Technical field
[0001] The present invention relates to the field of lamps, specifically to the technical
field of light spot adjustment in lamps, and in particular to a light spot adjustment
mechanism.
Background art
[0002] With the improvement of people's living standards, in indoor key lighting situations,
people have requirements for the shape of the light spot, in addition to the requirements
for light color and performance. In order to highlight the illumination target, lamps
are required to be able to emit light of a specific shape, and this is mainly achieved
through a spot adjustment mechanism. For example, a spot light is a kind of lamp that
people choose to improve the display effect of illuminated art paintings. By shining
the light spot on the painting, the viewer can clearly see the details of the painting.
In existing lamps for images, the shape and size of the spot is often changed by replacing
a filter. In addition, the shape of the spot can also be adjusted freely through an
adjustable light cutter.
[0003] There is currently a type of light cutter product on the market, which can change
the size and shape of the light spot by freely adjusting four cutter pieces in four
directions. For example, the utility model number
201822192654.5 discloses a spot adjustment component of a spot lamp and a spot lamp, which require
manual operation and adjustment during use. When such a lamp is installed at a high
place, it is necessary to rely on personnel to climb up a ladder and manually change
the placement of the light cutter to adjust the light spot. The accuracy is poor and
the operation is very inconvenient.
[0004] Therefore, those skilled in the art are committed to developing a light spot adjustment
mechanism to improve the user's convenience in adjusting the lamp.
Summary of invention
[0005] In view of the above-mentioned defects of the prior art, the technical problem to
be solved by the present invention is the problem of poor accuracy and convenience
of the current spot adjustment mechanism.
[0006] In order to achieve the above object, the present invention provides a light spot
adjustment mechanism, which includes at least one light cutter arranged between a
light source and an illumination surface, which is adjustably arranged in the light
emission direction of the light source and is suitable for changing the passing range
of the light; and a driving mechanism, configured for driving the movement of the
light cutter.
[0007] Further, the illumination surface is arranged in the vertical direction, the spot
adjustment mechanism is arranged close to the light source, the light emitting direction
of the light source forms an inclination angle with the horizontal direction, and
the light cutter is controlled and adjusted to make the light spot formed on the illumination
surface match the illuminated object.
[0008] Further, the driving mechanism includes a motor, and the motor is drivingly connected
to the light cutter.
[0009] Furthermore, a gear is arranged between the motor and the light cutter to achieve
transmission.
[0010] Furthermore, the light cutter includes a rack portion, and the rack portion and the
gear are engaged and connected.
[0011] In one embodiment of the present invention, multiple light spot adjustment mechanisms
are provided to form multiple light spots, and adjacent light spots are combined to
form a total light spot matching the illuminated object.
[0012] Preferably, at least one pair of light cutters is included, and the at least one
pair of light cutters relatively reciprocates in one direction under linear drive
to block or open the passing range of light.
[0013] Further, the light cutter is provided with a guide groove, the length direction of
the guide groove is consistent with the moving direction of the light cutter, a guide
block is adapted to the guide groove, and the movement of the light cutter is constrained
by the guide block.
[0014] Furthermore, there are multiple light cutters, and the plurality of light cutters
surround the passing range of light to form light-cutting holes to limit the passing
range of light.
[0015] In a preferred embodiment of the present invention, the light-cutting hole is arranged
in an inverted trapezoid shape.
[0016] Further, a base plate is included, and a plurality of light cutters are arranged
on the same side or both sides of the base plate.
[0017] Further, the light cutter is coplanar with a light-cutting surface, and the driving
mechanism adjusts the angle or distance between the light-cutting surface and the
illumination surface.
[0018] Further, the moving mode of the light cutter includes translation, rotation or a
combination thereof.
[0019] Further, the light source is an LED light source.
[0020] Since the light spot adjustment mechanism of the present invention is driven by a
motor, on the one hand, it can improve the accuracy of light spot adjustment and facilitate
fine-tuning, so that the formed light spot has better adaptability to the illuminated
object. On the other hand, it eliminates the tedious steps of manual operation and
greatly improves the convenience of adjustment operations.
[0021] The concept, specific structure and technical effects of the present invention will
be further described below in conjunction with the accompanying drawings to fully
understand the purpose, features and effects of the present invention.
Brief description of the drawings
[0022]
Figure 1 is a schematic structural diagram of a longitudinal section of the light
spot adjustment mechanism of the present invention;
Figure 2 is a schematic diagram of a usage scenario of the light spot adjustment mechanism
of the present invention;
Figure 3 is a schematic structural diagram of an embodiment of the light spot adjustment
mechanism of the present invention;
Figure 4 is a schematic structural diagram of another embodiment of the light spot
adjustment mechanism of the present invention;
Figure 5 is a schematic diagram of the internal structure of position A of the light
spot adjustment mechanism in Figure 4;
Figure 6 is a schematic diagram of the internal structure of position B of the light
spot adjustment mechanism in Figure 4;
Figure 7 is a schematic diagram of another specific usage scenario of the light spot
adjustment mechanism of the present invention.
[0023] Herein: 1 light source, 11 light spots, 2 illumination surface, 21 illuminated object,
3 light cutter, 3a first light cutter, 3b second light cutter, 3c third light cutter,
3d fourth light cutter, 31 light-cutting hole, 4 motor, 41 first motor, 42 second
motor, 5 gear, 51 first gear, 52 second gear, 6 rack part, 6a first rack part, 6b
second rack part, 6c third rack part, 6d fourth rack part, 7 base plate, 71 guide
block, 8 guide groove, 9 cover plate, X first adjustment direction, Y second adjustment
direction.
Description of embodiments
[0024] As shown in Figure 1, the light spot adjustment mechanism provided by the present
invention includes: at least one light cutter 3 arranged between the light source
1 and the illumination surface 2, which is adjustably arranged in the light emission
direction of the light source 1 and is suitable for changing The light passing range
also includes a driving mechanism for driving the movement of the light cutter 3.
[0025] As shown in Figure 2, for example, a lighting application such as a lighting lamp
is used to illustrate. The illumination object 21, such as a painting, is installed
vertically along the wall. The lamp is installed on the ceiling. The light source
1 projects light downward to the front side. The light spot adjustment mechanism is
set close to the light source 1 (not shown in the figure), an enlarged light spot
11 is formed on the illumination surface 2. The light cutter 3 is adjusted to make
the light spot 11 formed on the illumination surface 2 match the illumination object
21, and accurately illuminate the illumination object 21. Preferably, the light source
1 is an LED light source.
[0026] The driving mechanism includes a motor 4. A gear 5 is provided between the motor
4 and the light cutter 3 to achieve transmission. The motor 4 is connected to an external
drive control circuit to control the switching, forward and reverse rotation of the
motor. Motor control is a conventional technical means in this field and will not
be repeated here. In a specific implementation, the light cutter 3 includes a rack
portion 6, and the rack portion 6 meshes with the gear 5; when the motor 4 drives
the gear 5 to rotate, the gear 5 drives the rack portion 6 to move, and the rack portion
6 is engaged with the gear 5. The position of the light cutter 3 is changed.
[0027] In a specific embodiment of the present invention, as shown in Figure 3, multiple
light cutters 3 are provided, and the plurality of light cutters 3 are form a light-cutting
hole 31 by surrounding and limiting the light passage range and form a light spot
11 of a specific shape and size.
[0028] Preferably, two gears 5 for driving are provided to control two adjustment directions
respectively. Both sides of each gear 5 are transmission-connected to a rack portion
6, so that when the gear 5 rotates, the two light cutters 3 can be driven at the same
time and move relatively to change the light passing range in a blocking or opening
manner. Each pair of the two pairs of light cutters 3 moves relatively along an adjustment
direction. The two pairs of light cutters 3 are combined to form a light-cutting hole
31. The gear 5 drives the light cutter 3 to translate, thereby changing the size of
the light-cutting hole 31, so that the light spot 11 formed by the illumination can
be expanded or reduced accordingly.
[0029] For the above structure, the light cutters 3 on both sides move synchronously at
the same distance as the gear 5 rotates. Two pairs of light cutters 3 can be further
provided with overlapping motion centers, and each pair of light cutters 3 is symmetrically
moved relative to the motion center. When adjusting the projected light spot 11, the
center of the light spot 11 is aligned with the center of the illuminated object 21
along the light illumination direction, so that the light spot adjustment can be completed
symmetrically and quickly.
[0030] Due to the use of a motor drive, compared with the traditional method of manually
adjusting the light cutter, on the one hand, the accuracy of spot adjustment is improved,
fine-tuning is facilitated, and there is better adaptability to the illuminated object;
on the other hand, the cumbersome manual operation is eliminated. In this operation,
wireless control of motor operation can be used to achieve remote adjustment.
[0031] The gear 5 is used to drive and move the light cutter 3. One gear 5 can be used to
drive two light cutters 3 at the same time as mentioned above, or one gear 5 can be
used to drive a single light cutter 3, so that each can be adjusted individually.
The movement of the light cutter 3 causes more changes in the projected light spot.
In addition to using the gear 5 drive method, other linear drive methods can also
be selected, such as using a screw rod, a belt drive, etc. to convert the rotation
of the motor 4 into a linear movement of the light cutter 3.
[0032] The light cutter 3 can also adjust the light spot by being driven to rotate. For
example, the gear 5 or other connecting component may be drivingly connected to the
light cutter 3 so that each light cutter 3 can rotate along its own axis, and the
shape and size of the light-cutting hole 31 changes as each light cutter 3 rotates.
[0033] Figure 3 shows a specific embodiment of the light spot adjustment mechanism of the
present invention. It includes two motors 4 and four light cutters 3, and each motor
4 drives two light cutters 3 at the same time to adjust their positions.
[0034] In another embodiment of the present invention, the light spot adjustment mechanism
contains a base plate 7, which is mainly used for the installation and positioning
of other components. As shown in Figures 4 to 6, a first motor 41 and a second motor
42 are installed on the base plate 7. The output end of the first motor 41 is connected
to the first gear 51 to control and adjust the first light cutter 3a and the second
light cutter 3b. The first light cutter 3a includes a first rack part 6a, the second
light cutter 3b includes a second rack part 6b, the first rack part 6a and the second
rack part 6b are engaged with the first gear 51. The two sides of the gear are connected
by transmission, and the direction of the racks on both sides is parallel to the first
adjustment direction X. Similarly, the second motor 42 on the base plate 7 is drivingly
connected to the third light cutter 3c and the fourth light cutter 3d through the
second gear 52. The third light cutter 3c includes a third rack portion 6c, the fourth
light cutter 3d includes a fourth rack portion 6d, and the third rack portion 6c and
the fourth rack portion 6d are respectively engaged on both sides of the second gear
52, and the direction of the rack is parallel to the second adjustment direction Y
The rack portion 6 of the light cutter 3 can be a detachable structure, or can be
integrally formed.
[0035] Preferably, the light cutter 3 is provided with a guide groove 8, the length direction
of the guide groove 8 is along the adjustment direction of the light cutter 3, and
the guide groove 8 is equipped with a guide block 71, and the guide groove 8 moves
along the light cutter 3. It is constrained by the guide block 71 to move directionally
and the range of movement is also limited. The guide block 71 can be fixedly arranged
outside the light cutter 3, for example, formed on the base plate 7, so that the guide
groove 8 can move directionally relative to the base plate 7; the guide block 71 can
also be arranged on one of the partially overlapping light cutters 3. The light cutters
3 can move relative to each other in a directional manner.
[0036] In order to better utilize the space, two pairs of light cutters 3 are respectively
arranged on two surfaces of the base plate 7 according to the first adjustment direction
X and the second adjustment direction Y The first gear 51 and the second gear 52 are
arranged along the edges of the base plate 7, and radially set on both sides. Optionally,
a cover plate 9 is fixedly installed outside the bottom surface of the base plate
7. The cover plate 9 cooperates with the base plate 7 to accommodate the light cutter
3 on one side of the bottom surface. The motor 4 can also be fixedly installed on
the cover plate 9 or the base plate 7. In addition , each light cutter 3 can also
be arranged on the same side of the base plate 7 as shown in Figure 3.
[0037] When the lamp is installed on the ceiling, the light emitting direction of the light
source 1 is tilted downward and forward, and the lower side of the light beam from
the lamp has a longer optical path than the upper side. Since the spot adjustment
mechanism is set close to the light source 1, in the light spot 11 formed on the illumination
surface 2, the shape of the light-cutting hole 31 is not proportionally enlarged,
but is stretched and enlarged on the lower side of the light spot 11. The outer contour
of the illuminated object, such as a painting, is mostly square. In order to match
the light spot 11 on the illumination surface 2 with the painting, the shape of the
light-cutting hole 31 formed by the light cutter 3 is preferably an inverted trapezoid.
[0038] The above-mentioned light spot is formed by the light cutter surrounding the light-cutting
hole 31. In addition, when a base plate 7 is provided, a window of a specific size
can be opened in the base plate 7 to cooperate with the movement of the light cutter
3 to jointly restrict the passage of light. This can also adjust the light spot formed.
Or alternatively, the base plate 7 or the cover plate 9 do not have openings, and
can be configured as optical components such as light-transmitting plates or lenses
to further distribute light and achieve the effects of light interception and light
distribution at the same time.
[0039] Due to different illumination requirements, the light-cutting hole 31 can also be
trapezoidal, rectangular, circular or elliptical, etc., so that the light spots formed
on the projection surface have different shapes.
[0040] The invention also provides a lamp, which includes the above-mentioned light spot
adjustment mechanism. The light spot adjustment mechanism is installed in the lamp
housing and in the light emitting direction of the light source 1. According to the
aforementioned structure, each light cutter 3 is coplanar to a light plane, and a
driving motor in the lamp can be installed to make the light spot adjustment mechanism
rotate at a small angle or move back and forth relative to the illumination surface.
For example, a rotating component or a telescopic component can be used to connect
the components. The base plate may change its position, or a rotating component can
be used to rotate the entire lamp at a small angle to change the inclination of the
light-cutting surface. The above movement can be achieved by using technical means
commonly used in this field. The angle or distance between the light-cutting surface
and the illumination surface changes. Finally, preliminary adjustments to the shape
and size of the light spot can be made, and then the light spot may be adjusted through
the light cutter.
[0041] When the outline of the irradiation object 21 is too large, even though a single
light spot adjustment mechanism can provide an enlarged light spot 11, it may still
not match the outline. In this case, several of the above-mentioned mechanisms can
be used to cooperate together. As shown in Figure 7, the above-mentioned light spot
adjustment mechanisms can be provided in multiple numbers, arranged adjacently in
one direction to form multiple light spots 11, and the adjacent light spots 11 are
combined to form a total light spot that matches the illuminated object 21. For example,
multiple lamps are installed side by side, in which each light spot adjustment mechanism
provides a light spot 11, and adjacent light spots 11 are joined at the edges without
dark areas, so that the light spots 11 are connected to accommodate illuminated objects
21 with a larger length.
[0042] The preferred embodiments of the present invention are described in detail above.
It should be understood that those skilled in the art can make many modifications
and changes based on the concept of the present invention without creative efforts.
Therefore, any technical solutions that can be obtained by those skilled in the art
through logical analysis, reasoning or limited experiments based on the concept of
the present invention and on the basis of the existing technology should be within
the scope of protection determined by the claims.
1. A light spot adjustment mechanism,
characterized in that it includes:
at least one light cutter (3) arranged between a light source (1) and an illumination
surface (2), which is adjustably arranged in the light emission direction of the light
source (1) and is suitable for changing the passing range of the light; and
a driving mechanism, configured to drive the movement of the light cutter (3).
2. The light spot adjustment mechanism according to claim 1, characterized in that the illumination surface (2) is arranged in the vertical direction, the light spot
adjustment mechanism is arranged close to the light source (1), the light emission
direction of the light source (1) an inclination angle with the horizontal direction,
the light cutter (3) is controlled and adjusted to make the light spot (11) formed
on the illumination surface (2) match the illuminated object (21).
3. The light spot adjustment mechanism according to claim 1, characterized in that the driving mechanism includes a motor (4), and the motor (4) is drivingly connected
to the light cutter (3).
4. The light spot adjustment mechanism according to claim 3, characterized in that a gear (5 ) is arranged between the motor (4) and the light cutter (3) to achieve
transmission.
5. The light spot adjustment mechanism according to claim 4, characterized in that the light cutter (3) includes a rack portion (6), and the rack portion (6) and the
gear (5) are engaged and connected.
6. The light spot adjustment mechanism according to claim 2, characterized in that there are multiple light spot adjustment mechanisms to form multiple light spots
(11), and adjacent light spots (11) are combined to form a total light spot matching
the illuminated object (21).
7. The light spot adjustment mechanism according to claim 1, characterized in that it includes at least one pair of light cutters (3), and the at least one pair of
light cutters (3) relatively reciprocates in one direction under linear drive to block
or open the passing range of light.
8. The light spot adjustment mechanism according to claim 1, characterized in that the light cutter (3) is provided with a guide groove (8), the length direction of
the guide groove (8) is consistent with the movement of the light cutter (3), a guide
block (71) is adapted to the guide groove (8), and the movement of the light cutter
(3) is constrained by the guide block (71).
9. The light spot adjustment mechanism according to claim 1, characterized in that there are multiple light cutters (3), and the plurality of light cutters (3) surround
the passing range of light to form light-cutting holes (31) to limit the passing range
of light.
10. The light spot adjustment mechanism according to claim 9, characterized in that the light-cutting hole (31) is arranged in an inverted trapezoid shape.
11. The light spot adjustment mechanism according to claim 9, characterized in that it includes a base plate (7), and a plurality of light cutters (3) are arranged on
the same side or both sides of the base plate (7).
12. The light spot adjustment mechanism according to claim 1, characterized in that the light cutter (3) is coplanar with a light-cutting surface, and the driving mechanism
adjusts the angle or distance between the light-cutting surface and the illumination
surface (2).
13. The light spot adjustment mechanism according to claim 1, characterized in that the moving mode of the light cutter (3) includes translation, rotation or a combination
thereof.
14. The light spot adjustment mechanism according to claim 1, wherein the light source
(1) is an LED light source.