CN218954722U - Mixed light lamp - Google Patents

Abstract

The utility model provides a light mixing lamp, which comprises a lamp shell and a light mixing optical module arranged in the lamp shell, wherein the light mixing optical module comprises a reflecting shade and a light emitting component, the inner side of the reflecting shade is provided with a reflecting curved surface, the lower part of the reflecting shade is a light emitting surface, the light emitting component is provided with a light emitting surface, the light emitting component is arranged at one end of the reflecting shade in a mode that the light emitting surface is perpendicular to the light emitting surface, and the light emitting surface faces the inner side of the reflecting shade; part of light rays emitted by the light-emitting component are reflected by the reflecting curved surface and then emitted from the light-emitting surface to form a first light path; the other part of light rays emitted by the light-emitting component directly exit from the light-emitting surface to form a second light path; the first optical path and the second optical path together form a hybrid optical path. In the light mixing optical module of the light mixing lamp, the light emitting component is laterally arranged on the reflecting cover, and the reflecting cover and the light emitting component are matched, so that the irradiation range is moved forward while the full light mixing is realized, the glare is effectively avoided, and the light uniformity is improved.

Description

Mixed light lamp

Technical Field

The utility model relates to the technical field of lamp illumination, in particular to a light mixing lamp.

Background

With the increasing development of the market scale of the lamp, the functions and parameters of the existing lamp are more and more powerful, such as dimming and toning the lamp according to requirements. At present, most light sources with dimming and color mixing lamps adopt double-color lamp beads, but after light rays of the double-color lamp beads are emitted, a light emitting surface with low uniformity is easily formed due to insufficient light mixing, so that the using effect of the lamps is affected.

In order to solve the above-mentioned problems, it is conventional practice to increase the distance between the light source and the diffusion plate or the distance between the light source and the edge of the light surface, thereby achieving sufficient light mixing. However, the overall size of the lamp is increased, the aesthetic property of the lamp is reduced, and the illumination intensity on the illumination surface is reduced. Another conventional approach is to add a diffuser plate or sheet to achieve light mixing. However, in order to ensure the light mixing effect, the large haze diffusion plate is often used to consume luminous flux, lead to light emission and divergence, have low utilization rate, and finally lead to low uniformity and illuminance value, thereby affecting the overall performance of the lamp.

In addition, in some applications of the lamp, there is often a special requirement for the irradiation range of the lamp. If the desk lamp is usually placed in front of a user in the use process, the irradiation range and the strongest light intensity of the traditional desk lamp are usually located under the desk lamp and do not fall into the read-write area of the user sufficiently, so that the practicability of the desk lamp is reduced. Meanwhile, the light source point of the desk lamp is easy to generate direct glare for a user.

To sum up, in order to optimize the lighting effect of the lamp, it is necessary to provide a lamp that is advanced in a fully mixed light and lighting range.

Disclosure of Invention

In order to solve the above problems in the prior art, the present utility model provides a light mixing lamp, which makes light emergent along a first light path and a second light path respectively by matching positions between a reflector and a light emitting component, and fully mixes the light on a light emergent surface, and makes the light deviate relative to a lamp housing, so that an irradiation range moves forward.

In order to achieve the above object, the present utility model provides the following technical solutions:

the light mixing lamp comprises a lamp shell and a light mixing optical module arranged in the lamp shell, wherein the light mixing optical module comprises a reflecting shade and a light emitting component, a reflecting curved surface is arranged on the inner side of the reflecting shade, a light emitting surface is arranged below the reflecting shade, the light emitting component is provided with a light emitting surface, the light emitting component is arranged at one end of the reflecting shade in a mode that the light emitting surface is perpendicular to the light emitting surface, and the light emitting surface faces the inner side of the reflecting shade;

a part of light rays emitted by the light-emitting component are reflected by the reflecting curved surface and then emitted from the light-emitting surface to form a first light path;

the other part of light rays emitted by the light-emitting component directly exit from the light-emitting surface to form a second light path; the first optical path and the second optical path together form a hybrid optical path.

Preferably, the light emitting assembly includes a substrate and a light emitting unit disposed on the substrate, and the substrate is perpendicular to the light emitting surface.

Preferably, the LED display device further comprises a diffusion plate, wherein the diffusion plate is arranged at the light-emitting surface.

Preferably, the reflective curved surface is a specular reflective surface.

Preferably, the reflective curved surface is provided with a first end and a second end, the first end is higher than the second end, and the light emitting component is arranged at one end where the first end is positioned; the light emitting surface is formed by the light emitting unit, which is disposed toward the second end portion.

Preferably, on a cross section where the reflecting cover and the light emitting component are located together, the light emitting unit is used as an origin, a direction parallel to the light emitting surface is used as an X axis, the substrate perpendicular to the light emitting surface is used as a Y axis, a rectangular coordinate system is established, the first light path is provided with an F point with coordinates (Xf, yf) on the reflecting cover, the first light path is provided with an M point with coordinates (Xm, ym) on the light emitting surface, and a tangential slope Kf of the F point passing through any point on the reflecting cover meets the following formula:

preferably, the lamp housing is provided with a side wall and a shading part connected with the side wall, and the light emitting surface is positioned between the shading parts.

Preferably, the light shielding part extends towards the inner side of the lamp housing, and the light emitting component is close to the side wall and is located at the inner side of the light shielding part.

Preferably, the lamp housing is of an arc-shaped structure, and the light-emitting component faces to one side of the lamp housing, which is convex.

Preferably, the light emitting component and the diffusion plate are matched with the lamp housing.

Based on the technical scheme, the utility model has the following technical effects:

(1) The light emitting component is arranged at one end of the reflecting cover, and the light emitting component is matched with the reflecting curved surface on the reflecting cover, so that light rays with different angles are emitted along the first light path and the second light path respectively and are mixed on the light emitting surface, and light mixing is fully realized.

(2) On the other hand, the reflecting curved surface is matched with the side-arranged luminous component, so that the light is uniformly reflected in the forward range of the lamp housing. The light irradiation range is enabled to fall into the read-write area range, the light utilization efficiency is improved, meanwhile, the direct glare is reduced, and the use experience of the lamp is optimized.

Drawings

Fig. 1 is a cross-sectional view of a light mixing lamp of the present utility model.

Fig. 2 is a schematic diagram of an optical path of the light mixing lamp of the present utility model.

Fig. 3 is a schematic diagram of a table top illuminance test point according to the present utility model.

Fig. 4 is another view cross-section of the light mixing lamp of the present utility model.

Reference numerals:

1 reflector, 11 reflective curved surface, 111 first end, 112 second end, 2 light-emitting component, 21 base plate, 22 light-emitting unit, 3 accuse light space, 31 first light path, 32 second light path, 4 light-emitting surface, 5 diffuser plate, 6 lamp body, 61 lateral wall, 62 shading parts.

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.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

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

Fig. 1 is a cross-sectional view of a light mixing lamp according to the present embodiment, and as shown in fig. 1, the present embodiment provides a light mixing lamp, which includes a lamp housing 6 and a light mixing optical module installed in the lamp housing 6. The light mixing optical module comprises a reflecting cover 1 and a light emitting component 2, wherein a part of light rays emitted by the light emitting component 2 are emitted along a first light path 31 after being reflected by the reflecting cover 1, and the other part of light rays are emitted along a second light path 32 directly from the light emitting surface 4. The light rays of the first light path 31 and the second light path 32 are fully mixed on the light emitting surface 4, so that the color of the light emitting effect is uniform.

Specifically, a reflective curved surface 11 is arranged on the inner side of the reflector 1, the reflective curved surface 11 is of an integral smooth cambered surface structure, and a light control space 3 is formed below the reflective curved surface 11. Right below the light control space 3 is a light emitting surface 4 which is horizontally arranged. The reflective curved surface 11 is provided with a first end 111 and a second end 112 having a height difference, and the first end 111 is higher than the second end 112. The light emitting assembly 2 is disposed at a side where the first end 111 is located. Wherein the light emitting assembly 2 includes a substrate 21 and a light emitting unit 22 disposed on the substrate 21. The plurality of light emitting units 22 form a light emitting surface, the substrate 21 is disposed at the first end 111 of the reflector 1 in a direction perpendicular to the light emitting surface 4, and the light emitting units 22 are disposed on the substrate 21 in a direction of the light emitting surface toward the second end 112, so that the entire light emitting assembly 2 is disposed at one end of the reflector 1. Part of the light rays emitted by the light emitting unit 22 are emitted to the reflecting curved surface 11 on the inner side of the reflecting shade 1, reflected by the reflecting curved surface 11 and emitted from the light emitting surface 4 to form a first light path 31, and the other part of the light rays pass through the light control space 3 and directly emitted from the light emitting surface 4 to form a second light path 32. The light of the first light path 31 and the light of the second light path 32 are fully mixed at the light-emitting surface 4 to form a mixed light path together, and finally, the color on the irradiation surface is uniform, so that the light efficiency is optimized.

In particular, the reflective curved surface 11 has a specific slope in order to further optimize the light mixing effect. As shown in fig. 1, on the cross section of the reflector 1 and the light emitting element 2, the light emitting unit 22 is used as an origin, the direction parallel to the light emitting surface 4, that is, the direction of the horizontal plane is used as an X axis, and the substrate 21 perpendicular to the light emitting surface 4 is used as a Y axis, and a rectangular coordinate system is established. Let the point of the first optical path 31 at the reflector 1 be F, the coordinates be (Xf, yf), and correspondingly, the point of the first optical path 31 falling on the light-emitting surface 4 after being reflected by the reflector 1 be M, the coordinates be (Xm, ym), the slope Kf of the tangent line at the point F meets the following formula:

in addition, let the total length of the light-emitting surface 4 be Lm, and divide the light-emitting surface 4 into n equal parts, i.e., each part has a length La, la=lm/n; correspondingly, let the angle range of the light emitted by the light emitting unit 22 incident on the reflective curved surface 11 be Jz, the angle range is equally divided into n equal parts, and each part has the angle Ja. In order to make the light rays of the first light path 31 and the second light path 32 sufficiently mixed on the light emitting surface 4, the coordinates of any point F on the reflecting surface and the corresponding slope Kf can be calculated by the slope formula, so as to define the structure of the reflecting curved surface 11.

Specifically, the initial point F of the light of the first optical path 31 on the reflecting curved surface 11 within the angle range is determined based on the determined coordinate system and the design of the structural part ₀ Is (Xf) ₀ ，Yf ₀ ) Corresponding to the initial point M of the light-emitting surface 4 ₀ The coordinates are (Xm) ₀ ，Ym ₀ ) The angle of the light emitted from the light-emitting unit 22 is Jz ₀ And determining the point F according to the slope formula ₀ The tangential slope at the position is Kf ₀ 。

The incident angle of the next ray is Jz ₀ Ja, the incident ray and point F ₀ Intersecting the tangent line of (a) at point F ₁ (Xf ₁ ，Yf ₁ )。

The coordinates of the point a can be calculated by the following calculation formula:

meanwhile, the point B corresponding to the point a on the light-emitting surface 4 of the first optical path 31 is (xm1+la, ym) ₀ ) Knowing the coordinates of the point A and the point B, and calculating the slope Kf of the tangent line corresponding to the point A on the reflecting surface according to a slope formula ₁ 。

And so on, so as to calculate the coordinates of any point left on the reflecting curved surface 11 and the slope of the corresponding tangent line, and finally determine the structure of the reflecting curved surface 11. In summary, the slope of the tangent at any point on the reflecting curved surface 11 should conform to the above-described calculation formula of the slope Kf. The specific slope value is adjusted according to the factors such as the target irradiation angle range, the length of the light-emitting surface 4 and the like.

Further, the reflector 1 in this embodiment is made of PC or high-reflectivity aluminum material, wherein the reflective curved surface 11 is surface-treated by electroplating aluminum or high-reflectivity PC to obtain a mirror effect. The reflective curved surface 11 having the specular characteristic ensures concentration of the illumination range while achieving sufficient mixing of the first optical path 31 and the second optical path 32, without lowering the brightness of light due to excessive scattering.

In addition, fig. 2 shows a schematic light path diagram of the light mixing lamp of the embodiment. Referring to fig. 1 and 2 in combination, since the reflective curved surface 11 is provided with the first end 111 and the second end 112 with a height difference in the present embodiment, and the light emitting component 2 is disposed at the first end 111 of the reflector 1, the entire optical path of the light mixing lamp is deflected toward the side where the second end 112 is located. In this embodiment, an included angle of 50 ° is formed between the optical path of the light mixing lamp furthest from the first end 111 and the Y axis, so that the illumination range is effectively controlled, and glare caused by light to eyes is avoided.

Example 2

In this embodiment, the light mixing lamp further supplements embodiment 1, and further includes a diffusion plate 5, where the diffusion plate 5 is disposed at the light emitting surface 4, and performs further color mixing and light mixing on the emitted light, and softens the light spots.

The diffusion plate 5 may be made of PC, PS or PP. In this embodiment, the diffusion plate 5 having a light transmittance of 75% to 80% and a haze of 55% to 65% is preferable. Of course, in some embodiments, the haze and transmittance of the diffuser plate 5 may also be adjusted according to the target illuminance requirement. In general, the higher the haze, the better the light uniformity, but the corresponding light transmittance decreases. But the light mixing lamp provided in this embodiment can achieve a good light mixing effect, so that the low haze diffusion plate 5 can be selected, the light outgoing permeability is improved, and the illuminance value and the light uniformity are increased under the condition of ensuring the light mixing effect.

Example 3

The embodiment further supplements the light mixing lamp provided in embodiment 2.

Specifically, referring to fig. 1 with emphasis, the lamp housing 6 is provided with a side wall 61 and a light shielding portion 62 connected to a lower end of the side wall 61, and the light shielding portion 62 extends from the side wall 61 toward an inner side of the lamp housing 6. The light shielding portion 62 and the side wall 61 form a light shielding space inside the lamp housing 6, and the light emitting element 2 is disposed at the light shielding space inside the light shielding portion 62. The substrate 21 of the light emitting module 2 is parallel to and close to the side wall 61, and during use, a small portion of the light emitted from the light emitting module 2 is blocked by the light blocking portion 62 when emitted. Therefore, the light is adjusted while being deflected toward the second end 112, thereby further limiting the irradiation range and optimizing the illumination effect.

Fig. 3 is a schematic diagram of an illuminance test point on a table, where the light mixing lamp provided in this embodiment is placed at a height 400mm away from the table, and an illuminance value test is performed on an illumination surface of the light mixing lamp according to the illuminance test point on the table shown in fig. 3, and the obtained data are shown in table 1.

Table 1 table top illuminance test point illuminance values

Sequence number	22	23	24	25	26
						Illuminance level	361	378	363	380	354
Sequence number	17	18	19	20	21
						Illuminance level	574	616	604	620	567
Sequence number	12	13	14	15	16
						Illuminance level	864	947	942	947	854
Sequence number	7	8	9	10	11
						Illuminance level	1159	1284	1308	1278	1151
Sequence number	2	3	4	5	6
						Illuminance level	1347	1452	1475	1443	1329
Sequence number	-	-	1	-	-
						Illuminance level	-	-	1314	-	-

As can be seen from table 1, the test points 1 are corresponding to the positions right below the center of the light-emitting surface 4 of the lamp, and the rest of the test points are equidistantly arranged at a distance of 100mm from the test points 1. As can be seen from fig. 3 and table 1, the highest illuminance occurs at test point 4 within the irradiation range of the lamp, and test point 4 is 100mm from test point 1. The illuminance value of the test point 9 positioned in front of the test point 4 is equal to the illuminance value of the test point 1, and the distance between the test point 9 and the test point 1 is 200mm.

Therefore, as can be seen from the above description, the position of the strongest illuminance value of the lamp moves forward under the action of the light mixing optical module 100, so that most of the irradiation range of the lamp falls in front. Taking a lamp as an example, the front of the lamp is often a read-write area, the irradiation range falls into the read-write area, the light utilization rate is effectively improved, the use experience is optimized, the illumination is more comfortable, and meanwhile, direct glare of the lamp to a user can be effectively avoided.

It should be noted that the lamp may be a desk lamp or a strip lamp, and the specific type of the lamp is not limited.

In addition, fig. 4 shows a cross-sectional view of the lamp of the present embodiment from another perspective. As shown in fig. 4, the lamp housing 6 has an arc structure with both ends bent upward as a whole. The light emitting component 2 is installed inside the lamp housing 6, and the side of the light emitting component 2 is disposed beside the reflector 1 and faces to the protruding side of the lamp housing 6. The light exits from below the lamp housing 6. The overall shape of the luminous component 2 is matched with the lamp housing 6. In the use process, light rays are emitted outwards along the arc-shaped light-emitting component 2, the irradiation distance is increased in the direction that the two ends of the light-emitting component are bent upwards, and the irradiation area is increased. Correspondingly, the diffusion plate 4 is matched with the arc-shaped structure of the lamp housing 6.

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 mixing lamp is characterized by comprising a lamp shell and a light mixing optical module arranged in the lamp shell, wherein the light mixing optical module comprises a reflecting shade and a light emitting component, a reflecting curved surface is arranged on the inner side of the reflecting shade, a light emitting surface is arranged below the reflecting shade, the light emitting component is provided with a light emitting surface, the light emitting component is arranged at one end of the reflecting shade in a mode that the light emitting surface is perpendicular to the light emitting surface, and the light emitting surface faces the inner side of the reflecting shade;

a part of light rays emitted by the light-emitting component are reflected by the reflecting curved surface and then emitted from the light-emitting surface to form a first light path; the other part of light rays emitted by the light-emitting component directly exit from the light-emitting surface to form a second light path;

the first optical path and the second optical path together form a hybrid optical path.

2. The light mixing lamp of claim 1, wherein the light emitting assembly comprises a substrate and a light emitting unit disposed on the substrate, the substrate being perpendicular to the light exit surface.

3. The light mixing lamp of claim 1 further comprising a diffuser plate disposed at the light exit face.

4. The light mixing lamp of claim 1 wherein the reflective curved surface is a specular reflective surface.

5. The light mixing lamp of claim 2, wherein the reflective curved surface is provided with a first end and a second end, the first end is higher than the second end, and the light emitting component is arranged at one end where the first end is located; the light emitting surface is formed by the light emitting unit, which is disposed toward the second end portion.

6. The light mixing lamp according to claim 5, wherein on a cross section where the reflecting cover and the light emitting component are located together, a rectangular coordinate system is established by taking the light emitting unit as an origin and taking a direction parallel to the light emitting surface as an X axis and taking the substrate perpendicular to the light emitting surface as a Y axis, the first light path is provided with an F point with coordinates (Xf, yf) on the reflecting cover, the first light path is provided with an M point with coordinates (Xm, ym) on the light emitting surface, and a tangential slope Kf of the F point passing through any point of the reflecting cover conforms to the following formula:

7. the light mixing lamp of claim 1, wherein the lamp housing is provided with side walls and light shielding parts connected with the side walls, and the light emitting surface is positioned between the light shielding parts.

8. The light mixing lamp of claim 7, wherein the light shielding portion extends toward the inside of the lamp housing, and the light emitting assembly is adjacent to the sidewall and is located inside the light shielding portion.

9. A light mixing lamp as recited in claim 3, wherein the lamp housing is of arcuate configuration and the light emitting assembly faces a convex side of the lamp housing.

10. The light mixing lamp of claim 9 wherein the light emitting assembly and the diffuser plate are adapted to the lamp housing.

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