JP4783804B2 - Vehicle lighting system - Google Patents

Description

  The present invention relates to an illumination device for a vehicle that uses an LED as a light source, and can be used, for example, in the field of interior lighting of an automobile.

  An illuminating device is installed in the truck box of the truck, and a fluorescent lamp is used as the light source. Fluorescent lamps have problems such as slow lighting, short life, miniaturization, and difficulty in thinning. In addition, when the truck is a refrigerated vehicle or a freezer vehicle, the inside of the box-type cargo bed is low in temperature, so that there is a problem that the lighting of the fluorescent lamp after power-on is further delayed.

  In recent years, lighting devices using LEDs having many features such as low power consumption, long life, and fast lighting have attracted attention.

The illumination device using LED as a light source has the following problems.
(1) Since the LED is small, many LEDs must be arranged at intervals in order to ensure continuous light having the same length as the fluorescent lamp. However, in this case, light is interrupted by the interval, and continuous light cannot be obtained, resulting in sparse illumination.
(2) The visibility is low depending on the angle because the illumination range is narrow.
(3) In order to obtain continuous light, the interval between the LEDs must be narrowed and arranged in the nectar, which increases the cost because many LEDs are required.
(4) In order to widen the illumination range, it is necessary to arrange a plurality of LEDs. In this case as well, the number of LEDs used is increased, resulting in an increase in cost and it is difficult to reduce the size of the illumination device.

  SUMMARY OF THE INVENTION The present invention provides a vehicle lighting device that uses an LED to widen the illumination range by diffusing or reflecting light emitted from the LED and extending it in the front-rear and left-right directions.

Vehicle lighting device of the present invention, in the vehicle lighting device the light source is provided in the casing to mount the indoor riding was the case comprises a housing capable of accommodating space of the light source, opening the front of the housing space is Yes, there is a support edge to the outer peripheral portion of the accommodation space, wherein the light source is a LED, LED is arranged in two or more spaced substrate, the light exit side case LE D on the substrate within the housing space of the case The transparent plate is disposed on the support edge of the case from the outside of the LED, covers the opening of the case, and the transparent plate receives the LED light emitted from the LED. is intended to widen the arrangement direction of the LED, side LED elongated inner surface ridges in the array direction of the is provided within the LED facing out of the transparent plate, said inner surface protrusion is a direction in two or more strips intersecting the axial direction Provided. Elongated outer surface ridge is provided in a direction crossing the arrangement direction of the LED on the outer side surface which is a surface opposite to the inner surface of the light plate, said outer surface ridge is provided Nijo least in a direction crossing the axial direction It is a thing.

In vehicle lighting device of the present invention, the transparent plate and one plate of the vehicle lighting device, provided with elongated protrusions on the arrangement direction of the LED on the side surface within the LED facing Nijo or more of the light transmitting plate Further, two or more elongated outer surface protrusions may be provided on the outer surface of the translucent plate opposite to the inner surface in the direction intersecting the LED arrangement direction. In vehicle lighting device of the present invention, the two sheets of outer plates disposed on the plate and its outer among which is disposed opposite to the LED light transmissive plate, said inner plate, LED array in its inner side surface an elongated ridge or two rows in a direction, assume the outer surface of the outer plate is flat with no projections, the elongate ridge and the outer plate, in a direction crossing the arrangement direction of the LED on its outer side surface two comprising more columns, inner side surface of the outer plate can be made flat without ridges.

The vehicle lighting device of the present invention has the following effects.
(1) Since the ridges are formed on the inner and outer surfaces of the translucent plate, the light emitted from the light source is diffused or / and reflected by the ridges to spread, the illumination area is increased, and the light intensity is dispersed. It also becomes light that is kind to the eyes.
(2) Since the protrusion on one surface of the translucent plate is elongated in the direction intersecting with the protrusion, the light emitted from the light source diffuses in the elongated direction of the protrusion (light source arrangement direction) or / In addition, the intermittent light that is reflected and emitted at intervals is linear or elongated continuous light, and the illumination range is widened to improve the visibility.
(3) Since the protrusions on the other surface of the translucent plate are elongated along the arrangement direction of the light sources, the light diffused or reflected by the protrusions on one surface also intersects with the arrangement direction of the light sources. It spreads and the spread is further expanded.
(4) Even if it is installed in a low temperature room like a box-type cargo bed of a freezer or refrigerated car, it does not slow down like a fluorescent lamp, and it turns on instantly when the power is turned on. The efficiency of loading and unloading work is improved.

The present invention also has the following effects.
Two or more elongated ridges are provided in the light source arrangement direction on one of the inner and outer surfaces of one light-transmitting plate, and two or more elongated ridges are provided in the direction intersecting the light source arrangement direction on the other surface. The dot-like intermittent light becomes linear or elongated continuous light simply by arranging the light-transmitting plate on the front surface of the light source arranged at intervals.

(Embodiment 1)
An example of an embodiment of a vehicle lighting device of the present invention will be described with reference to FIG. As shown in FIG. 1, in the vehicle lighting device according to the first embodiment, two or more LEDs 3 are arranged in the housing space 2 of the case 1 at an interval, and the translucent plate 4 is placed on the case 1 from above. It is covered.

  The case 1 is horizontally long, a housing space 2 is formed at the center thereof, and a support edge 5 that supports the light-transmitting plate 4 is formed one step lower at the outer peripheral upper edge. The accommodating space 2 is wide and deep enough to accommodate a large number of LEDs 3. The case 1 can be made of various materials such as resin, metal, and wood. The case 1 can also be a side wall, a ceiling, or the like of a building or a car carrier. Case 1 may have any shape and size.

  The LED 3 is previously modularized by being attached to the elongated substrate 6 with a gap. This LED module 7 is arranged and fixed in the accommodation space 2 and electrically wired. Although the number of LED modules 7 is one in FIG. 1, two or more LED modules 7 may be arranged and fixed in the accommodation space 2 as necessary. In this case, although LED3 of each row | line | column can be arrange | positioned side by side, it can also arrange | position by shifting. The number of LEDs 3 to be mounted and the mounting interval of each LED module 7 can be arbitrarily determined.

  The translucent plate 4 has translucency through which the light of the LED 3 can be transmitted, and a glass plate, an acrylic resin plate, and other resin plates can be used. The translucent plate 4 in FIG. 1 is a single sheet, and a plurality of elongated protrusions 10 are provided in parallel on the inner surface 8 on the LED 3 side and the outer surface 9 on the opposite side of the LED 3. The protrusions 10 on the inner surface 8 are elongated in the arrangement direction of the LEDs 3, and a plurality of ridges 10 are formed in parallel to the side of the arrangement direction of the LEDs 3. The protrusions 10 on the outer surface 9 are elongated in a direction intersecting with the arrangement direction of the LEDs 3, and protrude in parallel with several stripes in the arrangement direction of the LEDs 3. The cross-sectional shape of these protrusions 10 is a semicircular arc as shown in FIGS. 1A to 1C, and the diameter (thickness), the interval, the number, etc. can be determined according to the application. The thickness, interval, etc. of the protrusions 10 on the inner surface 8 and the outer surface 9 may be the same or different. The elongated direction of the protrusions 10 on the inner surface 8 and the outer surface 9 may be opposite to that shown in the figure. The translucent plate 4 is disposed and fixed on the support edge 5 of the case 1. In this case, either the inner surface 8 or the outer surface 9 may be arranged facing the LED 3 side. The cross-sectional shape of the ridge 10 may be a shape other than that shown in the figure, for example, it may be a triangle or a polygon having a square shape or more. In that case, if necessary, the top of the corner is slightly arcuate. It can also be rounded by molding (chamfering).

  According to the inventor's research, the light emitted from the LED 3 irradiated toward the horizontally elongated ridge 10 shown in FIG. 3A mainly crosses the horizontally elongated direction of the ridge 10 (FIG. 3A). The light (intermittent light) from a large number of LEDs 3 that is diffused or reflected in the vertical direction of the light and spreads in that direction and is irradiated toward the vertically elongated protrusion 10 shown in FIG. 3D is mainly diffused or reflected in the direction intersecting the longitudinal direction of the ridge 10 (left and right direction in FIG. 3B: lateral direction) and spreads laterally in that direction. When a translucent plate 4 having a horizontally long ridge 10 formed on the outer surface 9 and having a vertically long ridge as shown in FIG. 3B is arranged on the front surface of the LED array, as shown in FIG. It becomes horizontally long and vertically elongated light (continuous light). Contrary to this, even if the translucent plate 4 in which the horizontally elongated protrusions 10 are formed on the outer surface 9 and the elongated protrusions are formed on the inner surface 8 is arranged on the front surface of the LED array, it is almost the same as the above case. A long and narrow elongated light (continuous light) was obtained.

(Embodiment 2)
1 (a) to 1 (c) is a single plate, the transparent plate 4 is a set of two as shown in FIGS. 2 (a) to 2 (c). Two sheets can be stacked and fixed on the case 1 in a vertically stacked manner. Each translucent plate 4 is provided with a protrusion 10 on one surface and a flat surface on the other surface. The protrusions 10 of one light transmitting plate 4 are elongated in the same direction as the LED 3 arrangement direction, and the protrusions 10 of the other light transmission plate 4 are elongated in the direction intersecting the LED 3 arrangement direction. The protrusions 10 of the two translucent plates 4 are also semicircular in cross section as shown in FIGS. 2 (a) to 2 (c), and their thickness, interval, and number are also determined according to the application. Can do. The pair of translucent plates 4 can be stacked with the LED 3 side (inner side) and the outer side of the translucent plate 4 outside, but as in the case of the single translucent plate 4, the elongated direction of the ridges 10. When the transparent plate 4 is aligned with the LED 3 in the same direction as the arrangement direction of the LEDs 3 (inward), and the light transmission plate 4 in the direction in which the elongated direction of the protrusion 10 intersects the arrangement direction of the LED 3 is arranged outside, the LED 3 It was easy for the intermittent light to become continuous light.

(Embodiment 3)
The translucent plate 4 of the above embodiment is flat on both sides, but the translucent plate 4 used in the present invention may be other than that, for example, in the case of a single plate, both the front and back sides. Alternatively, either one of the surfaces may be formed in a slightly arcuate shape (gradual saddle shape of the arc). In this case, the ridges 10 are formed on the arcuate surface. When there are two light-transmitting plates 4, the front and back surfaces of each light-transmitting plate 4 or either one of the surfaces may be formed in a slightly arc shape (a shape having a gentle arc).

(Usage example of vehicle lighting device 1)
An example of the use of the vehicle lighting device of the present invention is shown in FIG. In this use example, the lighting device is attached to an indoor wall surface. In FIG. 4 (a), a part of the wall 11 is recessed, and the vehicle lighting device shown in FIG. In FIG. 4A, the outer surface 9 of the translucent plate 4 is flush with the surface of the wall 11. However, the outer surface 9 of the translucent plate 4 may be recessed by one step from the surface of the wall 11, on the contrary. It can be made to protrude one step. When attaching to the inside of the box-type cargo bed of a truck, it can also be attached to the surface of the wall 11 without denting a part of the wall 11. In this case, the vehicle lighting device projects outward from the surface of the wall 11.

(Reference example)
FIG. 4B shows a reference example of the vehicle lighting device of the present invention, in which the LED module 7 is directly mounted in the housing portion 12 of the wall 11 without using the case 1 and the front surface thereof is translucent. The plate 4 is arranged and fixed. Also in this case, the translucent plate 4 may be one piece or a set of two pieces.

  The vehicle lighting device according to the present invention is not limited to the interior of a car box-type cargo bed or a house, but also at any desired location such as a ship, an airplane, a factory, a building, a public facility, or an illuminated signboard, for example, a wall or a ceiling. Etc. can be attached.

BRIEF DESCRIPTION OF THE DRAWINGS It shows an example of embodiment of the illuminating device for vehicles of this invention, Comprising: (a) is an exploded explanatory drawing of the case and LED which accommodated LED, (b) is the front sectional drawing, (c) Is a side sectional view thereof. An example of the translucent board of the illuminating device for vehicles of this invention is shown, Comprising: (a) is the perspective view, (b) is the front sectional drawing, (c) is the side sectional drawing. (A) is plane explanatory drawing which shows the spreading | diffusion of light at the time of arrange | positioning the translucent board provided with two or more elongate protrusions along LED arrangement direction, (b) is elongate in the direction which cross | intersects LED arrangement direction. An explanatory plan view showing the spread of light when a translucent plate provided with a plurality of ridges is arranged, (c) is a plurality of elongated ridges along the LED arrangement direction on the inner surface, and the LED arrangement direction on the outer surface Plane explanatory drawing which shows the breadth of the light at the time of arrange | positioning the translucent board provided with two or more elongate protrusions in the direction which cross | intersects. The example of use of this invention is shown, Comprising: (a) is a perspective view at the time of attaching the illuminating device for vehicles to a wall surface with a case, (b) is the case at the time of attaching an LED module directly to a wall without a case FIG.

1 Case 2 Storage space 3 LED
4 translucent plate 5 support edge 6 substrate 7 LED module 8 inner surface 9 outer surface 10 ridge 11 wall 12 accommodating portion

Claims (3)

In a vehicle lighting device in which the light source is provided in the casing to mount the indoor ride was
The case includes an accommodation space capable of accommodating a light source, has an opening on the front surface of the accommodation space, and has a support edge on an outer peripheral portion of the accommodation space,
The light source is an LED;
Two or more LEDs are arranged at intervals on the substrate, and the substrate is arranged in the housing space of the case with the light emission side of the LED facing the opening of the case,
A translucent plate is disposed on the support edge of the case from the outside of the LED, and covers the opening of the case.
The transparent plate is intended to widen the LED light emitted from the LED to the array direction of the LED, the elongated interior surface protrusion is provided on the LED and the arrangement direction of the LED on the side surface opposing inner of the transparent plate, the inner surface ridge is direction provided Nijo more intersecting the axial direction, an elongated outer surface ridges in a direction crossing the arrangement direction of the LED on the outer side surface which is a surface opposite to the inner surface of said transparent plate Provided, the outer surface ridges are provided two or more in the direction intersecting the axial direction,
A vehicle lighting device characterized by the above. The vehicle lighting device according to claim 1,
Transparent plate is the single plate, LED and an elongated ridge in the arrangement direction of the LED on the side surface opposing inner equipped above Nijo, the surface opposite to the inner surface of the translucent plate of the light transmitting plate The outer surface is provided with two or more elongated outer surface protrusions in a direction crossing the LED arrangement direction,
A vehicle lighting device characterized by the above. The vehicle lighting device according to claim 1,
The translucent plate is an inner plate arranged facing the LED, and an outer plate arranged on the outer side thereof,
Wherein the plate is provided with its inner elongated ridges in the arrangement direction of the LED on the side surface or two rows, the outer surface of the outer plate is a plane having no ridges,
The outer plate has an outer side surface comprising LED array direction and the elongated projections or two rows in a direction intersecting the inner surface of the skin is a plan without ridges,
A vehicle lighting device characterized by the above.

Images