Vehicle luminaire and vehicle lighting tool
A technology for lighting devices and vehicles, which is applied to lighting devices, headlights, road vehicles, etc., can solve the problems of large heat dissipation, decreased heat dissipation, affecting heat conduction, etc., and achieves the effect of improving heat dissipation.
Pending Publication Date: 2021-11-30
TOSHIBA LIGHTING & TECH CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The outer diameter of the mounting part and the outer diameter of the flange affect heat conduction, so simply reducing these dimensions may result in a decrease in heat dissipation
In addition, the thermal conductivity of high thermal conductivity resin is lower than that of metal. Therefore, if a lamp holder containing high thermal conductivity resin is used, the outer diameter of the mounting part and the outer diameter of the flange will affect the heat dissipation. will get bigger
Method used
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Embodiment Construction
[0024] Embodiments are illustrated below with reference to the drawings. In addition, in each drawing, the same code|symbol is attached|subjected to the same component, and detailed description is abbreviate|omitted suitably.
[0025] (Lighting devices for vehicles)
[0026] The vehicle lighting device 1 according to the present embodiment can be installed in, for example, an automobile, a rail vehicle, or the like. As the vehicle lighting device 1 installed in an automobile, for example, a front combination lamp (for example, a combination lamp that is appropriately combined with a daytime running lamp (DRL: Daytime Running Lamp), a position indicator light, a turn signal, etc.), can be used, for example. Rear combination lights (for example, brake lights, tail lights, turn signals, reversing lights, fog lights, etc., which are properly combined together), etc. However, the application of the vehicle lighting device 1 is not limited to this.
[0027] figure 1 It is a sche...
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Disclosed are a vehicle luminaire and a vehicle lighting tool that improve heat dissipation performance and are small-sized. The vehicle luminaire according to an exemplary embodiment includes: a socket that includes a flange, a mounting part that is provided on one side of the flange, and a thermal radiation fin that is provided on a side of the flange which is opposite to the mounting part side, and contains a highly heat conductive resin; a light-emitting module that is provided in an end of the mounting part on a side opposite to the flange side, and includes at least one light-emitting element; and a heat transfer part that is provided between the mounting part and the light-emitting module, and contains a metal. An expression of 2.5 [watt] <= W <= 5.5 [watt], an expression of 15 [watt / (m*K)] <= WT <= 25 [watt / (m*K)], and an expression of 40 [1 / K] <= (A1 - A2) * WT / W <= 90 [1 / K] are satisfied. W [watt] represents electric power that is applied to the light-emitting module. WT [watt / (m*K)] represents heat conductivity of the highly heat conductive resin. A1 [mm] represents a dimension of the flange in a direction orthogonal to a central axis of the vehicle luminaire. A2 [mm] represents a dimension of the mounting part in a direction orthogonal to the central axis of the vehicle luminaire.
Description
technical field [0001] Embodiments of the present invention relate to a vehicle lighting device and a vehicle lamp. Background technique [0002] A lighting device for a vehicle includes a lamp holder and a light emitting module including a light emitting element. The lamp holder includes a flange, a mounting portion provided on one side of the flange, and a cooling fin provided on a side of the flange opposite to the mounting portion side. The light emitting element is provided at an end portion of the mounting portion opposite to the flange side. In such a lighting device for a vehicle, the heat generated in the light emitting diode is mainly transferred to the flange via the mounting portion. A part of the heat transferred to the flange is released to the outside through the housing of the vehicle lamp to which the vehicle lighting device is mounted. And, another part of the heat transferred to the flange is transferred to the heat sink and released from the heat sink ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F21S43/14F21S41/151F21S43/19F21S41/143F21S41/19F21S45/48F21S45/50F21Y103/10F21W107/10
CPCF21S43/14F21S41/151F21S43/195F21S41/143F21S41/192F21S45/48F21S45/50F21Y2103/10F21W2107/10F21S41/141F21S45/47F21W2102/30F21S43/37F21W2103/10F21W2103/55F21S43/31F21S41/321
Inventor 日野清和
Owner TOSHIBA LIGHTING & TECH CORP