Lamp

Abstract

To provide a lamp that can form a desired peak illuminance, can change the direction of light emission without causing glare, and further has a slim and compact head or reflector.SOLUTION: The lamp comprises a light source capable of emitting light, a support structure 1 that supports the light source, and an optical component 17 capable of changing the characteristics of the light emitted from the light source. The support structure 1 is capable of rotating both the light source and the optical component 17 about a first axis X1, and the light source and the optical component 17 are capable of moving linearly relative to each other along a second axis X2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to lighting lamps such as desk lamps and floor-standing lamps.

Background Art

[0002] Lamps such as desk lamps and floor-standing lamps have various structures and functions according to their uses and requirements. Usually, such lamps are configured to be able to focus the irradiated light to illuminate a specific area, and for the convenience of use, it is necessary to enable the user to change the direction of the light. Although it is also possible to irradiate the desired area by moving or rotating the lamp itself to change the irradiation direction of the light, the movement or rotation of the lamp itself can not only cause inconvenience to the user, but may also not be easy due to spatial limitations.

[0003] To solve such problems, various methods have been introduced that can change the direction of light irradiated from a light source. As an example, a method of configuring a head on which the light source is installed or a reflector that reflects the light diverging from the light source to be tiltable is a well-known method. However, when tilting the head or reflector in a desired direction, there is a problem that the peak illuminance of the light decreases and the position of the peak illuminance also remains at approximately 1 / 3 of the target movement distance. In addition, when tilting by rotating the head or reflector, the light source may directly enter the user's field of view and induce glare. As another example, a method of two-dimensionally moving a reflector that reflects light on a plane has been introduced, but this method has a problem that the size of the reflector becomes very large depending on the size and arrangement of the light source. For example, when a large number of light sources (e.g., LEDs) are used, a reflector surrounding the area where these light sources are arranged is required, and a large reflector is required to enable a desired movement on a plane while the reflector surrounds the area where a large number of light sources are arranged. In order to reduce the size of the reflector, a large number of small light sources can be arranged and separate reflectors can be arranged for each light source to form an array-shaped light source, but in this case, there is a problem that the length or width of the entire area where the light sources are arranged only increases, and multiple shadows are generated by the multiple light sources, resulting in a decrease in the quality of the light.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by the present invention is to provide a lamp that can form a desired peak illuminance, can change the irradiation direction of light without inducing glare, and further has a slim and compact head or reflector.

Means for Solving the Problem

[0006] A lamp according to an embodiment of the present invention includes a light source configured to be able to emit light, a support structure that supports the light source, and an optical member configured to be able to change the characteristics of the light emitted from the light source. The support structure is configured to be able to rotate the light source and the optical member together about a first axis, and the light source and the optical member are configured to be able to move linearly relative to each other along a second axis.

[0007] The optical member may be formed such that the length in a direction perpendicular to the direction of the second axis is smaller than the length in the direction of the second axis.

[0008] The light source may be formed such that the length in a direction perpendicular to the direction of the second axis is smaller than the length in the direction of the second axis.

[0009] The support structure may include a first support base extending along the first axis and a second support base fastened to the first support base and extending along the second axis.

[0010] The optical member may be a reflector or an optical lens configured to be able to reflect the light emitted from the light source.

[0011] The reflector may include a pair of first reflecting surfaces arranged to face each other along the direction of the second axis and a pair of second reflecting surfaces arranged to face each other along a direction perpendicular to the direction of the second axis, and the first reflecting surface may have a further erected form so as to be closer to the surface perpendicular to the surface on which the light source is installed than the second reflecting surface.

Advantages of the Invention

[0012] According to the present invention, an optical member such as a reflector is configured to be rotatable about a single axis together with a light source, and at the same time, it is configured to be capable of reciprocating linear movement in one direction, so that the length of the optical member in a direction perpendicular to the direction of the reciprocating linear movement can be formed to decrease.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary knowledge in the technical field to which the present invention belongs can easily implement it. However, the present invention can be embodied in various different forms and is not limited to the described embodiments.

[0015] As illustrated in FIG. 1, the lamp according to an embodiment of the present invention can be a desk lamp. Hereinafter, the embodiment of the present invention will be described by taking a desk lamp as an example. However, the lamp according to other embodiments of the present invention may be other types of lamps such as a floor-standing lamp.

[0016] Referring to FIG. 1, the lamp according to an embodiment of the present invention includes a light source 20 that emits light and a support structure 1 that supports the light source 20. The support structure 1 can include a base 11, a vertical support 13 that extends upward on the base 11, and a horizontal support 15 that extends horizontally from the vertical support 13.

[0017] The base 11 can be formed to have a flat bottom so as to be disposed on the upper surface of a structure such as a desk and support the entire lamp. The vertical support 13 can be fastened to the base 11 and extend upward from the base 11. For example, the vertical support 13 can have a long rod form that extends in a substantially vertical direction.

[0018] The horizontal support 15 can be fastened to the vertical support 13 and extend horizontally. For example, the horizontal support 15 can have a long rod form that extends in a substantially horizontal direction that is substantially perpendicular to the extension direction of the vertical support 13.

[0019] The light source 20 is installed on the horizontal support 15. For example, as illustrated in FIG. 6, the light source 20 can include LED elements 21, 22, 23 that emit lights of different color temperatures respectively, and the LED elements 21, 22, 23 can be installed on a circuit board 25. As illustrated in FIGS. 1, 3, and 4, the light source 20 can be installed on the bottom surface of the end of the horizontal support 15. In this embodiment, the light source 20 is supported by the combination of the vertical support 13 and the horizontal support 15. However, in other embodiments, it can also be configured such that a single support can support the light source 20.

[0020] An optical member 17 is provided for changing the characteristics of the light emitted by the light source 20. The optical member 17 can be any optical element for changing or improving any light characteristics such as reflection, diffusion, and refraction of light. FIG. 1 illustrates a case where the optical member 17 is a reflector that reflects light. In other embodiments, the optical member 17 may be an optical lens having functions such as focusing or diffusing light. Hereinafter, a case where the optical member is a reflector will be described as an example.

[0021] The reflector 17 can be formed to surround the region where the light source 20 is disposed and reflect the light emitted from the light source and make it travel in a desired direction. Referring to FIGS. 3, 4, and 5, the reflector 17 can include reflecting surfaces 171 and 172 for reflecting light. The reflector 17 can be fastened to the horizontal support base 15 so as to surround the region where the light source 20 is disposed, and the reflecting surfaces 171 and 172 can have a form that expands substantially downward. The reflector 17 can be fastened to the horizontal support base 15, or when the light source 20 is formed as a separate light source module from the horizontal support base 15 and installed on the horizontal support base 15, it can also be fastened to the light source module.

[0022] The support structure 1 is configured such that the light source 20 and the reflector 17 can be rotated together about the first axis X1. For example, referring to FIGS. 1 and 2, due to the behavior of the vertical support 13 and the horizontal support 15, the light source 20 and the reflector 17 can be rotated in the rotation direction M2 about the first axis, the vertical axis X1. As a result, the light source 20 and the reflector 17 can be rotated along a locus in an arc shape about the first axis X1. For example, in order to embody such behavior of the light source 20 and the reflector 17, the horizontal support 15 is configured to be rotatable about the first axis X1. More specifically, the vertical support 13 is configured to be rotatable about the rotation direction M1 about the first axis X1, and by the horizontal support 15 being fixedly fastened to the vertical support 13, the horizontal support 15 can be rotated about the first axis X1. On the other hand, in another embodiment of the present invention, the vertical support may be fixedly fastened to the base, and the horizontal support may be configured to be rotatable about the first axis.

[0023] On the other hand, the light source 20 and the reflector 17 are configured to be relatively movable with respect to each other along the second axis X2. As an example for embodying the relative movement between the light source 20 and the reflector 17, either one of the light source 20 and the reflector 17 may be installed to maintain a fixed position, and the other one may be configured to be relatively movable with respect to each other along the second axis X2. As another example, both the light source 20 and the reflector 17 may be configured to be movable independently or dependently with respect to each other. Hereinafter, the case where the light source 20 is installed to maintain a fixed position and the reflector 17 is movable will be described as an example.

[0024] The light source 20 can be installed to maintain a fixed position on the horizontal support base 15, and the reflector 17 can be movably fastened to the horizontal support base 15 so that its relative position with respect to the light source 20 can be changed. For example, the reflector 17 can be fastened to the horizontal support base 15 so as to be movable along the linear movement direction M3 along the second axis X2. At this time, the second axis X2 can be the longitudinal axis of the horizontal support base 15. For example, the reflector 17 can be fastened to the horizontal support base 15 through a linearly movable fastening structure such as a rail structure. Referring to FIG. 1, a lampshade 18 surrounding the reflector 17 can be provided. The lampshade 18 can be fixed to the horizontal support base 15 and can surround the periphery of the reflector 17 and have an open side for the passage of light. Referring to FIGS. 1 and 2, since the light source 20 and the reflector 17 can rotate together in the rotation direction M2 and are relatively movable in the linear movement direction M3 with respect to the reflector 17 and the light source 20, the irradiation direction of the light emitted from the light source 20 can be varied so that the irradiation area of the light can move over a certain area on the plane.

[0025] Referring to FIG. 6, the reflector 17 can be formed such that the length d1 in the direction of the second axis X2 is greater than the width d2 in the direction perpendicular thereto (the vertical direction in FIG. 3). As a result, the tip 173 of the reflecting surface 171 surrounding the region where the light source 20 is disposed can also be configured to have a length and a width in a ratio similar to the ratio of the two lengths d1 and d2. Accordingly, the tip 173 of the reflecting surface 171 of the reflector 17 can linearly move along the second axis X2 while surrounding the region where the light source 20 is disposed and can have a maximally slim shape. Thereby, the length of the reflector 17 in the direction perpendicular to the length direction of the horizontal support base 15 can be reduced, which enables the slim shape of the reflector 17. As shown in FIG. 6(a), when the light source 20 is located in the middle of the region formed by the tip 173 of the reflecting surface 171, there is a margin space for the movement of the reflector 17 on both sides of the light source 20, and the reflector 17 can linearly move along the second axis X2 as shown in FIGS. 6(b) and 6(c) due to the margin space. The direction of the light emitted from the light source 20 changes according to the position of the reflector 17 along the direction of the second axis X2. At this time, as shown in FIG. 6, the light source 20 can include LEDs 21, 22, 23 that emit light of different color temperatures, and the number of each LED 21, 22, 23 can be appropriately selected as needed.

[0026] The reflector 17 includes a pair of first reflecting surfaces 171 arranged to face each other along the second axis X2, and a pair of second reflecting surfaces 172 arranged to face each other along a direction perpendicular to the second axis X2. According to an embodiment of the present invention, in order to enable the maximum illuminance position of the illumination area to move by a desired distance proportional to the movement amount of the reflector 17 when the reflector 17 linearly moves, the first reflecting surface 171 is formed to have a more upright form than the second reflecting surface 172. That is, referring to FIGS. 3 and 4, the first reflecting surface 171 has a form that is erected so as to be close to the direction perpendicular to the surface on which the light source 20 is installed, and the second reflecting surface 172 has a gentle form with its lower end further moving outward. Due to such forms of the first reflecting surface 171 and the second reflecting surface 172, the maximum illuminance position can move well when the reflector 17 moves.

[0027] According to an embodiment of the present invention, the direction of light is configured to be variable by two behaviors, namely, the simultaneous rotation behavior of the light source 20 and the reflector 17, and the relative linear behavior of the light source 20 and the reflector 17. By the simultaneous rotation behavior of the light source 20 and the reflector 17, the direction of light can move along a locus in an arc shape centered on the first axis X1, and by the relative linear behavior of the light source 20 and the reflector 17, the direction of light can linearly move along the second axis X2. Due to such two behaviors, the direction of light can move over a certain area. In particular, by enabling the reflector 17 and the light source 20 to perform relative linear movement in both directions along the second axis X2 with respect to each other, the reflector 17 can be relatively long formed so as to secure a sufficient space for movement in the direction of the second axis X2, and can be minimized to a size capable of surrounding the light source 20 in the direction perpendicular to the second axis X2 where no relative movement occurs. As a result, since the length in the direction perpendicular to the second axis X2 can be reduced, a slim-shaped reflector 17 can be realized. That is, in the present invention, by making the relative behavior of the reflector 17 and the light source 20 occur only in one direction, namely, the direction of the second axis X2, the reflector 17 has a relatively large length in this moving direction for securing a space for movement, but has a relatively small length that is minimized to approximate the area occupied by the light source in the remaining directions. Different from the present invention, when the reflector is configured to be movable in two directions perpendicular to each other on a two-dimensional plane, the reflector has to secure a sufficient space for movement in each of the two directions perpendicular to each other, so the reflector has to have a circular shape, and thereby the size has to be increased unavoidably.

[0028] FIG. 7 is a drawing showing a change in the relative position between a light source and a reflector by changing the position of the reflector of a lamp according to another embodiment of the present invention. Referring to FIG. 7, in the present embodiment, the region occupied by the light source 30 is also formed in a slender form in which the length d4 in the direction perpendicular to the linear movement direction of the reflector 19, that is, the direction of the second axis X2, is smaller than the length d3 in the direction perpendicular thereto. As a result, the reflecting surface 191 of the reflector 19 and its tip 193 can also have a slender form in which the length in the direction perpendicular to the second axis X2 is further reduced. As a result, the reflector 19 can have a slender form in which the length d6 in the direction perpendicular to the length d5 in the direction of the second axis X2 is further reduced. As a result, the reflector 19 can move between the positions shown in FIGS. 7(a), 7(b), and 7(c) while surrounding the light source 30, whereby the reflector 19 can have a slender form in which the length in the direction perpendicular to the linear movement direction, that is, the direction of the second axis X2, is further reduced.

[0029] Although the embodiments of the present invention have been described above, the scope of the rights of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the claims also belong to the scope of the rights of the present invention.

Industrial Applicability

[0030] The present invention relates to a lamp and can be applied to a lighting device, so it has industrial applicability.

Explanation of Reference Numerals

[0031] 1... Support structure, 13... Vertical support base, 15... Horizontal support base, 17... Optical member, 20... Light source.

Claims

1. A light source configured to be able to emit divergent light, A support structure for supporting the light source, An optical member configured to be able to change the characteristics of the light emitted from the light source, comprising, The support structure includes a first support base extending along a first axis and a second support base fastened to the first support base and extending along a second axis, The support structure is configured to be able to rotate the light source and the optical member together about the first axis, The light source and the optical member are configured to be able to linearly move relative to each other along the second axis, and the characteristics of the light emitted from the light source are changed by the change in the relative position of the light source and the optical member due to the linear movement, a lamp.

2. The lamp according to claim 1, wherein the optical member is formed such that the length in a direction perpendicular to the direction of the second axis is smaller than the length in the direction of the second axis.

3. The lamp according to claim 2, wherein the light source is formed such that the length in a direction perpendicular to the direction of the second axis is smaller than the length in the direction of the second axis.

4. The lamp according to any one of claims 1 to 3, wherein the optical member is a reflector configured to be able to reflect the light emitted from the light source, or an optical lens having a function of focusing or diffusing the light emitted from the light source.

5. The optical member is the reflector, The reflector includes a pair of first reflecting surfaces arranged to face each other in the direction of the second axis and a pair of second reflecting surfaces arranged to face each other in a direction perpendicular to the direction of the second axis, The light source is surrounded by the pair of first reflecting surfaces and the pair of second reflecting surfaces, The lamp according to claim 4, wherein the first reflecting surface has a form further erected so as to be closer to the surface on which the light source is installed in a direction perpendicular to the direction of the second reflecting surface.

Images