Lighting apparatus and lighting system

A lighting system, characterized by comprising a splicing piece and at least two lighting apparatuses, wherein diffusion shields and end covers of two adjacent lighting apparatuses are aligned with each other, the lighting apparatus comprising:

• a housing;
• a light source module, provided in the housing;
• a diffusion shield, connected to the housing and spaced apart from the light source module;
• and
• an end cover, provided on two ends of the housing and connected to the diffusion shield,
• wherein the diffusion shield comprises a first diffusion wall and a second diffusion wall positioned on two sides of the first diffusion wall, wherein the second diffusion wall further comprises a light shading area and a light transmitting area both in a light emitting direction X, the light transmitting area connected to the first diffusion wall, the light shading area positioned on a side of the light transmitting area distal to the first diffusion wall, light of the light source module emitting from the first diffusion wall and the light transmitting area;
• the light shading area and the light transmitting area are parallel to an extending direction of the light source module;
• the light shading area is configured to allow reflection of light from the light source module, and along the light emitting direction X, a height h1 of the light shading area is greater than a height h2 of the light transmitting area, wherein the height of the light shading area satisfies that H×½≤h1≤H×¾, H indicating a height of the second diffusion wall;
• and the first diffusion wall and the second diffusion wall are formed integrally;
• the end cover is provided perpendicular to the diffusion shield substantially;
• along a height direction of the second diffusion shield, the end cover comprises an end-cover light transmitting area;
• the end-cover light transmitting area comprises a light emitting area out of a plane Y on which the light source module is positioned;
• and the end-cover light transmitting area is used to diffuse the light emitted from the light source module;
• the lighting apparatus further comprises a splicing holder;
• the splicing holder is provided on two ends of the housing, provided with stepped height difference, used to connect with a splicing piece;
• the end cover is connected to the splicing holder;
• and the end cover abuts the diffusion shield to form an enclosed space with the diffusion shield and the housing to accommodate the light source module;
• the splicing holder comprises a connecting surface connected to the housing and a splicing surface, wherein the splicing surface is connected to the end cover and a surface of the splicing surface is aligned with a lateral surface of the end cover:
• the connecting surface is positioned on a side of the splicing surface distal to the end cover;
• there is height difference between the connecting surface and the splicing surface;
• and the connecting surface is used for splicing with the splicing piece;
• the lighting apparatus further comprises a circuit board, wherein the circuit board is positioned in the housing and electrically connected to the light source module;
• the splicing surface comprises an electrical terminal A and a mechanical terminal, wherein a number of the mechanical terminals is greater than that of the electrical terminals A;
• and the mechanical terminals are spaced apart around the electrical terminal A, the mechanical terminal used for mechanically connecting to a terminal of the splicing piece, the splicing piece configured to be fixed to the lighting apparatus and electrically connect another adjacent lighting apparatus, an end of the electrical terminal A electrically connected to the circuit board, an opposite end of the electrical terminal A relatively exposed for connecting with electrical terminal B on the splicing piece;
• a side of the housing opposite to the diffusion shield is provided with a sliding groove, the sliding groove extending in a first direction;
• a top surface of the sliding groove is higher than the connecting surface;
• the sliding groove is used for snap-fitting with an external supporting plate;
• and a height of a bottom surface of the sliding groove is higher than that of a portion of both a display and buttons exposed relative to the housing;
• the lighting apparatus also comprises two first magnetic bodies;
• each first magnetic body is fixed on top of the connecting surface adjacent to the splicing surface;
• the first magnetic body is parallel to the light source module;
• a surface of the first magnetic body is used to fix with an external structure;
• a side of the connecting surface facing the splicing surface is further provided with a guiding block;
• the guiding block extends along a direction of the height difference between the connecting surface and the splicing surface;
• and the guiding block is used for snap-fitting with a groove of the splicing piece;
• there are four mechanical terminals and one electrical terminal A, wherein the four mechanical terminals are provided equally spaced apart around the electrical terminal A as a center, and the guiding block as well as two of the mechanical terminals are provided coaxially;
• the lighting apparatus further comprises a second magnetic body, wherein the second magnetic body comprises a magnetic main body and snap-fit edges positioned on two sides of the magnetic main body:
• the snap-fit edge is used for detachably snap-fitting with the sliding groove;
• and a side of the magnetic main body is correspondingly connected to the first magnetic body, while an opposite side of the magnetic main body is used for magnetic fixation with an external structure.