TW201411051A - Lighting device - Google Patents

Abstract

A lighting device is provided and includes a first and a second fixing supports, a hollow pipe-shaped light-transmissive cover, a light bar, and a driving device. A first and a second ends of the hollow pipe-shaped light-transmissive cover are respectively rotatably connected to the first and second fixing supports. The hollow pipe-shaped light-transmissive cover includes a transmissive main body, a first and a second color temperature adjusting layers. The transmissive main body has a first and a second surfaces, and there is no overlap between the first and second surfaces. The first and second color temperature adjusting layers are respectively located on the first and second surfaces of the transmissive main body, and are arranged along with the axis of the transmissive main body. The light bar is located in the hollow pipe-shaped light-transmissive cover, and a plurality of light sources are mounted on a surface of the light bar. The driving device is placed on the first fixing support for driving the hollow pipe-shaped light-transmissive cover to relatively rotate on the first and second fixing supports.

Description

Illuminating device

The present invention relates to a light emitting device.

In everyday life, lighting equipment is an indispensable tool. Most of the existing lighting equipment uses a light bulb or a light tube as a light source. Among these lamps or bulbs, fluorescent tubes, incandescent bulbs, and halogen bulbs are commonly used. In recent years, a light-emitting diode (LED) is used as a light source because it consumes a large amount of electric energy during illumination. Lighting equipment has become increasingly popular. In addition, the light-emitting diode not only has the advantages of long life, low power consumption, small volume, shock resistance and wide application, and is not easy to be broken like a conventional light bulb, and is safe for the user.

Although light-emitting diodes have been used in everyday lighting devices, conventional LED lighting devices typically only provide one color temperature of light. For example, if the LED lighting device uses a cool white light emitting diode as the light source, the LED lighting device can only produce cool white light. If the LED lighting device uses a warm white light emitting diode as the light source, the LED lighting device can only produce warm white light. The user cannot change the color temperature of the LED lighting device unless the type of the light-emitting diode is replaced.

In recent years, some LED lighting devices on the market include a plurality of light-emitting diodes of different color temperatures and controllers that can individually control the light-emitting diodes to be turned off. Although such an LED lighting device allows the user to control the color temperature of the light by the controller, the manufacturing process is relatively complicated and the cost of the material is high, so the price is relatively expensive.

One aspect of the present invention is a light emitting device.

According to an embodiment of the invention, a light-emitting device includes first and second fixing seats, a hollow tubular translucent cover, a light-emitting strip and a driving device. The hollow tubular translucent cover is rotatably coupled to the first second fixing seat by the opposite first and second ends, respectively. The hollow tubular translucent cover comprises a light transmissive body and first and second color temperature modulation layers. The light transmissive body has first and second surfaces. The first surface and the second surface do not overlap each other. The first color temperature modulation layer is located on the first surface of the light transmissive body. The second color temperature modulation layer is located on the second surface of the light transmissive body. The first and second color temperature modulation layers are respectively disposed along the axial direction of the light transmitting body. The light strip is disposed in the hollow tubular transparent cover, and a plurality of light sources are disposed on the surface of the light strip. The driving device is disposed on the first fixing base for driving the hollow tubular transparent cover to rotate relative to the first and second fixing seats, so that the light emitted by the light source selectively passes through the first color temperature modulation layer or the second Color temperature modulation layer. When the first color temperature modulation layer is excited, light of a first wavelength is emitted. When the second color temperature modulation layer is excited, a second wavelength of light is emitted.

In an embodiment of the invention, the driving device includes a motor and a friction element. The motor is located on the first mount and has a rotating shaft. The friction element is sleeved on the rotating shaft.

In an embodiment of the invention, the light-emitting device further includes two bearings and two sets of rings. The two bearings are respectively sleeved on the first and second fixing seats. The two sleeves are respectively sleeved on the two bearings, and each has a first end coupling the first end and the second end of the hollow tubular transparent cover. a collar on the first fixing seat contacts the friction element, so that the hollow tubular transparent cover is located first by the friction element The friction between the collars on the mount rotates on the two bearings.

In an embodiment of the invention, the friction element is made of rubber or plastic.

In an embodiment of the invention, the light-emitting device further includes a heat dissipation base disposed in the hollow tubular light-transmissive cover and carrying the light-emitting strip.

In an embodiment of the invention, the first and second fixing seats respectively have a second groove facing the heat dissipation base and the light strip for coupling the heat dissipation base and the two ends of the light strip.

In an embodiment of the invention, the cross-sectional shape formed by the heat dissipation base and the light-emitting strip is the same as the shape of each of the second grooves.

In an embodiment of the invention, the heat dissipation base is made of a metal material.

In an embodiment of the invention, the light emitting device further includes a housing. The outer casing houses the hollow tubular translucent cover and has a slotted alignment hollow tubular transmissive cover, so that the first color temperature modulation layer or the second color temperature modulation layer is exposed in the slot.

In an embodiment of the invention, the first and second fixing seats respectively have perforations, and the first and second fixing seats are respectively fixed to the inner surface of the outer casing by screws through the perforations.

In an embodiment of the invention, the width of the groove is less than or equal to a projection width of the first color temperature modulation layer or the second color temperature modulation layer on a horizontal plane.

In an embodiment of the invention, the first color temperature modulation layer and the second color temperature modulation layer respectively comprise phosphor powder, dye, pigment or a mixture thereof which can be excited to different color temperatures.

In the above embodiment of the present invention, the light-emitting device includes a hollow tubular translucent cover rotatably coupled to the first and second fixing seats, and the hollow tube The light transmissive cover comprises first and second color temperature modulation layers, so that when the driving device drives the hollow tubular transmissive cover to rotate, the first and second color temperature modulation layers are selectively directed toward the light source. In this way, when the light source on the light bar emits light and the first color temperature modulation layer faces the light source, the light emitting device can emit light of the first wavelength by the first color temperature modulation layer after the excitation. In addition, when the light source on the light bar emits light and the second color temperature modulation layer faces the light source, the light emitting device can emit light of the second wavelength by the excited second color temperature modulation layer.

The embodiments of the present invention are disclosed in the following drawings, and the details of However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

FIG. 1 is a perspective view of a light emitting device 100 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the light-emitting device 100 of Fig. 1 taken along line 2-2. Referring to FIGS. 1 and 2 , the light-emitting device 100 includes a first fixing base 110 , a second fixing base 120 , a hollow tubular transparent cover 130 , a light-emitting strip 140 and a driving device 150 . The first tubular end 131 and the second end 133 of the hollow tubular transparent cover 130 are rotatably connected to the first fixing base 110 and the second fixing base 120 respectively. The hollow tubular transparent cover 130 includes a light transmitting body 132, a first color temperature modulation layer 134 and a second color temperature modulation layer 136. The light transmissive body 132 has a first surface 135 and a second surface 137, and the first surface 135 and the second surface 137 do not overlap each other. In addition, the first color The temperature modulation layer 134 is located on the first surface 135 of the light transmitting body 132, and the second color temperature modulation layer 136 is located on the second surface 137 of the light transmitting body 132, and the first color temperature modulation layer 134 is modulated with the second color temperature. The layers 136 are respectively disposed along the axis L direction of the light transmitting body 132.

The light bar 140 is disposed in the hollow tubular transparent cover 130, and a plurality of light sources 142 are disposed on the surface of the light bar 140. In addition, the light emitting device 100 further includes a heat dissipation base 160 located in the hollow tubular light transmissive cover 130 and carrying the light emitting strip 140.

The driving device 150 can be disposed on one of the two fixing seats to drive the hollow tubular transparent cover 130 to rotate. In the present embodiment, the driving device 150 is disposed on the first fixing base 110 and can be used to drive the hollow tubular transparent cover 130 to rotate relative to the first fixing base 110 and the second fixing base 120. In this way, the first color temperature modulation layer 134 and the second color temperature modulation layer 136 can be selectively positioned above the light source 142 (ie, the side facing the light source 142) by rotating the hollow tubular transparent cover 130 by the driving device 150. The light emitted by the light source 142 is selectively passed through the first color temperature modulation layer 134 or the second color temperature modulation layer 136. In FIG. 2, the first color temperature modulation layer 134 faces the light source 142, so that when the first color temperature modulation layer 134 is excited by the light source 142, the light emitting device 100 can emit light of a first wavelength.

Fig. 3 is a cross-sectional view showing the hollow tubular translucent cover 130 of Fig. 2 rotated 180 degrees. As shown, the second color temperature modulation layer 136 faces the light source 142, so that when the second color temperature modulation layer 136 is excited by the light source 142, the light emitting device 100 can emit light of a second wavelength.

In the present embodiment, the light source 142 may include a Light Emitting Diode (LED). The heat sink base 160 can be made of metal Quality (such as copper, iron or aluminum) and can be hollow to increase the contact area with air. When the light source 142 emits light, the heat dissipation base 160 can conduct heat generated by the light source 142. In addition, the first color temperature modulation layer 134 and the second color temperature modulation layer 136 respectively comprise phosphor powder, dye, pigment or a mixture thereof which can be excited to different color temperatures, and the first color temperature modulation layer 134 and the second color temperature The modulation layer 136 can be adhered to the light-transmitting body 132 by silicone. For example, the light source 142 may be a blue light emitting diode, the first color temperature modulation layer 134 may be a green fluorescent powder, a green dye, a green pigment or a mixture thereof, and the second color temperature modulation layer 136 may be red fluorescent light. Powder, red dye, red pigment or a mixture thereof. When the first color temperature modulation layer 134 faces the light source 142 (as shown in FIG. 2), the light-emitting device 100 can emit light having a color temperature of greenish (cold), for example, cool white light of 4500 to 6000K. When the second color temperature modulation layer 136 faces the light source 142, the light emitting device 100 can emit red (warm) light of a color temperature, for example, warm white light of 2700 to 4500K (as shown in FIG. 3).

Specifically, the light-emitting device 100 includes a hollow tubular transparent cover 130 that is rotatable relative to the first and second fixing seats 110, 120, and the hollow tubular transparent cover 130 includes first and second color temperature modulation layers 134, 136. Therefore, when the driving device 150 drives the hollow tubular transmissive cover 130 to rotate, the first and second color temperature modulation layers 134, 136 can selectively face the light source 142. In this way, when the light source 142 on the light-emitting strip 140 is lit and the first color temperature modulation layer 134 faces the light source 142, the light-emitting device 100 can be excited by the first color temperature modulation layer 134 to emit light of a first wavelength. In addition, when the light source 142 on the light bar 140 emits light and the second color temperature modulation layer 136 faces the light source 142, the light emitting device 100 can emit light of the second wavelength by being excited by the second color temperature modulation layer 136.

For the sake of brevity, the component connection relationships and materials that have been described in the above embodiments will not be repeated. In the following description, the connection structure and operation mode between the driving device 150 and the hollow tubular translucent cover 130 will be described in detail.

Fig. 4 is an exploded view showing the light-emitting device 100 of Fig. 1. As shown, the illumination device 100 further includes two bearings 172, 176 and two sets of rings 174, 178. The bearing 172 is sleeved on the first fixing base 110, and the bearing 176 is sleeved on the second fixing base 120. The collar 174 is sleeved on the bearing 172, and the collar 178 is sleeved on the bearing 176. In this way, the two sets of rings 174, 178 can be rotated on the first and second fixing seats 110, 120 by the two bearings 172, 176, respectively.

FIG. 5 is a perspective view showing the first fixing base 110, the collar 174, the light-emitting strip 140, and the heat dissipation base 160 in combination with the hollow tubular translucent cover 130 in FIG. FIG. 6 is a perspective view showing the second fixing base 120, the collar 178, the light-emitting strip 140, and the heat dissipation base 160 in combination with the hollow tubular translucent cover 130 in FIG. Referring also to Figures 5 and 6, the drive unit 150 includes a motor 152 and a friction element 154. The motor 152 is located on the first mount 110 and has a rotating shaft 151. The friction element 154 is sleeved on the rotating shaft 151 and rotates with the rotating shaft 151. The collar 174 has a first recess 175, the collar 178 has a first recess 179, and the first recess 175, 179 respectively couples the first and second ends 131, 133 of the hollow tubular translucent cover 130. Moreover, when the collar 174 is sleeved over the bearing 172, the collar 174 on the first mount 110 contacts the friction element 154 of the drive unit 150. When the motor 152 is in operation, the hollow tubular translucent cover 130 can be rotated by the motor 152 by friction between the friction element 154 and the collar 174 to rotate on the two bearings 172, 176.

In the present embodiment, the material of the friction element 154 may include rubber or plastic, but does not limit the invention.

FIG. 7 is a perspective view of the light-emitting strip 140 and the heat dissipation base 160 of FIG. 4. Referring to FIGS. 5-7, the first and second fixing seats 110 and 120 respectively have second grooves 111 and 121. The second grooves 111 and 121 face the heat dissipation base 160 and the light bar 140, and can couple the heat dissipation base 160 and the two ends of the light bar 140. In the present embodiment, the cross-sectional shape formed by the heat dissipation pedestal 160 and the light-emitting strip 140 is the same as the shape of the two second grooves 111 and 121. At the time of assembly, the heat dissipation base 160 and the two ends of the light-emitting strip 140 can be respectively inserted into the second grooves 111 and 121 to be positioned in the hollow tubular light-transmissive cover 130.

FIG. 8 is a schematic view of the light-emitting device 100 of FIG. 1 as seen from the direction D1. Referring to FIGS. 1 and 8, when the rotating shaft 151 of the motor 152 of the driving device 150 rotates in the direction D2, the collar 174 contacts the friction member 154 on the rotating shaft 151, so that the collar 174 can be directed by the bearing 172. D3 rotates and the collar 178 can be rotated in the direction D3 by the bearings 176. In this way, the first color temperature modulation layer 134 and the second color temperature modulation layer 136 can selectively face the light source 142. In other embodiments, the rotating shaft 151 of the motor 152 of the driving device 150 can also rotate in the opposite direction of the direction D2, and the collars 174, 178 can be rotated in the opposite direction of the direction D3 by the bearings 172, 176, respectively, without limitation. this invention.

FIG. 9 is a perspective view of a light emitting device 100 according to an embodiment of the present invention. Figure 10 is a cross-sectional view of the light-emitting device 100 of Figure 9 taken along line 10-10. Referring to FIG. 9 and FIG. 10 , the illuminating device 100 includes a first fixing base 110 , a second fixing base 120 , and a hollow tubular transparent cover 130 . The light bar 140 and the driving device 150. The first difference from the embodiment of FIG. 1 is that the light-emitting device 100 further includes a housing 180. The outer casing 180 houses the hollow tubular transparent cover 130 and has a slot 181 aligned with the hollow tubular transparent cover 130 to expose the first color temperature modulation layer 134 or the second color temperature modulation layer 136 to the slot 181.

In this embodiment, the first and second fixing seats 110 and 120 respectively have through holes 113 and 123, and the first and second fixing seats 110 and 120 are respectively fixed to the outer casing 180 by the screws 184 passing through the through holes 113 and 123. On the inner surface 182. The width W1 of the slot 181 is less than or equal to the projection width W2 of the first color temperature modulation layer 134 or the second color temperature modulation layer 136 on the horizontal plane. Such a design, when the first color temperature modulation layer 134 or the second color temperature modulation layer 136 faces the light source 142, can reduce the possibility of light leakage or light mixing of the light-emitting device 100, and emit uniform light.

Fig. 11 is a cross-sectional view showing a light-emitting device 100 according to an embodiment of the present invention, the cross-sectional position of which is the same as that of Fig. 10. The first aspect different from the embodiment of FIG. 10 is that the hollow tubular transparent cover 130 further includes a third color temperature modulation layer 138, a fourth color temperature modulation layer 139, a fifth color temperature modulation layer 141, and a sixth color temperature modulation. Layer 143. The first, second, third, fourth, fifth and sixth color temperature modulation layers 134, 136, 138, 139, 141, 143 are all located on the surface of the light transmitting body 132. The first, second, third, fourth, fifth and sixth color temperature modulation layers 134, 136, 138, 139, 141, 143 respectively contain phosphor powder, dye, pigment or can be excited to different color temperatures Its mixture. The width W1' of the slit 181' is less than or equal to the projection width W2' of each color temperature modulation layer. In the present embodiment, the first, second, and sixth color temperature modulation layers 134, 136, and 143 receive the light source 142 toward the light source 142. Light, but by the slit 181' having the width W1', the possibility of light leakage or light mixing of the second and sixth color temperature modulation layers 136, 143 of the light-emitting device 100 can be reduced. That is to say, when the first color temperature modulation layer 134 is excited, the light emitting device 100 can still emit a uniform first wavelength of light.

In addition, the first, second, third, fourth, fifth, and sixth color temperature modulation layers 134, 136, 138, 139, 141, and 143 can be rotated by the driving device 150 (see FIG. 9). The reticle 130 is selectively located above the light source 142 (ie, toward the side of the light source 142) such that light emitted by the light source 142 can selectively pass through the first, second, third, fourth, fifth and The sixth color temperature modulation layer 134, 136, 138, 139, 141, 143 emits light of the first, second, third, fourth, fifth and sixth wavelengths, respectively. That is to say, the number of color temperature modulation layers of the light-emitting device 100 can be determined according to the needs of the designer.

Compared with the prior art, the above-mentioned embodiment of the present invention can achieve the purpose of color temperature modulation by a hollow tubular transparent cover and a driving device including a color temperature modulation layer. When the light source on the light bar emits light and the light source faces the different color temperature modulation layer, the light emitting device can emit light of different wavelengths by different color temperature modulation layers. In this way, the light-emitting device can have the function of color temperature modulation without using a conventional method of adding or replacing different color temperature light sources, and thus is convenient in use. In addition, the components of the illuminating device have a simple connection relationship with the components, and do not require a light source having different color temperatures and a controller for individually controlling the light source to be turned off, thereby reducing the time and material cost of fabricating the illuminating device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. Fan The scope defined in the patent application scope is subject to the definition of patent application.

100‧‧‧Lighting device

110‧‧‧First mount

111‧‧‧second groove

113‧‧‧Perforation

120‧‧‧Second mount

121‧‧‧second groove

123‧‧‧Perforation

130‧‧‧ hollow tubular translucent cover

131‧‧‧ first end

132‧‧‧Lighting body

133‧‧‧ second end

134‧‧‧First color temperature modulation layer

135‧‧‧ first surface

136‧‧‧Second color temperature modulation layer

137‧‧‧ second surface

138‧‧‧ Third color temperature modulation layer

139‧‧‧ Fourth color temperature modulation layer

140‧‧‧Light strips

141‧‧‧ Fifth color temperature modulation layer

142‧‧‧Light source

143‧‧‧ sixth color temperature modulation layer

150‧‧‧ drive

151‧‧‧ shaft

152‧‧‧ motor

154‧‧‧ friction element

160‧‧‧heating base

172‧‧‧ bearing

174‧‧‧ collar

175‧‧‧first groove

176‧‧‧ bearing

178‧‧‧ collar

179‧‧‧first groove

180‧‧‧Shell

181‧‧‧ slotting

181’‧‧‧ slotting

182‧‧‧ inner surface

184‧‧‧ screws

2-2‧‧‧ segments

10-10‧‧‧ segments

D1‧‧ Direction

D2‧‧ Direction

D3‧‧ Direction

L‧‧‧ axis

W1‧‧‧Width

W1’‧‧‧Width

W2‧‧‧projection width

W2’‧‧‧projection width

1 is a perspective view of a light emitting device according to an embodiment of the present invention.

Figure 2 is a cross-sectional view of the light-emitting device of Figure 1 taken along line 2-2.

Fig. 3 is a cross-sectional view showing the hollow tubular translucent cover of Fig. 2 rotated 180 degrees.

Fig. 4 is an exploded view showing the light-emitting device of Fig. 1.

FIG. 5 is a perspective view showing the first fixing seat, the collar, the light-emitting strip, the heat-dissipating base and the hollow tubular transparent cover in combination with FIG. 4 .

Figure 6 is a perspective view showing the second fixing seat, the collar, the light-emitting strip, the heat-dissipating base and the hollow tubular light-transmissive cover in the fourth figure.

Figure 7 is a perspective view of the light-emitting strip and the heat-dissipating base of Figure 4;

Fig. 8 is a view showing the light-emitting device of Fig. 1 as seen from the direction D1.

Figure 9 is a perspective view of a light emitting device according to an embodiment of the present invention.

Figure 10 is a cross-sectional view of the light-emitting device of Figure 9 taken along line 10-10.

Fig. 11 is a cross-sectional view showing a light-emitting device according to an embodiment of the present invention, the cross-sectional position of which is the same as that of Fig. 10.

100‧‧‧Lighting device

110‧‧‧First mount

120‧‧‧Second mount

130‧‧‧ hollow tubular translucent cover

131‧‧‧ first end

134‧‧‧First color temperature modulation layer

133‧‧‧ second end

136‧‧‧Second color temperature modulation layer

140‧‧‧Light strips

142‧‧‧Light source

150‧‧‧ drive

151‧‧‧ shaft

152‧‧‧ motor

154‧‧‧ friction element

160‧‧‧heating base

172‧‧‧ bearing

174‧‧‧ collar

178‧‧‧ collar

176‧‧‧ bearing

Claims (12)

An illuminating device comprises: a first fixing seat and a second fixing seat; a hollow tubular transmissive cover, wherein the two opposite first ends and the second end are rotatably connected to the first fixing seat respectively The second fixing seat comprises: a light transmitting body having a first surface and a second surface, wherein the first surface and the second surface do not overlap each other; a first color temperature modulation a layer on the first surface of the light transmissive body; and a second color temperature modulation layer on the second surface of the light transmissive body, wherein the second color temperature modulation layer and the first color temperature modulation The layers are respectively disposed along the axial direction of the light-transmitting body; a light-emitting strip is disposed in the hollow tubular light-transmissive cover, and a plurality of light sources are disposed on the surface of the light-emitting strip; and a driving device is disposed on the first fixed a seat for driving the hollow tubular transparent cover to rotate relative to the first and second fixing seats, so that light emitted by the light sources selectively passes through the first color temperature modulation layer or the second color temperature Modulation layer, when the first color temperature modulation layer is excited , Emits light of a first wavelength, when the second color temperature modulation layer was excited, emits light of a second wavelength. The illuminating device of claim 1, wherein the driving device comprises: a motor on the first fixing base and having a rotating shaft; A friction element is sleeved on the rotating shaft. The illuminating device of claim 2, further comprising: two bearings respectively sleeved on the first and second fixing seats; and two sets of rings respectively sleeved on the two bearings and each having a first a groove is coupled to the first end and the second end of the hollow tubular translucent cover, wherein the collar on the first fixing seat contacts the friction element, so that the hollow tubular translucent cover is coupled with the friction element The friction between the collars on the first mount rotates on the two bearings. The illuminating device of claim 2, wherein the friction element is made of rubber or plastic. The illuminating device of claim 1, further comprising: a heat dissipation base disposed in the hollow tubular transparent cover and carrying the light strip. The illuminating device of claim 5, wherein the first and second fixing seats respectively have a second recess facing the heat dissipation base and the light strip for coupling the heat dissipation base and the two ends of the light strip . The illuminating device of claim 6, wherein the heat dissipating base and the illuminating strip form a cross-sectional shape identical to the shape of each of the second grooves. The illuminating device of claim 5, wherein the heat dissipation base is made of a metal material. The illuminating device of claim 1, further comprising: a casing accommodating the hollow tubular translucent cover and having a slot aligned with the hollow tubular transmissive cover to enable the first color temperature modulation layer or the second A color temperature modulation layer is exposed in the slot. The illuminating device of claim 9, wherein the first and second fixing seats respectively have a through hole, and the first and second fixing seats are respectively fixed to the inner surface of the outer casing by a screw passing through the through hole. on. The illuminating device of claim 9, wherein the width of the slot is less than or equal to a projection width of the first color temperature modulation layer or the second color temperature modulation layer in a horizontal plane. The illuminating device of claim 1, wherein the first color temperature modulation layer and the second color temperature modulation layer respectively comprise phosphor powder, a dye, a pigment or a mixture thereof that can be excited to different color temperatures.