TWI506223B - Illumination device - Google Patents

Description

Lighting device

The invention relates to a lighting device, in particular to a lighting device which utilizes two reflecting elements to cooperate with each other to make the light out more concentrated and more flexible in use.

Lighting devices are indispensable daily necessities in daily life, and people's lifestyles have changed a lot because of the appearance of lighting devices. Nowadays, in general households, stores, factories, offices or other public places, there are various lighting devices, such as fluorescent lamps, table lamps, chandeliers, street lamps, indicator lights and the like. Most of the conventional lighting devices have a lamp cover, and a light source is disposed in the lamp cover, and the lamp cover can concentrate the light emitted by the light source. In factory buildings, gas stations, stores, etc., because the height of the ceiling is much higher than that of a general home or office, if the general lighting device is installed on the ceiling of the above-mentioned place, the irradiation distance may be too far. The problem of insufficient illumination at high altitudes is required, so it is necessary to use a patio lamp with high brightness. However, the lampshade of the conventional patio lamp is directly fixed on the heat sink, and the size of the lampshade needs to be matched with the heat sink, so that the size of the lampshade is too large and takes up space. Moreover, the lampshade is directly fixed on the heat sink and is difficult to disassemble, and the light angle cannot be changed according to the high-altitude lighting demand, so that the light is more concentrated and the use is less flexible.

The invention provides a lighting device which utilizes two reflecting elements to cooperate with each other to make the light out more concentrated and more flexible in use, so as to solve the above problems.

According to an embodiment, the illumination device of the present invention comprises a lamp holder, a housing, a package structure including a first reflective element and at least one light-emitting element, and a second reflective element. The housing includes a first opening and a second opening, wherein the second opening is opposite to the first opening, the first opening is connected to the socket, an accommodating space is formed between the housing and the socket, and the second opening has An opening End edge. The first reflective element is disposed in the accommodating space, and the first reflective element includes a third opening and a fourth opening, wherein the fourth opening is opposite to the third opening and larger than the third opening, and the third opening is located on the socket . The light emitting element is disposed in the first reflective element and located on the socket, and the light emitting element is electrically connected to the socket. The second reflective element includes a fifth opening and a sixth opening, wherein the sixth opening is opposite to the fifth opening and larger than the fifth opening, and the fifth opening is connected to the open end edge of the housing. The ratio of the area of the fourth opening to the area of the fifth opening is between 0.8 and 1.

Preferably, the fifth opening of the second reflective element is detachably coupled to the open end edge of the housing.

Preferably, the lighting device further comprises a heat sink disposed on the lamp socket.

In summary, the present invention forms a package structure between the first reflective element and the light-emitting element, and the package structure is disposed in the accommodating space between the housing and the lamp holder, and the second reflective element is connected to the housing. Open end edge. The ratio of the two opening areas adjacent to the first reflective element and the second reflective element is between 0.8 and 1, so that the light emitted by the light-emitting element can be more effectively emitted, thereby solving the problem of insufficient high-altitude illumination. . In addition, the first reflective element and the light-emitting element are directly packaged and fixed together to make the light out more concentrated. Furthermore, the second reflective element is disposed separately from the heat sink disposed on the socket. The size of the second reflective element does not need to be matched with the heat sink, and the size of the second reflective element can be effectively reduced, so that the illumination device of the present invention is less Take up space. Since the second reflective element is detachably connected to the open end edge of the housing, the user can replace the second reflective element of different sizes according to actual needs, and the use is relatively flexible.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

1, 2, 3, 4, 5, 6, 7‧‧‧ lighting devices

10‧‧‧ lamp holder

12‧‧‧ housing

14‧‧‧Package structure

16‧‧‧Second reflective element

18‧‧‧ radiator

20‧‧‧wavelength conversion structure

120‧‧‧ first opening

122‧‧‧second opening

124‧‧‧ accommodating space

126‧‧‧Open edge

128‧‧‧Snap holes

130‧‧‧ external thread

140‧‧‧First reflective element

142‧‧‧Lighting elements

144‧‧‧ third opening

146‧‧‧fourth opening

148, 168‧‧‧ inner wall

150, 170‧‧‧reflective layer

160‧‧‧ fifth opening

162‧‧‧ sixth opening

164‧‧‧ hook

166‧‧‧ internal thread

200‧‧‧Transparent colloid

202, 206‧‧‧Fluorescent powder

204‧‧‧Transparent substrate

A1, A2‧‧‧ area

D1, D2‧‧‧ vertical distance

G‧‧‧ gap

Fig. 1 is a schematic view of a lighting device according to a first embodiment of the present invention.

Fig. 2 is a schematic view of a lighting device in accordance with a second embodiment of the present invention.

Figure 3 is a schematic view of a lighting device in accordance with a third embodiment of the present invention.

Figure 4 is a schematic view of a lighting device in accordance with a fourth embodiment of the present invention.

Fig. 5 is a schematic view of a lighting device in accordance with a fifth embodiment of the present invention.

Figure 6 is a schematic view of a lighting device in accordance with a sixth embodiment of the present invention.

Figure 7 is a schematic view of a lighting device in accordance with a seventh embodiment of the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic view of a lighting device 1 according to a first embodiment of the present invention. As shown in FIG. 1 , the illuminating device 1 includes a lamp holder 10 , a housing 12 , a package structure 14 including a first reflective component 140 and at least one illuminating component 142 , and a second reflective component 16 . The housing 12 includes a first opening 120 and a second opening 122. The second opening 122 is opposite to the first opening 120. The first opening 120 is connected to the socket 10. The housing 12 and the socket 10 form a The space 124 is accommodated, and the second opening 122 has an open end edge 126. It should be noted that only one light-emitting element 142 is illustrated in FIG. 1 to illustrate the technical features of the present invention. However, the present invention may also configure two or more light-emitting elements 142 in the package structure 14 according to actual needs. In addition, the light-emitting element 142 can be a light-emitting diode, but is not limited thereto.

The first reflective element 140 is disposed in the accommodating space 124 between the housing 12 and the socket 10 . The first reflective element 140 includes a third opening 144 and a fourth opening 146, wherein the fourth opening 146 is opposite to the third opening 144 and larger than the third opening 144, the third opening 144 is located on the socket 10, and the fourth opening 146 is toward the open end edge 126 of the housing 12. The vertical distance D1 from any point on the fourth opening 146 to the socket 10 is less than or equal to the vertical distance D2 from any point on the open end edge 126 of the housing 12 to the socket 10. In other words, the fourth opening 146 of the first reflective element 140 does not extend beyond the open end edge 126 of the housing 12. In this embodiment, the first reflective element 140 may be integrally formed and made of a material having a reflectance greater than 90%, wherein the material of the first reflective element 140 may be selected from the group consisting of silicone, aluminum, copper, and gold. And the group of materials made up of silver, but not limited to this. The light emitting element 142 is disposed in the first reflective element 140 and is located on the socket 10. The light emitting element 142 is electrically connected to the socket 10. In practical applications, the socket 10 can be powered by the external power source or the built-in battery to the light-emitting element 142 to cause the light-emitting element 142 to emit light.

The second reflective element 16 includes a fifth opening 160 and a sixth opening 162 , wherein the sixth opening 162 is opposite to the fifth opening 160 and larger than the fifth opening 160 , and the fifth opening 160 is connected to the open end of the housing 12 . 126. In this embodiment, the second reflective element 16 can be integrally formed and made of a material having a reflectance greater than 90%, wherein the material of the second reflective element 16 can be selected from the group consisting of silicone, aluminum, copper, and gold. And the group of materials made up of silver, but not limited to this. In this embodiment, the ratio of the area A1 of the fourth opening 146 of the first reflective element 140 to the area A2 of the fifth opening 160 of the second reflective element 16 is between 0.8 and 1.

When illumination is performed by the illumination device 1 of the present invention, the light emitted by the light-emitting element 142 is first reflected by the first reflective element 140 and concentrated from the open end edge 126 of the housing 12, and then the light is reflected by the second reflective element 16 Focus on the lighting plane. By making the ratio of the area A1 of the fourth opening 146 of the first reflective element 140 to the area A2 of the fifth opening 160 of the second reflective element 16 between 0.8 and 1, the light emitted by the light-emitting element 142 can be effectively made. More concentrated shooting, and then solve the problem of insufficient altitude illumination. In addition, the first reflective element 140 and the light-emitting element 142 are directly packaged and fixed together to make the light out more concentrated.

Referring to Fig. 1, reference is made to Fig. 2, which is a schematic view of a lighting device 2 according to a second embodiment of the present invention. The main difference between the illumination device 2 and the illumination device 1 described above is that the fifth opening 160 of the second reflective element 16 of the illumination device 2 is detachably connected to the open end edge 126 of the housing 12. As shown in FIG. 2, the fifth opening 160 of the second reflective member 16 has a hook 164, and the open end edge 126 of the housing 12 has an engaging hole 128. The hook 164 can be engaged with the engaging hole 128 such that the fifth opening 160 of the second reflective member 16 is detachably coupled to the open end edge 126 of the housing 12 by way of a snap. The user can easily detach the second reflective member 16 from the housing 12 by removing the hook 164 from the engaging hole 128. Since the second reflective element 16 is detachably coupled to the open end edge 126 of the housing 12, the user can replace the second reflective element 16 according to actual needs, and is more flexible in use. It should be noted that the components of the same reference numerals as those of the first embodiment shown in FIG. 2 have substantially the same operation principle and will not be described again.

Referring to FIG. 2, please refer to FIG. 3, which is a third embodiment of the present invention. A schematic representation of the illumination device 3. The main difference between the illumination device 3 and the illumination device 2 described above is that the fifth opening 160 of the second reflective element 16 of the illumination device 3 is detachably coupled to the open end edge 126 of the housing 12 by means of a threaded locking. As shown in FIG. 3, the fifth opening 160 of the second reflective member 16 has an internal thread 166 and the open end edge 126 of the housing 12 has an external thread 130. The internal thread 166 and the external thread 130 are intermeshing such that the fifth opening 160 of the second reflective element 16 is detachably coupled to the open end edge 126 of the housing 12 by thread locking. The user can easily detach the second reflective member 16 from the housing 12 as long as the user rotates the second reflective member 16 relative to the housing 12. It should be noted that the components of the same reference numerals as those shown in FIG. 2 in FIG. 3 have substantially the same principle of operation, and are not described herein again.

Referring to Fig. 1, reference is made to Fig. 4, which is a schematic view of a lighting device 4 according to a fourth embodiment of the present invention. The illumination device 4 is mainly different from the illumination device 1 described above in that a reflective layer 150 is disposed on an inner wall surface 148 of one of the first reflective elements 140 of the illumination device 4, and the reflective layer 150 is made of a material having a reflectance greater than 90%. The material of the reflective layer 150 may be selected from the group consisting of gold, silver, aluminum, copper, nickel, and chromium, but is not limited thereto. Similarly, a reflective layer 170 may be disposed on an inner wall surface 168 of the second reflective element 16 of the illumination device 4, and the reflective layer 170 is made of a material having a reflectance greater than 90%, wherein the material of the reflective layer 170 may be selected from A group of materials consisting of gold, silver, aluminum, copper, nickel, and chromium, but not limited to this. It should be noted that the components of the same reference numerals as those shown in FIG. 1 are substantially the same, and will not be described again.

According to the first embodiment and the fourth embodiment described above, the present invention can utilize the materials of the first reflective element 140 and the second reflective element 16 to reflect light, and can also utilize the reflection on the inner wall surface 148 of the first reflective element 140. The layer 150 and the reflective layer 170 on the inner wall surface 168 of the second reflective element 16 reflect light, depending on the application.

Referring to Fig. 1, reference is made to Fig. 5, which is a schematic view of a lighting device 5 according to a fifth embodiment of the present invention. The main difference between the illuminating device 5 and the illuminating device 1 described above is that the illuminating device 5 further includes a heat sink 18 disposed on the socket 10. In this embodiment, the heat sink 18 is a heat sink fin, but it can also be a heat sink block or a heat pipe, as long as it has a high heat dissipation function. Yes, but not limited to this. As shown in FIG. 5, since the second reflective element 16 is disposed on the housing 12, the second reflective element 16 is disposed separately from the heat sink 18 disposed on the socket 10, and the size of the second reflective element 16 does not need to be The heat sink 18 cooperates to effectively reduce the size of the second reflective element 16, so that the illumination device 5 of the present invention takes up less space. It should be noted that the components of the same reference numerals as those shown in FIG. 1 are substantially the same, and will not be described again.

Referring to Fig. 1, reference is made to Fig. 6, which is a schematic view of a lighting device 6 according to a sixth embodiment of the present invention. The illumination device 6 is mainly different from the illumination device 1 described above in that the illumination device 6 further includes a wavelength conversion structure 20 disposed inside the open end edge 126 of the housing 12 and located at the first reflective element 140 and the second reflective element. Between 16. As shown in FIG. 6, there is a gap G between the wavelength conversion structure 20 and the light-emitting element 142, that is, the wavelength conversion structure 20 is not in contact with the light-emitting element 142. In this embodiment, the wavelength conversion structure 20 cooperates with the open end edge 126, and the first reflective element 140 and the second reflective element 16 can be in a flat shape, which can combine the efficiency of wavelength conversion and effectively save the manufacturing cost of the wavelength conversion structure 20. The wavelength conversion structure 20 can be made by mixing a transparent colloid 200 and a phosphor powder 202. The wavelength conversion structure 20 converts the wavelength of the light emitted by the light-emitting element 142 to another wavelength, thereby changing the color of the light emitted by the light-emitting element 142. Since the wavelength conversion structure 20 is not in contact with the light-emitting element 142, the light-fading phenomenon of the phosphor powder 202 of the wavelength conversion structure 20 can be effectively prevented. It should be noted that the components of the same reference numerals as those shown in FIG. 1 are substantially the same, and will not be described again.

Referring to Fig. 6, reference is made to Fig. 7, which is a schematic view of a lighting device 7 according to a seventh embodiment of the present invention. The illuminating device 7 is different from the illuminating device 6 described above in that the wavelength converting structure 20 of the illuminating device 7 includes a transparent substrate 204 and a phosphor powder 206, wherein the phosphor powder 206 is disposed on the transparent substrate 204. In this embodiment, the transparent substrate 204 can be a sapphire substrate, which has better heat resistance, so that the wavelength conversion structure 20 does not affect the efficiency due to the thermal energy emitted by the light-emitting element 142, but the material of the transparent substrate 204 is not This is limited. It should be noted that the components of the same reference numerals as those shown in FIG. 6 have substantially the same operation principle, and are not described herein again.

In summary, the present invention forms a package structure between the first reflective element and the light-emitting element, and the package structure is disposed in the accommodating space between the housing and the lamp holder, and the second reflective element is connected to the housing. Open end edge. The ratio of the two opening areas adjacent to the first reflective element and the second reflective element is between 0.8 and 1, so that the light emitted by the light-emitting element can be more effectively emitted, thereby solving the problem of insufficient high-altitude illumination. . In addition, the first reflective element and the light-emitting element are directly packaged and fixed together to make the light out more concentrated. Furthermore, the second reflective element is disposed separately from the heat sink disposed on the socket. The size of the second reflective element does not need to be matched with the heat sink, and the size of the second reflective element can be effectively reduced, so that the illumination device of the present invention is less Take up space. Since the second reflective element is detachably connected to the open end edge of the housing, the user can replace the second reflective element of different sizes according to actual needs, and the use is relatively flexible. The present invention can also configure a wavelength conversion structure between the first reflective element and the second reflective element to change the color of the light emitted by the light emitting element.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1‧‧‧Lighting device

10‧‧‧ lamp holder

12‧‧‧ housing

14‧‧‧Package structure

16‧‧‧Second reflective element

120‧‧‧ first opening

122‧‧‧second opening

124‧‧‧ accommodating space

126‧‧‧Open edge

140‧‧‧First reflective element

142‧‧‧Lighting elements

144‧‧‧ third opening

146‧‧‧fourth opening

160‧‧‧ fifth opening

162‧‧‧ sixth opening

A1, A2‧‧‧ area

D1, D2‧‧‧ vertical distance

Claims (13)

A lighting device comprising: a lamp holder; a housing comprising a first opening and a second opening, the second opening being opposite to the first opening, the first opening being connected to the lamp holder, the housing Forming an accommodating space with the lamp holder, the second opening has an open end edge; a package structure comprising: a first reflective component disposed in the accommodating space, the first reflective component including a first a third opening opposite to the third opening and larger than the third opening, the third opening is located on the socket; and at least one light emitting element disposed in the first reflective element On the lamp holder, the at least one light-emitting component is electrically connected to the lamp socket; and a second reflective component includes a fifth opening and a sixth opening, the sixth opening is opposite to the fifth opening and larger than the a fifth opening, the fifth opening is connected to the open end edge of the housing; wherein a ratio of an area of the fourth opening to an area of the fifth opening is between 0.8 and 1. The lighting device of claim 1, wherein a vertical distance from any point on the fourth opening to the socket is less than or equal to a vertical distance from the point on the opening edge to the socket. The lighting device of claim 1, wherein the fifth opening is detachably coupled to the open end edge of the housing. The lighting device of claim 3, wherein the fifth opening is detachably coupled to the open end edge of the housing by snapping or thread locking. The lighting device of claim 1, wherein the first reflective element is integrally formed and made of a material having a reflectance greater than 90%. The illumination device of claim 1, wherein a reflective layer is disposed on an inner wall surface of the first reflective element, the reflective layer being made of a material having a reflectance greater than 90%. The lighting device of claim 1, further comprising a heat sink disposed on the lamp holder. The illuminating device of claim 1, further comprising a wavelength conversion structure disposed inside the open end edge of the housing and between the first reflective element and the second reflective element. The illumination device of claim 8, wherein a gap exists between the wavelength conversion structure and the at least one light emitting element. The illumination device of claim 8, wherein the wavelength conversion structure is in the form of a flat plate. The illumination device of claim 10, wherein the wavelength conversion structure is made of a transparent colloid and a phosphor blend. The illuminating device of claim 10, wherein the wavelength conversion structure comprises a transparent substrate and a phosphor powder, and the phosphor powder is disposed on the transparent substrate. The illumination device of claim 12, wherein the transparent substrate is a sapphire substrate.