JP5702203B2 - LED position lamp for vehicles - Google Patents

Description

  The present invention relates to a vehicle LED position lamp using an LED (light emitting diode) as a light source.

  For example, headlamps arranged on the left and right of the front part of the vehicle include various lamps such as a traveling beam lamp, a turn signal lamp, and a position lamp in a lamp chamber defined by an outer lens that covers the housing and its front opening. A combination type that is housed is used.

  A plurality of LEDs are often used as a light source of a position lamp provided in such a combination type headlamp (for example, see Patent Document 1). An example of a conventional LED position lamp is shown in FIG.

  3 is a side sectional view showing the configuration of a conventional LED position lamp. The illustrated LED position lamp 107 includes a plurality of LEDs 109 mounted on an LED substrate 110 as a light source. Here, the plurality of LEDs 109 are arranged in an array on the LED board 110 in the direction perpendicular to the paper surface of FIG. 3, and light emitted from each LED 109 is transmitted to the front of the vehicle (on the left side in FIG. 3). A reflector 111 for reflecting the light into a parallel light is attached.

  The reflector 111 is integrally formed in a semi-dome shape so as to open toward the front of the vehicle, and the reflection surface 111a on the inner surface forms a paraboloid of revolution. An extension 112 is disposed above the reflector 111. The reflective surface 111a of the reflector 111 is subjected to a reflection process such as aluminum vapor deposition.

JP 2010-267468 A

  However, in the conventional LED position lamp 107 shown in FIG. 3, there is nothing to block the strong light emitted from the LED 109 in the optical axis direction (directly above FIG. 3). As shown, there is a problem that the light is alternately reflected by the extension 112 and the reflector 111 and leaks into the lamp chamber 104. When such light leakage occurs, the light use efficiency of the LED position lamp 107 is lowered, and the appearance of a headlamp including the LED position lamp 107 is deteriorated.

  Accordingly, a first object of the present invention is to provide an LED position lamp for a vehicle that can prevent light leakage and increase the light utilization efficiency.

  Further, in the conventional LED position lamp 107 shown in FIG. 3, since the angle β formed by the reflecting surface 111a of the reflector 111 and the horizontal plane is an acute angle, deposition of vapor is generated in the acute angle portion by the aluminum vapor deposition applied to the reflecting surface 111a. However, there is a problem that the appearance of this portion is deteriorated and the light distribution is adversely affected.

  Accordingly, a second object of the present invention is to provide a vehicle LED position lamp that can improve the appearance and light distribution by eliminating the deposition pool on the reflecting surface of the reflector.

In order to achieve the above object, an invention according to claim 1 includes: an LED as a light source housed in a lamp chamber defined by an outer lens covering a housing and an opening of the housing; and mounted on an LED substrate; It includes a reflector that reflects emitted light as parallel light toward the front of the vehicle, an extension disposed above and below the reflector, and an inner lens fitted in an opening formed in front of the extension. In the vehicle LED position lamp
A light shielding wall that blocks light emitted from the LED in the optical axis direction is integrally formed so as to extend horizontally from the upper end of the reflector toward the front of the vehicle ,
The LED is arranged so that its optical axis is perpendicular to the LED substrate, and emits strong light along the optical axis direction,
The light shielding wall is located directly above the LED,
The inner surface of the reflector is subjected to a reflection process for forming a reflective film, and the inner surface of the light shielding wall is not subjected to a reflection process,
The light emitted toward the rear of the vehicle with respect to the optical axis of the LED is reflected by the reflector to become parallel light and is irradiated to the front of the vehicle.
Strong light emitted upward along the optical axis of the LED and light emitted forward of the vehicle are blocked by the light shielding wall,
The upper part of the light shielding wall is covered with the extension .

According to a second aspect of the invention of claim 1 Symbol mounting, characterized in that the angle of the reflecting surface forms the shielding surface and the reflector of the light shielding wall was obtuse.

According to the invention of claim 1 Symbol placement, since the light emitted from the LED to the light axis direction is intercepted by the light shielding wall formed integrally with the reflector, the light leakage is prevented utilization efficiency of light increased In addition, the appearance of the vehicular lamp including the LED position lamp is prevented from being deteriorated.

According to the second aspect of the present invention, since the angle formed by the light shielding surface of the light shielding wall and the reflecting surface of the reflector is an obtuse angle, no accumulation of vapor deposition occurs on the reflecting surface of the reflector, and the appearance and arrangement of the LED position lamps are reduced. Light performance is enhanced.

It is a front view of the headlamp provided with the position lamp for vehicles concerning the present invention. It is the sectional view on the AA line of FIG. It is a sectional side view of the conventional vehicle position lamp.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a front view of a headlamp having a vehicle position lamp according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and the headlamp 1 shown in FIG. Is to be placed. Since the configuration of the headlamp 1 is symmetrical on the left and right and the basic configuration is the same, only one headlamp 1 will be illustrated and described below.

  A headlamp 1 according to the first embodiment includes a traveling beam lamp 5 disposed at a substantially central portion in a lamp chamber 4 (see FIG. 2) defined by a housing 2 and an outer lens 3 covering a front opening of the housing 2. And a turn signal lamp 6 disposed below and an LED position lamp 7 according to the present invention.

  The housing 2 is integrally formed of a light-impermeable resin, and as shown in FIG. 2, a fitting groove 2a that opens toward the front (left side in FIG. 2) is formed on the periphery of the front end opening. ing. The outer lens 3 is integrally formed of a light-transmitting transparent resin, and a convex portion 3a that protrudes toward the rear of the vehicle is fitted in the periphery of the outer lens 3 in the fitting groove 2a of the housing 2 so that both are hot. The outer lens 3 is bonded and integrated with the housing 2 by bonding with the melt 8.

Incidentally, incandescent bulbs or LEDs are used as the light sources of the traveling beam lamp 5 and the turn signal lamp 6, and the plurality of LEDs 9 shown in FIG. 2 are used as the light source of the LED position lamp 7. Here, as shown in FIG. 1, the LED position lamp 7 is formed obliquely long along the outer inner wall shape of the housing 2, and the plurality of LEDs 9 are arranged on the LED substrate 10 in the longitudinal direction (perpendicular to the paper surface of FIG. 2). Are arranged in an array.

  Further, a reflector 11 is attached on the LED substrate 10 to reflect the light emitted from each LED 9 toward the front of the vehicle (left side in FIG. 2) to make parallel light. The reflector 11 is integrally formed in a semi-dome shape so as to open toward the front of the vehicle, and the reflecting surface 11a on the inner surface forms a paraboloid of revolution. The reflective surface 11a of the reflector 11 is subjected to aluminum vapor deposition as a reflection process.

  Further, as shown in FIG. 2, an extension 12 is accommodated in the lamp chamber 4, and an inner lens 13 is fitted into an opening 12 a formed in the extension 12 in front of the reflector 11 of the LED position lamp 7. It is arranged in the state.

  By the way, the LED 9 is arranged so that the optical axis x thereof is oriented substantially vertically, and strong light is emitted upward from the LED 9 along the optical axis x. A light shielding wall 14 for blocking this strong light is provided. It is integrally formed so as to extend substantially horizontally from the upper end of the reflector 11 toward the front of the vehicle. Here, the light shielding surface (inner surface) 14a of the light shielding wall 14 is not subjected to vapor deposition of aluminum, and the light shielding surface 14a is a non-reflective surface. Further, an angle α formed by the light shielding surface 14a of the light shielding wall 14 and the reflecting surface 11a of the reflector 11 is an obtuse angle.

  Thus, when a current is supplied from a power source (battery) (not shown) to each LED 9 of the LED position lamp 7 configured as described above, the LED 9 is activated to emit light, and the light is shown in FIG. As described above, the light is reflected forward by the reflecting surface 11a of the reflector 11 into parallel light. The parallel light is distributed by passing through the inner lens 13 and the outer lens 3, and is irradiated forward of the vehicle.

  In the above, in the LED position lamp 7 according to the present embodiment, the upward strong light emitted from the LED 9 in the direction of the optical axis x is blocked by the light shielding wall 14 formed integrally with the reflector 11. 4 is prevented from leaking light and the light use efficiency is enhanced, and the entire lamp chamber 4 of the headlamp 1 including the LED position lamp 7 is prevented from inadvertently shining. Deterioration of appearance is prevented.

  Further, in the present embodiment, the angle α formed by the light shielding surface 14a of the light shielding wall 14 and the reflecting surface 11a of the reflector 11 is an obtuse angle, so that no deposition accumulation occurs on the reflecting surface 11a of the reflector 11 and the LED position. The appearance and light distribution performance of the lamp 7 are improved.

  Furthermore, in this embodiment, since the light shielding surface 14a of the light shielding wall 14 is a non-reflective surface, strong light emitted from the LED 9 in the optical axis x direction is not used, and the lighting feeling of the LED position lamp 7 is enhanced. The effect is also obtained.

DESCRIPTION OF SYMBOLS 1 Headlamp 2 Housing 2a Housing fitting groove 3 Outer lens 3a Outer lens convex part 4 Lamp chamber 5 Traveling beam lamp 6 Turn signal lamp 7 LED position lamp 8 Hot melt 9 LED
DESCRIPTION OF SYMBOLS 10 LED board 11 Reflector 11a Reflector of reflection surface 12 Extension 12a Extension opening 13 Inner lens 14 Light-shielding wall 14a Light-shielding surface of light-shielding wall x LED optical axis α Angle formed by light-shielding surface of light-shielding wall and reflector reflection surface

Claims (2)

The LED, which is housed in the lamp chamber defined by the housing and the outer lens that covers the opening, is mounted on the LED substrate, and the light emitted from the LED is reflected as parallel light toward the front of the vehicle. In the vehicle LED position lamp configured to include a reflector, an extension disposed above and below the reflector, and an inner lens fitted in an opening formed in front of the extension ,
A light shielding wall that blocks light emitted from the LED in the optical axis direction is integrally formed so as to extend horizontally from the upper end of the reflector toward the front of the vehicle ,
The LED is arranged so that its optical axis is perpendicular to the LED substrate, and emits strong light along the optical axis direction,
The light shielding wall is located directly above the LED,
The inner surface of the reflector is subjected to a reflection process for forming a reflective film, and the inner surface of the light shielding wall is not subjected to a reflection process,
The light emitted toward the rear of the vehicle with respect to the optical axis of the LED is reflected by the reflector to become parallel light and is irradiated to the front of the vehicle.
Strong light emitted upward along the optical axis of the LED and light emitted forward of the vehicle are blocked by the light shielding wall,
An LED position lamp for a vehicle , wherein the light shielding wall is covered with the extension . Claim 1 Symbol placement of LED position lamp for a vehicle, characterized in that the angle of the reflecting surface forms the shielding surface and the reflector of the light shielding wall was obtuse.

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