CN102809122A - Light splitting assembly and light emitting device thereof - Google Patents

Abstract

The invention provides a light-emitting device, comprising a light guide column, a light-emitting component and a light splitting component, wherein the light splitting component is arranged on an LED light source of the light-emitting component, the light splitting component comprises outer curved surfaces, the inner edges of the outer curved surfaces are respectively inwards concave towards the bottom surface direction of the light splitting component to form a plurality of inner curved surfaces, the bottom ends of the inner curved surfaces correspond to the LED light source, and through the structure, light rays emitted by the LED light source can be divided into two parts through the light splitting component and are respectively uniformly dispersed towards the two ends of the light guide column, so that the problem of chromatic aberration generated by using more than two LED light sources can be avoided.

Description

Light-splitting component and its light-emitting device

technical field

The invention relates to a light-splitting component, in particular to a light-splitting component that can be used for a single LED light source, and has the function of evenly guiding light into a light guide column. The present invention also relates to a light emitting device, which has the aforementioned light splitting component.

Background technique

Fig. 5 shows a light emitting device of the prior art, which includes a light guide column 70 and a light emitting assembly 80 arranged between the gaps of the light guide column 70, wherein the light emitting assembly 80 has a circuit board 81, the circuit board 81 Both ends are respectively provided with LED light emitting components 82, 83, because the output of one LED light emitting component 82, 83 will be different in chromaticity even if the voltage is the same, so the light emitted by one LED light emitting component 82 is different in the light guide column 70. Different color temperature phenomena are likely to occur in the area between the one end 84 and the middle section 85 and the area between the other end 86 and the middle section 85 of another LED lighting assembly 83 . In addition, the angles at which the light emitted by the LED lighting components 82 and 83 enter the light guide column 70 are not optimally adjusted, and energy leakage may easily occur when the light passes through the light guide column 70 , resulting in poor overall luminous efficiency.

Contents of the invention

The present invention is based on the prior art that consists of more than two LED light-emitting components, resulting in different color temperatures. The purpose of the present invention is to provide a light-splitting component and its light-emitting device, which have the effect of uniform light emission.

In order to achieve the above object, the present invention provides a light-splitting assembly, the top surface of which is formed with two outer curved surfaces and two inner curved surfaces, the two sides of the top surface of the light-splitting assembly form these outer curved surfaces, and the inner edges of these outer curved surfaces face the side of the light-splitting assembly. The inner curved surfaces are concavely formed in the direction of the bottom surface respectively, the inner curved surfaces define a groove, and the bottom surface of the light splitting component forms a plane.

Preferably, the cross section of the groove is V-shaped.

Preferably, the inner curved surfaces and the outer curved surfaces are planes, and the included angle of each inner curved surface with respect to the bottom surface of the light splitting assembly is larger than the included angle of the adjacent outer curved surfaces with respect to the bottom surface of the light splitting assembly.

Preferably, the included angle between the bottom surface and the inner curved surface of the aforementioned light splitting component is larger than 42 degrees.

Preferably, the thickness of the bottom surface of the aforementioned light splitting component and the bottom end of the inner curved surface is 1.6 mm.

Preferably, the angle between the bottom surface of the light splitting component and the outer curved surface is 9 degrees.

On the other hand, the present invention also provides a light emitting device, which includes a light splitting component as mentioned above, a light guide column and a light emitting component, wherein

The light guide column is curved, and there is a gap between the two ends of the light guide column;

The light-emitting component is installed in the gap of the light guide column, and the light-emitting component includes a circuit board and an LED light source installed on the circuit board; and

The light-splitting component is covered on the LED light source; after the light emitted by the LED light source enters the light-splitting component, the angle between each light and the normal of any block of the inner curved surface and the outer curved surface is greater than the total reflection angle of the light-splitting component.

Preferably, the light emitting device further has a light shield, which is located between the two ends of the light guide column and is placed outside the light splitting assembly.

Preferably, fixing parts are formed at both ends of the bottom surface of the light splitting component of the light emitting device, and these fixing parts are embedded in the circuit board of the light emitting component.

Preferably, the light-splitting component is covered on the LED light source. After the light projected from the bottom surface of the LED light source enters the light-splitting component, the light with an angle between 0 and 35 degrees to the normal line of the bottom surface can pass through the inner curved surface. Reflection, and light with an angle greater than 35 degrees with the normal line of the bottom surface can be reflected by the outer curved surface and projected towards the two ends of the light splitting component to achieve the light splitting effect.

According to the present invention, the light-splitting component is made of common transparent light-guiding material, and its total reflection angle with the air medium interface is 42 degrees.

Through the light splitting component, the light emitted by the single LED light source is evenly emitted from both ends of the light splitting component. Since the light is emitted by the single LED light source, there will be no chromatic aberration in the light guide column. The present invention uses the structure of the light-splitting component to split the light of a single LED light source, so as to eliminate the chromatic aberration phenomenon caused by the difference in chromaticity between two or more LED light-emitting components, and reduce more than two LED light sources to a single LED light source. It can also achieve the purpose of reducing production costs.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is a three-dimensional appearance view of a preferred embodiment of the present invention;

Figure 2 is a top sectional view of a preferred embodiment of the present invention;

Fig. 3 is a side view partial enlarged view of a preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of LED light source projection in a preferred embodiment of the present invention;

Figure 5 is a top view of the prior art.

Among them, reference signs

10 light emitting device 20 light guide column

30 light-emitting components 31 circuit boards

32LED light source 40 light splitting components

41 Fixed part 42 Groove

43 Inner surface 431 Bottom

44 outer surface 45 normal

50 hood 70 light guide column

80 light-emitting components 81 circuit boards

82LED Lighting Components 83LED Lighting Components

84 end 86 end

85 middle section 90 hood

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

The light emitting device 10 in the preferred embodiment of the present invention is shown in FIG. 1 and FIG. 2 . It has a light guiding column 20 , a light emitting component 30 , a light splitting component 40 and a light shield 50 .

The light guide column 20 is curved, and there is a gap between two ends of the light guide column 20 .

The light-emitting component 30 is installed in the gap of the light guide column 20 , and the light-emitting component 30 includes a circuit board 31 and an LED light source 32 mounted on the circuit board 31 .

Please refer to FIG. 3 , the light splitting assembly 40 is covered on the LED light source 32, the top surface of the light splitting assembly 40 is formed with an outer curved surface 44 and an inner curved surface 43, and the periphery of the top surface of the light splitting assembly 40 forms the outer surface. Curved surface 44, the inner edge of the outer curved surface 44 is concavely formed with the inner curved surface 43 toward the bottom surface of the light splitting assembly 40, the inner curved surface 43 defines a groove 42, the cross section of the groove 42 is roughly V-shaped, and the inner curved surface 43 The bottom end 431 of the LED light source 32 is corresponding to the LED light source 32. The bottom surface of the light splitting assembly 40 forms a plane, that is, the plane where the LED light source 32 is located. The angle between the normals (such as a, b, c, d, e, f) of any block of each inner curved surface 43 and outer curved surface 44 is greater than the total reflection angle of the light splitting assembly 40, that is, greater than 42 degrees , the two ends of the bottom surface of the light splitting assembly 40 are respectively provided with fixing parts 41 , and the fixing parts 41 are connected with the circuit board 31 . After the light projected by the LED light source from the bottom surface of the aforementioned light-splitting component enters the light-splitting component, the light with an angle between 0 and 35 degrees with the normal line of the bottom surface can be reflected by the inner curved surface, and the light with an angle greater than 35 degrees with the normal line of the bottom surface The light can be reflected by the outer curved surface and projected toward both ends of the light splitting component to achieve the light splitting effect.

The shading cover 50 is located between the two ends of the light guide column 20 and outside the light splitting assembly 40 , so as to prevent the light emitted by the LED light source 32 from directly penetrating the light splitting assembly 40 to be emitted.

In a preferred embodiment of the present invention, the thickness between the bottom surface of the light splitting assembly 40 and the bottom end 431 of the inner curved surface is 1.6 mm, and the inner curved surface 43 and the outer curved surface 44 are planes, wherein the The angle between the inner curved surface 43 and the bottom surface of the light splitting assembly 40 is larger than the angle between the outer curved surface 44 and the bottom surface of the light splitting assembly 40. 42 degrees, the angle R between the outer curved surface 44 and the plane where the LED light source 32 is located is 9 degrees.

According to the present invention, as shown in FIG. 4 , after the single LED light source 32 on the circuit board 31 of the light-emitting component 30 of the light-guiding device 10 of the present invention enters the light-splitting component 40 , it is connected to any area of each inner curved surface 43 and outer curved surface 44 The included angle between the normal lines of the block (such as a, b, c, d, e, f) is greater than the total reflection angle of 42 degrees of the light splitting assembly 40, so the light emitted by a single LED light source 32 can be directed toward the two sides of the light splitting assembly 40. The light is projected into the light guide column 20, so that the light rays entering the light guide column 20 can be nearly parallel to achieve the purpose of reducing light loss.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. spectrum groupware; It is characterized in that; Its end face is formed with two positive cambers and two negative cambers, and the both sides of the end face of spectrum groupware form those positive cambers, the inner edge of those positive cambers towards the bottom surface of spectrum groupware direction respectively indent form this negative camber; Those negative cambers define a groove, and the bottom surface of this spectrum groupware forms a plane.

2. spectrum groupware according to claim 1 is characterized in that the section of this groove is V-shaped.

3. according to the said spectrum groupware of claim 1, it is characterized in that those negative cambers and positive camber are the plane, wherein each negative camber with respect to the angle of the bottom surface of spectrum groupware greater than the angle of adjacent positive camber with respect to the bottom surface of spectrum groupware.

4. according to the said spectrum groupware of claim 3, it is characterized in that the bottom surface of this spectrum groupware and the angle of each negative camber are greater than 42 degree.

5. according to claim 3 or 4 said spectrum groupware; It is characterized in that; The thickness of the bottom of those negative cambers to spectrum groupware bottom surface is 1.6 millimeters, use to make a led light source after the light of the bottom surface of aforementioned spectrum groupware projection gets into spectrum groupware, wherein and the light of bottom surface normal angle between between 0 to 35 degree can be through this negative camber reflection; And can be through positive camber reflection greater than the light of 35 degree with the bottom surface normal angle, and projection reaches spectrophotometric result towards the spectrum groupware two ends.

6. according to the said spectrum groupware of claim 5, it is characterized in that the bottom surface of this spectrum groupware and the angle of each positive camber are 9 degree.

7. according to the said spectrum groupware of claim 5, it is characterized in that the two ends of the bottom surface of this spectrum groupware respectively are provided with fixed part.

8. light-emitting device, it comprises just like any one spectrum groupware of claim 1 to 6, a leaded light post and a luminescence component, it is characterized in that,

This leaded light post is the curved arc shape, has a breach between the two ends of leaded light post;

This luminescence component is installed in the breach of this leaded light post, and this luminescence component comprises a circuit board and and is installed in the led light source on this circuit board; And

This spectrum groupware is covered on the led light source; After wherein the light of led light source emission got into spectrum groupware, the angle between the normal of arbitrary block of each light and negative camber and positive camber was greater than the total reflection angle of spectrum groupware.

9. light-emitting device according to claim 8 is characterized in that, also has a light shield, and they are between the two ends of leaded light post and cover at outside the spectrum groupware.

10. according to Claim 8 or 9 described light-emitting devices, it is characterized in that the two ends of the bottom surface of this spectrum groupware are formed with fixed part, those fixed parts are connected with the circuit board of luminescence component.

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