TW201718290A - Light device - Google Patents

Abstract

A light device includes a base, a heat guiding element, a heat guiding column and two light elements. The base has a first surface and a second surface opposite to the first surface. The heat guiding element is disposed on the first surface of the base. A terminal of the heat guiding column is disposed on the second surface of the base and connected to the heat guiding element. The heat guiding column has a first lateral side. The light elements are respectively connected to two adjacent surfaces of the heat guiding column and the first lateral side is disposed between the two adjacent surfaces. The light elements include two plates and two light units. The plates are respectively disposed two opposite sides of the first lateral side. The each plate has a lateral wall adjacent to the first lateral side. The light units are respectively disposed on the plates in which a lateral edge of the each light unit is adjacent to the one lateral wall.

Description

Lamp

The present invention relates to a luminaire, and more particularly to a vehicular luminaire.

The design of the car's headlights is first to illuminate the road ahead so that the driver can see the road conditions. Secondly, it is necessary to consider the lighting safety. That is to say, when there is a car in front, it is necessary to avoid the strong light of the car shining on the other car. The driver's eyes make it difficult to see the front clearly. Therefore, the lighting of automobile headlights is regulated in various countries and regions. When there is no driving vehicle in front, a wide range of high-light modules can be used. On the other hand, when there is a vehicle in front, it must be switched to a near-light. Module.

However, the long-light module and the near-light module of the existing automobile headlights use a tungsten filament bulb, which has low efficiency and has a problem that the tungsten wire is blown or the glass cover is broken and damaged, so that the life and the application are not good.

At present, other different light-emitting elements have been used to replace the tungsten light bulb to improve the service life of the automobile headlight. For example, the use of light-emitting diodes (LEDs) to replace conventional tungsten filament bulbs has become a common alternative. However, due to the limitation of the structure of the general light-emitting diode itself, the position of the light-emitting diode is greatly different from that of the tungsten light bulb. At the same time, the structure of the light-emitting diode itself is also limited to freely set to the original tungsten light bulb. The location that should be set. Therefore, the current automobile lamp solves the problem that the tungsten lamp bulb has a short service life and is easy to be blown to damage the glass cover, but at the same time, the light-emitting element is caused to deviate from the light-emitting type when the light-emitting element is deviated from the correct light-emitting position of the lamp. The problem of stray light.

The present invention provides a luminaire to solve the problems caused by the prior art.

According to an embodiment of the invention, a luminaire includes a susceptor, a heat conducting member, a thermally conductive column, and two illuminating elements. The base has opposite first and second faces. The heat conducting member is disposed on the first side of the base. The heat conducting column has one end disposed on the second side of the base and connected to the heat conducting member, and the heat conducting column has a first side. The light emitting elements are respectively disposed on adjacent two surfaces of the heat conducting column that are apart from the first side. The light emitting element includes a substrate and a light emitting unit. The substrates are respectively disposed on opposite sides of the first side of the heat conducting column, each substrate has a sidewall, and the sidewall is adjacent to the first side. The light emitting units are respectively disposed on the substrate, and the side edges of each of the light emitting units are adjacent to the corresponding side walls.

In an embodiment of the invention, the lamp further includes a lamp cover connected to the base and the lamp cover has a reflective arc surface, and the second surface of the base is located in the reflective arc surface and the reflective arc surface surrounds the light emitting element.

In an embodiment of the invention, the side walls are aligned with the first side.

In an embodiment of the invention, the side edges of each of the light emitting units have a spacing from the corresponding side walls, and the pitch is less than 1 mm.

In an embodiment of the invention, the shortest linear distance between the two side edges of the top surface of the two illumination units is less than 4.5 mm.

In an embodiment of the invention, the heat conducting column is a triangular cylinder.

In an embodiment of the invention, the thermally conductive column is a hollow cylinder.

In an embodiment of the invention, the two light emitting elements are respectively disposed at ends of the heat conducting column away from the base.

In an embodiment of the invention, each of the light emitting elements is a light emitting diode.

According to another embodiment of the present invention, a light fixture includes a base, a heat conductive member, a heat conducting column, two light emitting elements, and two reflective shutters. The base has opposite first and second faces. The heat conducting member is disposed on the first side of the base. The heat conducting column has one end disposed on the second side of the base and connected to the heat conducting member, and the heat conducting column has a first side. The light emitting elements are respectively disposed on adjacent two surfaces of the heat conducting column separated from the first side. The light emitting element includes a substrate and a light emitting unit group. The substrates are respectively disposed on opposite sides of the first side of the heat conducting column, each substrate has a sidewall, and the sidewall is adjacent to the first side. The light emitting unit groups are respectively disposed on the substrate, and the side edges of each of the light emitting unit groups are adjacent to the corresponding side walls, wherein each of the light emitting unit groups has a first light emitting unit and a second light emitting unit along the corresponding side walls. The two reflective shutters are respectively disposed under the two first light emitting units, and each of the reflective shutters has a reflective surface, and the reflective surface is adjacent to the corresponding first light emitting unit.

In another embodiment of the present invention, the luminaire further includes a lamp cover connected to the pedestal and the lamp cover has a reflective arc surface, the second surface of the pedestal is located in the reflective arc surface and the reflective arc surface surrounds the two illuminating element groups.

In another embodiment of the present invention, the lamp cover has a light exiting side, and the first light emitting unit is adjacent to the light emitting side than the second light emitting unit.

The two light emitting units of the two light emitting elements of the luminaire of the embodiment of the present invention are disposed adjacent to the sidewalls of the corresponding substrate, so that when the light emitting elements are disposed on the heat conducting column, the two light emitting units can abut each other to reduce the generation of stray light and have Good light shape. Therefore, when the corresponding lampshade is applied, the two light-emitting units can be collectively arranged to emit light in the light source setting position in the lampshade, so that the light output of the overall lamp can have a better light shape and at the same time reduce the generation of discrete light.

1 and FIG. 2, FIG. 1 is a side view of a luminaire according to an embodiment of the invention, and FIG. 2 is a front view of the hood of the luminaire according to FIG. As shown in FIG. 1 and FIG. 2 , the illuminating device 100 includes a pedestal 110 , a heat conducting component 120 , a heat conducting pillar 130 , and two light emitting elements 140 . The lamp 100 described in this embodiment can be applied to a lamp of an automobile. In particular, the lamp 100 described in this embodiment can be applied to a front lamp of an automobile.

The base 110 has opposing first and second faces 110a, 110b. The heat conducting member 120 is disposed on the first surface 110a of the base 110. For example, the first side 110a of the susceptor 110 is a surface that faces away from the illuminating element 140. The heat conducting component 120 can be externally connected to a starting device (not shown) for activating the electrically connected light emitting component 140, that is, the light emitting component 140 can pass through the wire through the base 110 and the heat conducting component 120 and the starting device (Fig. Not shown) connection.

One end of the heat-conducting column 130 is disposed on the second surface 110b of the base 110 and extends through the base 110 to connect the heat-conducting member 120. However, the heat-conducting member 120 can also extend through the base 110. One end portion of the heat transfer column 130 is connected. In another aspect, the thermally conductive post 130 can have a first side 132. In detail, the first side 132 is a side formed by the joining of two adjacent surfaces 134 of the thermally conductive post 130. On the other hand, in the embodiment, the heat conducting column 130 can be a triangular cylinder, but is not limited thereto. In addition, the heat conducting column 130 can also be a hollow cylinder, but it is not limited thereto. The heat-conducting column 130 can conduct heat generated when the light-emitting element 140 disposed on the heat-conducting column 130 emits light from the heat-conducting column 130 to the heat-conducting member 120, and transmit heat from the light-emitting element 140 to the outside through heat exchange with the external environment. The heat dissipation effect can be achieved to extend the service life of the lamp 100. In this embodiment, the heat conducting column 130 and the heat conducting member 120 can be made of a metal having high thermal conductivity. For example, the heat conducting column 130 and the heat conducting member 120 can be made of aluminum.

In detail, the light-emitting elements 140 are respectively disposed on the adjacent two surfaces 134 of the heat-conducting column 130 separated from the first side 132. Referring to FIG. 3 at the same time, a schematic diagram of a light-emitting element of the luminaire according to FIG. 1 is illustrated. As shown in FIGS. 1 to 3, the light emitting element 140 may include a substrate 142 and a light emitting unit 144. The substrates 142 are respectively disposed on opposite sides of the first side 132 of the heat conducting column 130. Each of the substrates 142 has a sidewall 142a adjacent to the first side 132.

The light emitting units 144 are respectively disposed on the substrate 142, and the side edges 144a of each of the light emitting units 144 are adjacent to the corresponding side walls 142a. In detail, the light emitting unit 144 may be formed by the light emitting chip and the phosphor powder layer coated thereon, and the first color light emitted by the light emitting chip is mixed with the second color light excited by the phosphor powder layer to form a target. The third color light of the light-emitting color (for example, may be white light) is emitted from the light-emitting unit 144. In addition, the protective unit can be coated on the outside of the light emitting unit 144 to extend the service life of the light emitting unit 144. In this embodiment, the light-emitting unit 144 on the light-emitting element 140 is plural, but is not limited thereto. When the light-emitting unit 144 on the light-emitting element 140 is one, the embodiment can still be implemented. For example, the number of the light emitting units 144 on the light emitting element 140 may be 1 to 10, but is not limited thereto. In detail, the shortest linear distance S of the opposite side edges 144b of the farthest distance light emitting unit 144 of the embodiment may be 2-6 mm, and the length of each side edge 144b may be 0.2-1.5 mm, but not This is limited.

Further, the sidewall 142a of a substrate 142 of the embodiment may be commonly aligned with the first side edge 132 such that the two sidewalls 142a may form an angle, and the angle of the angle may be between 2 degrees and 100 degrees, but not This is limited. On the other hand, the side edge 144a of each of the light-emitting units 144 and the corresponding side wall 142a have a spacing I, and the spacing I is less than 1 mm, but not limited thereto. In detail, when there are a plurality of light-emitting units 144 on a surface 134 of the heat-conducting column 130, the light-emitting units 144 may be spaced apart along the corresponding side walls 142a, but not limited thereto. In this embodiment, the two light-emitting elements 140 are respectively disposed at the ends of the heat-conducting column 130 away from the susceptor 110, but are not limited thereto. In other embodiments, the two light emitting elements 140 can be disposed at any location on the surface 134 of the thermally conductive post 130 that is remote from the susceptor 110. In this embodiment, a cover 136 is disposed at an end of the heat conducting post 130 away from the base 110, and the light emitting element 140 can be disposed between the shutter 136 and the base 110.

In addition, in this embodiment, the shortest linear distance D between the two side edges 144a of the top surface 146 of the two light emitting units 144 is less than 4.5 mm, but not limited thereto. In this embodiment, each of the light-emitting elements 140 can be a light-emitting diode, but is not limited thereto.

4 is a side view of a light fixture in accordance with another embodiment of the present invention. In this embodiment, the lamp 100 further includes a lamp cover 150. The lamp cover 150 is coupled to the base 110 and the lamp cover 150 has a reflective curved surface 152. That is, the reflective curved surface 152 can be a spherical surface or a paraboloid surface, but is not limited thereto. In addition, the second surface 110b of the susceptor 110 is located in the reflective curved surface 152 and the reflective curved surface 152 surrounds the illuminating element 140, so that the light emitted by the illuminating element 140 can be integrated into a collection light source and reflected from the reticle 150 via the reflection of the reflective curved surface 152. The light exiting side 150a is issued, but not limited thereto. In addition, the first side 132 of the heat conducting column 130 can pass through the light source setting point P of the lamp cover 150 conforming to the ECE or SAE regulations. In addition, the light emitting element 140 is disposed at a position adjacent to the light source setting point P, and at the same time, the light emitting element 140 The light emitting unit 144 abuts against the first side 132 due to the side wall 142a of the substrate 142. Therefore, the light-emitting element 140 of the present embodiment can be accurately positioned on the light source setting point P of the lamp cover 150 conforming to the ECE or SAE regulations to achieve an overall optimal light-emitting effect, and at the same time, the generation of stray light can be avoided.

Please refer to FIG. 5 and FIG. 6. FIG. 5 is a side view of a lamp according to still another embodiment of the present invention. Figure 6 is a front elevational view of the removal shutter of the luminaire in accordance with Figure 5. It should be understood that the partial structural features of the luminaire 200 of the present embodiment are substantially the same as those of the luminaire 100 of the foregoing embodiment. Therefore, the technical features of the same components in the two embodiments are not repeated hereafter.

As shown in FIG. 5 and FIG. 6 , the luminaire 200 of the embodiment includes a pedestal 110 , a heat conducting component 120 , a heat conducting pillar 130 , two light emitting elements 140 , and two reflective shutters 160 . The base 110 has opposing first and second faces 110a, 110b. The heat conducting member 120 is disposed on the first surface 110a of the base 110. One end of the heat conducting column 130 is disposed on the second surface 110b of the base 110 and is connected to the heat conducting member 120. The heat conducting column 130 has a first side 132. The light emitting element 140 includes a substrate 142 and a light emitting unit group 145. The substrates 142 are respectively disposed on opposite sides of the first side 132 of the heat conducting column 130. Each of the substrates 142 has a sidewall 142a adjacent to the first side 132. The light emitting unit groups 145 are respectively disposed on the substrate 142, and the side edges 145a of each of the light emitting unit groups 145 are adjacent to the corresponding side walls 142a, wherein each of the light emitting unit groups 145 has first light emitting units 147a and a plurality of side by side along the corresponding side walls 142a. Two light emitting units 147b. The second light emitting unit 147b is located between the first light emitting unit 147a and the susceptor 110. The two reflective shutters 160 are respectively disposed under the two first light emitting units 147a. Each of the reflective shutters 160 has a reflecting surface 162 adjacent to the corresponding first light emitting unit 147a. Therefore, the first light emitting unit 147a and the reflective shutter 160 can jointly form a close light module, and the second light emitting unit 147b can form a high light module. The illumination of the first light-emitting unit 147a or the second light-emitting unit 147b is controlled by an external switching device (not shown) to be suitable for starting the near-light module or the high-light module of the vehicle headlight. For example, the angle of the light exiting the first light-emitting unit 147a may be 5 degrees to 100 degrees, and the light-emitting angle of the second light-emitting unit 147b may be 1 degree to 70 degrees, but not limited thereto. In addition, the first light emitting unit 147a and the second light emitting unit 147b of the embodiment respectively have a plurality of surfaces 134 of the heat conducting column 130, but in other embodiments, the first light emitting unit 147a and the second light emitting unit 147b are One of the surfaces 134 of the thermally conductive column 130 can be one, respectively, to which the present invention can be implemented.

In addition, the lamp 200 of the embodiment further includes a lamp cover 150. The lamp cover 150 is connected to the base 110 and the lamp cover 150 has a reflective curved surface 152. That is, the reflective curved surface 152 can be a spherical surface or a paraboloid surface, but is not limited thereto. In addition, the second surface 110b of the susceptor 110 is located in the reflective curved surface 152 and the reflective curved surface 152 surrounds the illuminating element 140, so that the light emitted by the illuminating element 140 can be integrated into a collection light source and reflected from the reticle 150 via the reflection of the reflective curved surface 152. The light exiting side 150a is issued, but not limited thereto. In addition, the first side 132 of the heat conducting column 130 can pass through the light source setting point P of the lamp cover 150 conforming to the ECE or SAE regulations. In addition, the light emitting element 140 is disposed at a position adjacent to the light source setting point P, and at the same time, the light emitting element 140 The group of light emitting cells 145 abuts the first side 132 due to the side walls 142a of the substrate 142. Therefore, the light-emitting element 140 of the present embodiment can be accurately positioned on the light source setting point P of the lamp cover 150 conforming to the ECE or SAE regulations to achieve an overall optimal light-emitting effect, and at the same time, the generation of stray light can be avoided. In addition, the lamp cover 150 has a light exiting side 150a, and the first light emitting unit 147a is adjacent to the light exiting side 150a than the second light emitting unit 147b.

Please refer to FIG. 7 and FIG. 8. FIG. 7 is a front view of a lamp according to still another embodiment of the present invention. FIG. 8 is a schematic view showing a light-emitting element of the luminaire according to FIG. As shown in FIG. 7 and FIG. 8 , the main difference between the present embodiment and the foregoing embodiment is that the light-emitting element 140 of the present embodiment can be defined as one, disposed on the heat-conducting column 130 , and in detail, the light-emitting element 140 can be inserted. Within the cavity formed within the thermally conductive column 130. The light emitting element 140 includes a substrate 142 and two light emitting elements 144. The substrate 142 is disposed on the heat conducting pillar 130. In detail, the substrate 142 is inserted into the cavity formed by the heat conducting pillar 130. The two light emitting units 144 are respectively disposed on opposite sidewalls of the substrate 142 and exposed to the heat conducting pillars 130 . One side edge of each of the light emitting units 144 is adjacent to the sidewall of the corresponding substrate 142 . In detail, the substrate 142 includes a circuit board 142b and two ceramic substrates 142c. The two ceramic substrates 142c are disposed on opposite sidewalls of the circuit board 142b, and are respectively located on the circuit board 142b and the corresponding two light emitting units 144. between. It should be understood that the circuit board 142b can be a copper circuit board that can be electrically connected on both sides, and can be electrically connected to the light emitting unit 144 disposed on opposite sides thereof.

In addition, please refer to FIG. 9 and FIG. 10. FIG. 9 is a side view of a lamp according to still another embodiment of the present invention. As shown in FIG. 9, the lamp 400 of the present embodiment is substantially the same as the lamp 200 of the embodiment shown in FIG. 5 and FIG. 6. The main difference between the embodiment and the foregoing embodiment is that the light-emitting element 140 of the embodiment is It can be defined as one, disposed on the heat conducting column 130. In detail, the light emitting element 140 can be inserted into the cavity formed in the heat conducting column 130. The light emitting element 140 includes a substrate 142 and two light emitting unit groups 145. The substrate 142 is disposed on the heat conducting pillar 130. In detail, the substrate 142 is inserted into the cavity formed by the heat conducting pillar 130. The two light emitting unit groups 145 are respectively disposed on the opposite sidewalls of the substrate 142 and exposed to the heat conducting column 130. One side edge of each of the light emitting unit groups 145 is adjacent to the side wall of the corresponding substrate 142, wherein each of the light emitting units The group 145 has a first light emitting unit 147a and a second light emitting unit 147b alongside the corresponding side walls. In detail, the substrate 142 includes a circuit board 142b and two ceramic substrates 142c. The two ceramic substrates 142c are disposed on opposite sidewalls of the circuit board 142b, and are respectively located on the circuit board 142b and the corresponding two light emitting unit groups 145. between. It should be understood that the circuit board 142b can be a copper circuit board that can be electrically connected on both sides, and can be electrically connected to the light emitting unit 144 disposed on opposite sides thereof.

It will be apparent from the above-described embodiments of the present invention that the application of the present invention has the following advantages. The two light emitting units of the two light emitting elements of the luminaire of the embodiment of the present invention are disposed adjacent to the sidewalls of the corresponding substrate, so that when the light emitting elements are disposed on the heat conducting column, the two light emitting units can abut each other to reduce the generation of stray light and have Good light shape. Therefore, when the corresponding lampshade is applied, the two light-emitting units can be collectively arranged to emit light in the light source setting position in the lampshade, so that the light output of the overall lamp can have a better light shape and at the same time reduce the generation of discrete light.

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. The scope is subject to the definition of the scope of the patent application attached.

100, 200, 300, 400‧‧‧ lamps
110‧‧‧Base
110a‧‧‧ first side
110b‧‧‧ second side
120‧‧‧heat-conducting parts
130‧‧‧thermal column
132‧‧‧ first side
134‧‧‧ surface
136‧‧‧ visor
138‧‧‧heat-conducting plate
138a‧‧‧ connection surface
138b‧‧‧ bearing surface
140‧‧‧Lighting elements
142‧‧‧Substrate
142a‧‧‧ side wall
142b‧‧‧Board
142c‧‧‧ceramic substrate
144‧‧‧Lighting unit
144a‧‧‧lateral edge
144b‧‧‧ side
145‧‧‧Lighting unit group
145a‧‧‧lateral edge
146‧‧‧ top surface
147a‧‧‧First lighting unit
147b‧‧‧second lighting unit
150‧‧‧shade
150a‧‧‧light side
152‧‧‧Reflective curved surface
160‧‧‧Reflection shutter
162‧‧‧reflecting surface
I‧‧‧ spacing
D‧‧‧Distance
S‧‧‧ distance
P‧‧‧Light source set point

The description of the present invention and other objects, features, advantages and embodiments will be more apparent and understood. FIG. 1 is a side view of a luminaire in accordance with an embodiment of the invention. 2 is a front elevational view of the removal shutter of the luminaire in accordance with FIG. 1. 3 is a schematic view of a light emitting element of the luminaire according to FIG. 1. 4 is a side view of a light fixture in accordance with another embodiment of the present invention. FIG. 5 is a side view of a lamp according to still another embodiment of the present invention. Figure 6 is a front elevational view of the removal shutter of the luminaire in accordance with Figure 5. FIG. 7 is a front elevational view of a light fixture in accordance with still another embodiment of the present invention. FIG. 8 is a schematic view showing a light-emitting element of the luminaire according to FIG. Figure 9 is a side elevational view of a luminaire in accordance with yet another embodiment of the present invention. Figure 10 is a front elevational view of the luminaire in accordance with Figure 9.

100‧‧‧Lights

110‧‧‧Base

110a‧‧‧ first side

110b‧‧‧ second side

120‧‧‧heat-conducting parts

130‧‧‧thermal column

132‧‧‧ first side

134‧‧‧ surface

136‧‧‧ visor

140‧‧‧Lighting elements

142‧‧‧Substrate

142a‧‧‧ side wall

144‧‧‧Lighting unit

P‧‧‧Light source set point

Claims (16)

A luminaire includes: a pedestal having a first surface and a second surface; a heat conducting member disposed on the first surface of the pedestal; a heat conducting column having an end portion disposed on the pedestal The second surface is connected to the heat conducting member, the heat conducting column has a first side; and two light emitting elements are respectively disposed on adjacent two surfaces of the heat conducting column separated from the first side, and the light emitting elements comprise The two substrates are respectively disposed on opposite sides of the first side of the heat conducting column, each of the substrates has a side wall, the side wall of each of the substrates is adjacent to the first side; and two light emitting units respectively And disposed on the two substrates, one side edge of each of the light emitting units is adjacent to the corresponding side wall. The luminaire of claim 1, further comprising a lamp cover connected to the pedestal and having a reflective arc surface, the second surface of the pedestal being located in the reflective arc surface and surrounding the reflective arc surface The two light emitting elements. The luminaire of claim 1, wherein the two side walls are aligned with the first side. The luminaire of claim 1, wherein the side edge of each of the light-emitting units has a spacing from the corresponding side wall, the spacing being less than 1 mm. The luminaire of claim 1, wherein the shortest linear distance between the two side edges of the top surface of the two illumination units is less than 4.5 mm. The luminaire of claim 1, wherein the heat conducting column is a triangular cylinder. The luminaire of claim 1, wherein the heat conducting column is a hollow cylinder. The luminaire of claim 1, wherein the two illuminating elements are respectively disposed at an end of the heat conducting column away from the pedestal. The luminaire of claim 1, wherein each of the illuminating elements is a light emitting diode. A luminaire comprising: a pedestal having opposite first and second faces; a heat conducting member disposed on the first side of the pedestal; a thermally conductive post having one end disposed on the pedestal The two sides are connected to the heat conducting member, and the heat conducting column has a first side; two light emitting elements are respectively disposed on adjacent two surfaces of the heat conducting column, and the light emitting elements comprise: two substrates respectively disposed on the heat conducting column On the opposite sides of the first side, each of the substrates has a side wall, the two side walls are adjacent to the first side; and two light emitting unit groups are respectively disposed on the two substrates, each of the light emitting unit groups One side edge is adjacent to the corresponding side wall, wherein each of the light emitting unit groups has a first light emitting unit and a second light emitting unit along the corresponding side wall; and two reflective shutters respectively disposed on the first Below the light emitting unit, each of the reflective shutters has a reflective surface adjacent to the corresponding first light emitting unit. The luminaire of claim 10, further comprising a lamp cover connected to the pedestal and having a reflective arc surface, the second surface of the pedestal being located in the reflective arc surface and surrounding the reflective arc surface A group of two light-emitting elements. The luminaire of claim 11, wherein the lamp cover has a light exiting side, and the two first light emitting units are adjacent to the light exiting side than the two second light emitting units. A luminaire includes: a pedestal having a first surface and a second surface; a heat conducting member disposed on the first surface of the pedestal; a heat conducting column having an end portion disposed on the pedestal The second surface is connected to the heat conducting member; and a light emitting element is disposed on the heat conducting column, the light emitting element comprises: a substrate disposed on the heat conducting column; and two light emitting units respectively disposed on the opposite sides of the substrate The sidewall is exposed to the heat conducting column, and a side edge of each of the light emitting units is adjacent to the corresponding sidewall. The luminaire of claim 13, wherein the substrate comprises a circuit board and two ceramic substrates, wherein the two ceramic substrates are disposed on opposite side walls of the circuit board, and respectively located on the circuit board and the corresponding two illuminating The circuit board and the corresponding two light emitting units are electrically connected between the units. A luminaire comprising: a pedestal having opposite first and second faces; a heat conducting member disposed on the first side of the pedestal; a thermally conductive post having one end disposed on the pedestal The heat conducting column has a first side; the light emitting element is disposed on the heat conducting column, the light emitting element comprises: a substrate disposed on the heat conducting column; and two light emitting unit groups, Separately disposed on the opposite side walls of the substrate and exposed to the heat conducting column, wherein each of the light emitting unit groups has a first light emitting unit and a second light emitting unit along the corresponding side walls; and two reflective shutters, respectively The reflectors are disposed under the two first light-emitting units, and each of the reflective shutters has a reflective surface adjacent to the corresponding first light-emitting unit. The luminaire of claim 15, wherein the substrate comprises a circuit board and two ceramic substrates, the two ceramic substrates are disposed on opposite side walls of the circuit board, and respectively located on the circuit board and the corresponding two illuminating The circuit board and the corresponding two light emitting units are electrically connected between the unit groups.