JP2011148346A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system in which the reduction of number of parts and reduced thickness can be attained and irradiation areas and direction of radiation can be adjusted freely without receiving restriction to the installation position of LEDs onto an LED substrate. <P>SOLUTION: The lighting system 1 includes: the LED substrate 4, on which a plurality of LEDs 3a-3c are mounted; an inner lens 6, which controls the distribution of light irradiated from the LEDs 3a-3c; and a housing 2, which stores the LED substrate 4 and the inner lens 6. In this system, the LED substrate 4 (or the inner lens 6) is supported movably to the housing by an aiming mechanism. Specifically, a plurality of rotatable aiming adjustment screws 7 are provided rotatably on the housing 2 and the aiming adjustment screws 7 are screwed to and passed through the LED substrate 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device such as a vehicle room lamp using a plurality of LEDs as a light source.

  For example, Patent Document 1 proposes a room lamp installed on the ceiling of a vehicle that can change the irradiation direction by rotating a light source unit including a light source and a lens. In such a room lamp, the irradiation direction can be freely changed by supporting the light source unit rotatably about two rotation axes orthogonal to each other.

JP 2009-037992 A

  However, the above-described conventional room lamp requires a mechanism for rotating the light source unit around two rotation axes orthogonal to each other, so that the number of parts increases and the thickness increases and the overall size increases. There was a problem.

  In the case of a type using a plurality of light sources, only light distribution to a predetermined place is possible, and there are restrictions on the shape and movable area of the movable parts. There was also a problem that was limited.

  The present invention has been made in view of the above-mentioned problems, and the intended process is to reduce the number of parts and reduce the thickness of the LED, and to irradiate the LED without being limited by the installation position on the LED substrate. An object of the present invention is to provide an illumination device capable of freely adjusting the area and the irradiation direction.

  In order to achieve the above object, an invention according to claim 1 includes an LED substrate on which a plurality of LEDs are mounted, an inner lens that controls light distribution of light emitted from the LED, and these LED substrate and inner lens. In the lighting device including a housing for housing, the LED substrate and / or the inner lens is supported by an aiming mechanism so as to be movable with respect to the housing.

  According to a second aspect of the present invention, in the first aspect of the invention, a plurality of rotatable aiming adjustment screws are rotatably provided in the housing, and the aiming adjustment screws are threadedly inserted into the LED substrate or the inner lens. It was made to be characterized.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a switch mechanism that selectively emits light from the plurality of LEDs is provided.

  According to the first and second aspects of the invention, various light distributions can be obtained by turning the aiming adjusting screw to move the LED substrate or the inner lens with respect to the housing, and the irradiation region and the irradiation direction can be freely set. Can be adjusted. For example, by rotating all the aiming adjustment screws by the same amount in the same direction and moving the LED substrate or inner lens in parallel with respect to the housing, the irradiation area can be enlarged or reduced. The irradiation direction can be changed by tilting the LED substrate or the inner lens with respect to the housing with different amounts of rotation. In this case, since it is not necessary to rotate the LED substrate or the inner lens about two axes, the structure is simplified and the number of parts is reduced, and the apparatus can be thinned because a large thickness is not required. In addition, since the irradiation area can be freely adjusted by the aiming mechanism, the installation position of the LED on the LED substrate is not limited.

  According to the invention described in claim 3, if a plurality of LEDs are selectively emitted by a switch mechanism, for example, if one LED emits light, it can function as a spot lamp, and if a plurality of LEDs emit light simultaneously. Can illuminate a wide area.

It is a sectional side view which shows the state at the time of LED board fall of the illuminating device which concerns on Embodiment 1 of this invention. It is a top view of the illuminating device which concerns on Embodiment 1 of this invention. It is a sectional side view which shows the state at the time of LED board raising of the illuminating device which concerns on Embodiment 1 of this invention. It is a sectional side view which shows the state at the time of the inner lens raising of the illuminating device which concerns on Embodiment 2 of this invention. It is a sectional side view which shows the state at the time of the inner lens board | substrate descending of the illuminating device concerning Embodiment 2 of this invention. It is a sectional side view which shows the state at the time of the inner lens horizontal of the illuminating device which concerns on Embodiment 2 of this invention. It is a sectional side view which shows the state at the time of the inner lens inclination of the illuminating device which concerns on Embodiment 2 of this invention.

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

<Embodiment 1>
1 is a side sectional view showing a state of the lighting device according to Embodiment 1 of the present invention when the LED substrate is lowered, FIG. 2 is a plan view of the lighting device, and FIG. 3 is a state when the LED substrate of the lighting device is raised. FIG.

  The lighting device 1 according to the first embodiment is a room lamp installed on the ceiling of a vehicle, and three LEDs 3a, 3b, and 3c are mounted as light sources in a bottomed cylindrical housing 2 that opens upward. The disk-shaped LED substrate 4 is supported and accommodated by the aiming mechanism so as to be movable up and down. A lens 5 is disposed at the center of the bottom of the housing 2, and the lens 5 is subjected to appropriate light distribution processing such as lens cutting.

  Regarding the fixing of the adjusting screw 7, the LED substrate 4 and the inner lens 6, first, the adjusting screw 7 and the bottom of the housing 2 are fixed with, for example, an E-ring, and then a hole is provided so that the adjusting screw 7 can be inserted. An adjustment screw 7 is inserted through the LED substrate 4 and the inner lens 6. Then, the LED substrate 4 and the inner lens 6 are fixed to the adjustment screw 7 with a resin member or the like, and the position of the LED substrate 4 and the inner lens 6 is moved by turning the adjustment screw 7.

  By the way, three LEDs 3a to 3c are mounted on the LED substrate 4 at an appropriate interval in the lateral direction (left and right direction in FIG. 1), and these LEDs 3a to 3c are covered from below by a transparent inner lens 6. It has been broken. The aiming mechanism has four aiming adjustment screws 7 that penetrate the bottom of the housing 2 from below to vertically upward. As shown in FIG. 2, the four aiming adjustment screws 7 have the same circumference. The LED board 4 is threadedly inserted into each aiming adjusting screw 7 and arranged at an equal angular pitch (90 ° pitch). Although not shown, the illumination device 1 according to the present embodiment is provided with a switch mechanism that selectively emits light from the three LEDs 3a to 3c.

  Thus, in the illuminating device 1 configured as described above, when the three LEDs 3a to 3c are driven simultaneously, the light L1, L2, and L3 from each of the LEDs 3a to 3c is distributed by the inner lens 6 and the lens 5. Are controlled to irradiate circular spot areas A1, A2 and A3 as shown in the figure, and illuminate a maximum irradiation area Amax enveloping these spot areas A1 to A3 as a whole.

  By the way, by turning the four aiming adjustment screws 7 of the aiming mechanism by the same amount (the same number of times) in the same direction, the LED substrate 4 moves up and down while keeping the horizontal in the housing 2. Are screwed in the same number of times and the LED substrate 4 is lowered as shown in FIG. 1, the spot areas A1 to A3 spread left and right, and the maximum irradiation area Amax expanded. Conversely, when the four aiming adjusting screws 7 are loosened the same number of times and the LED board 4 is raised as shown in FIG. 3, the spot areas A1 to A3 approach each other on the left and right, and partly overlaps. The maximum irradiation area Amax is reduced.

  In the state shown in FIG. 1 or FIG. 3, when, for example, only one LED 3a is caused to emit light by a switch mechanism (not shown), only one spot area A1 is illuminated by the light L1, and the illumination device 1 functions as a spot lamp. To do.

  As described above, according to the illumination device 1 according to the present embodiment, various light distributions can be obtained by turning the aiming adjustment screw 7 of the aiming mechanism to move the LED substrate 4 up and down relative to the housing 2. In addition, the irradiation area can be freely adjusted by enlarging or reducing the maximum irradiation area Amax. In this case, since it is not necessary to rotate the LED substrate 4 about two axes, the structure is simplified and the number of parts is reduced, and the lighting device 1 can be thinned because a large thickness is not required.

  And when using the illuminating device 1 as a vehicle room lamp like this Embodiment, even if it is a case where the installation height in a vehicle interior changes, the same arrangement | positioning is carried out by height adjustment of the LED board 4 by an aiming mechanism. Since the light can be obtained, the lighting device 1 can be installed regardless of the vehicle type.

  Moreover, according to the illuminating device 1 which concerns on this Embodiment, since an irradiation area | region can be freely adjusted with an aiming mechanism as mentioned above, the installation position on LED board 4 of LED3a-3c receives a restriction | limiting. There is nothing.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.

  4 is a side sectional view showing a state of the lighting device according to Embodiment 2 of the present invention when the inner lens is raised, FIG. 5 is a side sectional view showing a state of the lighting device when the inner lens substrate is lowered, and FIG. FIG. 7 is a side sectional view showing a state of the lighting device when the inner lens is horizontal, and FIG. 7 is a side sectional view showing a state of the lighting device when the inner lens is tilted. In these figures, FIGS. The same reference numerals are given to the same elements as those described above, and description thereof will be omitted below.

  In the illumination device 1 according to the present embodiment, the LED substrate 4 on which the three LEDs 3a to 3c are mounted is fixed so as to cover the upper surface opening of the housing 2, and the LED substrate 4 and the bottom of the housing 2 are fixed. The four aiming adjusting screws 7 of the aiming mechanism are rotatably inserted between them.

  An inner lens 8 is accommodated in the housing 2, and the four aiming adjusting screws 7 are screwed through the inner lens 8.

  Thus, in the illuminating device 1 configured as described above, when the three LEDs 3a to 3c are simultaneously driven, the light L1, L2, and L3 from the LEDs 3a to 3c are distributed by the inner lens 8 and the lens 5, respectively. Are controlled to irradiate circular spot areas A1, A2 and A3 as shown in the figure, and illuminate a maximum irradiation area Amax enveloping these spot areas A1 to A3 as a whole.

  By the way, when the four aiming adjustment screws 7 of the aiming mechanism are turned in the same direction by the same amount (the same number of times), the inner lens 8 moves up and down while maintaining the horizontal in the housing 2, but the four aiming adjustment screws 7 When the inner lens 8 is raised as shown in FIG. 4 with the same number of times, the spot areas A1 to A3 spread left and right and the maximum irradiation area Amax is expanded. Conversely, when the four aiming adjusting screws 7 are screwed in the same number of times and the inner lens 8 is raised as shown in FIG. 5, the spot areas A1 to A3 approach each other on the left and right, and a part thereof overlaps. The maximum irradiation area Amax is reduced.

  Also, as shown in FIG. 6, the inner lens 8 is kept in a horizontal position as shown in FIG. 7, for example, as shown in FIG. If the angle is inclined by a predetermined angle, the irradiation direction can be changed, and the center of the maximum irradiation area Amax can be inclined with respect to the vertical.

  In the state shown in FIGS. 4 to 7, for example, when only one LED 3a is caused to emit light by a switch mechanism (not shown), only one spot area A1 is illuminated by the light L1, and the illumination device 1 functions as a spot lamp. To do.

  As described above, according to the illumination device 1 according to the present embodiment, various light distributions can be obtained by turning the aiming adjustment screw 7 of the aiming mechanism to move the inner lens 8 up and down relative to the housing 2. In addition, the irradiation area can be freely adjusted by enlarging or reducing the maximum irradiation area Amax. Further, the irradiation direction can be changed by tilting the inner lens 8 with respect to the horizontal by making the rotation direction or the rotation amount of the aiming adjustment screw 7 different from each other. In this case, since it is not necessary to rotate the inner lens 8 about two axes, the structure is simplified and the number of parts is reduced, and the lighting device 1 can be thinned because a large thickness is not required.

  And when using the illuminating device 1 as a vehicle room lamp like this Embodiment, even if it is a case where the installation height in a vehicle interior changes, the same arrangement | positioning is carried out by height adjustment of the inner lens 8 by an aiming mechanism. Since the light can be obtained, the lighting device 1 can be installed regardless of the vehicle type.

  In the first and second embodiments, four aiming adjustment screws 7 are used for adjusting the LED substrate 4 and the inner lens 8, but in the present invention, each of the LED substrate 4 and the inner lens 6 is three-dimensional. In order to move either the LED substrate 4 or the inner lens 8, at least three aiming adjustment screws 7 are sufficient.

  Moreover, according to the illuminating device 1 which concerns on this Embodiment, since an irradiation area | region can be freely adjusted with an aiming mechanism as mentioned above, the installation position on LED board 4 of LED3a-3c receives a restriction | limiting. There is nothing.

  In the first and second embodiments, either the LED board 4 or the inner lens 8 is moved up and down with respect to the housing 2 by turning the aiming adjusting screw 7, but as the third embodiment, the LED board 4 And the inner lens 8 are provided with an aiming adjusting screw, and the rotation direction or amount of the aiming adjusting screw 7 for adjusting each of the LED substrate 4 and the inner lens 8 is made different, thereby making the LED substrate 4 and the inner lens 8 different. Can be moved up and down with respect to the housing 2, or the LED substrate 4 and the inner lens 8 are tilted at different angles, so that it is possible to irradiate an area that cannot be illuminated in the first and second embodiments. The device becomes possible. As in the first and second embodiments, in this embodiment, when the lighting device 1 is used as a vehicle room lamp, the inner lens by the aiming mechanism is used even when the mounting height in the passenger compartment changes. Since the same light distribution can be obtained by adjusting the height of 8, the lighting device 1 can be installed regardless of the vehicle type.

  The present invention is applicable to lighting devices used in interiors and exteriors of automobiles, aircraft, trains, ships, buildings, houses, offices, various facilities, etc., and the lighting devices include seats, ceilings, doors, It can also be installed in places where thickness is restricted, such as in walls or other products.

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Housing 3a-3c LED
4 LED board 5 Lens 6 Inner lens 7 Aiming adjustment screw 8 Inner lens A1 to A3 Spot area Amax Maximum irradiation area L1 to L3 Light

Claims (3)

In an illuminating device comprising an LED substrate on which a plurality of LEDs are mounted, an inner lens that controls light distribution of light emitted from the LED, and a housing that accommodates the LED substrate and the inner lens,
An illumination device, wherein the LED substrate and / or the inner lens is supported by an aiming mechanism so as to be movable with respect to a housing.   The lighting device according to claim 1, wherein a plurality of rotatable aiming adjustment screws are rotatably provided in the housing, and the aiming adjustment screws are threadedly inserted into the LED substrate or the inner lens. The illumination device according to claim 1, further comprising a switch mechanism that selectively emits light from the plurality of LEDs.

Images