a light source, wherein the light source comprises multiple LED modules;

a light housing, wherein the light housing has an internal container and a light opening, wherein the light source is placed inside the internal container, wherein a light of the multiple LED modules escapes from the light opening, wherein at least a portion of the light housing is made with a plastic material mixed with an anti-fire material, wherein the anti-fire material increases a melting temperature for deforming the light housing;

a light passing cover for covering the light opening, wherein the light passing cover allows the light of the multiple LED modules to pass through; and

a connector module with a fixing connector and an elastic unit, wherein the fixing connector is fixed to the light housing, wherein the elastic unit is used for fastening the light housing to an installation platform when no external force by a user is applied on the elastic unit, wherein when an external force by a user for detaching the lighting apparatus from the installation platform is applied on the elastic unit, the elastic unit changes a spanning diameter to release the light housing from the installation platform, wherein the light source comprises a light source plate mounted with LED modules, wherein the light source plate has a metal layer, wherein there is an auxiliary metal connector connecting the light source plate with the connector module so that even when the light housing is melt, the connector module is still holding the light source plate.