JPH0741047Y2 - LED light tail light / braking light fixture - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a tail light / braking light fixture of an automobile, and more particularly to a tail light / braking light fixture using an LED element as a light source.

[Prior art]

FIGS. 3 and 4 show a conventional tail light / braking light fixture 91 using this type of LED element 92 as a light source.
For example, the LED elements 92 are arranged in rows and columns, and the LED elements 92 are sealed with a housing 94 and a lens 95 to form the lamp 91.

However, in the above-mentioned conventional configuration, the central portion of the substrate 93 is lit by the lighting of the LED element 92, particularly by the continuous lighting for a long time as a tail lamp. Due to the heat generated, the temperature of the LED element 92 becomes particularly high, and the LED element 92 has a brightness characteristic that is substantially inversely proportional to the temperature rise.
The central part becomes noticeably dark and causes a problem that the viewer feels uncomfortable, and there has been a problem to solve this problem.

[Means for Solving the Problems]

As a concrete means for solving the above-mentioned conventional problems, the present invention provides a tail light / braking light fixture of an LED light source that uses a LED element mounted on a substrate as a light source and has a switching function between a tail light and a braking light, The board is divided into a switching section having the switching function and a dedicated section dedicated to tail lights, the dedicated section is arranged in the center of the lamp, and the switching sections are arranged on both upper and lower sides so as to sandwich the dedicated section. By providing a tail lamp / braking lamp of an LED light source, a partition is provided between the dedicated section and the switching section, and the partition is vertically divided into three parts. Is the solution.

【Example】

Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIGS. 1 and 2 is a tail lamp / braking lamp fixture (hereinafter abbreviated as a fixture 1) according to the present invention, and this fixture 1 uses an LED element 2 mounted on a substrate 3 as a light source. However, according to the present invention, the substrate 3 is divided into a switching section 31 for switching between a tail light and a brake light, and a dedicated section 32 dedicated to the tail light. It has been formed. Further, according to the present invention, the housing 4 is provided with the partition wall 41 therein, and the partition part 41 and the lens 5 separate the switching part 31 and the dedicated part 32 from each other and are mounted in the housing 4. At this time, the housing 4 is divided into, for example, three parts in the horizontal direction, and the dedicated portion 32
Is arranged at the center of the housing 4, and the switching portions 31 are arranged at the upper and lower ends, that is, the switching portions 31 are arranged at the upper and lower ends so as to sandwich the dedicated portion 32. Next, the operation and effect of the lighting device 1 of the present invention having the above-described structure will be described. First, the dedicated portion 32 only needs to receive the tail lamp, so that the dedicated portion 32 is provided. It is possible to reduce the number of LED elements 2 or to drive with a low current if the density is the same, the temperature rise is small, and the structure is sandwiched from above and below by the switching unit 31, and even when continuous lighting is performed, There is no reduction in the brightness of the central portion that occurs in the example. Further, in the switching unit 31, the LED elements 2 are arranged in a relatively high density in order to correspond to the purpose as a brake light, and the temperature rises even when driven as a tail light at a low current. Although it is likely to occur, when the braking light is kept on for a long time due to the improvement of the cooling effect due to the fact that it is divided into a small area by the present invention and is arranged outside the upper and lower ends of the lamp 1. However, the above-mentioned decrease in brightness does not occur. Since a large amount of heat is certainly generated when the switching unit 31 is turned on for a brake light, an LED element 2 having a high luminous efficiency per drive current, which is called a high-brightness LED, is used. By adopting the switching unit 31, it is possible to suppress heat generation and obtain a better result for the purpose. Further, with the above configuration, when the brake light is turned on, only the portion of the lamp 1 corresponding to the switching portion 31 shines with high brightness (see FIG. 1). By setting the area to the specified area, no problem occurs in practical use.

[Effect of device]

As described above, according to the present invention, it is mounted on the board.
In a taillight braking light fixture using an LED element as a light source, the board is divided into a switching part for switching the function of the taillight / braking light and a dedicated part exclusively for the function of the taillight, and the switching part is provided in the fixture. By arranging so that the dedicated portion is sandwiched between them, a dedicated portion having a low density of LED element arrangement by arranging a tail lamp function is provided in the central portion where temperature rise easily occurs, In addition, the heat conduction is reduced by providing a partition wall with the switching part that is relatively likely to cause temperature rise, thereby eliminating the illuminance drop in the central part that is likely to occur in this type of lamp and eliminating discomfort and improving practicality. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a tail light / braking light fixture for an LED light source according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a perspective view of a conventional example. Figures and 4 are IV of Figure 3.
FIG. 4 is a cross-sectional view taken along the line IV. 1 ... Tail light / braking light fixture 2 ... LED element 3 ... Substrate 31 ... Switching part 32 ... Dedicated part 4 ... Housing 41 ... Partition wall 5 ... Lens

Claims (3)

[Scope of utility model registration request] 1. A taillight / braking lamp fixture for an LED light source, which uses an LED element mounted on a substrate as a light source and has a switching function between a taillight and a braking light, wherein the substrate is a switching section having the switching function, and a taillight only And the dedicated portion is disposed in the center of the lamp, and the switching portions are disposed on the upper and lower sides so as to sandwich the dedicated portion, and between the dedicated portion and the switching portion. A tail light / braking light fixture of an LED light source, characterized in that each is provided with a partition wall and is divided into upper and lower parts. 2. The LED light source according to claim (1), characterized in that a high-intensity LED is provided in the switching section and a low-intensity LED is provided in the dedicated section. Tail light / braking light fixture. 3. The switching section and the dedicated section are provided with LEDs having substantially the same brightness level, and the arrangement density of the LEDs of the dedicated section is lower than the arrangement density of the LEDs of the switching section. LED as claimed in claim (1) of utility model registration
Tail light / braking light fixture of the light source.