Light emitting device, method of manufacturing light emitting device, and lighting tool for vehicle

A method of manufacturing a light emitting device,

• the light emitting device comprising:
• a first substrate, which is transparent to light;
• a plurality of conductor patterns, which are formed on a surface of the first substrate;
• a plurality of light emitting elements, which are connected to any of the conductor patterns;
• a resin layer, which holds the light emitting elements on the first substrate;
• and
• a flexible wiring substrate, which has a circuit pattern that is electrically connected with an exposed part of the conductor patterns that is exposed from an end part of the resin layer, and
• the method of manufacturing the light emitting device comprising the steps of:
• bonding the exposed part of the conductor patterns and the circuit pattern;
• winding a composite sealing material, in which a mold resin and a protective tape are stacked, around the exposed part;
• and
• thermo-compression-bonding the protective tape to the exposed part.

A lighting tool for a vehicle, comprising a light emitting device and a reflecting member,

• the light emitting device comprising:
• a first substrate, which is transparent to light, and on which a conductor pattern is formed;
• a light emitting panel, which has a resin layer that holds a light emitting element that is connected to the conductor pattern;
• a flexible wiring substrate, which has a circuit pattern that is connected to the conductor pattern;
• a mold resin, which covers a joint part of the conductor pattern and the circuit pattern, and which covers part of the light emitting panel and the flexible wiring substrate;
• and
• a protective tape, which covers the mold resin, and which is arranged in the joint part of the light emitting panel and the flexible wiring substrate;
• the light emitting device having average 90-degree peeling durability of 4 N/cm or more between the light emitting panel and the flexible wiring substrate, and maintaining a lighting state after an action of pulling the flexible wiring board vertically upward so as to reach 4 N and extending the flexible wiring substrate so that a tensile stress reaches from 4 N to 0 N, is repeated 1000 times, and the light emitting device is left for 500 hours in an environment in which temperature is 85° C. and humidity is 85%;
• and
• the reflecting member being arranged along an inner wall surface of a casing of the lighting tool for the vehicle, and being arranged on a back surface of the light emitting device,
• wherein light emitted from the light emitting device in a direction of the reflecting member is reflected by the reflecting member, passes through the light emitting device, and is emitted to outside.