and the third end portion does not protrude from the light outlet surface.

5. The light emitting element according to claim 4, characterized in that: In any cross section passing through the central axis Z, the reflective surface is a reflective curve, the reflective curve is arc-shaped toward the light outlet, and the generatrix of the reflective curve is a part of a parabola.

6. The light emitting element according to claim 5, characterized in that: The reflective surface is an electroplated aluminum mirror surface, or the reflective surface is provided with a scale armor microstructure for light mixing.

7. The light emitting element according to claim 3, characterized in that: 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. A light emitting structure, characterized in that: It comprises a light source module and the light emitting element according to any one of claims 1 to 7; The light source module comprises a substrate in an annular structure and a light-emitting component attached to the substrate, wherein the light-emitting component has a light-emitting surface, the light outlet has a light-emitting surface, the light-emitting surface coincides with the light-emitting surface, or the light-emitting surface is located above the light-emitting surface.

9. The light output structure according to claim 8, characterized in that: 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; The light-emitting element has a light-emitting center; The light emitting element has a central axis Z. In any cross section passing through the central axis Z, the reflective surface is a reflective curve, the generatrix of the reflective curve is a part of a parabola, and the light emitting center is located at the focus of the parabola.

10. A lamp, characterized in that It comprises a shell and the light emitting structure according to claim 9, wherein the shell and the light emitting member are integrally injection molded.

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