TWI435024B - Lamp - Google Patents

Description

Lamp

The present disclosure relates to a lighting device, and more particularly to a light fixture.

In recent years, due to the increasing demand for quality of life, lighting and lighting have gradually gained attention. As a result, related companies continue to innovate and develop a wide range of luminaires that are not only practical but also aesthetically pleasing.

Nowadays, the light-emitting diode is mostly used as the light source of the lamp. However, when the light-emitting diode lamp is turned on, the user can directly see the position of each light-emitting diode from the appearance, so that the process is too strong and unattractive. On the other hand, the light-emitting diode is a point light source, and the user can directly cause disability glare and also easily damage the eyesight. Although the manufacturer has frosted or patterned on the glass of the light exit port, it is intended to reduce the damage of the light-emitting diode to the eyes of the user, but this will result in waste of luminous flux.

Therefore, one aspect of the present disclosure is to provide a lamp to improve the problem that the above-mentioned light-emitting diode damages the eyes of the user and wastes light flux.

According to an embodiment of the present disclosure, a luminaire includes an elliptical curved reflector, at least one light source, at least one light guide, and at least one end reflector. The elliptical curved reflector has a light exit. The light source is opposite the elliptical curved reflector. The light-shaped light guide plate is disposed on one side of the light exit opening. The end reflector is disposed on the other side of the light exit port and adjacent to the light guide plate.

Therefore, the illuminator of the present disclosure can reflect the light by the elliptical curved reflector and then emit the light of the original point source into a surface reflection source, thereby reducing the damage of the LED to the user's eyes. At the same time, the light guide plate and the end reflector are used to reduce the loss of luminous flux.

FIG. 1 is a perspective view of a lamp according to an embodiment of the present disclosure. As shown in the figure, the lamp 100 of the present embodiment includes an elliptical curved reflector 110, at least one light source 120, at least one light-guide plate 130, and at least one end reflector 140.

The elliptical curved reflector 110 has a light exit 111. The light source 120 is opposite the elliptical curved reflector 110. The light-shaped light guide plate 130 is disposed on one side of the light exit port 111. The end reflector plate 140 is disposed on the other side of the light exit opening 111 and adjacent to the light-shaped light guide plate 130.

Please continue to refer to FIG. 2, which shows a cross-sectional view of the luminaire of FIG. 1 along line 2-2. The light emitted by the light source 120 is first reflected by the elliptical curved reflector 110, and is reflected by the light-shaped light guide plate 130 to increase the illuminance. On the other hand, the end light reflecting plate 140 reflects the light that is emitted side by side of the light source 120 or the light whose angle of reflection is too large, thereby reducing the loss of luminous flux.

There are many types of light sources 120 to be selected. However, since the light-emitting diodes have power-saving and high-performance characteristics, the present embodiment employs a light-emitting diode as the light source 120.

The light source 120 is placed at one of the focal points of the elliptical curved reflector 110. When the light is reflected by the elliptical curved reflector 110, the original point source is converted into a surface light source, which not only changes the direction of the light travel, but also improves the optical uniformity. Avoid direct exposure to the user's eyes. On the other hand, the light that has been reflected once is softer than the original light of the light-emitting diode, and the phenomenon of ghosting and disabling glare can be avoided.

The number of the light-shaped light guide plates 130 of the present embodiment is two, which are respectively disposed on opposite sides of the light-emitting port 111, so that the light of one reflection can be further reflected twice, so that the loss of the luminous flux can be reduced. Although only two light-shaped light guide plates 130 are used in the present embodiment, if there is a special illumination requirement, the number of light-shaped light guide plates 130 may be increased or decreased according to the light shape required.

In addition, a pivot 150 is disposed at the intersection of the light-shaped light guide plate 130 and the elliptical curved reflector 110, so that the light-shaped light guide plate 130 rotates left and right with the pivot 150 as a fulcrum, and the light-shaped light guide plate is adjusted according to the requirements. The angle between the 130 and the elliptical curved reflector 110.

On the other hand, for convenience of explanation, FIG. 2 further shows a substrate 121 for arranging the light source 120. In addition to the above, the pivot plate 150 is disposed at the intersection of the light-shaped light guide plate 130 and the elliptical curved reflector 110. A pivot 151 is disposed between the substrate 121 and the light-guide plate 130. Similarly, the light-guide plate 130 is pivoted with the pivot 151 as a fulcrum, and can be rotated left and right according to the requirements to adjust the relationship between the light-guide plate 130 and the substrate 121. angle.

The number of the end reflection plates 140 of the present embodiment is two, which are respectively disposed on the opposite sides of the light exit opening 111 for reflecting the light emitted by the light source 120 and the light having an excessive reflection angle of the elliptical curved reflector 110. Reduce the loss of luminous flux. On the other hand, the end reflection plate 140 can be connected not only to the elliptical curved reflector 110 but also downwardly to the light guide 130, thereby reducing the loss of luminous flux.

In order to reduce the energy loss caused by the reflection of the light-emitting diode and increase the uniformity of the light reflection, the present embodiment is plated on one side of the elliptical curved reflector 110, the light-shaped light guide plate 130 and the end-surface reflection plate 140 adjacent to the light-emitting port 111. The upper layer of metal coating. The coating method uses an optical grade coating to increase its reflectivity.

On the other hand, in this embodiment, the light-emitting diode is used as the light source 120. In the high-power illumination of the light-emitting diode, the embodiment further includes a heat sink 160, such as a heat sink fin, which is thermally connected to the light-emitting diode. To reduce the lighting temperature and increase the life of the LED.

According to the embodiment of the disclosure, the lamp 100 of the present disclosure utilizes a combination of an elliptical curved reflector 110, a light-guide plate 130, and an end reflector 140 to reduce the loss of luminous flux, and the metal coating improves the reflectance and reduces the luminous flux. Waste, while maintaining high efficiency.

The present disclosure has been disclosed in an embodiment of the present invention, and is not intended to limit the disclosure, and various modifications and refinements may be made without departing from the spirit and scope of the present disclosure. The scope of the disclosure is defined by the scope of the appended claims.

100. . . Lamp

110. . . Elliptical curved reflector

111. . . Light exit

120. . . light source

121. . . Substrate

130. . . Light guide plate

140. . . End reflector

150, 151. . . Pivot

160. . . Heat sink

2-2. . . Line segment

FIG. 1 is a perspective view of a lamp according to an embodiment of the present disclosure.

Figure 2 is a cross-sectional view of the luminaire of Figure 1 taken along line 2-2.

100. . . Lamp

110. . . Elliptical curved reflector

111. . . Light exit

120. . . light source

121. . . Substrate

130. . . Light guide plate

140. . . End reflector

150, 151. . . Pivot

2-2. . . Line segment

Claims (9)

A luminaire comprising: an elliptical curved reflector having a light exit; at least one light source opposite the elliptical curved reflector; at least one light guide disposed on one side of the light exit; at least one pivot, connected The light-shaped light guide plate and the elliptical curved reflector; and at least one end reflector are disposed on the other side of the light exit opening and adjacent to the light-shaped light guide plate. The luminaire of claim 1, wherein the light source is located at a focus of the elliptical curved reflector. The luminaire of claim 1, wherein the number of the light-shaped light guide plates is plural, and are respectively disposed on opposite sides of the light-emitting port. The luminaire of claim 3, wherein the number of the end reflectors is plural, and is respectively disposed on opposite sides of the light exit. The luminaire of claim 1, wherein the elliptical curved reflector comprises at least one metal coating on a face thereof facing the light source. The luminaire of claim 1, wherein the end reflector comprises at least one metal coating on a side thereof adjacent to the light exit opening. The luminaire of claim 1, wherein the light source is a light emitting diode. The luminaire of claim 1, wherein the end reflector is coupled to the light guide. The luminaire of claim 1, further comprising: at least one heat sink, thermally connecting the light source.