JP2010182660A - Led table lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED table lamp which reduces tired feeling of eyes, and at the same time, provides sophisticated design. <P>SOLUTION: The LED table lamp includes a lamp unit arranged on a receiving base through a pole, and illuminates a working plane. The lamp unit includes: an upper lamp cover; a lower lamp cover, which is assembled with the upper lamp cover and is connected to an upper end of the pole, and includes a through hole formed on a cross section; a heat sink which is installed on an inside of the upper lamp cover and of which mounting ends projecting downward along both ends are extended; a light guide plate which has a certain thickness, is arranged on a lower surface of the heat sink with a reflecting tape attached on one surface thereof; and LED substrates which are attached to inner surfaces of the mounting ends on both ends of the heat sink and on which a plurality of LED lamps as light sources are mounted so that the LED lamps correspond to both sides of the light guide plate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an LED (light emitting diode) stand, and more specifically, a light guide plate having a certain thickness is disposed inside upper and lower lamp covers, and a plurality of light guide plates are provided on both side surfaces of the light guide plate. By arranging the LED board with the LED lamp and forming the lamp unit, the light guide plate realizes indirect lighting to reduce eye fatigue, and at the same time slim the lamp unit thickness and refine it It relates to an LED stand that allows us to provide different designs.

In general, a desk lamp is used to illuminate a limited area in an office or home, and is widely used mainly for precision work and learning.
Incandescent lamps and fluorescent lamps were mainly used for conventional desk lamps, but recently, they are environmentally friendly and provide almost the same level of light as natural light, while also enabling low power consumption and long-term use. A wavelength (RGB) lamp has been developed and applied (Patent Document 1).

  Such conventional desk lamps are only provided with the ability to simply illuminate a limited area for user vision protection and other purposes, satisfying the consumer's purchasing desire for diversity. Has its limits.

  Recently, the desk lamp has been improved to an LED stand so that it is closer to sunlight and various colors can be applied as a light source to create a variety of atmospheres, and at the same time, the light intensity can be adjusted freely. There is a tendency to research and develop a new concept stand that is not affected by electromagnetic waves and also has a power saving effect.

  However, the conventional LED stand is a direct lighting system in which an LED board equipped with a plurality of LED lamps as a light source is installed inside the lamp cover and irradiated through a protective glass. Since light is almost directly irradiated onto the work surface, high illuminance can be obtained with low power, but it is difficult to obtain uniform illuminance throughout the room, glare is likely to occur, and shadows due to light appear strongly There is a problem.

  In addition, the conventional LED stand is installed with the LED lamp directly inside the lamp cover through the LED substrate, so the lamp unit is made thicker than necessary, and there is a limit to sophisticated design There were also problems.

  In addition, the conventional LED stand has a problem that it is difficult to control various positions of the lamp unit because the lamp unit installed on the cradle with a pole is applied with a structure of 3 joints or less. Yes.

Japanese Patent Laid-Open No. 6-76958

  Therefore, the present invention has been devised in order to solve the problems and the like of the conventional technology as described above, and the object of the present invention is to maintain a certain level of reflective tape attached to one surface. A light guide plate having a thickness is disposed inside the upper and lower lamp covers, and an LED substrate having a plurality of LED lamps is disposed so as to correspond to both side surfaces of the light guide plate to form a lamp unit. It is to provide an LED stand that realizes an indirect illumination by the light guide plate to reduce eye fatigue while minimizing the thickness of the lamp unit and giving a sophisticated design. .

  A further object of the present invention is to install the lamp unit on a cradle via a pole, but a two-joint structure is applied between the lamp unit and the pole through a tilting pivot means. An LED stand is provided between the pole and the cradle by applying a two-joint structure through a rotating pivot means, so that various positions of the lamp unit can be easily controlled.

In order to solve the above problems, the LED stand of the present invention is an LED stand that illuminates a work surface by installing a lamp unit on a cradle via a pole.
The lamp unit is connected to an upper lamp cover, an upper end of the pole in an assembled state with the upper lamp cover, a lower lamp cover having a through hole on a cross section, and an inner side of the upper lamp cover. A heat sink that is installed and has a mounting end extending downwardly extending along both side edges, and a constant thickness guide disposed on the lower surface of the heat sink with a reflective tape attached to one side. And an LED substrate attached to inner surfaces of mounting ends on both sides of the heat sink and mounted with the LED lamps so that a plurality of LED lamps as light sources correspond to both side surfaces of the light guide plate.

  The LED stand further includes a protective sheet installed corresponding to the through hole of the lower lamp cover, and a prism sheet installed below the light guide plate to refract and disperse the light of the LED lamp.

  The light guide plate is made of a rectangular acrylic plate material, and one surface of the light guide plate is silk screen printed with a paint, and a reflective tape is bonded to the printed surface with an adhesive.

  The LED lamp includes a predetermined number of red, green, blue, and white LED elements that can be adjusted in color temperature and hue amount that are lit by a control unit.

  The ramp unit and the pole are connected with a two-joint structure via a tilting pivot means, and the pole and the cradle are connected with a two-joint structure via a rotating pivot means.

  Further, an upper tilting bush groove is formed at the rear center of the upper lamp cover, and a lower tilting bush groove is formed at the rear center of the lower lamp cover corresponding to the upper tilting bush groove. The tilting pivot means is inserted into the upper part of the pole and fastened, and an upper pivot body in which a pivot ring is formed at the center of the upper end, and upper parts on both rear sides so as to correspond to both sides of the pivot ring. A pivot housing is formed, a lower pivot case in which a lower tilting groove is formed at the front center, and an upper tilting groove corresponding to the lower tilting groove is fastened to an upper portion of the lower pivot case. Upper pivot case formed and upper pivot housings on both sides The upper pivot screw is passed through and fitted into the pivot ring and fastened to the upper pivot nut on the opposite side, and the lower pivot case and the upper pivot body are hinged, and one side of the upper and lower tilting grooves The other side is installed in the upper and lower tilting bush grooves formed on the upper and lower lamp covers so that the upper and lower lamp covers can be rotated with respect to the upper and lower pivot cases. And a tilting bush to be installed.

  Further, the rotary pivot means is inserted and fastened to the lower part of the pole, and a lower pivot body having a pivot ring formed at the center of the lower end, and lower pivots on both sides of the upper part so as to correspond to both sides of the pivot ring. A rotating body formed on the outer side of the upper receiving cover of the cradle and formed to be rotatable in correspondence with the rotating body inside the upper receiving cover; Rotating bushes to which the rotating body is fastened, the lower pivot housings on both sides and the pivot rings are fitted and fastened to the lower pivot nuts on the opposite side, and the rotating body and the lower pivot body are hinge-fastened. A lower pivot screw, and the lower pivot screw is installed inside the pivot ring; It is disposed inside the bot body, the other end; and a torsion spring for providing a restoring support force on the pawl is supported on one side of the rotating body.

  According to the LED stand of the present invention as described above, in constituting the lamp unit, a light guide plate of a certain thickness with a reflective tape attached to one surface is applied, and an LED substrate on which a plurality of LED lamps are mounted is described above. Sophisticated slim type by arranging the light guide plate to correspond to both sides of the light guide plate to reduce the feeling of eye fatigue by implementing indirect illumination by the light guide plate and at the same time minimize the overall lamp unit thickness There is an effect to embody the design.

  Furthermore, a tilting pivot means and a rotating pivot means are applied as means for connecting the lamp unit and the pole, and the cradle and the pole, respectively, thereby forming a total four-joint structure. It is possible to make adjustments over a wide range, and this has the effect of producing an atmosphere that satisfies the diverse needs of the user.

It is an assembly perspective view of the LED stand which concerns on embodiment of this invention. It is a disassembled perspective view of the lamp unit applied to the LED stand which concerns on embodiment of this invention. FIG. 4 is an exploded perspective view of a tilting pivot unit applied to the LED stand according to the embodiment of the present invention. It is a disassembled perspective view of the rotation pivot means applied to the LED stand which concerns on embodiment of this invention. It is a disassembled perspective view of the cradle applied to the LED stand which concerns on embodiment of this invention. It is a partial expanded sectional view of the light-guide plate applied to the LED stand which concerns on embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an assembled perspective view of an LED stand according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a lamp unit applied to the LED stand according to an embodiment of the present invention.
3 and 4 are exploded perspective views of the tilting pivot means and the rotation pivot means applied to the LED stand according to the embodiment of the present invention, and FIG. 5 is an LED stand according to the embodiment of the present invention. It is a disassembled perspective view of the cradle applied.

  As shown in FIG. 1, the LED stand 1 according to this embodiment basically includes a cradle 3, a pole 5, and a lamp unit 7. That is, the lamp unit 7 is installed on the cradle 3 via the pole 5 so as to illuminate the work surface.

  First, as shown in FIG. 5, the cradle 3 is composed of an upper receiving cover 11 and a lower receiving cover 13 and is assembled to each other. Inside the upper and lower receiving covers 11 and 13, a circuit board 15 ( PCB) etc. and receiving plate 17 etc. are built in and assembled together.

Further, a display window 19 is attached to the outer surface of the upper receiving cover 11 so as to correspond to the one circuit board 15 as shown in FIG.
As shown in FIG. 3, the pole 5 is formed of a hollow square tube material, and is formed so as to install a wire (not shown) through the inside.

As shown in FIG. 2, the lamp unit 7 includes an upper lamp cover 21 and a lower lamp cover 23.
The upper lamp cover 21 has a plurality of heat radiation holes 25 formed in the longitudinal direction on the cross section thereof, and an upper tilting bush groove 27 is formed at the rear center.
The lower lamp cover 23 is connected to the upper end portion of the pole 5 in an assembled state with the upper lamp cover 21, and a square through hole 29 is formed on the cross section thereof, and the rear center thereof. Corresponding to the upper tilting bush groove 27, a lower tilting bush groove 31 is formed.

Inside the upper and lower lamp covers 21, 23, a heat sink 33, a light guide plate 35, an LED substrate 37, etc. are installed.First, the heat sink 33 is a square heat radiating plate made of aluminum, A mounting end 39 projecting downward along the both side ends is extended.
The light guide plate 35 is disposed in contact with the lower surface of the heat sink 33 with the reflective tape 41 attached to the upper surface thereof.

Such a light guide plate 35 is made of a rectangular transparent acrylic plate material having a constant thickness.
That is, as shown in FIG. 6, the light guide plate 35 is silk screen printed with a white paint on one surface thereof, and the reflective tape 41 is adhered to the printed surface with an adhesive P2.

In this way, when the white paint layer P1 is printed on the light guide plate 35 by silk screen printing, when the reflective tape 41 is adhered on the light guide plate 35, light is scattered by the air layer that can be generated finely. This will prevent the phenomenon that the light looks particularly dark at that part.
Of course, it is preferable that the reflective tape 41 has the same white color as the white paint layer P1, and the adhesive P2 is transparent.

  The LED substrate 37 is configured by mounting a plurality of LED lamps 43 as light sources along the longitudinal direction thereof, and is attached to the inner surfaces of the mounting ends 39 on both sides of the heat sink 33 via heat-resistant tape 45, respectively. The At this time, the LED lamps 43 are attached so as to correspond to both side surfaces of the light guide plate 35.

  Here, the LED lamp 43 includes a predetermined number of red, green, blue, and white LED elements that can be adjusted by a control unit (not shown) to be adjusted in color temperature and hue amount.

  That is, each of the red, green, and blue LED elements is turned on in accordance with a PWM (Pulse Width Modulation) signal applied by mode control of a control unit (not shown) to adjust the color temperature, and The LED element is turned on in accordance with a PWM control signal applied by mode control of the control unit, and the brightness of the illumination is adjusted to implement illumination according to modes such as a learning mode, a sensitivity mode, and a mood mode.

  A protective sheet 47 is installed corresponding to the through-hole 29 of the lower lamp cover 23, and a prism for refracting and dispersing the light of the LED lamp 43 between the light guide plate 35 and the protective sheet 47. A sheet 49 is interposed.

  On the other hand, the lamp unit 7 and the pole 5 described above are connected in a two-joint structure by a tilting pivot means 8, and the pole 5 and the cradle 3 are connected in a two-joint structure by a rotary pivot means 9. It will embody a 4-joint stand.

  Here, as shown in FIG. 3, the tilting pivot means 8 is fastened by inserting an upper pivot body 51 into the upper portion of the pole 5. The upper pivot body 51 has a pivot ring 53 integrally formed at the center of the upper end thereof, and is formed hollow.

  Upper and lower pivot cases 55 and 57 are connected to the upper pivot body 51 via upper pivot screws 59, and the lower pivot case 57 is arranged on both rear sides so as to correspond to both sides of the pivot ring 53. Upper pivot housings 61 are respectively formed, and a lower tilting groove 63 is formed at the front center thereof.

  Further, the upper pivot case 55 is fastened to the upper portion of the lower pivot case 57, and an upper tilting groove 65 corresponding to the lower tilting groove 63 is formed at the front center thereof.

  That is, in the state where the upper pivot housing 61 on both sides of the lower pivot case 57 assembled with the upper pivot case 55 is fitted to the pivot ring 53 of the upper pivot body 51 with a washer W interposed, the upper pivot screw 59 Is inserted through the upper pivot housing 61 and the pivot ring 53 on both sides and fastened to the upper pivot nut 67 on the opposite side, and the lower pivot case 57 and the upper pivot body 51 are hingedly fastened. .

  At this time, in each of the upper and lower tilting grooves 63 and 65 of the upper and lower pivot cases 55 and 57, a tilting bush 69 is installed on one side, and the other side of the tilting bush 69 is on the upper and lower sides. The upper and lower lamp covers 21 and 23 are rotatably installed with respect to the upper and lower pivot cases 55 and 57 installed in the upper and lower tilting bush grooves 27 and 31 formed in the lamp covers 21 and 23. Become.

  As a result, the lamp unit 7 is installed at the upper end of the pole 5 by the tilting pivot means 8, and can be hinged in one direction with respect to the pole 5 and can be tilted in the direction of rotation. A structure will be formed.

  On the other hand, as shown in FIG. 4, the rotary pivot means 9 is fastened with a lower pivot body 71 inserted into the lower portion of the pole 5. The lower pivot body 71 is integrally formed with a pivot ring 73 at the center of its lower end, and is also formed hollow.

  A rotating body 77 is connected to the lower pivot body 71 via a lower pivot screw 75. The rotating body 77 has a lower pivot housing 79 on each of the upper sides so as to correspond to both sides of the pivot ring 73. Is formed on the outer side of the upper receiving cover 11 so as to be rotatable through an installation port 85.

  That is, with the lower pivot housing 79 formed on both sides of the upper part of the rotating body 77 fitted to the pivot ring 73 of the lower pivot body 71 with a washer W interposed, the lower pivot screw 75 is moved to the lower parts of the both sides. The rotating body 77 and the lower pivot body 71 are hinge-fastened by being fitted through the pivot housing 79 and the pivot ring 73 and fastened to the lower pivot nut 81 on the opposite side.

  At this time, a torsion spring S is interposed inside the pivot ring 73 and installed via the lower pivot screw 75, and one end of the torsion spring S is disposed inside the hollow portion of the lower pivot body 71. The other end is supported on one side of the rotating body 77 to provide a restoring support force to the pole 5.

As shown in FIG. 5, the rotating body 77 is fastened to a rotating bush 83 that is rotatably installed in the installation port 85 inside the upper receiving cover 11, but the rotating body 77 is The rotary bush 83 is fastened to the center of rotation and operates together with the rotary bush 83 so as to be rotatable to one side of the upper receiving cover 11.
At this time, a washer W is interposed between the rotating body 77 and the upper receiving cover 11.

  Thus, the pole 5 can be rotated in the direction of its own rotation and the rotation of the pole 5 with respect to the cradle 3 in a state of being installed on the cradle 3 by the rotation pivot means 9. Two joint structures will be formed.

  Accordingly, the LED stand 1 having the above-described configuration has various lamps along the longitudinal direction corresponding to both side surfaces of the light guide plate 35 to which the reflective tape 41 is attached on one surface in the lamp unit 7. With the LED lamp 43 of hue arranged, the light source is indirectly illuminated through the both side surfaces of the light guide plate 35, so that the light source is not directly exposed to the user's field of vision, preventing glare and protecting the eyesight and learning Provides the efficiency improvement effect.

  In particular, LED lamps 43 of various hues are applied to the light source to provide various learning modes in which efficiency is improved through adjustment of color temperature and brightness, and to provide psychological stability through sensitivity lighting of various colors. You can also.

  Further, by arranging the LED lamps 43 on both sides of the light guide plate 35, the overall thickness of the lamp unit 7 is reduced to provide a sophisticated slim type design.

  The lamp unit 7 is installed on the pole 5 via the tilting pivot means 8 to form a two-joint structure, and the pole 5 is installed on the cradle 3 via the rotary pivot means 9 in the same manner. By forming a two-joint structure, the user can adjust the position of the lamp unit 7 to a wide range of angles, and the atmosphere of the workplace can be produced at various angles.

  That is, the lamp unit 7 can be hinged in the front-rear direction with respect to the pole 5 by the tilting pivot means 8 and can be tilted in the direction of rotation by the tilting bush 69. The pole 5 can be hinged in the front-rear direction with respect to the cradle 3 by the rotating pivot means 9, and at the same time can be rotated in the direction of rotation.

  Although the present invention has been described with reference to specific examples, the present invention is not limited to the above-described embodiments, and many modifications can be made by those having ordinary knowledge in the art within the scope of the appended claims. It goes without saying that this is possible within the essential idea of the invention described.

1 LED stand
3 cradle
5 pole
7 Lamp unit
8 Tilting pivot means
9 Rotating pivot means
11, 13 Receiving cover
15 Circuit board
17 Receiving plate
21, 23 Lamp cover
25 Radiator
27, 31 tilting bush groove
29 Through hole
33 heat sink
35 Light guide plate
37 LED board
41 reflective tape
43 LED lamp
47 Protection sheet
51, 71 Pivot body
53, 73 Pivot ring
55, 57 Pivot case
59, 75 Pivot screw
61, 79 Pivot housing
69 Tilting bush
77 Rotating body

Claims (7)

In an LED stand that illuminates the work surface by installing a lamp unit via a pole on the cradle,
The lamp unit is
An upper lamp cover,
A lower lamp cover coupled to the upper end of the pole in an assembled state with the upper lamp cover, and having a through-hole formed on the cross section;
A heat sink that is installed inside the upper lamp cover and has a mounting end that extends downward along both side ends;
With a reflective tape attached to one surface, a light guide plate having a constant thickness disposed on the lower surface of the heat sink,
LED substrates attached to the inner surfaces of the mounting ends on both sides of the heat sink, and the LED lamps mounted so that a plurality of LED lamps as light sources correspond to both side surfaces of the light guide plate;
LED stand characterized by including. A protective sheet installed corresponding to the through hole of the lower lamp cover;
A prism sheet installed below the light guide plate to refract and disperse the light of the LED lamp;
The LED stand according to claim 1, further comprising:   2. The light guide plate according to claim 1, wherein the light guide plate is made of a rectangular acrylic plate material, and one surface of the light guide plate is subjected to silk screen printing with a paint, and a reflective tape is bonded to the print surface with an adhesive. LED stand.   4. The LED lamp includes a predetermined number of red, green, blue, and white LED elements capable of adjusting a color temperature and a hue amount that are lit by a control unit. LED stand as described in any one of.   The lamp unit and the pole are connected in a two-joint structure via a tilting pivot means, and the pole and the cradle are connected in a two-joint structure via a rotating pivot means. The LED stand according to any one of claims 1 to 3. An upper tilting bush groove is formed at the rear center of the upper lamp cover,
A lower tilting bush groove is formed in the rear center of the lower lamp cover corresponding to the upper tilting bush groove,
The tilting pivot means comprises
An upper pivot body that is inserted into the upper part of the pole and fastened, and a pivot ring is formed at the center of the upper end;
A lower pivot case in which upper pivot housings are formed on both rear sides to correspond to both sides of the pivot ring, and a lower tilting groove is formed in the front center;
An upper pivot case fastened to the upper portion of the lower pivot case and having an upper tilting groove corresponding to the lower tilting groove formed in the front center;
An upper pivot screw that is passed through and fitted to the upper pivot housing and the pivot ring on both sides and fastened to the upper pivot nut on the opposite side, and hinges the lower pivot case and the upper pivot body;
One side is installed in the upper and lower tilting grooves, and the other side is installed in the upper and lower tilting bush grooves formed in the upper and lower lamp covers, with respect to the upper and lower pivot cases. A tilting bush for rotatably installing the upper and lower lamp covers;
The LED stand according to claim 5, further comprising: The rotating pivot means includes
A lower pivot body, which is inserted and fastened to the lower part of the pole, and a pivot ring is formed at the center of the lower end;
A rotating body formed on one side of the upper receiving cover of the cradle with lower pivot housings formed on both sides of the upper part so as to correspond to both sides of the pivot ring;
A rotating bush that is rotatably installed in the upper receiving cover so as to correspond to the rotating body, and the rotating body is fastened to the rotation center thereof;
A lower pivot screw that is passed through and fitted to the lower pivot housing and the pivot ring on both sides and is fastened to the lower pivot nut on the opposite side, and that hinges the rotating body and the lower pivot body;
The lower pivot screw is installed inside the pivot ring, one end is disposed inside the lower pivot body, and the other end is supported on one side of the rotating body to provide a restoring support force to the pole. Torsion springs,
The LED stand according to claim 5, further comprising:

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