Projection device

1. A projection device, comprising a first light-emitting component, a second light-emitting component and a housing, wherein the first light-emitting component and the second light-emitting component are fixed to the housing;

a first outer surface of the housing is provided with a first light outlet and a second light outlet; the first light-emitting component is arranged corresponding to the first light outlet; the second light-emitting component is arranged corresponding to the second light outlet; and the first light outlet has a larger area than the second light outlet;

the first light-emitting component comprises a first light source, a diffusion beam splitter and a hemispherical lens; the hemispherical lens covers the first light outlet and extends outside the housing; the first light source is located inside the housing; and the first light source and the hemispherical lens are located at two opposite sides of the diffusion beam splitter.

2. The projection device according to claim 1 , wherein a plurality of protrusion structures are arranged on a surface, facing the hemispherical lens, of the diffusion beam splitter; and the protrusion structures have heights ranging from 0.5 mm to 2.5 mm and are each of a water drop structure in an irregular shape.

3. The projection device according to claim 1 , wherein the first light-emitting component further comprises a driver, and the driver is fixedly connected with the diffusion beam splitter and used for driving the diffusion beam splitter to rotate in a circumferential direction of the first light outlet.

4. The projection device according to claim 1 , wherein the first light source comprises at least one lamp bead, and an inner wall of the hemispherical lens is provided with a plurality of connected polygonal structures.

5. The projection device according to claim 1 , wherein the first light-emitting component further comprises a first collecting lens located between the first light source and the diffusion beam splitter, and an inner wall of the hemispherical lens is provided with a plurality of irregular arc-shaped prism structures.

6. A projection device comprising a first light-emitting component, a second light-emitting component and a housing, wherein the first light-emitting component and the second light-emitting component are fixed to the housing;

a first outer surface of the housing is provided with a first light outlet and a second light outlet the first light-emitting component is arranged corresponding to the first light outlet the second light-emitting component is arranged corresponding to the second light outlet and the first light outlet has a larger area than the second light outlet;

the second light-emitting component comprises a second collecting lens, an image negative film, a third collecting lens and a second light source; the second collecting lens, the image negative film, the third collecting lens and the second light source are sequentially arranged in a direction away from the second light outlet; the second collecting lens is arranged in the second light outlet; and the image negative film, the third collecting lens and the second light source are fixedly arranged inside the housing.

7. The projection device according to claim 6 , wherein the second light-emitting component further comprises a light source fixing plate and a hollow fixing member; the light source fixing plate is fixedly connected with the fixing member; the second collecting lens, the image negative film and the third collecting lens are all embedded into the fixing member; and the second light source is arranged on the light source fixing plate;

the fixing member is sequentially provided with a first clamping groove, an accommodating cavity and a second clamping groove; the first clamping groove is used for placing the second collecting lens; the accommodating cavity is used for placing the image negative film; and the second clamping groove is used for placing the third collecting lens.

8. The projection device according to claim 7 , wherein the image negative film is provided with at least one pattern; the second light-emitting component further comprises a toggle member used for driving the image negative film to rotate; the image negative film is fixed to the toggle member; the toggle member is arranged inside the accommodating cavity; and the accommodating cavity is provided with an opening for exposing at least a part of the toggle member.

9. A projection device comprising a first light-emitting component, a second light-emitting component and a housing, wherein the first light-emitting component and the second light-emitting component are fixed to the housing;

a first outer surface of the housing is provided with a first light outlet and a second light outlet the first light-emitting component is arranged corresponding to the first light outlet the second light-emitting component is arranged corresponding to the second light outlet and the first light outlet has a larger area than the second light outlet;

the projection device further comprises a third light-emitting component which is fixedly arranged inside the housing; the first outer surface of the housing is further provided with a third light outlet corresponding to the third light-emitting component; and the third light-emitting component comprises a third light source and a light microscope.