Illumination device and lamp comprising the illumination devices

1. An illumination device comprising:

a support structure comprising a plurality of engagement portions having a plurality of slots;

a light-emitting component being provided on one side of the support structure;

an opening being provided on a side of the support structure opposite to the light-emitting component;

an optical component cooperating with the opening of the support structure so as to form an accommodating space;

wherein, the light-emitting component is accommodated in the accommodating space, and the optical component comprises:

a light transmission portion, provided above a light-emitting side of the light-emitting component and configured to transmit light from the light-emitting component, the light transmission portion having a plurality of edge portions and a plurality of fixing portions provided along the plurality of edge portions, and the light transmission portion cooperating with the opening of the support structure by means of the plurality of edge portions so as to form the accommodating space; and

a plurality of sealing portions, provided along the plurality of edge portions of the light transmission portion, the plurality of slots being configured to receive the plurality of sealing portions;

wherein as the plurality of sealing portions are received by the plurality of slots, the plurality of fixing portions are directly in contact with, and snap-fitted to, the plurality of engagement portions so as to fix the light transmission portion to the support structure; and

wherein the light transmission portion and the plurality of sealing portions are integrally formed.

2. The illumination device according to claim 1 , wherein the light transmission portion comprises:

a main body portion configured to transmit the light from the light-emitting component;

wherein the plurality of fixing portions is configured to fix the main body portion on the support structure; and

wherein the plurality of fixing portions and the plurality of sealing portions are formed on a same surface of the main body portion, and the plurality of fixing portions are formed on inner sides or outer sides of the plurality of sealing portions relative to edges of the plurality of edge portions.

3. The illumination device according to claim 2 , wherein each of the plurality of sealing portions comprises:

an embedded portion extending from a surface of the main body portion to an interior of the main body portion so as to be embedded in the main body portion; and

a protruding portion protruding outward from the surface of the main body portion.

4. The illumination device according to claim 3 , wherein the embedded portion has a thread shape so as to be tightly embedded in the main body portion, or the embedded portion has a reverse cone shape extending from the interior of the main body portion to the surface of the main body portion, such that the embedded portion is embedded in the main body portion in an inverted snap form.

5. The illumination device according to claim 4 , wherein the main body portion is formed as a rectangular flat plate, and the plurality of sealing portions and the plurality of fixing portions are provided along two long sides of the rectangular flat plate.

6. The illumination device according to claim 2 , wherein the plurality of fixing portions is formed as a clamping strip shape so as to fix the main body portion to the support structure in a snap-fitting manner.

7. The illumination device according to claim 1 , wherein the plurality of sealing portions are provided along at least a part of each of the plurality of edge portions of the light transmission portion.

8. The illumination device according to claim 1 , wherein the light transmission portion is made of a transparent polycarbonate, polymethyl methacrylate (PMMA), or a polystyrene resin, and the plurality of sealing portions are made of a thermoplastic rubber or a silicone resin.

9. The illumination device according to claim 1 , wherein the plurality of sealing portions is made of a transparent, a translucent or a colored material.

10. The illumination device according to claim 1 , wherein a melting temperature range of a material forming the light transmission portion is 175° C. to 185° C., and a melting temperature range of the material forming the plurality of sealing portions is 155° C. to 165° C.

11. The illumination device according to claim 1 , wherein the support structure further comprises a heat dissipation component for dissipating heat generated by the light-emitting component, and the light transmission portion is fixed to the heat dissipation component.

12. The illumination device according to claim 11 , wherein the heat dissipation component comprises the plurality of engagement portions, and wherein the light transmission portion seals the plurality of slots and is fixed to the plurality of engagement portions.

13. The illumination device according to claim 1 , wherein the light-emitting component comprises a light-emitting strip having a plurality of LED chips.

14. The illumination device according to claim 1 , wherein the light transmission portion and the plurality of sealing portions are integrally formed by co-extrusion.

15. A lamp, comprising:

a plurality of illumination devices according to claim 1 .

16. The lamp according to claim 15 , wherein the plurality of illumination devices are combined together to form a cavity, and wherein the cavity comprises a first open end and a second open end, and the lamp further comprises: a package member, provided at the first open end; and a cover component, provided at the second open end, and through holes are oppositely provided on a plurality of end walls of the package member and the cover component to be in communication with each other.