Lighting device

1. A lighting device comprising:

a lightguide panel having an end face that is a light-receiving surface; and

a light-emitting device that emits light toward the end face of the lightguide panel, the light-emitting device including:

a light-emitting element; and

a first light-transmissive member located between the end face of the lightguide panel and the light-emitting element, the first light-transmissive member having a plurality of protrusions on a surface thereof, wherein

at least one of the plurality of protrusions is in direct contact with the end face of the lightguide panel.

2. The lighting device according to claim 1 , wherein: the first light-transmissive member includes a plurality of particles and a light-transmissive layer; and the protrusions is formed with at least a portion of a surface of each particle covered by the light-transmissive member.

3. The lighting device according to claim 2 , wherein the particles each have a spherical shape.

4. The lighting device according to claim 2 , wherein a ratio of a mean thickness of the light-transmissive layer with respect to a mean particle size of the particles is 0.1 or more and 0.9 or less.

5. The lighting device according to claim 2 , wherein a mean particle size of the particles is 1 μm or more and 30 μm or less.

6. The lighting device according to claim 2 , wherein a volume percent of the particles in the first light-transmissive member is 10% or more and 90% or less.

7. The lighting device according to claim 2 , wherein a number density of the particles on a surface of the first light-transmissive member is 10/mm 2 or more and 1000/mm 2 or less.

8. The lighting device according to claim 1 , wherein the light-emitting device further includes a second light-transmissive member containing a fluorescent substance between the light-emitting element and the first light-transmissive member.

9. The lighting device according to claim 8 , wherein the second light-transmissive member has a thickness greater than the first light-transmissive member.

10. The lighting device according to claim 8 , further comprising an adhesive member located between the light-emitting element and the second light-transmissive member, wherein the adhesive member covers at least a portion of a side surface of the light-emitting element.

11. The lighting device according to claim 1 , wherein the light-emitting device includes a light-reflective member covering a circumference of the light-emitting element.

12. The lighting device according to claim 1 , wherein:

the first light-transmissive member includes a plurality of particles and a light-transmissive layer; and

the light-transmissive layer is made of silicone resin.

13. The lighting device according to claim 1 , further comprising a wiring substrate, wherein the light-emitting element is mounted on the wiring substrate.

14. The lighting device according to claim 1 , wherein the light-emitting element includes projecting electrodes as external connection terminals.

15. The lighting device according to claim 1 , wherein the end face of the lightguide panel has a greater width in a height direction than a width of the surface of the first light-transmissive member which faces the end face of the lightguide panel.

16. The lighting device according to claim 1 , wherein the light-emitting device further comprises a light-reflective member, and a second light-transmissive member between the light-emitting element and the first light-transmissive member, and wherein the light-reflective member covers a circumference of the first light-transmissive member.