I added emitted light but also in this image there is a transparency on glass material. The light source comes from inside of the box. Do you know how can l reach that realistic light material?
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Maybe add the emit light inside the box, then make the sign semi transparent?
are you doing it with Cycles or Eevee?
l am doing on Cycles
You could play with a mix of transparency and opacity, use a Wave Texture node to create the vertical lines, at the end put one or two lights into it, or a cube with emission:
Here I put inside a cube with a volumetric emission:
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Thanks! This is so useful. How can l add text on the surface with keeping the materials?
You need to create a PNG image with an image editor software like photoshop/krita, and keep the background transparent (alpha 0%):
Then in your material you create an Image Texture, load the picture, mix it with the existing nodes through a Mix Shader, and use the Image Texture alpha output as a factor in the Mix Shader:
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